{"errors":[],"record_count":316,"records":[{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n199208-191061\nEdit\nPlease tell me what the term Crossover means?\nPlease tell me what the term Crossover means?\nIs it the change from digital to analogue?\nPlease keep it simple - no need for detailed discussion - I just want to know the term and maybe a bit about how and where it happens on a couple types of systems.Thank you.\nkbmr\n08-04-2026  7:18pm\n31 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nknotscott\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,430 posts\n08-04-2026 at 07:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCrossover is a frequency divider or filter that passes or blocks certain frequencies, typically to the intended drivers of a speaker.\u00a0 Low pass for bass, band pass for mids, high pass for high frequencies.\u00a0 They can also control the relative output of each driver.\u00a0 There are passive and active examples.\u00a0 Active occurs before the amp, passive after.\u00a0 The specific frequencies where the crossover occurs depends on the particular speakers, and where the designer chooses for them to occur.\u00a0 They can vary in slope and complexity.\u00a0 It\u2019s a combination of science and art, and is a critical part of any speaker.\nnoromance\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10,536 posts\n08-04-2026 at 07:57pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBasically, it\u2019s a thing that\ncrosses over\nthe frequencies to different types of speaker drivers without making the frequency response difference between them noticeable.\nkbmr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n39 posts\n08-04-2026 at 08:13pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOK thank you both -\nIs crossover always done in the analogue phase? Or is it sometimes done in the digital phase? and how does DSP relate to crossover?\nPost removed\nAug 04, 2026\nknotscott\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,430 posts\n08-04-2026 at 09:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAccording to Duck AI:\n\"Is crossover always done in the analogue phase? Or is it sometimes done in the digital phase? and how does DSP relate to crossover?\"\n\u201cCrossover\u201d can mean two different things in audio engineering, and the answer depends on which one you mean.\nAnalog crossover vs digital crossover\nAnalog phase crossover (analog filters)\nWhen you use a hardware (analog) crossover (op-amps, passive L/C networks, transformer networks, etc.), the filtering happens in the analog domain\u2014i.e., before the signal is digitized. That\u2019s what people often mean by \u201canalog crossover.\u201d\nDigital phase crossover (digital filters / DSP crossover)\nWhen you digitize the signal first (ADC), then apply digital filtering (often linear-phase or carefully designed IIR filters), the crossover is done in the digital domain. This is a digital crossover (or \u201cDSP crossover\u201d).\nSo: No, crossover is not \u201calways\u201d done in the analog phase\u2014modern systems often do it digitally (especially where flexibility, time alignment, or many bands are needed).\nWhat DSP has to do with crossover\nDSP (Digital Signal Processing) is the broader category: using computations (in software or firmware) to shape audio signals. A DSP can implement many kinds of processing:\ncrossovers\u00a0(splitting\u00a0into\u00a0bands)\ndelay\u00a0/\u00a0time\u00a0alignment\nlimiting\u00a0/\u00a0compression\nroom\u00a0correction\ncrossover\u00a0protection\u00a0(e.g.,\u00a0power\u00a0limiting\u00a0per\u00a0band)\nSo DSP \u201crelates to crossover\u201d like this:\nA\u00a0digital\u00a0crossover\u00a0is\u00a0one\u00a0specific\u00a0DSP\u00a0use-case.\nDSP\u00a0is\u00a0the\nmethod/tool\n;\u00a0the\u00a0crossover\u00a0is\u00a0the\nfunction\nyou\u2019re\u00a0implementing\u00a0with\u00a0DSP.\nWhere \u201ccrossover\u201d happens in typical signal chains\nAnalog\u00a0crossover\u00a0chain:\u00a0Source\u00a0\u2192\u00a0analog\u00a0crossover\u00a0\u2192\u00a0amp\u00a0for\u00a0each\u00a0band\u00a0\u2192\u00a0speakers\nDigital\u00a0crossover\u00a0chain:\u00a0Source\u00a0\u2192\u00a0ADC\u00a0\u2192\u00a0DSP\u00a0crossover\u00a0(filters\u00a0per\u00a0band)\u00a0\u2192\u00a0DACs\u00a0/\u00a0digital\u00a0routing\u00a0\u2192\u00a0amps\u00a0\u2192\u00a0speakers\n(Sometimes\u00a0you\u00a0still\u00a0use\u00a0analog\u00a0gain/EQ\u00a0after\u00a0the\u00a0DACs.)\nPhase: how to think about it\nA big practical point: \u201ccrossover\u201d isn\u2019t inherently \u201canalog phase\u201d or \u201cdigital phase\u201d\u2014it\u2019s about the signal path and filter design.\nMany\u00a0analog\u00a0crossovers\u00a0(especially\u00a0certain\u00a0passive\u00a0topologies)\u00a0are\u00a0minimum-phase\u00a0behavior\u00a0(phase\u00a0is\u00a0\u201cminimum-phase-like\u201d\u00a0/\u00a0frequency-dependent\u00a0in\u00a0a\u00a0way\u00a0tied\u00a0to\u00a0analog\u00a0filter\u00a0design).\nMany\u00a0digital\u00a0crossovers\u00a0can\u00a0be\u00a0designed\u00a0as\u00a0linear-phase\u00a0(if\u00a0you\u00a0accept\u00a0latency)\u00a0or\u00a0as\u00a0minimum-phase\u00a0IIR,\u00a0depending\u00a0on\u00a0the\u00a0algorithm.\nBottom line\nCrossover\u00a0can\u00a0be\u00a0analog\u00a0or\u00a0digital,\u00a0depending\u00a0on\u00a0where\u00a0the\u00a0filtering\u00a0is\u00a0performed.\nDSP\u00a0is\u00a0the\u00a0processing\u00a0framework;\u00a0when\u00a0the\u00a0crossover\u00a0is\u00a0done\u00a0with\u00a0DSP,\u00a0it\u2019s\u00a0called\u00a0a\u00a0digital\u00a0crossover.\nbuellrider97\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,066 posts\n08-04-2026 at 10:35pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n+1 to knotscott for some informative answer's in a very polite response. Much respect to you both. Mike B.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n08-04-2026 at 11:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMulti-way speakers use two or more of what we call \"drivers.\"\u00a0 Drivers are the only part of a speaker that moves, or vibrates.\u00a0 Each driver needs to have the electrical driving force tailored to it.\u00a0 The signal must \"cross over\" from one driver to the other as the frequencies change.\nThe crossover is the circuit, consisting of resistors, capacitors and inductors (and op amps if active) which make the \"choices\" of which frequency goes where.\nHere\u2019s a couple of posts I wrote for beginners.\nhttps://speakermakersjourney.blogspot.com/2016/02/crossover-basics.html\nhttps://speakermakersjourney.blogspot.com/2016/12/crossover-basics-driver-response.html\ncuriousjim\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,165 posts\n08-04-2026 at 11:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy speakers are 3.5 way. \u00a0The crossover divides the signal for the tweeter, the midrange and the speaker has two of the same driver, one handles the midbass and the other handles the bass. That\u2019s why they call it a 3.5.\ntoddalin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n708 posts\n08-04-2026 at 11:57pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAre you sure?\u00a0 In most 2.5 ways, one woofer handles the bass and mid-bass and the other just the bass.\nkbmr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n39 posts\n08-05-2026 at 12:03am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThank you knotscott and erik_squires and everyone else!\nI'll be back w/ more questions I'm sure, haha!\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n08-05-2026 at 12:58am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe 0.5 means you are missing a filter.\nIn a normal 3-way speaker, you have 2 pairs of filters.\u00a0 \u00a0The mid to tweeter requires a low and high pass filter.\u00a0 The mid to woofer transition also needs a pair of filters, a low and high pass.\nThe 0.5 designation is because of those 4 filter sections one is missing.\u00a0 In a 2.5 way, what is omitted is a low pass filter on the \"midrange\"\ntoddalin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n708 posts\n08-05-2026 at 01:21am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMore typically, the .5 means that two speakers are reproducing a portion of the same band, and typically in the woofer.\nFor example in a JBL 4435 2.5-way, one 15\" woofer is allowed to play up to 800 Hz, but the other 15\" woofer crosses over at","title":"Please tell me what the term Crossover means?","url":"https://forum.audiogon.com/discussions/please-tell-me-what-the-term-crossover-means"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n199216-2439\nEdit\nPure Sine Wave UPS\nMy electricity here in Florida is often going off for a second then coming back. This happens sometimes twice a day with many more times during summer storms. When this happens my stereo goes haywire, Especially my digital setup (Esoteric N-05XD). I have to often shut it off and restart it. I have a PS Audio P10 Regenerator powering the whole system. So now to the question. Would adding an APC UPS 1500VA/900W Pure Sine Wave BR1500MS2 ($300) in front of the P10 make the sound worse during normal playback? I'm hoping this unit will prevent my power fluctuations to my system without affecting the sound when the UPS is not performing its task. I'm not concerned if it sounds bad when the power goes off, but only that it keeps the stuff running without having to repower the digital unit.\nkoestner\n08-05-2026 11:59am\n8 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nPost removed\nAug 05, 2026\nzlone\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,431 posts\n08-05-2026 at 01:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have a P15, and as I recall they very specifically state you should not put anything in between it and the wall. It would probably still clean up any noise, but I add I g the UPS might limit your current supply. But it is relatively cheap and might be worth a try to bridge very short outages or dips.\nmashif\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n505 posts\n08-05-2026 at 08:37pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIn a previous post, I detailed my use of an Ecoflow Delta 3 Plus UPS. I use it to power my entire front end. I can't speak to the PS Audio device. I use a simple Furman PL Plus C power conditioner plus a DC blocker between the UPS and my gear. My system has never sounded better.\nga_audio\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n27 posts\n08-07-2026 at 12:01am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have an eversolo T8 plugged into a UPS for the same reason that brownouts require resetting if it is abruptly turned off. \u00a0A complete nuisance \u00a0Honestly I cannot tell the difference between the T8 plugged into a UPS rather than a PS power conditioner. \u00a0I was tempted to plug the PS into the UPS hut I have not. FWIW.\nkoestner\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n742 posts\n08-10-2026 at 11:50am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSo, I have ordered a UPS from Amazon. It uses the newer battery type and should last a long time before replacement. I will place it between the wall outlet and my PS Audio P10. That way the P10 can possibly clean up any added junk on the line. It's all an experiment here, but I need something to block these frequent power glitches. I will report back in a few days when it arrives, and is hooked in. My P10 reports that I am using less than 200 watts in all, and I ordered a 1000VA/800W unit. That should be enough I think.\nmashif\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n505 posts\n08-11-2026 at 03:17am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAfter you get set up, try letting the battery power it directly. Unplug the charger unit, and listen to the difference.\njwpstayman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n418 posts\n08-14-2026 at 02:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIN the past few years, the term \"UPS\" has been used for devices that are actually battery backup.\u00a0 \u00a0 A true UPS system runs off the battery full time and it is charging full time as well.\u00a0 A battery back up ONLY kicks in when the power is dropped.\u00a0 A real UPS system is a lot more expensive.\u00a0 Just thought that some clarification might be helpful.\nmashif\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n505 posts\n08-14-2026 at 06:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@jwpstayman\nUPS means Uninterruptible Power Source. Battery backups can work exactly the same way. When wall power is connected, it powers the equipment while charging the battery. When disconnected, the battery takes over with no interruption.\nMore to discover\nPure Music 1.88a\nGainclone vs. Pure Class-A\nPure Music or Amarra with iMac\nPure Audio Project\nBeware of dealing with PurePower Part...\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nVandersteen Model 2c ii signature\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Pure Sine Wave UPS","url":"https://forum.audiogon.com/discussions/pure-sine-wave-ups"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n199173-2288\nEdit\nAn unexpected drink of water when I was parched.\nI finally got a second system set up in my family room. Nothing to fancy or intrusive:\nChartwell ls3/5, WIIM, ADI-2.\nFirst came the Pass Labs XA-25, then going up in power to the Dynaco Stereo 70. Neither really doing it for me.\nNext up a SE 300b amp. YES!\nI think it's relieving compared to the others, but why?\nmikewerner\n07-31-2026  7:11pm\n6 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nspatialking\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n704 posts\n08-01-2026 at 01:38am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nElectronics do sound different. Not as much as speakers or phono cartridges, but they do sound different.\u00a0 Enjoy what you got and listen to the music!\njasonbourne71\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,904 posts\n08-01-2026 at 04:54am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe OP likes the sound of the second harmonic distortion of the 300B triode.\ncorelli\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,203 posts\n08-01-2026 at 01:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNot only the often euphonic distortion spectrum, but also keep in mind tube amps do not put out a flat frequency response into a reactive speaker load.\u00a0 As JA used to say, an \"unpredictable tone control.\"\u00a0 Into some loads it may sound great, into others not at all.\nmikewerner\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n136 posts\n08-08-2026 at 04:47pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nUpdate:\nNext up was a push-pull KT88 valve amp in triode. Didn't like it so much.\nThen the FirstWatt SIT-2. On this system it compares with the SE 300b amp, (as in I like it very much).\nThis makes me wonder again, why?\nI guess it comes down to that elusive trait called synergy.\njasonbourne71\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,904 posts\n08-08-2026 at 05:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe SIT-2 has a 1+ ohm output impedance so it has a non-flat response like an SET amp. It's essentially a tone control.\nmikewerner\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n136 posts\n08-09-2026 at 05:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf only it were so simple...\nMore to discover\nUnexpected preamp needed- return poli...\nDedicated mains supply unexpected result\nUnexpected Tom Petty  \"stamper\" disco...\nUnexpected tweak\nUnexpectedly low volume with Schiit S...\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10IIxs\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"An unexpected drink of water when I was parched.","url":"https://forum.audiogon.com/discussions/an-unexpected-drink-of-water-when-i-was-parched"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n199131-112139\nEdit\nPURITAN PSM 156 VS. AUDIOQUEST NIAGRA 3000 POWER CONDITIONERS\nI am looking for a power conditioner to go with the following equipment:\n1, Bryston 4B3 Cubed power amplifier\n2. Conrad Johnson ET7 S2 linestage\n3. Lumin U2 streamer\n4. Weiss Dac 204 with Modwright power supply\nHas anybody had the opportunity to compare the 2.\u00a0 Please recommend a power cable for your choice between the 2.\nkjl1065\n07-26-2026  3:36pm\n2 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nspatialking\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n704 posts\n07-31-2026 at 03:54pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'm reluctant to recommend power conditioners from companies that don't publish their specifications on isolation, leakage, or attenuation curves.\u00a0 Gosh, some of these power units aren't even UL/CE approved.\nGood power cords can make a difference but only medical grade power cords actually publish leakage numbers from line to earth; leakage translates into low level hum which blurs the sound.\u00a0 If in doubt, go medical grade power cords until you sort your decision.\u00a0 They are\u00a0 very well made and inexpensive to justify some experimention.\nIn each case, it's buyer beware.\u00a0 Whatever one you buy, make sure you can get a refund or exchange if it doesn't work out.\u00a0 At least if you hear an improvement you can decide if the few thousand it costs is worth it. Ideally, one should be able to rent the big buck power units first so one can make a non rushed decision.\ngoose\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n799 posts\n08-07-2026 at 12:45am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI think you need to study the reviews and make a determination yourself.\u00a0 I had a Furman reference conditioner and now have the the Puritan PSM 156.\u00a0 It is quitter than than the Furman and no drawbacks with amplifer or lower level sources pluged in. Just my two cents.\nMore to discover\nNon-current limiting power conditioners\nPower Conditioners\nAC Conditioners?\nElgar Line Conditioners\npower conditioners for digital\nVolumio Primo Plus\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nVandersteen Model 2c ii signature\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"PURITAN PSM 156   VS. AUDIOQUEST NIAGRA 3000 POWER CONDITIONERS","url":"https://forum.audiogon.com/discussions/puritan-psm-156-vs-audioquest-niagra-3000-power-conditioners"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n199174-2831\nEdit\nrepair service for a George Kaye Tube Tester\nI own the above mentioned tester and it is in need of repair.\u00a0 At the moment, it is not functional, but for many years, it\u00a0 worked like magic.\u00a0 I have many 9 pin tubes in my stockpile that I would like to test for performance before doling them out to friends.\u00a0 Help?\njwpstayman\n07-31-2026  8:21pm\n2 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n07-31-2026 at 08:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\na quickie search:\nhttps://vintagetubeelectronics.com/\nthese people might lead you to someone\nhttps://antiqueradios.com/forums/viewtopic.php?t=441543#p3796593\na facebook group\nhttps://www.facebook.com/groups/1646487425629637\nbook\nhttps://www.biblio.com/book/how-use-calibrate-repair-upgrade-vacuum/d/1413947990\njwpstayman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n418 posts\n08-05-2026 at 03:48pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHI Elliot - Andy at Vintage Tube is out until 8/24 and I was not able to find anything useful on the links that you gave.\u00a0 I am not a DIY guy and am looking for a REPAIR service for that tester.\u00a0 Anyone else have any ideas???\nMore to discover\nWhat is a NOS 6SN7 tube with these tu...\nBest Tube Tester for 6SN7 &amp; 6AS7\nFor the anal retentive audiophile...a...\nAffordable Tube Tester\nRecommendations for a vacum tube tester\nBricasti M5\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nAurender N100H\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"repair service for a George Kaye Tube Tester","url":"https://forum.audiogon.com/discussions/repair-service-for-a-george-kaye-tube-tester"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n199043-117078\nEdit\nHow AI fixed my Bryston integrated\u2019s crashing problem\nOkay\u2026big breath. I have had amp crashing issues lately. So I relentlessly pursued this with AI. While it has stumbled along the way, and the path was long and circuitous, it has delivered me all the answers I need on a very complex topic. WARNING. It is very long over days. But I am posting it as it fully illustrates AI abilities and limitations in the sometimes very complicated world of audio. All of that is on full display here.\nBTW, AI gave me the answers that Bryston tech support could not.\nHow AI fixed my Bryston crashing problem\ntlcocks\n07-17-2026  3:16pm\n21 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nbuellrider97\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,066 posts\n07-17-2026 at 03:47pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAh the old floating ground pin issue ! Good work Grasshopper! \ud83d\ude06 But seriously, good work and thanks for sharing. Unfortunately within the industry \u201c Balanced \u201c has multiple configurations, some of which are not truly balanced. So now that you were able to get your EQ going , how does it sound ? Respectfully, Mike B.\ntlcocks\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n588 posts\n07-17-2026 at 05:46pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI you read the whole thing (I know, it\u2019s terribly long), it really takes a great deal more querying beyond the earlier section to get at why the amp was crashing. It is multi factorial but primarily related to how hot a pro signal can be going back into the Bryston, as well as upgraded PCs.\nAs to how the system sounds? \u00a0I\u2019ve had it for 12 years and the Bryston PEQ-1 combo is STUPENDOUSLY great sounding. But only if you push voltage a bit by not going below 6 on master gain. AI flourished on all that part of the discussion too. It spoke my LOVE LANGUAGE in that section, hehe! \u00a0It said I use the instrument exactly like a mastering engineer would. It loves to flatter! \u00a0But it allowed me to fully understand and fix my problem, which had exacerbated since upgrading all PCs. But now I know exactly what to do. \ud83d\ude0a\ud83c\udfb6\ntlcocks\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n588 posts\n07-17-2026 at 05:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI really think reading all my questions and all its answers is, while tedious, incredibly instructive as to just what AI can do with a complex electrical audio issue. You will also read its two slip ups that I called out on and allow it to recover from. Which it did to deliver me the solution required and know the amp is not damaged or needing service.\ncleeds\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,635 posts\n07-17-2026 at 06:43pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\ntlcocks\nAI gave me the answers that Bryston tech support could not.\nReally? Who did you speak with at Bryston?\ntlcocks\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n588 posts\n07-18-2026 at 12:22am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019d rather not say. But suffice to say the amp was exhibiting a multitude of symptoms that, looked at as a whole and without ignoring anything I wrote, AI was able to help me whereas Bryston rep just ultimately said to send them the amp. They also said they would likely have it a while, like months, as they were backlogged on repairs. I now know from AI the symptoms were built in protective measures and not progressive damage. And it told me what to do to mitigate symptoms. \u00a0 Humans get impatient with long descriptions whereas the AI takes in to account everything you tell it.\ntlcocks\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n588 posts\n07-18-2026 at 12:26am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAnd I\u2019ll add the person I spoke to at Bryston has been there a long time, is knowledgeable as well as caring and a good listener. Have used him to troubleshoot in the past. Know and like him.\nzlone\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,431 posts\n07-18-2026 at 01:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGlad you got things fixed. AI has helped me resolve a number of issues.\nnogaps\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n187 posts\n07-18-2026 at 02:46pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n...just moving my post here from the abandoned thread on this topic..\nI\u2019ve used AI to figure out a number of complicated issues that are waaay outside of my field and beyond my expertise. It has solved every one with a good solution and an equally good explanation of why it works along the way. You have to keep an eye on its logic as sometimes it takes a wrong turn, but I\u2019ve always been able to notice it and steer it in the right direction.\u00a0 I\u2019d imagine, at some not too distant future, AI will become much like the telephone in the 40s & 50s..sort of a stock household item.\u00a0 It\u2019ll be a standard way of managing an increasingly specialized world.\nnogaps\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n187 posts\n07-18-2026 at 02:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOn page 2 of this thread:\nhttps://forum.audiogon.com/discussions/eminent-technology-lft-8c-robert-greene-review?page=2\nis another example of AI working through an question I had.\u00a0 I should have cleaned up the AI output before posting it..but.. next time.\u00a0 It was a very instructive lesson in speaker setup. The final calibration curve makes the setup in any room a breeze for anyone with the LFT speakers.\ncleeds\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,635 posts\n07-18-2026 at 02:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\ntlcocks\nI\u2019d rather not say. But suffice to say the amp was exhibiting a multitude of symptoms ... whereas Bryston rep just ultimately said to send them the amp. They also said they would likely have it a while, like months ...\nFrankly, what you say does not really suffice. You claim a somewhat unsatisfactory experience with Bryston, then clam up about the conversation and the name of the Bryston rep.\nnogaps\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n187 posts\n07-18-2026 at 03:27pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nA little harsh.\nLighten up Francis.\ncleeds\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,635 posts\n07-18-2026 at 04:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYour feelings may be hurt now, but that sensation will pass. You'll be ok.\npeter_s\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,443 posts\n07-18-2026 at 05:26pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@tlcocks\nlet\u2019s be clear\u2026 This is not an amplifier issue\u2026 This is a wiring issue.\ntlcocks\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n588 posts\n07-18-2026 at 05:47pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYes yes it is a hot signal issue. I\u2019ve learned to tame it. It\u2019s not an amp issue. It\u2019s how a pro piece w inherent hot signal interacts with my amp. And no, I don\u2019t expect Mike at Bryston to know much about putting transformer balanced +4 dbu gear in his integrated tape loop. So I hold nothing against him. You have pulled me in the weeds. My point was AI was extremely helpful, no, critical to my understanding and preventing protective auto shutdowns. Yes AI got off on the wrong track but I was able to redirect it. And u","title":"How AI fixed my Bryston integrated\u2019s crashing problem","url":"https://forum.audiogon.com/discussions/how-ai-fixed-my-bryston-integrated-s-crashing-problem"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n199004-225279\nEdit\nThe Other Half of Your Stereo's Signal\nHello!\nFor years I have been learning about ways to improve my system. That is when I ran into the reality of power supplies. The power supply supplies the canvas on which our components create the output signal. If the canvas has imperfections, so will the output signal.\nHere is something I recently wrote about power supplies and would like to share.\nA guide to power supplies: switching, linear, battery, supercapacitor, and the tube-rectified road less travelled.\nejh369\n07-12-2026  4:21pm\n3 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\natmasphere\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n12,453 posts\n07-24-2026 at 07:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou might want to revise the bit about tube rectifiers:\nTubes are problematic as rectifiers because they have a filament. When the AC line Voltage changes, of course the Voltage to be rectified changes too. The filament Voltage changes too, which has a direct effect on the efficiency of the rectifier.\nA tube rectifier also has a Voltage drop across it, which has to be allowed for in the design of the power transformer.\nIf the AC line Voltage goes down, the rectifier cools off a bit and the Voltage drop across it becomes higher. The converse happens when the AC line Voltage increases.\nThe effect is the rectifier exacerbates the change in line Voltage. This makes the amp or preamp more sensitive to line Voltage variation than if solid state were used.\nA second problem is the Voltage drop across the rectifier changes as more current is drawn. This makes it harder for a power amplifier to make full power as the B+ Voltage sags (unless the current draw is constant, as might occur in a class A amplifier). This sag can be quite significant. I've seen power supply Voltages change as much as 50V on this account from idle to full power.\nSemiconductors can be made to be every bit as quiet as a tube rectifier. That is a matter of understanding how to properly snub the rectifiers and transformer so they don't radiate noise.\nIn a nutshell there's no good excuse for using a tube rectifier in a new design unless the design is intended for a blues guitar amp or the like.\nwillywonka\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n516 posts\n07-24-2026 at 07:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@atmasphere\nInteresting information! I have a BAT VK-80 tube preamp and always wondered why it had tube regulation but not tube rectification. I noticed a trend with many companies doing this.\natmasphere\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n12,453 posts\n07-24-2026 at 07:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@willywonka\nOnce there is a regulator involved, the kind of rectifier used is no longer relevant. You're listening to the regulator, not the rectifier.\nMore to discover\nWorst speakers at Stereophile show\nCan anyone tell me when XLR connectio...\nHow should I install the new tubes in...\nPreamp or Surround Processor for Stereo?\nbest stereo amp 1000 for polk sda1B\nBricasti M5\nVolumio Primo Plus\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"The Other Half of Your Stereo&#39;s Signal","url":"https://forum.audiogon.com/discussions/the-other-half-of-your-stereo-s-signal"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198631-14932\nEdit\nAudioSage \u2014 free audiophile app, looking for beta testers (Android)\nHi everyone,\nAs a dedicated Audiophile I am always looking for ways to improve my knowledge and stay up to date on the news.\nI built a free Android app for the North American hi-fi community \u2014 upcoming show listings, industry news aggregator, and show report links all in one place. Working on getting it through Google's mandatory beta requirement (need 12 testers). Android users \u2014 would appreciate 2 minutes of your time.\nI have created a google groups list. You join the list and the first message tells you how to access without giving out your email.\nhttps://groups.google.com/g/audiosage-beta\nI really need testers, if you can signup you don't have to install if you don't have the time.\nWhat it does:\nAI assistant (Gemini-powered) trained to answer hi-fi questions \u2014 headphones, cartridge matching, phono stage gain, speaker placement, system synergy, etc.\nPhilosophy tuned AI. Choose how you want your guidance: measurement driven, ear focused, or a balanced blend of both.\nAggregated news from Stereophile, Analog Planet, Audio Science Review, Positive Feedback, Enjoy the Music, and others\nNorth American audio show calendar\nQuick links to the major audiophile forums and used-gear marketplaces (SHF, Audiogon, Reverb, etc.)\nDaily \"Today in Hi-Fi\" briefing\nVideo of the day\nIt's completely free \u2014 no ads, no subscription, no account required.\nHonest feedback \u2014 good or bad \u2014 is very welcome. The whole point of the testing phase is to catch things before a wider release.\nThanks for your time.\nctbarker32\n06-04-2026  2:47pm\n10 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ngkelly\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,124 posts\n06-04-2026 at 06:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nJust another step in a google search. I would think that by the time a person realizes they are an audiophile, they will have already a good understanding of how to gather information.\nctbarker32\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n13 posts\n06-05-2026 at 01:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGood point. But with plain Google searching you will get a mixture of good and bad information. With the AI assistant you get a more intelligent summarization of information. For example, I was helping a friend with finding a good cartridge for his old EMT tonearm. Because of the lightness of the arm, it needs a high compliance cartridge for the best resonance and bass response. He had been recommended a ZU potted Denon 103. If you check many forum postings (google search) you will see people suggest this combo. But in fact this is a poor combo since the Denon low compliance when paired with the EMT arm the resonance frequency is pushed well out of the acceptable range and result in poor\u00a0 bass response which we heard. AI was able to inform us with this information with the math calculation to back this up. Good luck just using search.\ndekay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,249 posts\n06-05-2026 at 04:02pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhat's an app?\nDeKay\npindac\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,236 posts\n06-07-2026 at 07:10pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe Dinosaurs of Audio i.e, regular forum contributors, are off the view they have taken their Audio as far as they need to when they use a 'App'lication to support their Streamed Content.\nThe future of Audio is portable, not stationary and 'App'lication saturated.\nAs an App launch and request for Beta Users, I suggest a change in the demographic is looked into.\nctbarker32\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n13 posts\n06-11-2026 at 04:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAudioSage is gaining momentum. Remember this is the beginning. Many paths and ideas are being generated. You can shape its future by your input. According to Google I have to hang on to my testers for another week or so and then I can publish to the public Google app store. Tell your friends. If I get 100 downloads once it is live, I will pursue a iPhone version. Google charges a one time fee of $25 to developers. Apple, charges $100 every year to developers. It makes it more expensive for small developers. Thanks.\nozzy62\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,753 posts\n06-11-2026 at 05:27pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nLet me know when it's available for iOS.\ncurtisvill\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n78 posts\n06-13-2026 at 09:47pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have ChatGPT trained to answer music and audio questions based on my system and music preferences. I have found it very useful. I would be interested in an iOS version if it\u2019s released.\nctbarker32\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n13 posts\n06-20-2026 at 09:50pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAudioSage\nis now live in the Google Play Store\nhttps://play.google.com/store/apps/details?id=com.audiosage.app&pli=1\nI would like to thank everyone who took the time to test my app and help me get to live Production in the Google Play Store. Your feedback was invaluable in making my first release as good as could be. I sincerely hope that everyone finds it useful and fun to use.\nIf I can get 100 downloads, I will start work to get the app into the Apple App Store.\nPlease tell your friends and encourage them to download the app. Below is the link to the public store listing and the description of the features in the version 1.0 release. If you were a tester, please update to the production release in the store.\nhttps://play.google.com/store/apps/details?id=com.audiosage.app&pli=1\nAudioSage\nYour AI audiophile companion \u2014 news, gear tracking, and system advice.\nAudioSage\nis the free hi-fi companion built for the North American audiophile community. Stay on top of the hobby, get expert AI advice, and track your system \u2014 all in one place.\nAI ASSISTANT\n\u2022 Ask anything about hi-fi gear, turntable setup, speaker placement, cables, and more\n\u2022 Get a personalized system analysis \u2014 add your components and let AudioSage evaluate synergy, identify your weakest link, and recommend a priority upgrade\n\u2022 Powered by Google Gemini with 20 free messages per day\n\u2022 Set your listening philosophy: Measure First for the spec-driven crowd, or Trust Your Ears for the musicality-first listener\nAUDIOPHILE NEWS\n\u2022 Curated daily feed from the community's most trusted sources: Darko Audio, Stereophile, Tracking Angle, The Absolute Sound, Hi-Fi News, AudioScienceReview, and more\n\u2022 Industry news, show reports, and deep-dive reviews all in one scroll\n\u2022 Bookmark any article to read later\nVIDEO OF THE DAY\n\u2022 Fresh audiophile content from YouTube, updated every day\n\u2022 Covers reviews, show coverage, setup guides, and listening sessions\nMY SYSTEM\n\u2022 Build a profile of your gear by category \u2014 turntable, cartridge, phono stage, DAC, amp, speakers, and more\n\u2022 Add notes to any component for context\n\u2022 One tap to get a full AI-written analysis of your entire system\nSAVED & ALERTS\n\u2022 Bookmark articles across all news sections and revisit them in your Saved tab\n\u2022 Set keyword alerts to get notified when topics you care about a","title":"AudioSage \u2014 free audiophile app, looking for beta testers (Android)","url":"https://forum.audiogon.com/discussions/audiosage-free-audiophile-app-looking-for-beta-testers-android"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198975-120525\nEdit\nBest practices to  clean the binding posts on your speakers and amps?\nI'm moving my speakers around again due to a low WAF where they are now and It's been a while since I cleaned the binding/plugin posts on my speakers and also on my amps.\u00a0 I currently am trying banana plugs to hook up my speaker wire, and I want the best contact with a smooth, clean connection.\u00a0 What do you guys do?\naudio-oldie\n07-08-2026  8:25pm\n31 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nozzy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n7,835 posts\n07-08-2026 at 09:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI use 90+% Isopropyl Alcohol with a Q-tip.\nozzy\nkennyc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,146 posts\n07-08-2026 at 10:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCaig Deoxit is a popular audiophile choice. Haven\u2019t checked recently for the latest products.\nbuellrider97\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,066 posts\n07-08-2026 at 10:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI use the Caig Deoxit kit and an appropriate brush. Cheers , Mike B.\nkennyc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,146 posts\n07-09-2026 at 02:20am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCareful cleaning plated connectors to not rub them off.\nClean first with IPA (Alcohol).\nCaig Deoxit D100L to clean, G100L to protect, maybe use IPA between. Some kits have both.\nsbwheelrepair\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n7 posts\n07-09-2026 at 03:47am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI live on beach and can tell you the way Ive had great luck disassembling as far as you feel comfortable, then microfiber or white scotchbrite as most aggressive (being careful not to scrub off plated metals) by using the 5% deoxit red spray can to clean as much residual dust and oxidation as possible, then I\u2019ll finish with the 100% deoxit gold formula in the nail polish container to protect and it lasts at least 6 months to a year. Absolutely worth the effort to keep everything looking like new.\nzx10\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n167 posts\n07-09-2026 at 07:14am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGood advice here.\ncorelli\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,203 posts\n07-09-2026 at 01:22pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI follow a similar pathway.\nI like to use small foam swabs--get them on Amazon.\nIf a pure copper post, I would clean with Caig Deoxit, then pure isopropyl alcohol to remove any residue, then a thin layer of Caig ProGold.\nIf a visibly clean plated connector, then I just use the alcohol followed by ProGold.\ndekay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,249 posts\n07-09-2026 at 01:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI use the finely woven microfiber cloths that I receive with my eyeglasses and this...\nhttps://mgchemicals.com/products/electronics-maintenance/contact-cleaners/contact-cleaner-spray/\nDeKay\nspeedysteve4\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n69 posts\n07-09-2026 at 02:14pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFunny, I have never noticed or even looked at the terminals.\u00a0 Do they really get dirty?\njasonbourne71\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,904 posts\n07-09-2026 at 03:12pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@speedysteve4\nNot really! I buy used gear and after a thorough cleaning I give the terminals a spray and wipe with isopropyl alcohol. After that I don\u2019t bother with further cleaning. I have not noticed any change in the sound years later.\nspeedysteve4\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n69 posts\n07-09-2026 at 03:50pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks Jason, I\u00a0 thought so and my wife loves your movies!\njimmyblues1959\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n238 posts\n07-09-2026 at 04:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI think isopropyl alcohol makes sense. I do remember many years ago, someone suggesting to simply pull the banana interconnects out of a speaker\u2019s inputs and then plug them back in again. The same was suggested for cleaning the inputs and outputs on preamplifiers and power amplifiers.\nI wish that I could remember who suggested this method of cleaning the inputs and\u00a0 outputs of audio gear, but\u00a0 it was many years ago.\nrichardbrand\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,544 posts\n07-09-2026 at 09:50pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@jimmyblues1959\nmany years ago, someone suggesting to simply pull the banana interconnects out of a speaker\u2019s inputs and then plug them back in again\nBack in the day, that was a common explanation for why cables sounded different.\ninagroove\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n302 posts\n07-09-2026 at 09:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOver the years, I have used both Caig Deoxit and Stabilant 22 ($).\nBoth clean well, and Stabilant 22 is a conductive polymer, so in theory, I have better conductance.\nGood luck\njimmyblues1959\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n238 posts\n07-09-2026 at 10:54pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@richardbrand\nTo this day I\u2019ve never used any type of cleaner for my interconnects\nor speaker cable and IME they sound fine. \ud83d\udc4d\nmotown-l\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n384 posts\n07-09-2026 at 11:34pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019ve only cleaned terminals on used equipment and only if there is obvious corrosion or shorting. Deoxit and a microfiber cloth have been sufficient. I have used Deoxit and the \u201cpush pull\u201d method on internal wire harnesses and cartridge/headshell pins.\nfaustuss\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n973 posts\n07-10-2026 at 08:15am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@audio-oldie\nUnplug and reinsert.\ncorelli\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,203 posts\n07-10-2026 at 11:29am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n\"Unplug and reinsert\"\nKind of like never brushing your teeth---just bite into an apple and call it good\nsecretguy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,000 posts\n07-10-2026 at 01:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSpic and Span.\nSeriously...some of these questions....\nfaustuss\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n973 posts\n07-10-2026 at 03:54pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@corelli\n\"\"Unplug and reinsert\"\nKind of like never brushing your teeth\"\nI bet you put yours in a glass!\nspeedthrills\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n221 posts\n07-10-2026 at 08:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI lick mine clean.\nspatialking\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n704 posts\n07-11-2026 at 06:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe Deoxit cleaner and preservative is the ticket.\u00a0 It's superb on electrical connectiond from MC phono leads to speaker terminals.\nNoalox is a compound made for copper-copper, copper-aluminum, and aluminum-aluminum connections.\u00a0 It consists of tiny zinc spores in an evaporative carrier.\u00a0 When compressed the zinc spores bite into the metal co","title":"Best practices to  clean the binding posts on your speakers and amps?","url":"https://forum.audiogon.com/discussions/best-practices-to-clean-the-binding-posts-on-your-speakers-and-amps"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n1087670885\nEdit\nCan I suspend / hang speakers?\nAll right, I'm setting up a home theatre for dad (father's day and all), and he'd prefer to suspend the rears from the rafters rather than have stands. It seems...well...you know. Can someone give me a sound technical reason this is a bad idea? Thanks. -Dave\ndbw1\n06-19-2004  6:48pm\n24 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\npanny\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n99 posts\n06-20-2004 at 12:56am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSeeing that no one else has answered I think I shall!\nI cannot see any problem with doing it as I have thought about it myself.\nAs long as they are suspended correctly ,taking how they should be if on stands and vibration is minmised.\nIf the tweeters are at ear level the speakers should perform adequately and maybe better seeing there is no stand involved.\nJust thinking!\nc123666\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n871 posts\n06-20-2004 at 02:44am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe tweeters don't have to be at ear level; they can be angled downward so that they are pointing at ear level. I helped a friend install his home theatre and we hung a pair of Linn Tukan bookshelf moniters and a Linn Centrik from the ceiling using mounts from Good Guys. The Tukans are rear ported and sound great on the ceiling; just enough additional bass from the ceiling to give them a little more weight.\nJust make sure the mounts you use are more than adequate for the speaker; ie, don't use one rated for 30 lb max for a 30lb speaker. Get a larger mount in that case; overkill it.\ndbw1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n173 posts\n06-20-2004 at 04:18am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSorry, I wasn't clear. He's talking a non-rigid mount, like with chain, rope, etc., that could be raised and lowered easily.\nswampwalker\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,138 posts\n06-20-2004 at 04:27am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNon-rigid mount would be a bad idea, since the speakers would move in the opposite direction as the cones, according to Sir Issac Newton's First Law of Thermodynamics (at least I think it #1)- for each action there is an equal and opposite reaction. Only a little bit, but think how hard we try and make sure that speaker stands are rigid.\nmwilson\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n430 posts\n06-20-2004 at 06:46pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI did this in college when I lived in a storage room for a term (cheapest rent ever!) Hung 2 Boston Acoustics A60s from the rafters. Can't remember if they sounded good because I was drunk most the time. I doubt they did. There was a hardhat on the wall, in case anyone felt uncomfortable with it.\nexertfluffer\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n270 posts\n06-21-2004 at 07:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYeah hanging from pipes mounted to the ceiling Joist would be sonically much better, all things considered(should strongly consider finding best sonic placement \"in space first\"). simply letting the speakers \"hang\" wouldn't sound so good, unless the speakers were \"so heavy\" they wouldn't react much to movement in the speaker.\nI would \"X\" the hanging idea with chains, etc, yes. I mean, if the speaker is haning there anyway(obstructing walkways, etc), you might as well \"hard mount\" the suckers!\nwadedwyer\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n37 posts\n06-25-2004 at 08:12pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSomeone has to say it...\nIt was Newton's THIRD law of MOTION\nvs 1st of thermo.\n\"For every action, there is an equal and opposite reaction.\"\nIf I didn't think Newton was the greatest scientist ever I would have kept my mouth shut. Regardless of the historical slip you make an excellent point regarding the tendency of suspended speakers to shake themselves rather than produce sound.\nswampwalker\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,138 posts\n06-26-2004 at 04:09am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThank you Wade- Its been over 30 years since I studied any physics. I was just guessing on which law. I'll gladly take you word for it.\nrichingoth\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n326 posts\n06-26-2004 at 10:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHere is required reading for rigging flyable speakers from ATM-Flyware:\nhttp://www.atmflyware.com/downloads/riggermeister%20guide.pdf\nIf you don't do it correctly, DON'T do it at all.\neldartford\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,262 posts\n06-27-2004 at 01:12am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPoor Issac must be spinning in his grave! Yes, the voice coil will push with equal force on the driver cone and on the speaker enclosure, but Newton also came up with F = M*A, which tells us that movement of the massive enclosure will be tiny.\nThe only drawback to hanging speakers by chains is cosmetic. If the wife agrees, go for it.\nswampwalker\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,138 posts\n06-27-2004 at 02:16am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe movement of the enclosure will indeed be small, but given the generally universally accepted goal of rigidly mounting speakers, why in the world would you hang them in space, to let them move (swing) on their own? Imagine a recording with bass almost entirely in one channel, with large excursions of the woofer and small excursions on the other side, sending the imaging info all to !@#$. Remember that our ears/brains use millisecond delays to localize sound. YOu would't consider mounting speakers on a columnar spring which could move around in response to the driver motions; isn't this similar to what you are considering by hanging them? Maybe one of our speaker designer/builders could chime in. Maybe my intuition is completely wrong here.\ninpepinnovations1e75\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n395 posts\n06-28-2004 at 10:05pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSwampwalker, be carefull of intuition and \"common sense\", they are what people use to explain that heavier objects fall faster than light ones.\nThe movement caused by the counter movement of the speakers can be calculated to be virtually, if not literally, nil.\nswampwalker\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,138 posts\n06-29-2004 at 01:40am\nCopy Comment URL\nReport Comment\nEdit\nDelete\ninpenin- I agree with your comment on intuition. Point made. However, I do not believe that allowing a speaker to move freely in space (even a small amount) is beneficial to good sound. I must admit I will NOT hang my 90 lb Merlins from the ceiling when they arrive to experiment.\nedesilva\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n768 posts\n06-29-2004 at 12:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOk, has anyone done the math? I'm no physicist, but can't you figure out the force caused by the displacement of air for a single note, the force caused by the movement of the voice coil, and, based on the weight of the speaker, figure out how much reverse displacement would be caused? Wouldn't that give you a damping factor? Granted, its p","title":"Can I suspend / hang speakers?","url":"https://forum.audiogon.com/discussions/can-i-suspend-hang-speakers"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n199042-117078\nEdit\nMy insane discussion with AI over my audio setup\nhttps://www.google.com/search?q=starting+anew%2C+mating+Charter+Oak+PEQ-1+with+Bryston+B135+sst2+tape+loop%2C+which+is+the+better+pinning+scheme+for+the+XLR+ends%3F+1.+all+four+cables+with+pins+1+and+3+tied+2.+the+cables+going+IN+to+the+PEQ-1+with+pins+1+and+3+tied+and+those+going+OUT+of+the+PEQ-1+with+pin+3+floated+%2C+or+3.+the+input+cables+to+the+PEQ-1+floated+and+the+output+cables+FROM+PEQ-1+with+pins+1+and+3+tied%3F&client=safari&hs=UECq&sca_esv=8661daf777ee415a&hl=en-us&sxsrf=APpeQnvxrJ3CEwvTm1Ga7h6f9djLPDKJsQ%3A1783170061094&fbs=ABfTbFXXq5_lq1-qc-RNbCT-iVCvZUY4OllCx8eHi2DBbGa2PoUPiBop7GRck9_ggqJeBKny0_cmhWLHKTpnHbnjZZoZA7z-WygYHTV3rFbFyCEbRNSZ_6o9cHFl6PGFaOXCUHcdgRIjvdc65vAdbHJHLJIfuKV-4WNQYYoJocyaZmsltXHHuEKHNHR6oZCElsfKPojmEK0PrrKywkMi6l4zivqHrOVST0DrtfOEuDWA8kYkIszFd8k&aep=1&ntc=1&sa=X&ved=2ahUKEwjK5cKQirmVAxXIG9AFHbhOA7oQ2J8OegQIDhAE&biw=402&bih=714&dpr=3&mstk=AUtExfCkNEqRXWChbCn72MVyTmnzEh5I_qV0-1I3sXTpbkNi2ewrOAaxzgNrnhQETLq7mm1tv5tfpID74FgpsHZtDi_J2mmJw7gQt77bomEBEIqInm81lfoZJyfiJLLO_QiR73S8wB_zDQBbp-qvhv-Cav62EGOHGbe2-eik7WLHC7TdlW0NvEoH-A_c_DFKd8PCCzaRUcBWbzXnJxbADEWVUn-heXZ_IkiJ5oVQgomX3wp78A0Ud8txMYIHiKJvAS9J4gY2sj3FVsYHlPHRZZc5g252257GelyNTB1xDCeCaMtYOAVRNMS_hiA-jN8MSqaXcnl-FCFn_lgSdtk9UlMWFKoXNHfVBXI77cdAlmJ3WXaTXRX-4rv014m2K78qQ9w964y40KO6-b0vdZmqTgnMASxg_k5xX_0dNov6YYQ4nE8L-eROQqE1_ht-Spcjt3l6FrK5PmFkIybJVW2IVMp7jUaauMYs_pQ6MkE-gv9LjNjSDMfrDcMfEpel_9d5iu5rHsWrcXeqrGSZguM8lc8YaohF9FRb40qYM5ROevP87QZYU2Ej5B-E&csuir=1&mtid=EQRJaqGSBIaZwbkPt_GB8As&udm=50\ntlcocks\n07-17-2026  2:14pm\n10 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ntlcocks\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n588 posts\n07-17-2026 at 02:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOkay\u2026big breath. I have had amp crashing issues lately. So I relentlessly pursued this with AI. While it has stumbled along the way, and the path was long and circuitous, it has delivered me all the answers I need on a very complex topic. Copy and paste the entire previous post into a browser and you are good to go. WARNING. It is very long over days. But I am posting it as it fully illustrates AI abilities and limitations in the sometimes very complicated world of audio. All of that is on full display here.\ntlcocks\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n588 posts\n07-17-2026 at 02:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBTW, AI gave me the answers that Bryston tech support could not.\nnogaps\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n187 posts\n07-17-2026 at 02:36pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe initial post mess aside, I\u2019ve used AI to figure out a number of complicated issues that are waaay outside of my field and beyond my expertise. It has solved every one with a good solution and an equally good explanation of why it works along the way.\u00a0 I\u2019d imagine, at some not too distant point, AI will become much like the telephone in the 40s & 50s..sort of a stock household item.\u00a0 It\u2019ll be a standard way of managing an increasingly specialized world.\nOP..Agon has a chain-link type icon just to the right of the smiley face where you can enter the really long links and rename it with a short term like \"how I fixed my Bryston audio issue:\"\nI tried the link and it appears only a small snip of the conversation appears.\ntlcocks\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n588 posts\n07-17-2026 at 03:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOh thanks. Will immediately fix\ntlcocks\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n588 posts\n07-17-2026 at 03:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHow AI fixed my Bryston problem\ntlcocks\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n588 posts\n07-17-2026 at 03:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSuper. Thanks! \u00a0Opening the link puts you at the END. can scroll up all the way. \ud83d\ude0a\ntlcocks\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n588 posts\n07-17-2026 at 03:18pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nRepackaged post. Click here\ntmortsd\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n75 posts\n07-18-2026 at 04:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI had an issue getting my iPad to reconnect to my hifi rose unit after it performed an update\u2026..using ChatGTP I eventually dialed in the issue which believe me I\u2019d of never figured out and was very obscure\u2026.so while the entire process was a bit infuriating to say the least, at least it got me there.\nAI isn\u2019t good for everything but it can be a great help for something\u2019s!\nalfa100\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n242 posts\n07-18-2026 at 11:36pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAI is excellent. It makes silly mistakes easily picked up and I get an apology. \u00a0Yet it provides great and accurate suggestions \u00a0 Helped me a lot.\nadasdad\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n164 posts\n07-19-2026 at 12:07am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@alfa100\nI\u2019ve used AI to help with music streaming issues within my present system that would have taken me a lot longer to solve on my own. When the AI bot replied that my setup was fairly good enough, that\u2019s all I needed to know.\nMore to discover\nRoom for discussion?\nArm and cart resonance range -- discu...\nDiscussion and information Roon 1.7 a...\nAnother new music room construction d...\nHales owners discussion\nBricasti M5\nAurender N100H\nAyon Audio S-10IIxs\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"My insane discussion with AI over my audio setup","url":"https://forum.audiogon.com/discussions/my-insane-discussion-with-ai-over-my-audio-setup"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198957-162757\nEdit\nBattery powered front end\nOver the past week I\u2019ve been running my entire front end on battery power: LTA MZ2 LPS, Innuos Pulse, Bryston BDA\u20113, and Schiit Kara. The setup was straightforward, completely safe for the gear, and extremely convenient in day\u2011to\u2011day use.\nThis all started because I wanted a backup power solution for outages. While researching options, it dawned on me that a high\u2011quality inverter might also serve as a clean AC source for my system. I picked up the unit, added a new power strip, and set everything up in my listening room. After reading the manuals carefully, I began with the Kara \u2014 my least expensive component \u2014 just to be cautious. Everything behaved normally, so I added the streamer and DAC. Music flowed immediately.\nThen came the real test: I pulled the charger\u2019s plug from the wall. The system switched to battery power instantly, without even a hiccup. And the sound was fabulous.\nI\u2019m using the Ecoflow Delta 3 Plus, which provides 1800W continuous / 3600W peak output and has a pure sine\u2011wave inverter. My front end draws only about 80W total, so there\u2019s ample headroom. It offers three IEC outlets plus four two\u2011prong outlets. For distribution, I\u2019m using a Furman PL Plus\u2011C, mainly for convenience \u2014 its filtering is there if needed, but interestingly, my three solid\u2011state components are dead quiet even when plugged directly into the battery. Surge protection and voltage regulation are irrelevant here since the battery is the power source.\nMy routine is simple: the battery stays plugged in when I\u2019m not listening. When I sit down for a session, I unplug the charger and the system runs purely on battery. No interruption, no drama, no shift in tonal balance. But one sonic change is unmistakable: Sibilance is gone. I\u2019m very sensitive to it and have tried multiple approaches over the years. Battery power has produced the most dramatic reduction of all. When I shut down my tube preamp, I plug the charger back in and the cycle continues.\nAfter five days of listening, I haven\u2019t found a single downside. I didn\u2019t think I had a power\u2011quality issue, but now I know my entire front end is isolated from the grid until the signal reaches my power amp. The reduction in sibilance suggests that some HF noise or interference may have been modulating the upper frequencies \u2014 and battery power simply removes that variable.\nI\u2019m curious whether anyone else has experimented with battery\u2011powered front ends and what results you heard.\nmashif\n07-06-2026  2:07pm\n13 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n07-06-2026 at 11:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nInteresting experiment\u2026 but I would be a little careful with the conclusion. You are not actually running the system directly from a battery. You are running it from a battery feeding a switching inverter which regenerates AC. \u201cPure sine wave\u201d is a good start, but it does not tell us much about the inverter\u2019s RF noise, common mode behavior, output impedance, or grounding scheme.\nAt roughly 80 watts, the EcoFlow has abundant capacity for a streamer, DAC, and preamp, so there is no reason it could not work well. Still, others who have tried UPS and inverter power have sometimes heard the opposite\u2026 reduced dynamics, a little hardening, or generally less natural sound. It seems very dependent on the particular inverter and the particular system.\nThe change you hear may be quite real\u2026 but it may be less a matter of \u201cbattery power is inherently cleaner\u201d than the charger being disconnected, or the grounding and noise paths in your system changing. The front end is not necessarily fully isolated from the house because the interconnects to the power amp, and possibly Ethernet to the router, can still provide paths back to ground.\nI would also not say voltage regulation and protection are irrelevant. The grid is out of the picture while unplugged, certainly\u2026 but the inverter is now the voltage regulator, and its behavior becomes part of the system. Still, if repeated comparisons continue to show the same reduction in sibilance, then you have found a useful solution to a real problem in your particular setup.\nmashif\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n505 posts\n07-07-2026 at 12:35am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@ghdprentice\nThanks for bringing my attention to possible issues. That's why I posted.\nFWIW, I have an iFi LAN filter in front of the Pulse and I'm running a fully balanced system. The LTA preamp SE output goes into the Schiit Nexus circuit and becomes a balanced signal with no additional gain. My system is very black even without the battery but the reduction in sibilance with battery power suggests HF noise was present. The Furman has a front panel LED display for voltage. I've watched it while I change from AC to battery and it doesn't even flicker. It remains stable during use.\nI have discovered a minor issue. The \"pure\" sine wave isn't pure enough for toroidal transformers. Under battery power, if I put my ear right up to the LTA power supply, I can hear a faint buzz. It's a purely mechanical issue that shouldn't affect audio but makes the transformer run a bit warm. Since it's plugged in when I'm not listening, the transformer only deals with it a few hours at a time.\nI'm still deciding if it's worth it.\ncdavids449\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n21 posts\n07-07-2026 at 12:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI've been using battery power for my front end for several months. Everything has improved including surprisingly the bass. I'm using Exceltech xp1100 inverter which from research has the lowest THD if any inverter out there. Batteries are Lifepo4 200ah 12volts.\nnoromance\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10,536 posts\n07-07-2026 at 02:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI am with\n@ghdprentice\non this. You should get the results you want with an isolation transformer which acts (among other electrical benefits) as a high impedence to high frequency noise on the line. If you prefer battery powered units, use linear power supplies and avoid SMPS.\nsid-hoff-frenchman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n69 posts\n07-07-2026 at 04:09pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have been powering my system with an Anker c1000 & bp1000 battery and expansion battery for several months now. The improvement is as you indicate - stunning. Once I figured out a convenient way to charge the batteries back up in between listening sessions it\u2019s been smooth sailing. The only actual issue I encountered was the battery power, or maybe it was just the loud inverter, caused a small mechanical buzzing in components. I added IFi DCBlocker+ units to each component and it has eliminated that problem. The overall result is absolutely worth the effort though because switching to the battery power has not just been a tweak, or incremental improvement, it is an order of magnitude better, and the sound was no slouch to begin with.\nmashif\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n505 posts\n07-07-2026 at 06:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@sid-hoff-fren","title":"Battery powered front end","url":"https://forum.audiogon.com/discussions/battery-powered-front-end"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197504-169725\nEdit\nPower conditioners\nSeems that engineers who work in industries that demand actual control or reduction in EMI/RFI and other things, use industrial power filters that actually do what they claim to do and they have the measurements to back it up. The Shunyatas and all the rest of the audiophile associated pieces that are basically a fancy power cable receptacle, rely on what they hear (and any objective, rational person knows that is 100% subjective and not valid).\nRead about it here\nroadcykler\n02-09-2026  3:13am\n37 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ngkelly\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,124 posts\n02-09-2026 at 10:47am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHeadphonesty would have us all listening to a couple of cans and some string. telling you that it is the same as some Klipsch Jubilee\u2019s. Dumbest website ever made by\u2026\nhilde45\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,101 posts\n02-09-2026 at 12:13pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI can\u2019t speak to the details, but it\u2019s pretty clear that there are pro tools that do a good job for audiophiles without the audiophile mark up.\nI\u2019ve read about people who claim equal or better performance for various products out of pro lines for a lot less money. Of course, the ear must be the guide, but often audiophiles are easy targets for markup.\nSome examples I\u2019ve read are people who use pro equipment as powered studio monitors, professional DACs/interfaces, headphones, and cables.\nThe audiophile market often emphasizes subjective qualities, exotic materials, beautiful casework, and brand heritage\u2014all legit preferences, I guess, but they can result in diminishing returns on actual sound quality.\nOf course some professional gear is voiced for mixing/mastering (clinical, fatiguing for long listening) rather than enjoyment. And...some audiophile designs do explore legitimate engineering approaches (certain tube implementations, specific driver technologies) that differ from pro priorities. So, the issue is complicated.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n02-09-2026 at 04:27pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHeadphonesty is an interesting place to get your facts from.\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n02-09-2026 at 05:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe only thing is. Power conditioners like Shunyata significantly improve the sound on high end systems. So, all the rational thought is a waste of time. Get one and put it in your system... then start thinking about why it happens... if you want. I just prefer to listen to the music.\ndougthebiker\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n231 posts\n02-09-2026 at 06:49pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf you\u2019re seriously considering a power conditioner, you should try the Kubala-Sosna Ovation.\nI tried the top of the line Nordost and a medium level SR model. And this significantly outperforms both, at a lower price. \u00a0Full disclosure, I have a tube system and 94 db efficient speakers.\nmotown-l\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n384 posts\n02-09-2026 at 08:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI use some entry level Panamax and Furman power conditioners ($200 to $300) range. What I noticed is mostly how much my video improved with reduced artifacts and halos. I also found that some grounding issues I have with my ancient two wire home circuitry were eliminated with these two conditioners. As far as sound improvement, I don't think my 70 year old ears and mid-fi system could reveal the difference with a four figure conditioner.\nbuellrider97\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,066 posts\n02-09-2026 at 09:33pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks for the thread , I\u2019ve always found this topic interesting. I had the usual entry level stuff like Monster and the cheaper Furman. I\u2019m currently using a Richard Gray 600 with a Shunyata Venom HP 20 amp cord. The only noticeable improvement came when I replaced the original Richard Gray cord with the Shunyata, the improvement was very noticeable. I\u2019ve always been curious about the Tripp Lite units, at $500 they interest me. FWIW I have a new service panel , dedicated lines and Hubble outlets. All my cords are aftermarket but having done all of that incrementally over time I never experienced an Ah Ha moment except for the Shunyata cord. FWIT my brother plays guitar and runs tube amps. He recently got on a regulated voltage kick, apparently in guitar land some are very concerned about voltage variations that affect sound or damage gear. My video gear is on a seperate circuit and the Monster power filter I use as a junction box reads from 117 to 122 throughout the day. Regards , Mike B.\nwolf_garcia\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,918 posts\n02-09-2026 at 09:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nA good power conditioner allows you to run your comb through your cables and gives them that nice sheen.\nbigtwin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,626 posts\n02-09-2026 at 11:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWell, the attached article does appear to be more or less an ad for OnFilter and their line of CleanSweep products.\u00a0 Nothing new about\u00a0 their product does nothing but our product does everything style of article.\u00a0 One thing I did agree with 100% was this.\n\"When conditioners\nused successfully, they are\ntypically industrial-grade devices\n. For instance, users who measure performance point to lab-oriented equipment, e.g.,\nElgar units\ndesigned for test environments, or balanced-power installations such as a\n10 kVA Equi=Tech\ntransformer\".\nAnd it's just a coincidence that I have an Equi=Tech 5RQ step down transformer in my system.\u00a0 \ud83e\udd23\nmark200mph\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n909 posts\n02-10-2026 at 12:40am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have the furman 20 I because we have alot of power spikes and it has served me well.they have 60 amps of reserves for the big kw amps for transients. Happy listening.\nroadcykler\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n360 posts\n02-10-2026 at 02:50am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nInteresting responses. Seems some of you aren't familiar with ad hominems.\nyoyoyaya\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,087 posts\n02-10-2026 at 11:21am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@OP \"The Shunyatas and all the rest of the audiophile associated pieces that are basically a fancy power cable receptacle, rely on what they hear (and any objective, rational person knows that is 100% subjective and not valid).\"\nI presume that you mean that the manufacturers of power distribution and/or conditioning systems [rather than the equipment itself] rely on what the hear and [you assert] that a rational person knows that relying on what one hears is subjective and [you assert] not valid.\nIt is perhaps a tad ironic that you are basing an argument which centres on subjectivity on a statement full of circular logic and entirely subjective and unsubstantiated statements made by yourself.","title":"Power conditioners","url":"https://forum.audiogon.com/discussions/power-conditioners-21"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n135800-10297\nEdit\nFurutech GTX NCF receptical break in, how long\nBought NCF with 6 day burn from seller. I have it burning in last 5 days on 2 cheap power bars with old desk top towers, fans, TiVo box, home theater amps. My amp and Preamp, phono stage and CD player are all tube so I don't use them. Ran system on outlet tonight and no bass, bright, sounds bad. First day with outlet it sounded very nice. Any owners of rhodium outlets can tell me what I'm in for time wise, or what to expect sound wise in next couple weeks, thanks\npaulcreed\n05-04-2018  4:46am\nNext \u203a\nLast \u00bb\n120 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nroberjerman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,319 posts\n05-04-2018 at 04:27pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGet out your meditation mat, light some incense and start chanting!\npaulcreed\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n584 posts\n05-04-2018 at 09:05pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'm not here to open a can of worms on cable or outlet burn in, just advice from others that that have experienced what I'm hearing. Am I looking at 3,4 or 500 hours of break in time? It would be nice if people like roberjerman would keep there sarcasm to themselves.\ndavid_ten\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,480 posts\n05-04-2018 at 09:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI don't have direct experience with Furutech's NCF Rhodium receptacles into the wall since all of my NCF Rhodium receptacles are in a power supply.\u00a0 Being the same receptacles, my findings may apply. They went through extended burn in at the builder's location (I don't remember how long; likely a week) and sounded very good after two weeks of active use in my system. I found marginal improvements / settling over the third and fourth weeks.\njond\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,109 posts\n05-04-2018 at 09:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nRhodium takes a seriously long time to break in so hang in there!\nauxinput\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,924 posts\n05-04-2018 at 11:02pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIn having burned in more than a dozen rhodium components, I would put the real burn-in at about 200-240 hours for anything that has a Furutech level of rhodium plating.\u00a0 It really depends on the system, but the last bit of 160-200 hours could be very bright, harsh and painful.\u00a0 Or you may not even notice it (an outlet is somewhat removed from the equipment circuit as you still have power cord, IEC, fuse to go through before the electrical hits your actual circuit).\npaulcreed\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n584 posts\n05-04-2018 at 11:18pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks, just want bass to come back,my speakers go low and its very bass shy and not worth listening to. I can handle tipped up treble.I'm at just under 300 hours. I was considering pulling it and moving it to fridge and freezer for a couple weeks.\npaulcreed\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n584 posts\n05-04-2018 at 11:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAuxinput is correct, painful treble did come in at around 160 hours and is unlistenable but that is gone now at 300 hours.\neverest_audio\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n285 posts\n05-05-2018 at 01:42am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDon't give up on it. It takes some time. Easily the best receptacle I've used.\npaulcreed\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n584 posts\n05-05-2018 at 09:06pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThis morning everything was the same. So I ran an long extension cord outside to air compressor. Rigged it so it runs continues, ran it 30 minutes then turned it off and on 15 or 20 times. Ran it 15 minutes then off and on 20 times did this for over an hour per socket, so maybe hour and half per socket. Hooked system back up bass was back highs were very smooth, I know it sounds crazy but it worked. After everything warmed up an hour or so this system has never sounded this good. Thank you for everyone's support.\ndavid_ten\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,480 posts\n05-05-2018 at 09:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGreat to hear it's performing to your expectations!\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,825 posts\n05-06-2018 at 12:19pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@paulcreed,\u00a0Just curious, is the outlet still sounding as good today as it did yesterday?\nPost removed\nMay 07, 2018\npaulcreed\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n584 posts\n05-10-2018 at 03:03am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nkosst_amojan, only problem my system has it's going to have to break in more NCF outlets because I'm buying more. After bass came back over next couple days it kept improving and became more and more enjoyable to listen to, actually shocked. Big tight bass and killer information retrieval but very natural sounding from an outlet, who would think. I didn't know $200 could buy this much improvement.\nauxinput\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,924 posts\n05-10-2018 at 05:27am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI suspect your outlet was not actually burned in for 6 days from the seller.\u00a0 Your loss of bass is typical for part of the burn-in process.\u00a0 Your initial 5 days of burn in was only about 125 hours.\u00a0 I usually recommend a straight 10 day (24/7) burn in before it really settles down.\ndavid_ten\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,480 posts\n05-10-2018 at 11:30am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n+1 @auxinput\u00a0 What you say may have been the case.\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,825 posts\n05-10-2018 at 11:47am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI agree, with the idea of burning in the\u00a0Furutech GTX NCF\noutlet 24/7 for at least 10 days, possibly\u00a0longer depending upon the method of burn-in. I've used my\u00a0Audiodharma cable cooker on five Furutech GTX-D Rhodium outlets that I left on for three weeks or longer but I don't know that they had to be burned in for that length of time. I have my first\u00a0Furutech GTX NCF\noutlet on the cable cooked now, sounds like its going to need the same amount of time from what others have written.\nPost removed\nMay 14, 2018\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,825 posts\n05-14-2018 at 12:26pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMany have posted on a variety of Audiogon forums that they have had the exact type of long break-in time with the\u00a0Furutech GTX-D Rhodium outlets, and I know many of these Audiophiles have excellent equipment.\u00a0Rhodium plated\u00a0items require a longer break-in as do cryogenitacly\u00a0treated products.\nPost removed\nMay 14, 2018\npaulcreed\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n584 posts\n05-14-2018 at 08:13pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nkosst_amojan, if you like here is my system, VTL mono blocks, Manley, BAT and Don Allen preamps, Exemplar Audio modded \u00a0Oppo tube CD player, Manley phono preamp, Linn lp12 Cirkus,with Pink Triangle Pink Linnk out board power supply, Soundsm","title":"Furutech GTX NCF receptical break in, how long","url":"https://forum.audiogon.com/discussions/furutech-gtx-ncf-receptical-break-in-how-long"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197101-541\nEdit\nDrawer belt Replacement on Esoteric SACD Player\nLooking for a good trustworthy Tech to replace the drawer belt in my Esoteric SACD/DVD Audio player.\u00a0 The model# is UX-3.\u00a0 As I live in New England, I do not want to ship the player to California for service at TAP Electronics.\u00a0 I have the service manual in my possession. The 65 pound player plus the triple boxes weigh in at close to 85 pounds and a round trip would be in the neighborhood of $1000-1200.00.\nIf you are a tech or know a good one, please let me know.\u00a0 If I did send it to TAP Electronics, it would take at least 6 months to get serviced, I would rather not wait that long.\u00a0 Thank s for reading.\nstereo5\n01-11-2026 10:26pm\n14 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nbigtwin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,626 posts\n01-11-2026 at 11:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThere appears to be many Esoteric retailers in England.\u00a0 They can't repair?\nstereo5\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,728 posts\n01-11-2026 at 11:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI guess I should have said the northeast in the USA.\nbigtwin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,626 posts\n01-13-2026 at 10:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSilly me, I missed the word \"New\".\njafant\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n21,760 posts\n01-17-2026 at 02:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nstereo5\nWe are both fans and owners of Esoteric players.\u00a0 Keep me posted on your repair progress.\nHappy Listening!\njafant\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n21,760 posts\n01-22-2026 at 03:19pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nstereo5\nhere are (2) possible Audio shops that may be able to assist;\nThe Vintage Audio Shop- Tonawanda NY\nVu Jade Audio - Montville NJ\nLet me know how the consultation concluded.\nHappy Listening!\nstereo5\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,728 posts\n01-23-2026 at 04:51am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@jafant\nThank you!\u00a0 I will try to contact tomorrow.\njafant\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n21,760 posts\n01-23-2026 at 09:07am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nstereo5\nMy pleasure.\u00a0 Keep me posted as I have a few other shops in mind.\nHappy Listening!\njafant\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n21,760 posts\n01-31-2026 at 11:21am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nstereo5\nCan I have an update?\nHappy Listening!\njafant\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n21,760 posts\n02-09-2026 at 08:06am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nstereo5\nIs your Esoteric player repaired?\nHappy Listening!\njafant\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n21,760 posts\n04-07-2026 at 09:40pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPM answered- stereo5\n68pete\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,045 posts\n07-03-2026 at 04:02am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have used Tap to repair my Esoteric K0 3x the drawer stop working. I live about 7 hours from them one way. \u00a0Dropped it off and they repaired it in about 30 hours. replaced the whole drawer system and the laser. (laser was fine) I would use them again. Sal was great.\njafant\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n21,760 posts\n07-11-2026 at 07:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n68pete\nThank You for posting your TAP experience.\nHappy Listening!\njafant\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n21,760 posts\n07-11-2026 at 07:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nstereo5\nHave you found a replacement Spinner?\u00a0 Update me.\nHappy Listening!\npindac\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,236 posts\n07-12-2026 at 01:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThere are tech services that cater for the DJ industry as well, where CDP's or CDT's need to be repaired and returned to active DJ's in a very short turnaround time. I would be confident that a discussion with such a service provider will introduce one to a service that can be trusted.\nWhen met with a very similar issue on a PS Audio PW Transport, the proposed method is one I investigated, along with using the PS Audio Forum to acquire information.\nThe PS Audio forum guidance supplied enough comprehensive information that I undertook the corrective work myself.\nMore to discover\nNew Esoteric G 01\nEsoteric DV-50 vs. Accuphase DP-75V\nEsoteric P-70 and D-70\nEsoteric K-03X vs Accuphase DP-720\nNon-Esoteric Audiophile Grade Crosspoint\nVolumio Primo Plus\nRSX MUSIC SERVER RSX MUSIC SERVER\nBricasti M5\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Drawer belt Replacement on Esoteric SACD Player","url":"https://forum.audiogon.com/discussions/drawer-belt-replacement-on-esoteric-sacd-player"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198997-4001\nEdit\nPower unit\nMy current setup.\u00a0 I have a dedicated 20amp circuit going into top of line Furutech wall receptacle.\u00a0 That is plugged into a\u00a0 \u00a0Shunyata Research MPC-12 Power Conditioner (with SSF38 that i purchased used in 2019.\nPlugged into this is my rig.\u00a0 Lumin U1 mini feeding a LTA AERO DAC, feeding a Primaluna evo 300 integrated amp which feeds Golden Ear Triton 1R speakers.\u00a0 \u00a0The amp is plugged directly to wall.\u00a0 Everything else into the Shunyata.\nWhat would be a upgrade to the Shunyata?\u00a0 would like to keep it under 3k ish new or used.\nThanks in Advance\nmlapenta\n07-11-2026  3:55pm\n2 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n07-11-2026 at 04:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCongratulations on having a top rate power delivery system. I don't think it would be beneficial to spend any more money there. It already is probably your strongest component.\nI would recommend looking at the rest of your system. Overall it is strong and well balanced performance wise. So, it would be best to take you time and start at the beginning. Think about taking your system to a new level over time. Each upgrade will be significant... then at the end you get an extra reward for synergy.\nI would begin with the speakers. You would want to bring those up to the next level first. That will likely take at least $6K or more. But I would take your time. Rethink what you want for the next level. Audition major speaker types.\nAlternatively you might get an incremental bump by upgrading your streamer to the next level. I would look into an Aurender or higher end Lumin U2. Long-term look at the U2 purchase as the first step in your next level system as well.\nmlapenta\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n137 posts\n07-11-2026 at 05:34pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks for input.\u00a0 Yes the next logical upgrade would be the streamer.\u00a0 As far as speakers, I love the Triton 1r's due to their powered bass built in, allows for a tube amp to only deal with mid/tweeter.\u00a0 \u00a0My DAC is the brand new LTA AERO and at 4k, it blows away units i've heard for 3 times the cost.\nMore to discover\nFlexible Power Cords\nCLASS A POWER RATINGS\nKrell KSA-200S Power Cable\nMating power cords with APL 3910\nReview: VH Audio Flavor 4 Power cord\nRSX MUSIC SERVER RSX MUSIC SERVER\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAurender N100H\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Power unit","url":"https://forum.audiogon.com/discussions/power-unit"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198903-524\nEdit\nWill Cardas 6mm spades fit current Pass labs amps?\nThe amp is an INT-25 and the factory Furutech binding posts only accept spades thru the bottom (6 o'clock) wondering if current Cardas 6mm spades will fit these posts?\u00a0 The WBT spades on some cables I have now won't fit in there.\u00a0 Would really like spades instead of bananas.\u00a0 Thanks for your help!\npehare\n06-30-2026  5:12pm\n3 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nPost removed\nJun 30, 2026\nspatialking\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n704 posts\n07-04-2026 at 03:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhy not call Pass Labs and ask them? They would probably know!\npehare\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n842 posts\n07-04-2026 at 04:31pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks those who responded.\u00a0 I did email Pass & they said no the spades (6mm or 9mm) won't fit inside the binding post shroud.\u00a0 Let this educate others so they don't make an expen$ive mistake.\u00a0 Bananas it is!\nMore to discover\nWhy the SIVERY spades on new HOLOGRAM?\nDoes the quality of the spades matter\nMy spades are too small for speaker p...\nNAD c370 owners: will the c370 accept...\nsilver spades on copper cables?\nBricasti M5\nRSX MUSIC SERVER RSX MUSIC SERVER\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Will Cardas 6mm spades fit current Pass labs amps?","url":"https://forum.audiogon.com/discussions/will-cardas-6mm-spades-fit-current-pass-labs-amps"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197428-1294\nEdit\nMy Dead Linear Power Supply\nMy Uptone Audio Ultra Cap LPS1 died on me. It was powering my Uptone Audio ISO Regen. I contacted Uptone Audio and they cannot replace or repair the LPS1 but cited me a price for the Teddy Pardo mini LPS at $385.00 - 6% which is preferable to cheaper units because of its low output impedance. According to Alex Crespi \"Due to the bursty high frequency nature of how digital devices draw current, ultra low output impedance is actually more important than ultra-low-noise from a DC supply. The inexpensive Chinese LPS units found on Ali Express or eBay have big bumps in their output impedance curve at low frequency (yes I know its an odd concept to think of DC in relation to frequency).\nMy DAC is a good sounding DAC without the ISO Regen but I still enjoy using it so I'm wondering whether there might be a more affordable antidote to my dilemma? I have been using the ISO Regen without an LPS and it does offer a sonic signature that I like but I have heard noise through my tube headphone amplifier.\nAny advice or insight would be appreciated.\nThanks!\ngoofyfoot\n02-03-2026 12:15am\n11 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ngoofyfoot\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,608 posts\n02-03-2026 at 12:54am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI supposed it worth mentioning that I ran my ISO Regen with;\n115W AC 7v 2 amps DC\nI'm using a Bryston BDP 3 renderer to an Ayre QB9 Twenty DAC via USB\njjss49\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,943 posts\n02-03-2026 at 04:49am\nCopy Comment URL\nReport Comment\nEdit\nDelete\ntry an ifi elite 7v unit\ngoofyfoot\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,608 posts\n02-03-2026 at 05:18am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@jjss49\nThey don't make anything between 6 & 8 volts.\njjss49\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,943 posts\n02-03-2026 at 06:24am\nCopy Comment URL\nReport Comment\nEdit\nDelete\noops - ok never mind\ngoofyfoot\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,608 posts\n02-03-2026 at 07:36am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@jjss49\nThanks for your input!\nwsrrsw\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,511 posts\n02-04-2026 at 01:41am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAlex Crespi knows his stuff.\ngoofyfoot\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,608 posts\n02-04-2026 at 02:04am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@wsrrsw\nHe does but I still don't want to pay $400.00 for a $350.00 device.\nwsrrsw\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,511 posts\n02-04-2026 at 03:54pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@goofyfoot\nHere yah go\nSmall Green Computer LPS\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n02-04-2026 at 03:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nLinear power supplies are easy to repair.\u00a0 take it to any repair shop.\nspatialking\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n704 posts\n07-03-2026 at 05:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAny low impedance linear PS that outputs 7V and 2A or more will work.\u00a0 If in doubt, opt for more current capacity.\u00a0 In general, the higher the current capacity, the lower the output impedance.\u00a0 Look for a surge current spec, if one is specified.\nI agree most linear supplies are easy to repair but by the time you pay a tech and pay for parts, it might be less expensive to just replace it.\u00a0 Sadly, this is the case with high volume manufacturing. I've tossed a couple of linears simply because it wasn't worth my time to fix it.\nYou can get a switching supply instead if a linear, as they are inexpensive compared to linears, especially for higher currents.\u00a0 But, the trade off is a much noisier supply.\u00a0 In this case, it's up to the PSRR spec of the DAC to keep the noise from bugging up the sound.\nThe very best supplies use a switching PS followed by a linear PS that only drops 0.1 Vdc.\u00a0 The linear is there to just kill the SMPS noise. It's a safe bet that any company that went through that much work will have a good quality supply.\ngoofyfoot\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,608 posts\n07-03-2026 at 06:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@spatialking\nThank you for your insightful response. I did take the LPS to my local repair shop but they said there are to many micro parts that they\u2019re unable to replace. Anyway, I\u2019ve been using the unit while plugged directly into my line conditioner and I really can\u2019t hear any noticeable difference. I have a good DAC so I\u2019m thinking that I\u2019m good, at least for now.\nMore to discover\nSpectral MH750 Ultralinear ll  or  MIT\nPreamp shootout: Linear tube audio, M...\nRedbook vs. SACD vs. Linear PCM 24 bi...\nLinear Tube Audio- Micro Z-OTL  Pream...\nLinear Power Supply\nFocal 36 MONTH FINANCING\nAurender N10\nVandersteen Model 2c ii signature\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"My Dead Linear Power Supply","url":"https://forum.audiogon.com/discussions/my-dead-linear-power-supply"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198462-186220\nEdit\nDo Fuses make a difference ib sound?\nDo fuses make a difference in the sound?\nchiefsteward1\n05-17-2026  4:46pm\n47 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ngkelly\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,124 posts\n05-17-2026 at 08:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019m waiting for my equipment to go out of warranty. I think I still have a couple years yet to find out.\nxmbw4\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n38 posts\n05-18-2026 at 01:05am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThings like that, you have to try them in your system. Call The Cable Company. They specialize in keeping demo units of everything they sell. They'll send you 4 or 5 different ones, and you can keep them for 2 weeks. If they make a difference you think is worth paying for, buy them. If not, send them back and keep your money.\nspenav\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n557 posts\n05-18-2026 at 02:40am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@xmbw4\nadvice is wise. I have some in my system (Synergistic Research) and the difference is subtle. Better? Not sure. There are definitely better places like acoustic panels to spend that money on.\nsecretguy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,000 posts\n05-18-2026 at 02:44am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nlcherepkai\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n311 posts\n05-18-2026 at 04:30am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'm going to answer your question from the other side as I have not experimented with audiophile fuses.\u00a0 I had been researching the topic when I came across posts, here, about slugs, rods of solid metal, in place of fuses and I went down that avenue because I could just see me losing my s$!t if I blew up a fuse that had I paid hundreds of dollars for.\nNow, I've posted about my findings several times and received a lot of pushback regarding the dangers of doing this.\u00a0 I'm fine with the risk and find the benefits quite substantial, on the level of a significant component upgrade.\u00a0 I use slugs in a Bel Canto DAC 2.8, Bel Canto CD-3t transport, and a pair of Red Dragon S-500 in vertical biamp (not bridged) and can't imagine going back to an obviously less detailed sound with a loss of precision in image specificity and depth.\u00a0 Tonally, the slugs can be a good thing or can cause some damage.\u00a0 I've experimented with several different metals, all clearly having their own sound.\u00a0 It's actually pretty shocking just how BAD the stock fuses sound.\nantigrunge2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,586 posts\n05-18-2026 at 06:06am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDefinitely yes. They are also directional. Just turn yours 180 degrees and see whether you can tell the difference. If you can try the Digital Fuse Box,\nPotentially burning the house down as another poster seems to recommend seems to me a matter of personal preference, though\ntrivema\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n178 posts\n05-18-2026 at 12:29pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI swapped out a bunch of fuses in amp, preamp, streamer, DAC and DDC in main rig which is pretty resolving. \u00a0I couldn\u2019t tell much of a difference, if any.\nhilde45\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,101 posts\n05-18-2026 at 12:38pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt will be hard to test in a way that keeps you \"blind\" to the outcome. So, it will come down to your own ability to distance your perception from your preconceptions and desires. Good luck!\ndr-hooves\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n64 posts\n05-18-2026 at 01:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI take it that the fuses in question are 5x20 internal or 6x32. Not UK 6x25 plug fuse.\nFuses adapt over time to a device and work more OK when the difference between them and the board they are in is complimentary.\nThis means that a good deal of fuse are a waste of time. Also many fuse are not slow blow, so one should be considerate there.\nTo change and get an improvement I would recommend Aucharm (not slow blow) or Isoclean (either), I am fully impressed with Isoclean 10A and Aucharm other values. I ran tests on phonosophie and Synergistic Red over 10 years (just keeping an eye on them), and they failed my test of worth significantly.\nI build power Cables for people in the UK, so we have them built into our Mains Plugs. Which is an absolute enemy.\nwillow7\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n19 posts\n05-18-2026 at 01:49pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMain power fuses inside the component\ninfluence sound quality, and just like power cables - it depends. HiFI tuning fuses from Germany for around $100 is a safe bet (they are directional too). After running them for a week or two put the old fuse back in to gauge difference. I noticed positive change in Eversolo DMP A10 streamer/DAC, some improvement in PL integrated tube amp.\nthaluza\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n306 posts\n05-18-2026 at 01:49pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf one has monoblock amplifiers, it would be easy to conduct an experiment. Just put an aftermarket fuse in one amp and leave the stock fuse in the other amp. You should hear a change in how the soundstage and imaging are presented from the side that has the aftermarket fuse. For me, it was subtle but audible.\nmggartner\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n40 posts\n05-18-2026 at 01:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI would never put anything in a device other than a fuse of the recommended type. Aside from possible damage to the device, there\u2019s also the risk of fire. I would really lose my s$!t if I burned the house down!\njhnnrrs\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n148 posts\n05-18-2026 at 02:02pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nUnequivocally no.\u00a0 They don't make a difference.\u00a0 Sleaze bags like Synergistic Research counts on you believing his word salad and thinking you hear something that is NOT there.\nlivingwellinco\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n29 posts\n05-18-2026 at 02:13pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI use the slugs also and my mono blocks are protected with a digital (electronic) breaker. I noticed a good change. The breaker on one was tripped and protected the amp as it should and resets itself. Highly recommended.\njimmyblues1959\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n238 posts\n05-18-2026 at 02:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@mggartner +1\ndogearedaudio\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n299 posts\n05-18-2026 at 02:43pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOne audiophile friend swears by them. \u00a0Another couldn't be bothered. \u00a0I've tried them but can't hear enough of a difference to keep spending money on them. \u00a0Generally speaking, when I hear a tweak that really makes a difference, it stays in the system. \u00a0If not I save my money for something that offers a discernible improvement.\nxmbw4\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n38 posts\n05-18-2026 at 03:41pm\nCopy Comment URL\nReport Comment\nE","title":"Do Fuses make a difference ib sound?","url":"https://forum.audiogon.com/discussions/do-fuses-make-a-difference-ib-sound"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198581-224809\nEdit\nEnter the modern hifi world. Try this test.\nHiBy FC1 vs. just about any modern or vintage DAC out there.\nCost? Just around 20 dollars or so.\nI doubt anyone will be able to tell a difference with their system.\nLet\u2019s assume\u00a0 the following case scenario:\n1. same speakers\n2. same cables\n3. same amplifier\nThe test:\nUse a 3.5mm cable to RCA or balanced in to your preamplifier or integrated amplifier on a spare input.\nbasically, it\u2019s 2v plus a little extra mw, designed to drive headphones.\nIf anything it\u2019ll be a bit louder than your system, but fundamentally, you won\u2019t be able to hear any difference between it and any solid-state DAC out there in terms of resolution, detail, timing, or instruments/vocals clarity.\nWhy? Because digital audio has advanced to the point where we are at its limits, and can shrink down the electronics this small, without sacrificing anything. Just look at how far computers and smartphones have come. Audio reproduction is no different in the digital domain.\nfrank009\n05-29-2026  4:07pm\nNext \u203a\nLast \u00bb\n162 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nfastfreight\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,326 posts\n05-29-2026 at 04:10pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nfrank009\nDetails\nDiscussions\nPosts\nThis discussion\n311 posts\n05-29-2026 at 04:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAfter downloading the Hiby app on you smartphone, and of course once you have it plugged in, these are the settings you need to toggle on:\nSee the photo. Exclusive USB audio access and UAT connection mode = connection quality. This eliminates jitter entirely; something that common USB DACs with (software, FPGAs etc.) drivers cannot do, because they are working around a problem, rather than eliminating it in the first place. This is the point where even high end digital cables stop making a difference.\nHiBy FC1 2024 Version\nIf a configuration or DAC set up revolves around a set of compromises anyway, and a set of variables need to be there in place to circumvent those weak links, then you can expect digital cables to make a difference. Everything you need to experience digital audio is contained inside this unit. I have tried numerous DACs over the years and found them to do more to \"color the sound\" but this one morphs with the music, allows me to hear details I\u2019ve never heard before. That\u2019s why I\u2019m posting about it.\nI said it would sound the same to see if audiophiles like me would react to it. But I guess not.\nIt sounds BETTER, not the same vs. older vintage DACs, and many high end modern DACs. It's ultra-transparent and the sound is so clear, it's like looking through a polished window from the inside. Enough so the birds would fly into it!\nknock1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n387 posts\n05-29-2026 at 05:45pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhatever you are smoking, enjoy it!\nfrank009\nDetails\nDiscussions\nPosts\nThis discussion\n311 posts\n05-29-2026 at 05:48pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@knock1\nI don\u2019t smoke anything. I don\u2019t even drink alcohol.\nSo with that said, either be game for a challenge, or ignore what I\u2019ve written and move on. Maybe you'll wonder if I was right all along.\nkirkwallace\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n474 posts\n05-29-2026 at 07:25pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDoes the cable have to be 3.5m? Can\u2019t be shorter?\nfrank009\nDetails\nDiscussions\nPosts\nThis discussion\n311 posts\n05-29-2026 at 07:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@kirkwalllace\nYou need it because it plugs in to the Hiby FC1\u2019s output. The RCAs go to an input on your preamplifier or integrated amplifier.\nAfter 6m or 20 feet, the sound quality will degrade. So make sure it's not over 20 feet long.\n3.5mm to RCA.\nIt looks like this:\nknock1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n387 posts\n05-29-2026 at 08:05pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI will not ignore what you are writing. I am going to stay here for the pure purpose of entertainment from your words of \"wisdom\"\nfrank009\nDetails\nDiscussions\nPosts\nThis discussion\n311 posts\n05-29-2026 at 08:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@knock1\nGood. Stick around.\nmapman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23,710 posts\n05-29-2026 at 10:27pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHmm well I can offer I have this similar looking DAC/amp I use with headphones all the time and it is very good.\nTempotec DAC\nVery clean dynamic and detailed.\nI can compare to Chord Mojo which was an audiophile best seller and cost much more. \u00a0Mojo sound is warmer and some might say smoother.\nWhich is better? \u00a0Not going to say other than I use the Tempotec all the time these days and the Chord is essentially a spare.\nDifferent strokes but no doubt a good quality DAC need not cost a lot these days.\nkirkwallace\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n474 posts\n05-29-2026 at 10:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@frank009\ni mis-read your first measurement; you were talking about the connector diameter being 3.5 millimeters; I mistakenly thought you were saying one needed a connector cable that was specifically 3.5 meters. \u00a0So, to answer my question, presumably a 0.5m, 1m or 1.5mm cable would be fine for conducting this test.\nPost removed\nMay 30, 2026\nzlone\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,431 posts\n05-30-2026 at 12:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHave you had a chance to directly compare it with another DAC? What did you use?\ncuriousjim\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,165 posts\n05-30-2026 at 04:05pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhy spend $20 for a DAC when you can get one for $9.99? \u00a0Save your money , after all, they all sound the same. Right?\nParty on Garth.\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n05-30-2026 at 04:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'll never understand why so many do not post links and/or photos of the equipment\nhttps://store.hiby.com/products/hiby-fc1-2024-version\n////////////////////////////////////\nmini jack to RCA:\nI used that from my PC, headphone out, to my office preamp rca in.\nLearned here, changed to USB OUT to inexpensive $100. Topping DAC rca out to rca in: the sound was far superior\ntherefore, I'm skeptical, but as OP says, it's darn easy to try and learn something.\nmark200mph\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n909 posts\n05-30-2026 at 04:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'm back to the square wheels and flat earth as I like the bounching.its great to experiment it's the only way we'll find out for myself I like a good challenge keep it up enjoy the music.\nshooter41\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n150 posts\n05-30-2026 at 04:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI also use a very similar DAC/amp dongle but strictly for use on my ipad to headphone connection that I only use when in bed next to my sleeping wife. It did indeed improve the sound pretty remarkably, to the point that I sometimes wonder \"why do I even need that expensive \"proper\" headphone rig?\" Then I go lis","title":"Enter the modern hifi world. Try this test.","url":"https://forum.audiogon.com/discussions/enter-the-modern-hifi-world-try-this-test"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198850-185452\nEdit\nFull Range Driver Recommendations Wanted\nIm building a pair of folded horn speakers called the Lii Headwreckers. The design was done by Steve Deckert for Lii song.\u00a0 Steve builds these for the US market and also sells the plans which I bought. Steve and Lii Song use the Lii Song PT-10 full range 10\" drivers. According to reviews and Steve himself, these drivers can be fatigueing. He actually sells an optional magnetic crossover for this reason but that's an additional 1k in addition to the $2200 drivers. Id like to put a driver in that doesn't need additional components to tame the brightness.\u00a0 Any DYIers out there that can recomend a good 10\" full range driver?\nsandrodg73\n06-23-2026  4:57pm\n5 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nbruce19\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n387 posts\n06-23-2026 at 05:50pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019m not sure why you would want to go to the trouble of building an elaborate enclosure like that and then not install the driver that it was designed for. Not to throw a monkey wrench in your plan but Wodan Designs offers plans for a full range of speakers based on Mark audio drivers. They are both straight and folded Voight pipe designs, using full range drivers without crossovers. The Mark audio drivers seem to be well respected and reasonably priced. I just built the smallest of these speakers with a 3 inch Mark audio Al pair 5.3. If you thought anything was going to be harsh, it would be a 3 inch speaker, but I have not found it to be the case once it was broken in, it is really quite good. I think I may make the lead to building a larger speaker with a larger driver in the future.\nPost removed\nJun 23, 2026\nsandrodg73\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n163 posts\n06-23-2026 at 07:14pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks Bruce.\u00a0 Ill look into your suggestions.\u00a0 The Headwreckers were a bit ambitious for my woodworking skills and tools but taking my time and buying a few tools and clamps and they v are coming along nicely. I guess im hesitant to put a driver in that cost that much. Nice thing about this design is drivers can be swapped out pretty easily.\u00a0 Guess im looking for opinions on well made full range drivers that measure well. Ill check out mark audio.\u00a0 Thanks again\naudioman58\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,646 posts\n06-24-2026 at 11:47am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf you are going through all that trouble then invest in a good field coil\nin Germany big deiver and inner coaxial type Radu Tarta builds Great power supplies for them and sound exceptional. Better then Voxativ when completed\nfield coils are truly better in every respect but more $$ !!\ntimlub\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,057 posts\n06-24-2026 at 12:43pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'm not really a DIY'er, but I do have a speaker upgrade company. Most full range drivers benefit from some minor compensation. My guess is without measuring these is that they could use baffle step compensation. That one circuit could make these very nice sounding. Good Luck, Tim\nMore to discover\nRecommendations for used/vintage inte...\nrecommendations of phono preamps  &lt...\nI am looking for results &amp; recomm...\ncartridge recommendations: SL1200 mk2\nQuiet Tube Preamp Recommendations sub...\nAntipodes Audio K40\nAyon Audio S-10IIxs\nVandersteen Model 2c ii signature\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Full Range Driver Recommendations Wanted","url":"https://forum.audiogon.com/discussions/full-range-driver-recommendations-wanted"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194819-161753\nEdit\nRobert Harley's Home Reference System\nI just finished viewing the video where Robert Harley walks you through the reference system he has in his home listening room.\nhttps://www.youtube.com/watch?v=ykNrHac1Zbo\nThis is the follow up to the excellent video he did on the building of his home listening room.\nhttps://www.youtube.com/watch?v=OtUcfiaN6CY\nI found that one so fascinating, that I incorporated many of the ideas in the new listening room I\u2019m just completing in my own home.\u00a0 A much more modest endeavor to be sure, and I plan to do a detailed post to that project in the near future.\nIf you haven\u2019t seen these two videos, take the time to watch them.\u00a0 Even if they will never be part of your home environment, they are still very interesting.\u00a0 IMHO\nbigtwin\n06-16-2025  1:54am\n6 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nmihorn\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n915 posts\n06-17-2025 at 12:00am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNice home. Nice equipment. Nice presentation with great voice (nice microphone). Where is the audio sound? I don't get it.\nhilde45\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,101 posts\n06-17-2025 at 06:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhere is the audio sound? I don't get it.\nIsn't that like asking for a taste of the food prepared on a TV cooking show?\nceltic66\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,974 posts\n06-20-2025 at 03:35am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThank you for providing. \u00a0Only my humble opinion. \u00a0The F4 Phantom jet has such strange angles to correct stability anomalies as described by a friend (aeronautical engineer Boeing). \u00a0Everything a correction of flawed initial design.\nI submit a trapezoid shaped room with rising ceiling, front and back walls red brick would negate the need for a lot of this room treatment. \u00a0And, if you really want to get crazy, put it all subterranean to eliminate external intrusive sound.\nObviously, I\u2019ve not heard this room, so could be quite wrong.\npriaptor\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1 posts\n06-21-2026 at 04:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have a different take.\u00a0 I watch this, wonder how much of an \"industry accommodation\" has received, which like all these \"industry accommodations\" to an inbred industry, where those LIKE Harley never bear any cost of upgrades or replacements, then gets passed down to saps like me, they prototypical end-user.\nI am done with this inbred model.\u00a0 Let me know when manufacturers care about the end-user and then, maybe I will be back .\nparkergetdean\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,199 posts\n06-21-2026 at 06:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nwhat kind of car does he drive?\nyogiboy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,232 posts\n06-22-2026 at 12:18am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBob drives a 1988 Yugo GV!\nMore to discover\nRecent Evaluation of the Home Audio S...\nBurning cd's for my modestly high-end...\nTT and phono preamp - what best match...\nAdvise on 7.1 Channel Surround System...\nSystem building; a meditation\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nAurender N100H\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Robert Harley&#39;s Home Reference System","url":"https://forum.audiogon.com/discussions/robert-harley-s-home-reference-system"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198686-176911\nEdit\nTo Equalize or Not to Equalize\nI would love to get some advice from this forum;\u00a0 My Issue is that I find some music to be coming across kind of bright/harsh, especially as I get to higher volumes (say above 90db).\u00a0 My system and room is now static and not in play for change.\u00a0 I was wondering if anyone has advice on the effectiveness of an equalizer, and do you have any recommendations.\u00a0 Price could be up to $1-2K\nThanks All\ncathat\n06-11-2026  3:52pm\nNext \u203a\nLast \u00bb\n59 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\njl35\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,489 posts\n06-11-2026 at 04:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTop of the line Schiit Equalizer. Loki Max F. $1599\ncathat\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n11 posts\n06-11-2026 at 04:10pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks - have you used this model, or know anyone who has?\u00a0 I know they have a good rep. but don't know anyone who has used their gear.\njastralfu\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n575 posts\n06-11-2026 at 04:19pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFolks seem to like the Schitt Loki which is in that price range. \u00a0I have a five channel equalizer on my integrated that I use and I like having it. \u00a0My room is well treated so when I use it it\u2019s to accommodate the recording and not room issues.\ngdaddy1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n549 posts\n06-11-2026 at 05:10pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf you're a streamer using Qobuz or Tidal you can use a program like Audirvana that has many features including a 10 band EQ which is excellent.\ndtorc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n132 posts\n06-11-2026 at 06:49pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDSpeaker has a few options to control things in the digital realm. There is the Anti-Mode 2.0, and the more sophisticated (and expensive) X4. I've used both for years at a time, and found them both helpful They each have a \"Tilt\" control, not unlike the old Quad preamp, that allows you to quickly dial the treble down, or the bass, or both. For some recordings, it was just what the doctor ordered. And they do wonders for the bass in most rooms.\nIf you want to keep it analog, I'd experiment with the fanciest Loki. Schiit gives you two weeks to try it out. By then, you'll know...\nDavid\nfrank009\nDetails\nDiscussions\nPosts\nThis discussion\n311 posts\n06-11-2026 at 07:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nUse the HiBy music app to fine tune the sound to your liking.\ncuriousjim\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,165 posts\n06-11-2026 at 08:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@gdaddy1\nAlso a bit of double checking your room and setup can make amazing differences. For example, my listening room is also thee family room and there\u2019s a 10\u2019 opening into the living room. \u00a0For just a few dollars I bought one of those cheap woven bamboo room dividers. \u00a0I tossed a nice looking Quilt over it and it made a very noticeable improvement and it can be quickly moved away when company comes.\nacrespo\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n11 posts\n06-11-2026 at 08:12pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt\u2019s a no brainer: Schiit Loki Max F with the Forkbeard, 1600$, balanced and unbalanced inputs and outputs, a bypass mode and a great remote control app\ncathat\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n11 posts\n06-11-2026 at 09:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI should have mentioned that I listen to CD, Vinyl, and some streaming - in that order of frequency (no pun intended).\u00a0 Sorry about that.\u00a0 So an app or program wouldn't be a complete solution.\u00a0 I am seeking a hardware solution.\nLooks like some piece of Schiit gear (another obvious and well worn pun) is a consensus so far.\u00a0 I didn't know they had a trial period.\nI think I'll head back to their website.\nI had an ADC equalizer way back in 1980-ish.\u00a0 I don't recall how effective it was but then again it was in a pretty low end system.\u00a0 I'm hoping that the gear available today is better and more suited to the job at hand.\ncathat\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n11 posts\n06-11-2026 at 09:34pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@curiousjim\n- your right, the room is the biggest influence.\u00a0 I have pretty much done what I can there.\u00a0 It's a small-ish basement room but I get it all to myself - the wife never comes down to listen, she just calls when it gets too loud ;-).\nI have a big thick rug, heavy window treatments, and there are only a few pieces of furniture.\u00a0 Most of the wall space is for CD's and Vinyl storage.\ndynacohum\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n854 posts\n06-11-2026 at 09:45pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have a Schiit Lokius, which is the non motorized version, and use it sparingly to dial in a loudness contour for normal low volume listening. I wouldn\u2019t like to be without it. It doesn\u2019t seem to detract from the system\u2019s transparency, which would be a deal breaker if it did\u2026but it don\u2019t!\nPost removed\nJun 11, 2026\nsfgak\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n212 posts\n06-11-2026 at 11:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have the Loki Max (pre forkbeard model) and love it. Between the defeat switch and the 3 presets, I can get to a Fletcher Munson curve approximation for most every listening volume.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n06-11-2026 at 11:30pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'm not ANTI-EQ, at all, especially when used in the sub woofer.\u00a0 However, this sounds more like your room is too reflective.\u00a0 This is a level dependent phenomenon we cover in A'gon like, monthly.\u00a0 things sound find but some recordings start to sound harsh if not distorted at higher levels.\nThe reason is usually that the room is too bright.\u00a0 If you can experiment with this for free I encourage you to.\u00a0 Put some absorbers up along the walls and you'll notice the harshness goes away AND your speakers will sound bigger than they used to.\ndwatson1612\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1 posts\n06-12-2026 at 12:13am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBright or harsh could be at several different frequencies. I have Klark-Teknik 31 band equalizer in my system. I think it is DN360 or DN370. It is a studio equalizer. It sounds amazing. If you do not have xlr, you can get some nice xlr to rca at Moon Audio.\nYou can download Spectroid app on your phone and quickly see where the nasty frequencies are. Good luck.\nroadcykler\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n360 posts\n06-12-2026 at 03:14am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThrowing in my vote for the Loki Max F.\nglcanon\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6 posts\n06-12-2026 at 03:33am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have a Schiit LOKIUS 6-band EQ, signal coming from a LAIV Harmony DAC then out to an Emotiva pre-amp to an Advance Paris power amp. \u00a0You can flip a single switch and turn the Schiit\u2019s EQ off to A/B test your results. I\u2019ve found my Buchardt E50s need just a touc","title":"To Equalize or Not to Equalize","url":"https://forum.audiogon.com/discussions/to-equalize-or-not-to-equalize"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n1367812115\nEdit\nWhat is a really good sounding low volume system??\nI'm trying to gear up for when I get married this september and move in with my fiance into her place. Living quarters will be cramped and we will share a wall and floor (thier ceiling) with the home owners. Headphones don't sound like fun but perhaps I'll have to bite the bullet and buy some hd 800's or something. I suppose my other option is to build a \"second\" system that really excels and sounds good at low low volumes. Nearfield listening? I've thought about just adding a nice pair of bookshelf speakers to my current front end, something that lacks bass but excels in micro detail and imaging at low volumes. I guess I could set up a secondary nearfield listening station but don't know where to start. There is a prima luna pl2 integrated amp for sale locally and I'm wondering if this int. paired with a bookshelf speaker that has great detail and imaging might work for me.\nWhat do you guys think??\nb_limo\n05-06-2013  3:48am\n43 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nseikosha\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n220 posts\n05-06-2013 at 01:47pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI think you definitely are going to have to look to bookshelf designs with smaller drivers and less bass to minimize any sound intrusions upon the neighbors. Something I've learned is that the less air that is being pushed correlates to less potential to irritate the neighbors and this may or may not be consistent with specified low frequency bass response.\nOne thing I've noticed is that with a good quality tube amp and high efficiency speakers, you can really get away with listening with less volume than traditional setups. Hard to explain but you just get so much detail at lower levels that you won't have a need to turn it up.\nLast suggestion, two speakers that I have that work well at lower volumes are the Silverline Minuets and then at a higher price range, the little Harbeth P3ESR but I'm sure there are many others out there that folks will recommend.\nGood luck!\ntgrisham\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,291 posts\n05-06-2013 at 01:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFirst, congratulations and second, sorry you have to make these adjustments. I think you will have to have headphones. I have an apartment that I use frequently which is close to work and volume is restricted. Only headphones will give you the dynamics you need. And, you will keep the system for a long time no matter where you live. For temporary near field listening, I saygo cheap. Bookshelf monitors with wide dispersion and tube amplification. Buy used so you can sell it back and break even. Sennheiser HD 800s are fantastic but so are the 600s. Tube headphone amplifier from Woo or Schiit. Upgrade Cardas or Moon cable. Active powered speakers from Emotiva or Dynaudio with a tube preamplifier. Cables from mono price or Bluejeans. Good luck.\nrrog\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,958 posts\n05-06-2013 at 02:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt was nice knowing you. Good luck with your marriage. I will do some research for you on power cords for your new Bose radio.\nbuconero117\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,311 posts\n05-06-2013 at 02:31pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy advice on audio and newly married is just say no. No to audio, that is. From your comments it is suggested that you have not had a heart to heart audio talk with your bride to be. Does she know you have this addiction? Apparently not, given all the work arounds you describe. If this addiction is not fully disclosed before your marriage, it will create serious problems. Failure to involve her from the outset in your need for audio will be a big mistake. You must tell this women that she will be required to live in an 'audio world', for better or worst. Do it quickly before the expense of a wedding takes hold.\nrar1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,892 posts\n05-06-2013 at 02:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI use a PL2 with Ascend Acoustic Sierra Monitors. Sounds very good at low volumes. Rega RS1 are good speakers at low volumes, as well. You will get quality sound, just not all the audio niceties.\nI am president of my coop with a spouse who can hear mice peeing on wool, so I do not play my music at anything more than low volumes, with the occasional foray to mid level volumes on a weekday afternoon when no one is at home.\nSave your cash for a bigger place. Don't place your electronics on the common wall, that is common courtesy.\nRich\nmarakanetz\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,473 posts\n05-06-2013 at 03:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'll use headphones and some cheap PC sound system. You can also get Samson active studio monitors specifically designed for the low-volume music. My headphone choice is Beyerdynamic T70 will have no compromise to HD800 for a fraction of price.\nlarryi\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,674 posts\n05-06-2013 at 04:19pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nUnfortunately, the best sounding systems at low volume are horn systems that are also physically big in size so they create other placement problems. There are other somewhat bass restricted higher efficiency systems that also sound pretty good at lower volume.\nDipole speakers are also great for keeping sound levels down outside of the primary listening area. Such speakers, like quad electorstatics, tend to focus sound within the listening area they are aimed at, so that there is MUCH less sound spilling outside of the listening area (the out of phase front and back signal cancel at the sides, large panels tend to have less fall off of soundlevel with distance than speakers that are closer to being point sources).\nI have owned large panel electrostatics (Martin Logan) so I can personally say that they are much better than conventional dynamics in reducing the amount of sound outside of the listening area.\nnonoise\nDetails\nDiscussions\nPosts\nThis discussion\n11,226 posts\n05-06-2013 at 05:46pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOnce you spend some time listening at lower volumes, you'll be surprised at how soon you adjust to it. I've had (and still do) some time off due to an injury and I now listen at lower levels than I thought possible and still get the satisfaction.\nYou won't be able to tell what is missing or lacking until your hearing adjusts so do the waiting and critical listening before you change out anything. It should only take a couple of weeks before you narrow down your search for that \"right\" component.\nMy first take on what would be necessary is to seek out (if you don't have one already) a high efficiency speaker that doesn't take much to \"come on strong\". That would lead to a smaller (less powerful) amp which generally sound better than the big brutes out there.\nYou have a long, quiet road ahead of you. Enjoy,\nAll the best,\nNonoise\nroscoeiii\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,155 posts\n05-06-2013 at 06:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPanel speakers is a good suggestion, and","title":"What is a really good sounding low volume system??","url":"https://forum.audiogon.com/discussions/what-is-a-really-good-sounding-low-volume-system"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198705-178\nEdit\nAltec N1500A crossover rebuild\nI'm looking for someone to build a clone of (or rebuild) my N1500A crossovers for my Altec 604E speakers.\u00a0 Anybody know someone or know where I should start my search?\u00a0 TIA\nkublakhan\n06-13-2026 11:58pm\n14 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nted_b\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n96 posts\n06-14-2026 at 02:42am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI've constructed new crossovers from scratch, but I'm not familiar with this one. I did find a\nN1500A crossover schematic\nin the Lansing Heritage forums. That would be a good place to inquire, as you'll likely find those who are familiar with it. There are only (5) components in this crossover, so it's simple and shouldn't be a big job.\nwhart\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,406 posts\n06-14-2026 at 04:17am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI know somebody that worked at Altec for a long time, very capable guy who does build gear for himself, not sure if he\u2019d do it for money but he might be able to point you in the right direction. If you want me to reach out to him, happy to do so. I'm not in this for the money at this point. You can find me pretty easily on the Net.\nbill\ndekay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,249 posts\n06-14-2026 at 12:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHi Dennis:\nIf you consider branching away from stock here\u2019s an interesting read...\nhttps://hifihaven.org/index.php?threads/taming-the-giant-refinement-of-the-altec-604e-n1500-crossover.14698/\nDeKay\nmashif\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n505 posts\n06-14-2026 at 03:36pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nhttps://www.humblehomemadehifi.com/crossover.html\nI found this.\nkublakhan\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n722 posts\n06-14-2026 at 07:19pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDeKay!\u00a0 Nice to see you're still kicking around on here.\u00a0 I was out of the game for a long time but somehow I'm back in it.\u00a0 It's been so long I don't know how to comment directly to people on my thread.\u00a0 Still in LA?\u00a0 Thanks for the link.\nkublakhan\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n722 posts\n06-14-2026 at 07:22pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMashif, thanks for that!\ndekay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,249 posts\n06-14-2026 at 10:57pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYes, still @ the WHD \"Compound\".\nIf you click on my moniker above this post you may be able to use the Message User link, or not (things have changed).\nLikewise - happy to see you/in print - Chloe says Hi.\nInteresting speakers - not unlike the 15\" Stephens Trusonic's my father used when I was a kid.\nDeKay\ncuriousjim\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,165 posts\n06-14-2026 at 11:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@kublakhan\nAnother vote for calling Altec and seeing what they have to say. Who knows, they might have a pair sitting on a shelf somewhere.\nAll the best.\ndekay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,249 posts\n06-16-2026 at 07:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nForgot to ask what cab's do you have?\nAlso wondering if Great Plains Acoustics is still in business as aside from stock there was a custom crossover guy who used to post there.\nDeKay\nkublakhan\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n722 posts\n06-16-2026 at 08:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBig Red cabinets from Mastering Labs\ndekay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,249 posts\n06-18-2026 at 06:25pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSorry, no source for a rebuild - just some pessimistic things to confirm.\nYou have Mastering Labs cab's without the ML crossover and with the stock Altec N1500A's?\n604E's came in both 8 and 16 ohm versions, so I would check that out if you do not already have the info.\nI would also check the compression driver membranes to see what's in there.\nThe old Altec drivers drive me crazy (a bit) as there were quite a few variations as well as rebuilds not using original spec parts.\nI've never seen or heard Big Reds, just 604's in other cab's including the ugly Gray ones with handles on the sides.\nHave you joined the Altec User's Board?\nhttps://www.hostboard.com/forums/forumdisplay.php?f=700\nDeKay\ntoddalin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n708 posts\n06-18-2026 at 08:30pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSuper Big Reds in furniture-grade cabinets, tri-amped (Marantz 1180DC for pre-amp and horns, Marantz 170DC s\u00a0 for the 15\"s) with one-off electronic crossover and eq units for the horns.\nhttps://youtu.be/iGa9259pz-I\nhttps://youtu.be/jsPePauUaLo\nhttps://youtu.be/4MWmYYV1bg4\ntoddalin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n708 posts\n06-19-2026 at 05:31pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n\"Big Red cabinets from Mastering Labs\"\nActually Mastering Labs made the crossovers, but AudioTechnica made the cabinets and distributed the speakers.\ndekay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,249 posts\n06-20-2026 at 12:34pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDennis:\nYou might ask Bob Crites (the Klipsch crossover guy) if he will do a \"one-off\" for your speakers.\nThey would most likely be outboard, as I doubt that he would be able to re-stuff \u00a0yours - which may be potted even, but \u00a0he certainly has a good rep.\nOnce again you would need to verify the drivers in your speakers (for the chosen crossover to function as designed) as well as choosing the right crossover *design.\n*I looked at various \"online\" crossover schematics for your application and some of the supposedly\nsame\ndidn't jive with one another.\nIt's still not clear (to me) as to if you want the stock 1500A Altec's rebuilt or if you want \u00a0custom units such as those designed by ML's, but this does not affect my\ntake/rant\non it.\nGood luck with the project (sounds like it will be a great setup when completed).\nHere's a link to Crites...\nhttps://critesspeakers.com\nDeKay\nMore to discover\nAltec N1500A crossover rebuild\nAurender N10\nAuralic Aries G2.1\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Altec N1500A crossover rebuild","url":"https://forum.audiogon.com/discussions/altec-n1500a-crossover-rebuild"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198769-80308\nEdit\nMark Levinson 23.5 or 27.5 owners\nI have recently had my ML27.5 repaired, and I'm hearing some distortion most noticeable on female vocals but also soprano sax etc. What I'm also noticing is that after switching the amp off the red LED pilot light dims but does no go out completely and only will if I pull the power cable. The amp stood idle for about 9 years and I can't remember if the LED always behaved that way. Anyone with the same amp able to comment.\ngournard\n06-19-2026  5:41pm\n2 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ngs5556\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,284 posts\n06-20-2026 at 04:46am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe reason the LED stays dimly lit is because AC is leaking into the amp. The most likely reason is that the Rifa R-C snubber cap across the soft start circuit relay has shorted. Those paper Rifas are notorious for failing short (and is a much bigger concern for old Levinson amps than the power supply caps. The amp can catch fire if those Rifa safey caps straddling the hot-neutral or hot-grounds fail). This Rifa snubber is a $5.00 item and is easily replaced.\nThe above is unrelated to the distortion. Usually the first thing I look for when diagnosing an amp with this type of distortion is the current source of the input stage tail. Levinson frequently uses a low cost transistor pair (2N5551 and MPSA14) feedback current limiter. But it could be any other current source in the input and VAS stages. This is is definitely a repair shop visit as a schematic or working exemplar is required.\ngournard\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n42 posts\n06-20-2026 at 06:22am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHey, thanks very much for that. The AC finding a path somewhere did not surprise me, but I did not realise the potential fire hazard.\nI have now got to get that heavy thing out by dismantling the whole stand and back to the repair man 3 hours drive from me.\nMore to discover\nMark Levinson No. 36 DAC,,,NEED HELP\nNew Parasound A21 VS Mark Levinson #23\nMoving from Mark Levinson to Classe\nSetup Phono on Mark Levinson No. 28\nMark Levinson 512 CD Player\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Mark Levinson 23.5 or 27.5 owners","url":"https://forum.audiogon.com/discussions/mark-levinson-23-5-or-27-5-owners-2"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198758-149317\nEdit\nBen Duncan\u2019s Pure Henry\nPure Henry is a capacitor for speaker allignment specificly with tube amps by Ben Duncan. Since British Audio Products demise, it cannot be found anywhere anymore. Does anybody have a source or alternative product?\nantigrunge2\n06-18-2026  1:22am\n1 response\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nantigrunge2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,586 posts\n06-19-2026 at 12:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nApologies, it is actually an inductor\nMore to discover\nStrong recommend: The HiFi Podcast wi...\nIs the HiFi podcast with Darren and D...\nGreat new young female Soul artist-Na...\nBen Duncan\u2019s Pure Henry\nRSX MUSIC SERVER RSX MUSIC SERVER\nAurender N100H\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Ben Duncan\u2019s Pure Henry","url":"https://forum.audiogon.com/discussions/ben-duncan-s-pure-henry"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198624-112139\nEdit\nSeeking a New Power Conditioner\nI am currently using the following components:\u00a0 :\n1,\u00a0 Thor Audio 150 Watt tubed monoblocks\n2. Vandersteen 5A loudspeakers\n3. Weiss Audio Dac 204\n4. Lumin u2 streamer\nI have looked into the following 2 units:\nA- Audioquest Niagra 5000 has 4 high outlets for high current draw items. It has been recommended that since the Vandersteen 5A has two 2ubwoofers built in that the Thor and Vandersteen be plugged into the high draw outlets in the Audioquest.\u00a0 \u00a0My second choice as of now is the Puritan 156 power conditioner.\u00a0 Has anybody heard either of the two compared or alone?\u00a0 Thank you.\nkjl1065\n06-03-2026  3:39pm\n8 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nxmbw4\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n38 posts\n06-04-2026 at 03:53am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBoth are good. I would probably go with the AudioQuest because they have a long history of working with Vandersteen. They co-developed the DBS system used in your speakers. Cable Company is an AQ dealer. I'm sure they can send you a demo to try for a couple of weeks.\nceltic66\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,974 posts\n06-09-2026 at 02:31am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOwn two Puritan Labs 156. \u00a0Spectacular. \u00a0Only thing better is replacing the stock 20A power cord with a Furutech 4.1. \u00a0No, really. \u00a0It's life affirming. \u00a0Have shocked several with that discovery. \u00a0Cannot comment on Niagra. \u00a0Good hunting.\nmarco1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n714 posts\n06-10-2026 at 05:41pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPower cords are definitely part of the equation. \u00a0A good power cord to the distributor is a must as it also is powering all the components plugged into it. \u00a0The better audioquest power cords, if maybe you\u2019ll consider their cords as well are quite stiff so be sure you have plenty of room behind your rack to maneuver the cords. \u00a0As mentioned above I just upgraded the cord to my Niagara 3000 and it was \u201clife affirming\u201d.\nslaw\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n26,979 posts\n06-12-2026 at 03:02pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI own two Puritan PSM156 as well. Nothing but praise from me. They're made to plug your whole system into.\nceltic66\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,974 posts\n06-12-2026 at 10:06pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTuesday, the Puritan Labs PSM 156\nFurutech\nversion arrives. \u00a0Should be interesting as I've the Furutech GTX wall plug with carbon fiber faceplate and that really did make improvement. \u00a0All Futurtech receptacles in the newer version\nshould\nmake further improvements. \u00a0We'll see. \u00a0Fingers crossed. \u00a0I'll report.\nceltic66\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,974 posts\n06-16-2026 at 06:12pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe Puritan Labs 156 Furutech version has arrived replete with great double boxed gash. \u00a0Breathe. \u00a0No physical, mechanical or functional damage noted so far.\nNote, physically taller than my previous Puritan Labs, so the great rearrangement ensued. \u00a0Life riddled with First World problems. \u00a0Preamp relegated to bottom shelf of Quadraspire Reference X stand. \u00a0Furutech top shelf. \u00a0Now all cables \u2018hang\u2019. \u00a0Chunks of kept wood pieces to the rescue as spacers.\nNow everything looks Rube Goldberg. \u00a0Review to follow.\nkennyc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,146 posts\n06-16-2026 at 07:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI just upgraded the cord to my Niagara 3000\nI find it somewhat off-putting that when one invests in a conditioner, they have to spend significantly for a high quality PC.\nkirkwallace\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n474 posts\n06-17-2026 at 03:32am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy PSM 156 came with the \u201cUltimate\u201d PC. I love how floppy that PC is. No problem fitting behind the PSM 156 and no worry about it transmitting vibrations. Not had the Niagara in any of my systems, but the PSM 156 seems to work very well with my Spatial Raven preamp and my Gato PWR-222 monoblocks. (Worked great with my CODA CSiB v2 before that.) (Obviously, those amps, unlike yours, are solid state, but they are both pretty high current.)\nMore to discover\nPower Distribution/Conditioner\nNon-current limiting power conditioners\nUpgrade decision, power conditioner o...\nPower Conditioners to reduce Sibilance\nPower conditioner\nRSX MUSIC SERVER RSX MUSIC SERVER\nBricasti M5\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Seeking a New Power Conditioner","url":"https://forum.audiogon.com/discussions/seeking-a-new-power-conditioner"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198727-524\nEdit\nStreamer/dac direct into Music Reference RM-200?\nDoes anyone know if the input sensitivity of the RM-200 Mk I can be driven by running a DAC/Streamer with internal volume control without a preamp?\u00a0 DAC/streamer is a Aurender A1000.\u00a0 Thanks for any help.\npehare\n06-15-2026  3:37pm\n4 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ntomic601\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n13,758 posts\n06-15-2026 at 04:18pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@clio\nprobably knows and the answer is likely yes, for hints look at output impedance and voltage for any of Roger excellent preamps\u2026 RIP legend and genius\ntomic601\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n13,758 posts\n06-15-2026 at 04:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSearch yielded this\u2026 might be accurate might be applicable to mk 1 also\nInput Impedance:\n15k ohms (single-ended, one leg driven), 30k ohms (balanced)\nInput Sensitivity:\n1.1V for full output\npehare\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n842 posts\n06-15-2026 at 07:30pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks\n@tomic601\nfor the input.\u00a0 Do you still have RM9?\u00a0 I'm anxious to get another MR amp back in my system.\u00a0 Had a RM-10MkII years ago and stupidly sold it.\u00a0 Roger was a treasure - spoke with him on the phone a couple times, RIP.\ntomic601\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n13,758 posts\n06-15-2026 at 08:49pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSadly no - I passed it along to a great friend who PSE amplifiers gave up the ghost\u2026 with the TAD speakers I now get by with a very heavily modified MC240 tube amp. I do often wonder if in my situation / listening habits / modest needs around SPL, that an RM-10 might be the ultimate\u2026.\nmiss Roger too\nMore to discover\nMusic Direct Clearance: Focal, Epos\nStriking a balance between musicality...\nmusic hall cd 25.2 problem\nMMGs flat with Complex Music\nMusical Fidelity A3 .2 Preamp\nRSX MUSIC SERVER RSX MUSIC SERVER\nBricasti M5\nAyon Audio S-10IIxs\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Streamer/dac direct into Music Reference RM-200?","url":"https://forum.audiogon.com/discussions/streamer-dac-direct-into-music-reference-rm-200"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196459-208245\nEdit\nMM to MC - Stunned - Please explain the noise difference...\nI just moved up to an MC cartridge - Ortofon MC X30 and Linn Linto Phono Stage - from some decent Ortofon MM cartridges and a V15 type V.\u00a0 I understand the technical differences to some extent, but I do not understand why my vintage vinyl is so much quieter.\u00a0 I expected the improved details, the massively improved bass, the quiet background.\u00a0 But why do the records sound so much cleaner?\u00a0 Some of the pops, tics, and static seem to still be there, but they are now very far into the background.\nmaam522a\n11-17-2025  3:36pm\n37 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ntablejockey\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,431 posts\n11-17-2025 at 05:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYour new cartridge has a different profile stylus that is reading deeper in the groove of the LP which your others carts stylus profile haven't touched.\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n11-17-2025 at 06:31pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@tablejockey\n+1 as you move up in stylist and table vinyl gets quieter and quieter... it is amazing and great. When the stylist goes deeper in the grooves it can be almost as if it is new vinyl. Then machine cleaning can remove most of the dust and grime and they can keep sounding better and better.\nPost removed\nNov 17, 2025\naudphile1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,284 posts\n11-18-2025 at 04:02am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYes same experience here with Hana ML low output MC. It features microline stylus. Super quiet. Airy and detailed. Playing Metallica\u2019s \u201cMaster of Puppets\u201d first pressing. It\u2019s like listening to a CD. Phono stage is at least as important as the cartridge by the way. Huge impact.\nrichardbrand\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,544 posts\n11-18-2025 at 05:45am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@audphile1\nIt\u2019s like listening to a CD\nWow, that's progress!\naudphile1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,284 posts\n11-18-2025 at 06:20am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@richardbrand\nprogress from what?\nmaam522a\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n203 posts\n11-18-2025 at 04:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@tablejockey\n@ghdprentice\nIt becomes easy to see how people go down the rabbit hole.\u00a0 I have been using a Pro-Ject Carbon Pro and then acquired an old LP12 in an auction.\u00a0 I had the PS re-capped, and the LP12 came with a new Linn Motor, new Linn Tonearm Cable, new springs, new armboard, and I replaced the Linn Basik with a Black Ittok.\u00a0 In the box with all of the other new parts was a Linn Linto phono stage as well.\u00a0 Since it is designed for MC, I decided to take the plunge into MC with the X30.\u00a0 All combined - it changed my listening world.\u00a0 Furthermore it allows me to listen to my original Stones, Beatles, Zep, etc... without cringing at the noise.\u00a0 It\u2019s a good day....\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n11-18-2025 at 04:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019m glad your new cartridge sounds so good and quiet, it must be totally clean, properly aligned and calibrated,\nHowever, it should be said, MM can be equally quiet, sound amazing,\nI suspect something was previously wrong to produce so much noise.\nmaam522a\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n203 posts\n11-18-2025 at 05:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@elliottbnewcombjr\nI had been using am Ortofon Red, Blue, and the pick-it pro which are all (I Believe) Elliptical MM carts.\u00a0 Since I had the Linn Linto (1500) it did not make sense to buy an entry level MC cartridge.\u00a0 The problem then became - you don't want to mount a really good cartridge on a Linn Basik\u00a0 so I found a very nice Black Ittok in Europe.\u00a0 All of those improvements contributed to the change.\nsocalml528\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n172 posts\n11-18-2025 at 06:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMe too; I went from a MM Ortofon Black (very detailed, but unforgiving) to a MC Hana HL. The HL allowed me to still use the MM port on my McIntosh. The improvement in detail and bass were immediately noticeable. But most interesting was how I was able to enjoy less pristine vinyl that was unplayable with the MM cartridge.\ntooblue\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,112 posts\n11-18-2025 at 06:30pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI run different M/C carts and M/M carts in two VERY WELL SETUP systems and have never noticed a difference of more or less noise on the same recording in either system. enjoy the music\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n11-18-2025 at 06:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nsocalml528\nlet me change your last sentence\n\"I was able to enjoy less pristine vinyl that was unplayable with the MM cartridge\"\nI was able to enjoy less pristine vinyl that was unplayable with the Elliptical Stylus.\nAny profile with larger contact surface will make contact with undamaged areas of the grooves.\nI just posted some charts in a related discussion\nhttps://forum.audiogon.com/discussions/reed-2g-magnetic-antiskate\nsocalml528\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n172 posts\n11-18-2025 at 08:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@elliottbnewcombjr\n; I stand enlightened\nand enjoyed your charts.\nvintageadict\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n34 posts\n11-18-2025 at 09:36pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSounds like you made a great upgrade. Congrats. The MC X30 has a good fan base here.\nI have both MC and MM cartridges using similar tonearms and\u00a0 a higher end phono stage. In my experience I have never noticed reduced background noise with the MC cartridges. Stylus profiles are similar to the MC X30 and even the Shibatas that I have are not noticeably quieter in the grove. I do prefer the MC cartridges over the MM but mainly due to bass response and detail.\nelliottbnewcombjr\n\"I suspect something was previously wrong to produce so much noise.\"\nI tend to agree with this. Tonearm/cartridge match and alignment can make significant differences/improvements.\u00a0 I would expect the new Ortofon MC to eclipse lesser\u00a0 Ortofon MMs or the V15 v (especially with a well worn stylus or generic replacement).\nmaam522a\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n203 posts\n11-18-2025 at 10:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@vintageadict\nMaybe some serendipitous change along the way.\nListening to Natty Dread at the moment and Bob says - Yah Man.....\u00a0 Just relax and enjoy man. No need to explain man.\u00a0 Smoke some ganja and enjoy - it's good cause God bring it up from the ground!\nvintageadict\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n34 posts\n11-18-2025 at 10:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOne more thought.\nThe V15 v is a higher compliance cartridge (25) vs\u00a015 \u03bcm/mN of the Ortofon. If your tonearm is more of a mid mass or on the heavier side you may have had a miss-match. I ran a V-15 iv on a Thor","title":"MM to MC - Stunned - Please explain the noise difference...","url":"https://forum.audiogon.com/discussions/mm-to-mc-stunned-please-explain-the-noise-difference"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n181661-108781\nEdit\nOpinions on A/C Noise Meter EMI Testers\nIs there a consensus as to the usefulness of these devices?\nThanks!\njeffseight\n12-27-2022  9:18am\n13 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nlarryi\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,674 posts\n12-27-2022 at 12:38pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nA local dealer has a plug in device that gives a numeric readout of undefined scale or meaning, but is helpful in determining the rough scale of noise problems and how much each change has improved the conditions.\u00a0 It has a speaker that also outputs a demodulated version of the noise (turning ultrasonic noise into something one can hear such that RFI can actually be heard as a radio broadcast).\u00a0 Even after putting in a power conditioner, a customer had noise issues detectable with the meter which was helpful in finding the primary source of the noise--stuff was unplugged around the house until the noise source was found (a string of LED lights in a bedroom on a completely different circuit from the stereo).\nzlone\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,431 posts\n12-27-2022 at 02:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have found mine useful, it is a low cost RFI and EMI detector I bought on Amazon. I used it when building a custom streamer to test the shielding. I also use it to test components and power cables. They all emit something, but it is useful in finding items that are emitting more than their fair share.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n12-27-2022 at 04:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI think they measure something, but I've never seen of one fixing a problem a user could hear.\nI've heard of users who could hear LED power supply problems, didn't need a meter though, it was pretty audible.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n12-27-2022 at 04:45pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nEven after putting in a power conditioner, a customer had noise issues detectable with the meter which was helpful in finding the primary source of the noise--stuff was unplugged around the house until the noise source was found (a string of LED lights in a bedroom on a completely different circuit from the stereo).\n@larryi\n- It is exactly this sort of issue why I don\u2019t put a lot of faith in dedicated circuits or heavy duty wiring for\nnoise reduction.\nI use Furmans which have filtration down to around 3kHz. Not perfect but a lot better than pure EMI/RFI filters. I wouldn\u2019t mind having a dedicated circuit for the sake of power stability but my regulator does a very good job.\njeffseight\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n578 posts\n12-27-2022 at 09:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCan anyone advise a EMI tester brand/price they bought and like?\nSounds like a worthwhile device.\nAnother thought-With all the information on how to bring good power\nto your system it is bothersome to learn of Larry's LED on separate line issue.\nWhat's a person to do???\nThanks to you all for the experience sharing!\ntony1954\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,321 posts\n12-27-2022 at 09:36pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI purchase a used AM transistor radio from the 1970's.\nTurn it on, tune it in between stations and hold it close to whatever you are worried about as a potential source of problems.\nThe bigger the problem, the more static you hear.\nCost me $10, plus gas. I might have broke even of the purchase.\njerryg123\nDetails\nDiscussions\nPosts\nThis discussion\n3,429 posts\n12-27-2022 at 09:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@tony1954\nGenius.\njeffseight\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n578 posts\n12-28-2022 at 02:59am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYeah but those old radios are hard to find now!\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,825 posts\n12-28-2022 at 01:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@jeffseight\nSee if you can find a \"Monster Power, Dr. Power\", on eBay. Well built and works well, plugs into the AC outlet, and/or hold the unit near potential noise sources to check.\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,825 posts\n12-28-2022 at 01:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nphilosurfer\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n26 posts\n12-28-2022 at 05:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe Monster device looks interesting, but I'm a bit wary about trusting a testing device that doesn't come with a shielded power cord (or simply runs on DC via battery).\nboostedis\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n128 posts\n12-31-2022 at 06:46pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI would suggest that if the noise is not audible, then it isn\u2019t likely to have an affect on sound quality and especially enjoyment of the presentation. If this is the case, why would \u2018knowing\u2019 of any noise matter?\u2026\nbartsw\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n295 posts\n06-11-2026 at 04:32am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI picked this up awhile ago.\nhttps://www.fnirsi.com/products/erd-10\nIt makes an audible alarm if the electric or magnetic field goes above a threshold. There's an area about 14x4' spanning my couch where the electric field intensity is over 100 V/m. I'm guessing there's something going on with the motor in the recliner.\nThe electric field intensity is over 400 V/m above, below and behind my power conditioners and the magnetic field intensity is over 40uT. It was on the bottom of the rack and my speaker cables run up through it so I moved it to the top of the rack. If I keep all A/V devices about 1\" above or below the power conditioners, the readings are normal under 10V/m.\nAside from that, power cables give off an audible warning of over 100V/m. So there might be something to expensive power cables vs the cheap OEM. Being within 1' from the wall and power lines also give off a warning.\nI know if you rub shielded interconnects and speaker cables with unshielded power cables, you can hear a hum.\nAt the very least it made me more aware of the wall, equipment and cable placement relative to each other.\nMore to discover\nStep by Step How to Use a Digital Mul...\nSeismometer on iPhone\nPass X250vsX350:same size meter?\nMedium-priced balanced interconnects ...\nFozgometer?\nAntipodes Audio K40\nVandersteen Model 2c ii signature\nAyon Audio S-10IIxs\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Opinions on A/C Noise Meter EMI Testers","url":"https://forum.audiogon.com/discussions/opinions-on-a-c-noise-meter-emi-testers"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198481-134895\nEdit\nWilliam Low interview\nI have always been a little suspicious of Audioquest as a company because I am a little suspicious of the importance of cables BUT but this interview with Founder William Low changes all that. I love this man. I referenced this Occasional podcast episode in another thread but there is so much in it that it deserves a thread of it's own. Also the link I posted there involved Apple and I suspect that may not work for all of you so here is a cleaner link to the podcast web site:\nOccasional Podcast: William Low Interview\nParaphrased Teasers from the interview (Paraphrase because I could not find a transcript of the interview to quote from and I am not going back to listen to the whole thing just so I can get the quote exact. But these are good faith representations of what Mr. Low said. Listen and see if you disagree):\nMy portable bluetooth speaker can do it for me just as well as my $100,000 system.\nI am about to release a toslink digital cable rebranded which is exactly the same as the previous two versions we released. Nobody manufactures their own fiber.\nFurman makes the only power conditioner worth listening to.\nBut there is much more of value in his reflections on the whole Audiophile \"thing\". Have fun and Kudos to the Occasional Podcast and Mr. Low!!\nbruce19\n05-19-2026  6:30pm\n1 response\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nstudio1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n130 posts\n06-05-2026 at 09:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFriend\nThanks for sharing this information.\u00a0 Audioquest is an outstanding company; but their seemingly endless hierarchy of cables can be frustrating for those wanting a end game bargain - if that exists!\u00a0 Each level up their chain will yield inncremental improvements, but how perceivable, quantifiable, and valuable those increases are may vary from person to person.\nMore to discover\nRick Beato's Latest Interview:Warren ...\nStereoTimes Interview with Duke LeJeu...\nCNN Interview with Roger Waters about...\nNew Rick Beato interview today...\nInterview with Bruno Putzeys\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nVandersteen Model 2c ii signature\nBricasti M5\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"William Low interview","url":"https://forum.audiogon.com/discussions/william-low-interview"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198483-137460\nEdit\nAudiophiles and Our Chase for Perfection\nI'd like to solicit some thoughts and responses regarding\nsome of our idiosyncrasies, taboo's and philosophies as audiophiles, specifically with regards to cabling.\nEven if there was some magical fairy dust material that could coax protons and electrons into behaving differently or better; your signal is still going to be subject to the limitations of the \u201cweakest component\u201d in the signal path.\nA perfect example of this is speaker cable. You can spend $50 to $100K or more on them, but as soon as they hit the next connection, junction or conductor, for example, the speaker terminal, you\u2019ve fundamentally nullified any \u201cperceived\u201d benefit from those cables. Not to mention the soldering materials and their impact.\nAnd the cycle goes on through the entirety of the circuit; including the connector/lug, back of the lug terminal, more soldering, wiring from the internal lug to the next component, to the next component and so on until you finally come to the wire or cable connecting to the driver, and even then you hit another junction at the terminal at the speaker itself as well as the subsequent wire from the terminal connecting to the voice coil, then the voice coil wire itself.\nThe bottom line is, there are so many contributors in the path that, unless you tear the entire speaker apart and replace them all with your idea of the \u201cgold standard\u201d or perfect material/component, you're still only going to be as good as the weakest component in the path. At the end of the day, just get some reasonably good 14 to 8 Gauge cables that are made of sound conducting material (e.g. 99.99% copper, or Silver if you prefer) because that same logic can be applied to ALL of the materials in the signal path.\nThe scenario above doesn\u2019t even consider the influence or impact of all of the predecessor components in the signal path coming from the Amp, CD transport, DAC or any and all upstream components, as they all influence the integrity of the signal.\nIt should also be noted that the length the signal travels in that speaker cable (perhaps 6\u2019 to 15\u2019 or so) is a very short path in comparison to the rest of the system both pre and post cable connection.\nThe following is used with permission from Eric Alexander, Founder & Lead Designer, Tekton Design, LLC\n\"I truly believe audiophiles are chasing illusions, constantly attempting to fill an acoustic void that standard high-end audio simply cannot satisfy. When a flashy new component or wire comes along, the industry reacts with predictable, superficial hype. My 'In Real Life' (IRL) technology directly proves this theory\u2014it delivers the authentic sound and visceral connection that audiophiles have been destitute and desperate for.\njijoh123\n05-19-2026  8:10pm\n35 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nhilde45\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,101 posts\n05-19-2026 at 09:25pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe fact that the room is not mentioned is astounding. Most of the changes mentioned in this post would be inaudible or minimally consequential in a bad room. I wonder: how many audiophiles have done everything they can do to their rooms in addition to chasing much smaller tweaks and improvements? My guess is maybe 10% but that seems optimistic. This is a \"wishful thinking\" hobby.\nkevemaher\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n436 posts\n05-19-2026 at 10:14pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI've spent $5K on traps for corners and walls. Well worth it.\nThat amount wouldn't buy a mid-tier power amp today, Class D excepted.\njijoh123\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n76 posts\n05-19-2026 at 10:19pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI appreciate your \"room\" comment, but your probably right, it's likely a fairly small percentage of people who can do a \"true\" proper room setup. Most of the pics I see online of peoples systems are far less than elegant or ideal. Doing a truely proper room could cost as much or more than most peoples net budget for equipment. I've been in some very nice rooms where costs ran in the $30K to $150K range for their room. As for me, I live in the real world, and I don't have a vast stockpile of funds to shed. Even with my modest system most peoples reaction is \"Are you kidding me?! That's an insane amount of money to spend on that!\nHaving a wife, 6 kids and 16 grandkids, I also spend more of those \"extra\" funds doing family things. They are far more important than \"things\". THEY are my life. But I am blessed with some means to satisfy my love of music, that along with a very supportive and loving wife. I could not ask for more.\ngoleksiak\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n84 posts\n05-19-2026 at 11:27pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@jijoh123\nSounds like this hobby is driving you crazy. Sell your gear and get into something else. Life's too short. Respectfully.\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n05-20-2026 at 01:03am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOP... \"you\u2019ve fundamentally nullified any \u201cperceived\u201d benefit from those cables. Not to mention the soldering materials and their impact.\"\nThis is where the problem is in this logic. This is not true. Say you installed 6\u2019 of cable, you have improved that six feet of the audio pathway. A well soldered connection does not represent the same potential as six feet of cable or a component. It is a system and it all maters with varying degree. That is why most folks begin an upgrade with the speakers, then the components, then the cables and power cords and room acoustics, and electrical outlets... adding direct lines. It all maters in different proportions.\nxmbw4\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n38 posts\n05-20-2026 at 01:53am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nghdprentice,\nYou're right. The problem is these type of posts have nothing to do with cables, or any other similar product. Certain aspects of high end audio offend some people to the very core of their being. They will argue for decades and dream up complicated, technical theories as to why they're right and never come 1% closer to answering any questions, or solving a problem. Its a never ending cycle where the goal is to continue the argument, not getting to the truth. If you wanted to get to the truth on cables, it is not hard to set up a test that meets scientific standards. You have to test for something real and it has to be objective. For example, \"Is there an audible difference between cable A and cable B?\". That's a valid test. Its objective and will prove an audible difference exists if done properly. From a scientific standpoint, that's all you can do. Things like, \"Are more expensive cables better than cheap ones?\", or taking measurements with the assumption that they will prove or disprove what a person hears, with out actually doing the listening tests to back it up, is pure nonsense. Junk science. Simple, objective testing that meets scientific standards could have been done years ago. The deniers refuse to do any of it. Their go to argument is, its our job to do the test because we're the one's making the cla","title":"Audiophiles and Our Chase for Perfection","url":"https://forum.audiogon.com/discussions/audiophiles-and-our-chase-for-perfection"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198471-134895\nEdit\nIs Sound Stage an artifact of recording?\nYesterday had the opportunity to hear a fine chamber music concert featuring musicians from the NY Philharmonic in a small modern chapel with a slightly domed wooden roof. We sat about 15-20 feet from the musicians. The all acoustic sound was excellent. The Schubert Trout piano quintet\u00a0 and Brahms piano quartet in G were the program. Afterwards while de-briefing at dinner with an audiophile friend who went with me and our wives, he made the point that despite the excellent acoustics and premier seating he could not close his eyes and see a \"sound stage\" during the concert. I had noticed the same thing. The locations of the instruments were diffuse. You could not pinpoint the location of the violin as you might expect you could on a good recording of the same work! We agreed that this was not the first time we had noticed this about live music. So I put the question to learned assembly here on Audiogon. Is sound stage something that is invented or perhaps just an artifact of the recording process to help us get the illusion of real musicians playing in front of us. Responses from those of you who have made recordings will be particularly appreciated.\nbruce19\n05-18-2026  6:50pm\nNext \u203a\nLast \u00bb\n61 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nPost removed\nMay 18, 2026\nPost removed\nMay 18, 2026\nmapman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23,710 posts\n05-18-2026 at 08:37pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt\u2019s largely \u00a0a matter of perspective at an acoustic live event. \u00a0Where are you located relative to the players? \u00a0Usually not very close and you hear as much or more reflected sound than direct.\nRecordings are similar but different. \u00a0The producers and engineers control what you hear as part of the production process. \u00a0Similar scenario when electronic amplification, mixing and production is involved with a live concert.\nEvery recording is different. \u00a0That\u2019s part of what makes them so interesting.\nkevemaher\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n436 posts\n05-18-2026 at 08:43pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nA concert hall has a huge advantage.It was expressly designed to have excellent acoustics. Rooms at home are not.\nI regularly go to operas and concerts. At times I can pinpoint instruments, especially percussion, but mostly not.\nCreating a \"sound stage\" on recordings is an attempt to recreate that sound environment at home. It is a nearly impossible task. The best approach to recording orchestral music is to place microphones in such a manner that the \"concert hall\" experience, not a \"sound stage\" is reproduced as accurately as possible.\nClassical music and operas are unique in this respect. Other types of music rely on electronic effects (both during and post recording) to achieve desired results. Recordings of live performances usually have more energy than studio recordings but suffer from the mistakes that are usual in live performances.\nPost removed\nMay 18, 2026\ntomcarr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,819 posts\n05-18-2026 at 09:09pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI think you're referring more to \"imaging\" than a soundstage.\nYes, at a live event the images are definitely more diffuse than what I hear on my system.\nsteakster\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,220 posts\n05-18-2026 at 11:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nListening in a venue while seated in one location is one thing.\nEngineering a recording with multiple microphones in multiple locations is another.\nBoth respect the music.\nlanx0003\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,051 posts\n05-19-2026 at 01:00am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt is pleasant spatial cue information stored in the recording. I don\u2019t know why you would label it as an \u201cartifact.\u201d When I attend a symphony orchestra concert, I can clearly hear layering, instrument localization, and depth of soundstage. With proper acoustic treatment in a concert hall to control and diffuse echoes, those spatial cues should be clearly perceptible. Recording and mixing techniques\u2014especially multi-miking\u2014are used to recreate that experience.\nPlease keep in mind that no concert hall has perfect acoustics. However, some of those imperfections can be mitigated through proper multi-miking and mixing techniques. That might explain why you perceive a difference.\u00a0 To recap, spatial cues are definitely\nnot artifacts\n; rather, they are a critical element of recordings.\nallears4u\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n198 posts\n05-19-2026 at 01:34am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFrom KISS, to Rush, Peter Frampton, Joe Walsh, and innumerable classical venues and concerts...rarely does live music sound great. Concert symphony is often very disappointing except in one notable sense...its much louder than I often listen to at home. Even so, it reminds me of the over all presentation of the classic floor box speakers produced by Macintosh in the late 70's. Blurry, boomy, muddy, and enveloping. Recorded music specifically made to be reproduced on home systems is uniquely better from anything but tiny venue jazz clubs. Now that can be great depending on your position relative to the band. Most bands or groups of musicians are generally horrible at creating good sound for the audience in a group setting. Therefore, while not reproducible in 99% of live settingsI've heard recorded music is wonderful and much less fatiguing than a boomy concert hall full of coughing, sneezing, whispering humans distracting me from enjoying the vibes. Therefore, I own a very nice home system. (More comfortable chair too) LOL\nbruce19\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n387 posts\n05-19-2026 at 02:44am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@tomcarr\nGood point and I actually mean both because how do you perceive a sound-stage without images of the players?\n@lanx0003\nAn artifact as I am using it means something created by a process but not necessarily intended. A by-product. It is neither good nor bad\nIn the case I am talking about the music was all acoustic and the room's qualities were altered by the fact that it was filled with people seated in chairs. That is a lot of objects for sound to bounce off before reaching my ears. No doubt this contributed to the lack of localization. I just think it is interesting to re-consider our systems in light of the kind of music we listen to and also the venues we wish to reproduce. Some years back\n@ghdprentice\nand I had a discussion where I took the position that it might work best if you built a system specific to the kind of music you listened to the most and he said no, a good system was a good system and that was all you needed.\u00a0 I still maintain that depending on your musical tastes you might be able to build and acoustically excellent system for not very much money if it is tailored to certain types of music. Alternatively you can build a system and room that is breathtakingly good with all music but it will be rather expensive.\ninna\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,240 posts\n05-19-2026 at 04:08am\nCopy Comment URL\nReport Comm","title":"Is Sound Stage an artifact of recording?","url":"https://forum.audiogon.com/discussions/is-sound-stage-an-artifact-of-recording"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198423-1149\nEdit\nVandersteen - Richard Vandersteen Seminar Introduction of his new preamplifier Tone Studio\nHello,\nI am hosting the Vandersteen - Richard Vandersteen Seminar which is the Introduction of his new preamplifier at Tone Studio Indianapolis, Indiana. Richard himself will be there and will talk about his newest preamplifier. The event is on May 16th, 2026 - Saturday. Starting at 3 pm and we will continue on as people are still in the store.\nThe event is free to attend:\nTone Studio\n623 E North Street\nIndianapolis, Indiana 46204\nPlease send me a text or call me to reserve a spot: 317-696-1742\nOnce again - completely free and would be happy to have to you come and listen to the Model Seven, Kento, Trio, and Quattro. Full line up of the Vandersteen.\nPart of the Magnificent Seven.\ntonestudio\n05-11-2026 10:34pm\n2 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nseymour-krelborn\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n121 posts\n05-13-2026 at 12:57am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAsk Richard about his encounter with Tom Cruise.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n05-25-2026 at 03:45pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHow exciting!\u00a0 I have heard their amplifier and it is really stellar.\nMore to discover\nLittle Richard, Big Mama Thornton and...\nRichard Gray Power Conditioner/UPS Ma...\nRichard Gray 600s vs PS Audio Premier\nLittle Richard!!! RIP!!!\nRichard Gray 400 ?\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nVandersteen Model 2c ii signature\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Vandersteen - Richard Vandersteen Seminar Introduction of his new preamplifier Tone Studio","url":"https://forum.audiogon.com/discussions/vandersteen-richard-vandersteen-seminar-introduction-of-his-new-pream"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198503-115813\nEdit\nDoes Ultralinear kill dynamics\nThere are manufacturers (no names) that state that Ultralinear circuits will impact dynamics in a negative manner. I\u2019m sure it also depends on design. Maybe I should consider an integrated change. \u00a0Comments welcomed. Thanks.\nbigwave1\n05-21-2026  4:23pm\n18 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n05-21-2026 at 04:48pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAnywhere near me, Plainfield, 07062? Come listen.\nMy Cayin A88T can instantly and remotely switch between Triode (22 wpc) to Ultralinear (45 wpc). Many other makers now do this.\nI and ALL my friends prefer Ultralinear. I do not need the extra power, my speakers are very efficient, nevertheless knowing you have more power reserve for instantaneous peaks is reassuring.\nYour system appears to be very revealing. If close, we could drag it over to hear in your system. Why I bought mine:\nhttps://6moons.com/audioreviews/cayin/a88t.html\nWhoever you bought all that fine equipment from ought to bring you a truckload to try at home!!!!\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n05-21-2026 at 04:57pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI use an Audio Research Reference 160 amp. It has UltraLinear (140wpc) and Triode mode (75wpc). I and everyone else who has listened to it have chosen the Triode mode. There seems to be no effect on the dynamics or loudness, but the sounds in triode mode is more natural and fleshed out.\nI think it is likely if you are close to not having enough power then the relationship between the tradeoffs would change.\ncleeds\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,635 posts\n05-21-2026 at 05:09pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nbigwave1\nThere are manufacturers (no names) that state that Ultralinear circuits will impact dynamics in a negative manner.\nWhy the secrecy?\nbigwave1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n283 posts\n05-21-2026 at 05:46pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNo secrecy, just general comments. Ayon discusses the technicals, way out of my credentials.\nbigwave1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n283 posts\n05-21-2026 at 05:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@ 07062, thank you, 3 hour drive with good conditions. I\u2019ll put it on the schedule next trip nearby. Likewise, welcome also at 11743.\nknotscott\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,430 posts\n05-22-2026 at 11:48am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy amps have a switch that allows UL or triode.\u00a0 I\u2019ve always preferred triode, and typically switch back to triode within a few minutes of trying UL.\u00a0 I've never noticed a loss of dynamics from UL, but the texture and sound stage sounds more natural and spacious in triode.\nFWIW, Convergent Audio Technology amps use triode.\nstudio1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n130 posts\n05-22-2026 at 12:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFriend\nIMHO Ultralinear mode is just not as friendly to the overall musical performance as triode.\u00a0 To me Triode just seems to have more of a \"you are there\" effect!\u00a0 The decision is along the lines of\nUltralinear's higher power output vs\nTriode's detail, sonic purity, and warmth\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n05-22-2026 at 12:34pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@bigwave1\nThanks for the invite, but you would have to put up with me for a week. That's the minimum stay (I told Donna), for me to suffer the DRIVE to/fm LI.\nWe have several friends who live out there, haven't seen em in a long while.\nYou can probably just scoot over to Jones Beach, that would be nice.\ngiantsalami\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n266 posts\n05-22-2026 at 12:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have an Ayon amp, pre, and CD player and couldn't be happier. I previously owned PL ultra linear mono blocks, and I definitely prefer the class A Ayon. The Ayon can be switched from pentode to triode. I am about 25 minutes from Elliot in CT.\nalexatpos\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,296 posts\n05-22-2026 at 12:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n'The term 'ultra-linear' was used to describe the invention that is the subject matter of\nUS patent number 2710312A\n. You'll see it used in the text of the patent. Its an accurate description of\u00a0 the time about a break thru in amplifier technology. Diagrams of how it works are at the link.\nIt can be made switchable by having a switch connect the screen of the power tube to its plate as opposed to the tap on the output transformer.T\nTo do it properly, the output transformer would have to have taps for triode operation since the optimal plate to plate load for a power pentode wired in triode is a lower impedance than that used for UL operation. That could make the transformer a lot more expensive and the switching a bit more complex.\nIf the UL taps are set up properly, the amp should have less distortion in UL mode. FWIW, this was well understood in the 1950s when UL was first patented. Distortion obscures detail; so if the output transformers are properly designed it should be no surprise that the UL mode sounds better.\nA secondary aspect of this is power tubes in UL mode are easier to drive than the same power tubes in triode mode. So the amp very likely is also making less distortion on this account too.'\nfrom one of the previous discussion on the subject, all written by R.K. from Atmasphere\ninna\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,240 posts\n05-22-2026 at 07:43pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFirst thing that you want in an amp is enough clean power. Then the rest. In my case of VAC Avatar SE it doesn't have enough power in Triode mode even for my quite sensitive speakers and average size room so I don't use it. And it doesn't have any other possible advantage, I don't even know why Kevin of VAC put it there.\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n05-22-2026 at 08:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@giantsalami\nI am good friends with Rick, whom I met here, who lives in Norwalk, CT, +/- 2 hrs.\nHis parents live in Princeton, so he goes past me to get there.\nWe do 2-3 day stay overs at each other\u2019s houses, share other interests, ....\nWhere, in CT, is 25 minutes from 07062?\n25 minutes is nothing. Interested in getting together some day?\n////////////////////////////////////////\nWe just met at the Blue Note to see Ron Carter\u2019s 89th Birthday party/performance there. We both took the train from opposite directions. Lots of possibilities, good weather, ....\n///////////////////////////////////////\nYet another friend I met here, in Montclair, NJ, 1 hr away. We do day trips, sometimes hit LP stores hither and thither. He's the friend I helped with the Luxman PD444 Two Arm TT.\nWe've gone to VAS together, I just wrote him, glad this reminded me.\ngiantsalami\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n266 posts\n05-22-2026 at 09:30pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n","title":"Does Ultralinear kill dynamics","url":"https://forum.audiogon.com/discussions/does-ultralinear-kill-dynamics"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198358-520\nEdit\nBrent Jesse rebirth?\nI bought several tubes from Brent Jesse. \u00a0Following his exit, Did anyone buy the assets or intend to resurrect that business?\nlloydc\n05-04-2026  8:22pm\n24 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nmofimadness\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,591 posts\n05-04-2026 at 08:57pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nhttps://www.audioasylum.com/cgi/vt.mpl?f=tubes&m=288321\nstrateahed\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n320 posts\n05-05-2026 at 01:18am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks for the heads-up\n@mofimadness\n.\u00a0I was looking for just this type of information. Much appreciated!\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n375 posts\n05-05-2026 at 10:05am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nyes. the guy who bought it sold off\u00a0 his own inventory a coupla years before\nrushfan71\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n319 posts\n05-05-2026 at 11:52am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nJust a heads up, the new website comes up as not secure. Not sure if it's something the new owner needs to work on or if it's a scam. Stay vigilant and do your own DD.\ndill\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,636 posts\n05-05-2026 at 12:29pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNot for me, it comes up clean and I have talked to the new owner.\nrushfan71\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n319 posts\n05-05-2026 at 01:14pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDill look at the address bar on your web browser. It says\nNot Secure- vacuumtubes.com\nA secure website will have a padlock icon before the web address.\nThat being said it\u2019s good to hear you talked to the owner and it seems Brent\u2019s business is continuing on. He was one of my go to guys for tubes.\ncuriousjim\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,165 posts\n05-05-2026 at 01:25pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks\n@lloydc\nFor asking a question I\u2019ve been thinking about for awhile.\nThanks\n@mofimadness\nI only hope that vacuumtubes.com are as knowledgeable and fair as BJ was.\npooreboy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5 posts\n05-05-2026 at 02:09pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThis is the correct url for the new website:\nhttps://www.audiotubes.com/\nAnd it is a secure website.\ninagroove\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n302 posts\n05-05-2026 at 08:43pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@pooreboy\nthat URL takes me to BJesse's old site.\u00a0 What that your intention, or did I miss something?\noldrooney\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n268 posts\n05-06-2026 at 03:51am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI heard someone say that tube\u2019s days are numbered because the guitar and bass players are moving to class D amplification. I think it may have been Ralph Karsten of Atmaspere at this year\u2019s Axpona. I have a tube amp in service and several more that I would like to bring on line.\ndill\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,636 posts\n05-06-2026 at 12:35pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n\"yes. the guy who bought it sold off his own inventory a couple years before\"\nDo a Google search for Jon Oas for more info on the new owner.\nhilde45\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,101 posts\n05-06-2026 at 01:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI heard someone say that tube\u2019s days are numbered because the guitar and bass players are moving to class D amplification. I think it may have been Ralph Karsten of Atmaspere at this year\u2019s Axpona. I have a tube amp in service and several more that I would like to bring on line.\nI hear\n@atmasphere\nsay that a couple of times. That would seem to free up the tube supply for two channel audio, at first glance. I suppose his point was that the professional downturn in demand will cause tube companies to go out of business? Have I got that logic right, Ralph? So all\nthat will be left will be the remaining supply that guitar and other pro applications don't need? And that the tube makers will now be only boutique and/or very expensive?\nI can't quite figure out why tubes will be going away or getting scarce on Ralph's reasoning but am interested to learn.\npooreboy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5 posts\n05-06-2026 at 01:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\ninagroove\n, in a sense...yes. The new owner,\u00a0Jon Oas, has posted on Jesse\u2019s old site his intentions, and he is in the process of transferring everything to his new site...which he is still working on.\nI hope he is able to get it up and running soon, and I\u2019m certain that it will be a secure site, just like Jesse\u2019s.\nSorry for the confusion.\natmasphere\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n12,453 posts\n05-06-2026 at 04:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI suppose his point was that the professional downturn in demand will cause tube companies to go out of business? Have I got that logic right, Ralph? So all\nthat will be left will be the remaining supply that guitar and other pro applications don't need? And that the tube makers will now be only boutique and/or very expensive?\nI can't quite figure out why tubes will be going away or getting scarce on Ralph's reasoning but am interested to learn.\n@hilde45\nyou have the reasoning right. Guitar amps are 90% of the global tube market and have been for decades.\u00a0 The war in Ukraine has not helped as it has caused tube prices to increase quite a lot recently. Right now its not too much of an issue, but even in high end remains the simple question of what if a solid state amp comes along and sounds better than the tube competition?\nI enjoy tubes quite a lot. I like to devise circuits for them and build projects, just for the fun of it. Its made me keenly aware that some of the appeal of tubes has an artisan quality about it.\nhilde45\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,101 posts\n05-06-2026 at 05:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@atmasphere\nRight now its not too much of an issue, but even in high end remains the simple question of what if a solid state amp comes along and sounds better than the tube competition?\nThank you. This helps me see there are two distinct rationales for developing new types of amplifier -- one is the\u00a0possible tube shortages and the other is the potential for amplifiers that are more energy efficient, easier to maintain, and perhaps more amenable to a wider set of speakers while sounding as good. I suppose the \"as good\" part will have to include \"as good and tube-like\" for those of us that like tubes, but I suppose there can be a lot of ways to accomplish that. My Pass XA-25 already proves it's possible.\natmasphere\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n12,453 posts\n05-06-2026 at 06:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@hilde45\nYes. If there was a robust manufacturing of the SIT transistors, not just power transistors but also signal transistors, we'd have seen tubes vanish long ago as SITs have triode linearity and even soft clipping.\nFortunately class D has come far enough that it can do q","title":"Brent Jesse rebirth?","url":"https://forum.audiogon.com/discussions/brent-jesse-rebirth"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198388-7914\nEdit\nSignal Generator\nI have a cheapo signal generator that I use for sending frequency thru the system to measure spl ect, sometimes its too narrow is there a variable width unit\nhiend2\n05-08-2026  2:50am\n2 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nkoestner\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n742 posts\n05-08-2026 at 11:49am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThere are lots of downloadable WAV files that should do the job.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n05-09-2026 at 01:23am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nUm, not sure what the question is but maybe you are using the wrong tool?\u00a0 Room EQ Wizard will measure and act as a signal generator as well.\nMore to discover\nUltrasonic generator to speaker\nI have a AC Regenerator. Get dedicate...\nFancy Fuse for Regenerator?\nPS Audio regenerator P600 or Premier?\nPower regenerator or filter for DAC?\nBricasti M5\nRSX MUSIC SERVER RSX MUSIC SERVER\nFocal 36 MONTH FINANCING\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Signal Generator","url":"https://forum.audiogon.com/discussions/signal-generator"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198381-365\nEdit\nNeed help with weird phono hum..\nWhat\u2019s weird about it is that when I switch to the phono input it lasts for about 3 - 5 seconds and then goes away. \u00a0Usually the ground loop hums I experience are there to stay - until I\u2019m lucky enough to find the source and eliminate it. \u00a0Has anyone experienced something like this?\nrussellrcncom\n05-07-2026 12:43pm\n1 response\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nkevemaher\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n436 posts\n05-07-2026 at 08:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhat is it that you switch? A rotary pot, a toggle, or pushbutton?\nIs it only with the phono? What happens when you switch from phono to a different input? Or from one non-phono to a different non-phono input?\nNarrowing down the instances where and when the hum happens\nwhen it doesn't happen will be very helpful in directing your troubleshooting efforts.\nMore to discover\nupgrade from NAD S100 proprietary pho...\nAnyone heard the Don Sachs Custom Tub...\nAyre Phono P5xe settings low / Med / ...\nrecommendations of phono preamps  &lt...\nTable,cartridge,phono...where to put ...\nBricasti M5\nAurender N100H\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Need help with weird phono hum..","url":"https://forum.audiogon.com/discussions/need-help-with-weird-phono-hum"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194844-129255\nEdit\nFo.q Tape Gone?\nBought some Fo.q tape along time ago for use around my 2 channel home system.\u00a0Getting into redoing my car audio system lately. Working on acoustic treatment/vibration control. Was going to use little strips of Fo.q TA102 on plastic trim pieces to keep stuff from resonating. Can't find it anywhere. What gives? Anything similar to it on the market? I just want to stick and forget.\nakwilson501\n06-18-2025  9:38pm\n6 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ndekay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,249 posts\n06-18-2025 at 10:34pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTry Oyaide (go through their links to distributers/dealers).\nhttp://www.oyaide.com/en/products/emi_wave_absorbers/nrf-005t-edit\nDeKay\ndekay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,249 posts\n06-18-2025 at 11:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHere's a link to a single roll...\nhttps://www.ebay.com/itm/226325242241\nDeKay\ndekay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,249 posts\n06-22-2025 at 04:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI found another tape (the Green one in the video), but you will have to ID it.\nhttps://www.facebook.com/reel/1165258265363533\nDeKay\nslaw\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n26,979 posts\n06-27-2025 at 04:13pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIs this stuff on the grey market like cables?\ndekay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,249 posts\n06-28-2025 at 04:38pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf you search eBay for the Oyaide tape I linked is comes up for approx. $40 (shipped) from the UK - the lowest price I found.\nI suspect that the OP\u2019s tape is/was an Oyaide product that was marked up 3X for sale to the \"phile\" market.\nI didn\u2019t dig deep and suspect that Oyaide may have a similar/thinner version.\nMy only experience with Oyaide is pertaining to a tape used by physical therapists that stimulates nerves and atrophied muscles.\n25+ years ago a distributor to the USA marked its up gobs (10X?) and I found it @ the source (cheap) for a friend who did PT.\nIf you are referring to the Green Microwave tape in the video I can\u2019t help you as I have since signed an NDA.\nhttps://www.facebook.com/reel/1165258265363533\nDeKay\nsgordon1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n478 posts\n05-07-2026 at 03:48pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe Oyaide NRF-005t tape is excellent. \u00a0Easy to use, with huge sonic benefits. \u00a0A bargain, even at $80+ a roll.\nMore to discover\nUsing parametric EQ for non-RIAA mono...\nWho has Luv for the Lyngdorf 2170 and...\nHas anyone use bel canto s125's with ...\nI need schematic for Monsoon Planar M...\nNew Firmware for Sony HAP-Z1ES  (3-1-17)\nAurender N10\nVandersteen Model 2c ii signature\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Fo.q Tape Gone?","url":"https://forum.audiogon.com/discussions/fo-q-tape-gone"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n189743-102456\nEdit\nCan a poorly connected XLR connection cause a reduced(less loud) signal?\nBeen chasing a gremlin. I have an XLR balanced connection between a ROSE HIFI 150b DAC/streamer and an Accuphase E-380 Integrated Amp.\nI have noticed the left channel to be a bit quieter, less bright, and measuring a bit lower on the Accuphase\u2019s DB meters. The problem has been intermittent. I feel like I may have solved it, albeit temporarily, by pushing the XLR farther into the connector on the ROSE HIFI. I had read on their forum site that those connectors could be problematic.\nBut the basis of my question is: Can a poor XLR/balanced connection result in a lower/softer sound?\nI have experimented with switching the cable, and even bought a different cable, don\u2019t believe it to be a cable issue.\nEdit: yes, I know my post title is a grammatical nightmare.\ngemoody\n05-05-2024  5:46pm\n13 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n05-05-2024 at 06:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nXLR has two signal conductors, if one is not working you loose about 6 dB of output.\nSwapping a cable L to R should diagnose if this is a cable issue or not.\nbolong\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n966 posts\n05-05-2024 at 06:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI think I have experienced this issue before. XLR's sometimes do not have a very robust grip. On suspect connections I have wrapped the XLR's with tape with extra length attached to top of amp to act a sort of \"hoist\" that pulls the connector upwards thus reducing sag. This is a commonly known technique for improving the connection of power cable plugs too.\ncarlsbad2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,036 posts\n05-05-2024 at 10:22pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nyes.\u00a0 Like Erik said.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n05-06-2024 at 03:28am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n*lose\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n05-06-2024 at 02:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIn my case, similar to yours, it turned out to be the XLR cable itself\ngemoody\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n191 posts\n05-06-2024 at 04:31pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks for all the responses. \u00a0I have tried multiple new cables, but have also ordered a cable tester, and tomorrow will be able to know for sure about cable. \u00a0I have seen other posts on the ROSE HIFI forum that these connectors could be problematic. I have entered a support ticket on that forum. Will let you know what I hear.\n@elliottbnewcombjr\nwas your issue on Rose HiFi gear, or something else?\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n05-07-2024 at 12:10am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy xlr problems on OPPO video with supposedly great audio.\u00a0 And cables front my Sony sacd player and cables in out of dual 31 1/3 octave bands. Back to rear everything equal and no noise\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n05-07-2024 at 03:07am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nmake that back to rca ....\ngemoody\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n191 posts\n05-07-2024 at 12:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks\n@elliottbnewcombjr\nYes, I have switched back to RCA, and things work as designed. It\u2019s an \u201cOK\u201d solution, as I purchased and paid extra for, these two pieces so that I could connect them in balanced fashion.\nI\u2019ve reached out to ROSE HIFI support, as the problem does appear to be on their end. Rather it be their electronics or connector.\ngemoody\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n191 posts\n05-07-2024 at 03:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHow do I know cables are good, I purchased a cable tester from Amazon.\u00a0 Love it!\u00a0 Highly recommended piece of kit for tinkering audiophiles.\u00a0 See link.\nAmazon : Behringer CT200 Microprocessor-Controlled 8-in-1 Cable Tester\nmuvluv\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n105 posts\n04-13-2026 at 10:22pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYes an xlr cable can cause low volume I just had a similar issue I had to turn my dac all the way up and amps up to hear almost anything. I troubleshoot by disconnecting xlr from everything and tried each amp individually they all worked fine so the last xlr was causing the issue when I connected it the sound went low again. I than tested the cable and the ground signal has an issues I redid both sides and fixed the cable and sound returned to normal. A tip for plug-in xlr there is usually a click that lets you know if you don\u2019t hear a click it\u2019s not connected properly.\nmuvluv\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n105 posts\n04-13-2026 at 10:25pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nhttps://forum.audiogon.com/posts/2686799\n@bolong\nthat is why I like locking xlr connections\nbolong\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n966 posts\n05-07-2026 at 02:36pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have always been curious as to why Audio Note uses only RCA connectors. It's the way I have gone as well since the XLR's with my Cornwall horns are overly and abruptly too dynamic.\nMore to discover\nCan a poorly connected XLR connection...\nPowered Subwoofer connected to integr...\nBluetooth/USB/3.5mm connected integra...\nInput ground loop hum only when p10 c...\nNAD C399 connected to the Nalai Hypex...\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAntipodes Audio K40\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Can a poorly connected XLR connection cause a reduced(less loud) signal?","url":"https://forum.audiogon.com/discussions/can-a-poorly-connected-xlr-connection-cause-a-reduced-less-loud-signal"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198338-197760\nEdit\nR&D vs. Marketing: Are we paying for tech or fake online hype?\nI opened up a highly-reviewed $3K streamer/DAC last week out of curiosity. The actual tech inside? An off-the-shelf ESS board and a basic switching power supply. The R&D budget clearly wasn't spent on the circuit design or component quality. But if you look at this brand online, they have massive social media accounts, thousands of likes, and constant hype. It\u2019s pretty obvious what's happening. A lot of these newer boutique audio brands aren't growing organically. They just use panels like\nfameviso.com\nto buy thousands of followers and fake their prestige. They build a fancy aluminum chassis, buy the \"clout\" so reviewers take them seriously, and sell us basic, unoriginal tech at a huge markup. When did the audio industry shift from paying for massive toroidal transformers and custom capacitors to paying for a brand's fake Instagram budget? Am I the only one noticing that actual electrical engineering is taking a backseat to social media marketing?\nradiantdream\n05-01-2026  8:17pm\n17 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nlimomangus\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,079 posts\n05-01-2026 at 08:25pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt happens alot...Buyer\u00a0 Beware\u00a0 .\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,788 posts\n05-01-2026 at 08:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou don't have to pay attention to social media marketing.\nkennyc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,146 posts\n05-01-2026 at 11:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@kr4\nYou don't have to pay attention to social media marketing.\n+1 the only thing that\u2019s important is a component\u2019s performance/price. \u00a0Trying to justify \u201cvalue\u201d in our small niche luxury hobby is fruitless.\njasonbourne71\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,904 posts\n05-02-2026 at 07:16am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhat DAC are you talking about?\ngkelly\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,124 posts\n05-02-2026 at 11:49am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019m confused about these kind of arguments. Everything is built to a price point. If someone can come along and do it cheaper, they will.\nted_b\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n96 posts\n05-02-2026 at 01:48pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOne unsurprising revelation of HiFi components is price is a suggestion, but not an absolute indicator of what's inside. A recent post concerned a certain upmarket DAC that used the exact same inexpensive third-party USB receiver/clock card used in DACs with an MSRP literally at 5% of the former.\nJust as it makes good sense to have some working knowledge of engines and mechanicals when buying/selling expensive performance cars, the same general advice applies to HiFi components.\ncorelli\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,203 posts\n05-02-2026 at 02:37pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThis has gone on for some time now.\u00a0 I recall a \"respected\" manufacturer years ago that took the innards of an oppo cd player, put it in their fancy case and jacked the price.\u00a0 Yes, take a look inside and see what your money is buying.\u00a0 Sometimes, embarrassingly little!\nlarsman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,218 posts\n05-02-2026 at 02:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWith all due respect, without your mentioning a brand or model, there's nothing to even take your word for.\njl35\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,489 posts\n05-02-2026 at 03:29pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n+2 kr4\nkijanki\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,510 posts\n05-02-2026 at 06:25pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWell executed SMPS is way better that linear power supply IMHO.\u00a0 They only got bad rap from very poor noisy computer implementations.\nLinear power supply with huge transformer and a lot of capacitors is in reality a primitive SMPS operating at 120Hz drawing current from mains in short pulses of high amplitude, switching at maximum voltage.\u00a0 It produces not only 120Hz ripple (hard to filter out), but also high frequency switching noise, not to mention that is line and load unregulated and sensitive to DC presence in supply.\u00a0 \u00a0In contrast, resonant mode SMPS is very quiet switching at zero voltage / zero current.\u00a0 Transformer can be very small because of high switching frequency that is also easy to filter out without huge capacitors.\u00a0 In addition it is line and load regulated and insensitive to DC on mains (can operate from DC).\u00a0 Benchmark Media reduced noise in DAC2 by 10dB replacing linear supply with SMPS.\u00a0 They use SMPS in AHB2 power amp achieving 132dB S/N.\u00a0 Other companies, like Rowland, eliminated linear power supplies completely.\u00a0 So, with all these benefits of well executed SMPS, why do we still produce these monstrous unregulated linear supplies?\u00a0 Perhaps it is because designing resonant mode SMPS is not so easy, while Linear Supply has only 3 components?\u00a0 Perhaps market demands it (People still strongly believe in them.\u00a0 Big and heavy must be good)?\nI'm also not sure what \"Off-the-shelf\" ESS board is.\nIn general, if somebody is taking advantage by selling gear consisting of some kind of generic modules people are free not to buy.\u00a0 If these modules are so generic it would be easy to buy them and to build DAC or amp.\nAre we offended by fake or inflated advertising?\u00a0 Not in audio, for sure.\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,788 posts\n05-02-2026 at 08:49pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'm also not sure what \"Off-the-shelf\" ESS board is.\nIt probably means an exact duplication of the ESS Evaluation boards.\nSee:\nESS Evaluation Boards\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,788 posts\n05-02-2026 at 10:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOf course, there\u2019s really nothing wrong with this because ESS probably know how to get this right.\u00a0 OTOH, it\u2019s wrong if the product manufacturer implies otherwise.\neasystreamer\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n138 posts\n05-03-2026 at 02:33pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDon't forget that the magic sauce is the software that makes the hardware sing. This is where a lot of manufacturers struggle (or fail) to keep up with compatibility and new developments. A major cause of much frustration for users that want our equipment to just work. Software development is not cheap.\nSo yeah, once you get past the sexy first impressions of the jewelry boxes, there is not much to look at inside except for some circuit boards and power supplies. This is particularly true of streamers (glorified computers) and DACs.\nHow special it feels when you do look inside to see copper screws holding down those PCBs or beautiful cable routing :)\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n05-03-2026 at 05:45pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHow about a photo of the innards?\nI like taking the covers off, seeing what\u2019s what. You learn a lot, even if you don\u2019t understand what is what.\nI","title":"R&amp;amp;D vs. Marketing: Are we paying for tech or fake online hype?","url":"https://forum.audiogon.com/discussions/r-d-vs-marketing-are-we-paying-for-tech-or-fake-online-hype"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198337-202413\nEdit\nMcIntosh\nWanted to give a shout out to McIntosh tech support. I was having trouble trying to get my t.v to audio thru my McIntosh MA 7900 integrated amp using a toslink optical cable. The Mac tech guy was extremely helpful spent about half an hour on the phone with me helping me re-assign a mode to operate the t.v. sound off of the CD2 format and it worked. Also found out how to do a factory reset on my amp. I got right through on the phone both times I called. I give them a 10 on the scale.\nzx10\n05-01-2026  7:41pm\n7 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nwinoguy17\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,344 posts\n05-02-2026 at 12:46pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWell.... a month ago I sent an email to them thru their website. I got a confirmation email saying it was received and someone would be in touch shortly ... still haven't heard.\nstereo5\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,728 posts\n05-02-2026 at 05:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPerhaps call them instead.\nzx10\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n167 posts\n05-03-2026 at 12:32am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCall then on the TELEPHONE like stereo5 said.\ngkelly\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,124 posts\n05-03-2026 at 01:03am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI was wondering about dude who was complaining about McIntosh having bad customer service was gonna pipe in.\nhttps://share.google/EGkODwBpNVOyDD1GP\nin case your part of the interweb is broken. Here is the link on mine.\nzx10\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n167 posts\n05-03-2026 at 02:16am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYep , that's the # I called got right through both times the second call was the next day to thank him they are 3 hrs ahead of me here in Az. Funny , some folks just like to complain\nwinoguy17\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,344 posts\n05-03-2026 at 12:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nLighten up Francis. Not complaining, simply stating my experience. Why have \"Send us a message \" so prominent on your site only to ignore it ? \u00a0Not a big deal, don't get your panties in a bunch.\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n05-03-2026 at 02:13pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy experience was excellent.\nI called, pre-arranged checking a C-22 preamp and MA-2250 amp I intended to sell.\nDropped it off thursday after lunch, spent the weekend with my friend in Vestal, picked them up late Monday.\nThey had said \"if nothing seriously wrong, we will have them ready for you\"\nMy boxes were old, dirty, they tossed them out. I said, Dirty or not, I need those boxes to help sell and ship them. They made me new double boxes then and there.\nA UPS truck came while I was there, it was unsettling to see how roughly the UPS dude handled them right in front of the McIntosh staff. I said something, he responded, that\u2019s why we made good double boxes, had no concern.\nMore to discover\nmcintosh mc2505- need some advice\nMcIntosh Font\nAudio Note, Lamm, 1st Sound with McIn...\nBest Speaker For McIntosh MC225 Tube Amp\nMcIntosh MC206 Review\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAntipodes Audio K40\nAurender N10\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"McIntosh","url":"https://forum.audiogon.com/discussions/mcintosh-8"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195462-11799\nEdit\nAnyone ever replaced a tweeter in B&W Formation Duo speaker\nI understand the tweeter Is the same as the 700 series and readily available. Is the removing and replacing hard easy special tools etc\nThanks\njr96aolcom\n08-12-2025  5:29pm\n8 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n141 posts\n08-13-2025 at 12:23am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI don't know how applicable this is, but I have replaced a tweeter on one of my N801s which have a similar looking mounting on the top of the enclosure.\nThe replacement was pretty easy.\u00a0 The rim around the front of the tweeter housing is a twist-lock and once it is removed the tweeter will slide out with a forward pull, enough to disconnect the spade lug wire connections.\u00a0 Once this is done the tweeter itself will simply pull off of the \"tail\" to which it is attached.\u00a0 Installing the replacement is a simple reversal.\nBill\nPost removed\nAug 13, 2025\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n141 posts\n08-13-2025 at 03:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMine was not that expensive, maybe a couple hundred at most.\u00a0 The diamond tweets are a lot higher though.\nBill\nsnecju\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3 posts\n04-29-2026 at 05:06am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHi! I wonder did you ever managed to do it?\ni bought a complete new tweeter horn and it looks like the couplings and fastining is in the bottom. I just can\u2019t figure out how to get the old horn off?\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n141 posts\n04-29-2026 at 04:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPer AI you have to access the tweeter assembly from the underneath by removing the mid/woofer driver first and accessing the tweeter mounting from inside the cabinet.\u00a0 Apparently there is a\u00a0 nut holding the assembly to the cabinet.\nBill\nsnecju\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3 posts\n04-30-2026 at 09:17am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYeah I have heard that too but i doubt it, that\u2019s why I wondered if abyone has actually tried?\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n141 posts\n04-30-2026 at 06:57pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nB&W offers a help line on their website which can probably answer your questions.\nMy 801Ns use a similar mounting for their tweeters and while I haven't removed the complete tweeter unit I have replaced the tweeter itself in one of them and the bullet housing is attached to the midrange unit similarly to the description offered by AI for the Formation.\nGood luck,\nBill\nsnecju\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3 posts\n04-30-2026 at 07:31pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOk thanks, i can always open it up and look ofc.\nMore to discover\nI replaced the donut gaskets in my Ke...\nWhat replaced your Antelope Zodiac DAC?\nMOG to shut down, replaced by Beats M...\nWhen does a 5V4G/GZ32 have to be repl...\nB&amp;W 805s tweeters replaced with d...\nVandersteen Model 2c ii signature\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nAurender N100H\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Anyone ever replaced a tweeter in B&amp;amp;W Formation Duo speaker","url":"https://forum.audiogon.com/discussions/anyone-ever-replaced-a-tweeter-in-b-w-formation-duo-speaker"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198273-112139\nEdit\nLooking to set up  separate circuits for my system\nI currently have the following set up:\nPower amplifier-Bryston 4B3 Cubed\nPreamplifier-Conrad Johnson ET7 S2\nLumin U2 mini streamer\u00a0 with LHY Linear Power supply\nWeiss DAC 204 with a\u00a0 Modwright Linear Power supply\nLooking to separate my system from other appliances. In short, not looking to have my system on the same circuit as my refrigerator. I also listened to a 4 minute You Tube Video by Paul McGowan of PS Audio and he recommended that components should be on separate wires not just separate circuit breakers.\u00a0 He also suggested that one can combine certain components together, for example streamer and dac together, preamp and power amp together. Not sure on how to proceed. Yes I will hire an electrician, but I believe that it will be my responsibility to advise him how to proceed. If I have a specific wish list I am sure he can carry out. Any suggestions would be appreciated.\nkjl1065\n04-25-2026  2:35pm\n18 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n04-25-2026 at 02:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI personally think people overdo it.\nI have one 20 amp separate circuit, (15 amp would do). That isolates it from anything: ref, furnace, ac, blender, tv, whatever.\nI then use one of these\nhttps://furmanpower.com/products/p-1800-pfr\n\"cornerstone is Power Factor Technology, which provides a 45A peak current reservoir\"\nthey often go on sale, I paid much less.\nhttps://www.amazon.com/Furman-P-1800-PF-Conditioner-Rackmountable/dp/B001UNPCBI\nThat means everything is constantly powered thru it\u2019s reserve 45 amp capacity, so it is the filtered power source (IOW, no longer PSEG).\nI want remote system on/off, so I run my sep ckt to my Chase RLC-1, it\u2019s convenience outlet (no filtering or protection yet) powers the Furman, everything is plugged into the Furnan, and, considering the total load, the CD and Reel to Reel stay off until needed.\nbtw, it all goes thru these wires inside the speakers\nand finally thru the very small gauge wires in the driver\u2019s coils.\nvailbrew\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8 posts\n04-25-2026 at 03:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI just did this last week. I used two 20A Hubbell Hospital Grade Isolated Ground Outlets. I ran one 12/2 wire to a separate 20A breaker.\u00a0It was cheaper than one power cable\nand unlike\npower\u00a0cables, I actually think I heard a difference.\nPost removed\nApr 25, 2026\ngoleksiak\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n84 posts\n04-26-2026 at 01:06am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI used this doc in my power upgrade:\nhttps://forum.msbtechnology.com/t/in-wall-power-improvements-for-high-end-audio-systems-its-big/300\n8AWG copper braided hot & neutral 28\u2019 runs, cryogenically treated\n10AWG copper solid ground, cryogenically treated\nFurutech GTX-D NCF(R) Ultimate Nano-Crystal Rhodium-Plated AC Duplex Receptacles, cryogenically treated\nTHQL1120 - GE - 20 Amp Circuit Breakers, cryogenically treated\nThe result was a very noticeable improvement in clarity and microdetails. Well worth the $5k upgrade.\nfastfreight\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,326 posts\n04-26-2026 at 01:27am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI would recommend something a bit between\n@elliottbnewcombjr\n\u200b\u200b\u200b\u200b\n@goleksiak\nRun 10 g dedicated lines, one for digital and one for analog.\u00a0 Electricians will tell you 12g is fine.\u00a0 Use 10.\u00a0 I did this and ended up going back and running two more, so 2 for analogue and 2 for digital.\u00a0 I use less than the 8 outlets that provides but more than the 4 that two runs provide.\u00a0 Don't just run one wire, two is little more trouble.\u00a0 For me:\u00a0 Analog: two Amps and a Preamp.\u00a0 Digital : DAC, Streamer, Clock.\nKeep the audio lines on the same leg of the box so the grounds match.\u00a0 Keep the audio lines OFF the leg with big stuff, especially HVAC.\nLots of outlets to choose from; I was not a fan of the fancy Furutech outlets, and recommend upgraded ones like Hubbel or PSAudio which are reasonable.\ngoleksiak\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n84 posts\n04-26-2026 at 01:47am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n8AWG wire isn't much more expensive than 10AWG - I needed 180' and it only cost $120 more to go from 10AWG to 8AWG. The trick with 8AWG is the only outlet that will natively accept 8AWG is the\u00a0Furutech GTX-D NCF(R) and those are howlingly expensive. You can pigtail 8AWG down to 10AWG for use with a normal outlet and that is acceptable practice code-wise.\nditusa\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,474 posts\n04-26-2026 at 02:52am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have found separating the digital and analog front end gear beneficial.\u00a0I have four dedicated lines with four dedicated circuit breakers for audio only, one for each mono amp, one for analog and one for digital. All four dedicated lines use steel case MC cable 10AWG solid copper. I prefer the MC with metal boxes for better shielding. I would run at least two dedicated lines with two\u00a0dedicated circuit breakers, depending on your total\u00a0power consumption\u00a0requirements.\nMike\ngunderwood\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4 posts\n04-26-2026 at 12:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFor the cleanest poer signal.\nUse an AC to DC to AC converter in the context of audio equipment is most commonly found in High-End Power Regenerators or Double-Conversion Uninterruptible Power Supplies (UPS).\n\u200bWhile a standard power strip or surge protector simply filters the electricity coming from your wall, a regenerator completely rebuilds it to ensure the \"purest\" possible signal for sensitive audio components.\n\u200bHow the Process Works\n\u200bThe conversion process happens in three distinct stages to isolate your gear from the fluctuations of the electrical grid:\n\u200bAC to DC (Rectification): The converter takes the alternating current (AC) from your wall outlet\u2014which often contains \"noise\" from other appliances, voltage spikes, or frequency fluctuations\u2014and converts it into direct current (DC). This stage acts as a gateway, stripping away the messiness of the utility power.\n\u200bThe DC Reservoir (Storage/Filtering): The power sits momentarily in a DC bus, often supported by large capacitors. This acts as a buffer or a \"clean pool\" of energy. In a UPS system, this is also where the battery is connected.\n\u200bDC to AC (Inversion): An internal electronic oscillator and inverter take that clean DC and turn it back into 120V or 230V AC. Because this AC is generated locally by the device\u2019s own internal clock, it is a perfect, steady sine wave at exactly 60Hz (or 50Hz), regardless of what is happening at the wall outlet.\n\u200bWhy It Is Used in Audio\n\u200bAudiophiles and studio engineers use this technology for several key reasons:\n\u200bEliminating Electromagnetic Interference (EMI): The \"AC-DC-AC\" path creates a physical break from the grid. This prevents clicks, pops, or hums caused by refrigerators, dimmers, or computers on the same circuit from reaching your speakers.\n\u200bVoltage Stabilization: Audio amplifiers perform best when they have a consistent voltage. If your hous","title":"Looking to set up  separate circuits for my system","url":"https://forum.audiogon.com/discussions/looking-to-set-up-separate-circuits-for-my-system"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198258-179657\nEdit\nI am panning to upgrade my Panamax 5300. Recommendations?\nMy Panamax 5300 is very old (approximately 20 years +/-), but seems to do the job. We just moved and we had voltage flux\u00a0 which caused the 5300 to shut down three times in the past week. I am hoping it is doing a good job, but I am also concerned that it may be showing it's age.\nI would like to add something like the PS Audio Power Plant 20 but it will not fit in my system (12 inch maximum height). I am considering using two PS Audio Power Plant 12 units (stacked). I need 12 outlets, thus two PP 12's.\nI am also upgrading the circuit from 15 Amps shared to a dedicated 20 Amp circuit. This is being done by an electrician while doing other upgrades including two 50 Amp lines for a kiln and a hot tub.\nWhat alternatives would you recommend to a pair of Power Plant 12 units that will provide a minimum of 12 outlets?\nMy equipment includes: Pass XA25, LTA MicroZOTL Level 3 preamp, Aurender N20, Bricasti M1S2, Technics 1500, SPL Crossover, a pair of Acoustat 1+1 speakers and one Rythmic F12SE sub (the other sub is remote and receives its signal from an SVS Soundpath Transmitter). There are two signal generators supporting the Aurender.\nthriftyaudio\n04-23-2026  3:18am\n9 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nrick_n\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n491 posts\n04-23-2026 at 01:31pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTake a look at the Audioquest Niagra 5000.\u00a0 It checks your boxes with 12 outlets and is a 20amp device.\u00a0 FWIW I think that the Power Plants are 15amp devices.\u00a0 If you're not sure, examine the plug outlet in the rear.\u00a0 15amp has verticle plug tines and 20amp has horizontal.\u00a0 Good luck.\nthriftyaudio\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n205 posts\n04-23-2026 at 02:48pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks rick_n. The Power Plant 12 is a 15amp device. I am meeting with the electrician today to discuss. Do you use Niagra 5000?\nrick_n\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n491 posts\n04-23-2026 at 03:18pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI recently upgraded the power in my listening room to dedicated 20amp service and got the Niagara to make full use of the new amperage.\u00a0 I'm very pleased with the results.\u00a0 Pro move by you to run the new power lines.\nhilde45\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,101 posts\n04-23-2026 at 04:05pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@rick_n\nBefore I spend on a power tool like this,\nI'd like to know if I have problems on my line that a device would have offer an audible benefit.\nCan you tell me how to measure noise on my line so I don't wind up spending on this rather than on something else in my system? Thank you!\nthriftyaudio\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n205 posts\n04-23-2026 at 07:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@rick_n\nIt turns out the PS Audio Power Plant 20 will fit in my system. I will compare it with the Niagra 5000. Did you consider the Niagra 7000?\n@hilde45\nMy electrician is exploring my entire electrical system in my house. It turns out there is a grounding issue in the main circuit breaker box that needs to be addressed, plus he has spotted the variable voltage the 5300 reacted too. He is checking with my power company to see if there is an issue with the transmission into the house.\njfrost27\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n114 posts\n04-24-2026 at 12:54pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMcIntosh MPC1500. I have had one in my system for 15 years.\u00a0 Excellent.\nkatzenjammer27\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n150 posts\n04-24-2026 at 02:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\ndamn, the Niagra is a major jump from what you are currently using ($6k+).\nI had similar voltage issues, not sure the Niagra will help with this. It will cut off to protect your equipment just like your Panamax unit. That is the job is needs to do.\nI have a lot of tubes in my system, so sensitive to voltage swings. When I first built my system, I was blowing rectifier tubes. Did some investigation and found that I had a swing in voltage from 118v in the mornings to 127v at night. I called the power company and they said that this type of swing is within their spec and they can't do anything about it.\nMore research and a couple of rectifier tubes later I installed two variac transformers. These units are around $200 depending on what you get and I use them to monitor and dial down the voltage to the system to keep it in the range my equipment is safe using. It's not a set it and forget it device, it can only raise or lower the current coming out of the unit to your equipment, so it depends on what voltage is coming out of your wall. I usually set it to 116v and make sure I read it before powering up the equipment. (I think I have it dialed in now and really don't have to touch it anymore, mostly listen to the system after 5:00 pm so it's set for that voltage). These things have saved my sanity. I got ones with digital readouts so it's just a glance at the unit to see if I'm safe to turn on my stuff.\nthriftyaudio\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n205 posts\n04-24-2026 at 02:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@katzenjammer27\nThanks for the detailed information. The only tube equipment I have is the LTA preamp, but I am concerned for all of it. I will look into the variac transformers, although I would prefer a set it an forget it solution.\nThe problem with the Panamax is that after it shuts down several times the feature weakens until it no longer works. Over the past 20 years is may have shut down half a dozen times prior to the past week. My electrician recommended we leave the system off until the dedicated 20 amp line is in, and we receive confirmation from our local power coop regarding the swings in voltage.\nrick_n\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n491 posts\n04-24-2026 at 04:25pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nhilde45\nTo answer your question, I don't know how to or or have the tools to measure the quality of the power coming into my system.\u00a0 Over many, many years I've decided I don't care about measurements and specs because I can't hear them.\u00a0 I've been fooled too many times going by specs and measurements expecting something and not hearing it.\u00a0 My evaluation method is by ear only.\u00a0 So in that spirit, I spent an hour last night to see if the Niagara 5000 was actually doing anything.\u00a0 I took my large amp off the PC and plugged it directly into a 20amp outlet.\u00a0 I left the pre, streamer (N20 like the OP), and DAC feeding off the Niagara and only changed the one variable (amp).\u00a0 To simplify this test I used streaming only since it seems that is the OPs preference.\nWhat I found with no conditioning to the amp is that the sound stage actually got wider and taller and the individual instruments and voices gained in size.\u00a0 While doing this the soundstage got less deep.\u00a0 In some rock tracks it sounded like the vocalist was sitting on the drum riser rather than at the front of the stage.\u00a0 Also, while the things got bigger side to side they lost some focus esp. with acoustic","title":"I am panning to upgrade my Panamax 5300. Recommendations?","url":"https://forum.audiogon.com/discussions/i-am-panning-to-upgrade-my-panamax-5300-recommendations"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198190-210410\nEdit\nWhat is this graph saying\nHi all,\nI would like to ask for help in understanding a graph.\u00a0\u00a0I was watching a youtube video that discusses speaker and driver sizes.\u00a0 They referenced this facebook site:\nhttps://www.facebook.com/MyRoom.Acoustics/\nSpecifically, this picture:\nhttps://www.facebook.com/photo/?fbid=2472585536170944\nI've studied this picture for a bit and am still unsure what it is telling me about the speaker vs listening level.\nIf I look at the SM2 (7\") is it saying that at 85db, the 7\" driver will only be able to reproduce 40Hz?\nAm I totally missing what it is saying?\nThanks for any help,\nSteve\nsjpdallas\n04-15-2026  3:17am\n2 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n04-15-2026 at 04:30pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI didn\u2019t read anything on the site, or about the graph, but apparently It\u2019s saying:\nfor momentary peaks, you should have enough power for +20db.\n(more wpc needed for speakers with low sensitivity, and watch for low impedance dips)\nand, it is showing, a 13\" woofer would go down to 43hz (that\u2019s why people add subs for lower frequencies), and a 7\" would go down to 118hz (even more need for sub(s).\nKeep in mind, there are two of each 13\" or 7\" in a stereo pair.\nWhat SPL \u2019in your space\u2019 reaches your ears \u2019at your listening location\u2019 (also, how relative to other frequencies) can be determined with an inexpensive SPL meter, and a CD with test tones.\nMake sure the SPL meter has a bottom hole for tripod mount, so you can set it at ear level in your spot.\nthis one has a tripod hole, many do not\nhttps://www.amazon.com/Decibel-Digital-Rechargeable-Frequency-Measurement/dp/B0DJT42M9K/ref=sr_1_8?sr=8-8\nif you know how, you can download and make your own cd of test tones\nhttps://www.wavecor.co.uk/testdisk.html\nI use this 'Amazing Bytes' CD, but it has gotten expensive\nhttps://www.discogs.com/release/7290000-Various-Amazing-Bytes\nsjpdallas\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4 posts\n04-18-2026 at 11:06pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThank you @\nelliottbnewcombjr\nMore to discover\nLumin X1 latest Review like we have b...\nNew here and saying HI!\nWhat is Floyd Toole saying about extr...\nModernists Unite, or: saying no to ro...\nWhat is this graph saying\nAurender N100H\nAurender N10\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"What is this graph saying","url":"https://forum.audiogon.com/discussions/what-is-this-graph-saying"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198220-108079\nEdit\nMQA QRONO\nHello everyone. \u00a0Any users of \u00a0MQA QRONO. \u00a0I will not voice my opinion. \u00a0Just wondering what actual users think of it.\naudiovicker\n04-18-2026  8:43pm\n0 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nMore to discover\nMQA QRONO\nMQA QRONO\nBricasti M5\nAurender N10\nVolumio Primo Plus\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"MQA QRONO","url":"https://forum.audiogon.com/discussions/mqa-qrono"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n168538-164116\nEdit\nHow to change voltage on Esoteric K05X? Or is step down transformer ok?\nI would be grateful if somebody could give me some advice on the following, please.\nAround five years ago I bought in Japan an Esoteric K05X Sacd player (Japanese voltage). Now I have moved to South Korea and the voltage here is 220V. I am running the unit on a voltage step down converter that I brought over from Japan.\nmy questions are:\n1. in terms of sound deterioration, how \u2018bad\u2019 is it to use a voltage step down transformer in general?\n2. I wonder whether the Esoteric K05X can be modified to run on 220V? If so, how? Does a dealer do this? Can it be done by somebody who knows electronics, ie is it a matter of doing \u2018only\u2019 some soldering?\u00a0\u00a0I looked into the unit and I could see the ring transformer and on the main board some writing showing 250V.\nThanks for your help!\ncheers,\nSteffen\nsteffeninseoul\n08-07-2021  9:27am\n7 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nmillercarbon\nDetails\nDiscussions\nPosts\nThis discussion\n12,531 posts\n08-07-2021 at 08:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNot bad at all. My whole system is on a step down transformer, from 240 to 120, and I am in the US. Vast majority of power conditioners are based on transformers, only difference being they are 1:1 not stepped up or down.\nThe modification you are talking about can work only if Esoteric uses a transformer with wires coming off different taps to be used in different countries. In that case they would hopefully be able to tell you which wires to use, and then it could be as simple as soldering a couple of wires. Or if you could find a circuit diagram, but those are often times hard to come by, proprietary information and all.\nimhififan\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,260 posts\n08-09-2021 at 02:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n1. in terms of sound deterioration, how \u2018bad\u2019 is it to use a voltage step down transformer in general?\nNot all step down transformer created equal, A good one will not degrade sound\nquality\n, in some cases, an isolated step down transformer can improve SQ.\n2. I wonder whether the Esoteric K05X can be modified to run on 220V? If so, how?\nDepends on the model, some model just simply move connectors, some need to replace transformer, ask your dealer for advise.\nI looked into the unit and I could see the ring transformer and on the main board some writing showing 250V.\nCan you provide a link to some close up photos?\nfoolishman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n80 posts\n12-01-2024 at 04:15am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@imhififan\n2. I wonder whether the\u00a0Esoteric\u00a0K05X can be modified to run on 220V? If so, how?\nDepends on the model, some model just simply move connectors, some need to replace transformer, ask your dealer for advise.\nHow about the Esoteric N-01XD-SE? Move connectors or replace transformer?\nThank you in advance.\ngomusic\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1 posts\n04-11-2026 at 04:36pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@imhififan\nCould you please advise on how to convert the voltage of the Esoteric N-05XD from 100V to 240V?\nAfter inspecting the inside of the unit, I noticed that the PCB near the connector is labeled \u201c100 / 220 / 240.\u201d\nIn this case, would it be correct to simply remove the jumper (pin) from its current position and move it to the 240V setting?\nI would appreciate your confirmation. Thank you in advance.\nhttps://imgur.com/a/xotD3Fa\nimhififan\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,260 posts\n04-14-2026 at 04:06am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@gomusic\nSorry I do not have any firsthand experience regarding voltage conversion for the Esoteric N-05XD. However, drawing upon Accuphase's practices regarding voltage conversion\u2014if you need to switch the operating voltage from 100V to 230V, it may requires replacing the auxiliary transformer.\nTherefore, I recommend that you contact your local Esoteric distributor directly for assistance.\nw3ua\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3 posts\n04-15-2026 at 09:33pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI can't say anything about older devices, but N-05XD, E-2 and K-03XD have the same arrangement -- to convert between voltages, you remove the top cover (by unscrewing four top side bolts) and move the plug to the voltage you need. That's it. As for the older Accuphase devices, there is always a way to rewire the transformers, but it requires some soldering. I converted quite a few older Accuphase devices from 100 to 120 V, each conversion usually takes about 20 minutes, of which18 minutes is a careful analysis of the existing arrangement, and 2 minutes conversion itself. YMMV, of course. Do it on your own risk.\nimhififan\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,260 posts\n04-18-2026 at 02:10am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@w3ua\nThank you for sharing! This is extremely helpful for members looking to switch the main voltage on the N-05XD, E2, and K-03XD models.\u00a0Kudos!\nMore to discover\nChange CJ Premier 12 to XS ??\nCD Changer w/ Variable Analog Out ?\nBAT Preamp Output Design Changes - Why?\nMega Changers\noil change t/t\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nFocal 36 MONTH FINANCING\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"How to change voltage on Esoteric K05X? Or is step down transformer ok?","url":"https://forum.audiogon.com/discussions/how-to-change-voltage-on-esoteric-k05x-or-is-step-down-transformer-ok"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197984-76486\nEdit\nmeasurement software / sound card recommendations\nI've been using an ancient macbook pro with an external M-Audio firewire 410 soundcard paired with R+D software (which has to run in windows) for decades.\u00a0 It is an odd setup perhaps, but it has worked for a long time.\u00a0 However the rig has finally broken down on me, so I'm in the market for a new combo to help in listening room set up -\u00a0 primarily freq eq, but reflection delays, absorber placement, RT60 measurements, etc.\u00a0 Its been so long since I've researched this space I wanted to reach out and see what people are recommending these days.\u00a0 I've got relatively new mac and windows machines, so I'm OS agnostic.\u00a0 I'd like to continue to use my existing calibrated Behringer ECM8000 mic.\nWhat's everybody using?\nshiner01\n03-28-2026 11:50pm\n9 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nkofibaffour\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n726 posts\n03-29-2026 at 02:54am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI use an\u00a0Earthworks M23R mic plugged into\u00a0RME Babyface Pro FS which does the measurement via DIRAC ART on my PC\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n03-29-2026 at 03:08am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou'd be surprised how little you need.\u00a0 Measurement mics are usually USB anyway so you don't need much of a soundcard.\nI'm in the minority but I really like OmniMic by Bill Waslow.\u00a0 Maybe because he's a contributor on DIYaudio and a really nice guy who also made XSim.\nIf you don't care which, I'd say go with Room EQ wizard and a decent mic from miniDSP.\nshiner01\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n27 posts\n03-29-2026 at 10:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks.\u00a0 I've been reading up on the MiniDSP mics.\u00a0 I assumed REW would be the suggested software.\u00a0 Back when I selected R+D (again, decades ago) my\u00a0 research led me to believe this was the more accurate software, but I can see that REW has come a long way since then.\u00a0 I just need to decide whether I want to keep it simple (USB mic) or get another ext audio interface with phantom power and keep using the condenser mic.\nkevinzoe\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n212 posts\n04-09-2026 at 11:00am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@shiner01\nI second the use of OmniMic software.\nEast to learn via intuitive interface, good looking charts (except their waterfall), and data that is saved as text files (including early reflections which REW doesn\u2019t make available from what me and others can tell) for sharing or deeper analysis.\nIf anyone needs help deciphering the measurements then contact me.\nshiner01\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n27 posts\n04-09-2026 at 02:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI got the miniDSP UMIK-1 rather than getting a new ext sound card.\u00a0 I'll look into OmniMic.\u00a0 Thanks\nkevinzoe\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n212 posts\n04-09-2026 at 09:43pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@shiner01\nOmniMic software ships with its own calibrated USB mic which must be used. \u00a0Any other kind of mic won\u2019t work with OmniMic.\nshiner01\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n27 posts\n04-10-2026 at 12:38am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nwell, REW it is for me then :)\nkofibaffour\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n726 posts\n04-13-2026 at 05:03am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@shiner01\nFOLLOW THIS -\nhttps://www.audiosciencereview.com/forum/index.php?threads/taking-and-interpreting-measurements-with-rew-free-ebook.66771/\nshiner01\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n27 posts\n04-13-2026 at 02:10pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks.\u00a0 I'll take a look.\u00a0 I've taken my first set of measurements with the UMIK-1 and REW and while the software seems to have more features, I'm disappointed with the results so far.\u00a0 My freq response looks very different between the two set ups despite having calibration files for both mics, good SNRs etc.\u00a0 I have some debugging to do.\nMore to discover\nIn Room Frequency Response Measurements\nImpedance - The most ignored and usef...\nI Am Tired of  Bogus Measurements\nMeasurement Bias\nA Few Turntable Measurements using th...\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nRSX MUSIC SERVER RSX MUSIC SERVER\nAntipodes Audio K40\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"measurement software / sound card recommendations","url":"https://forum.audiogon.com/discussions/measurement-software-sound-card-recommendations"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198109-149317\nEdit\nVinshine Kinki Studios Tai Hang\nContext:I run my system on a dedicated power spur with an akiko audio fuse and Isotek Vision G2 supporting two Acoustic Revive Rtp4 strips for low and high voltage clients.The Wavac power amp runs through a Verafi Swiss Digital Fuse box, the Innuos streamer has a hifi tuning fuse.and the DAC, Etherregen and UiP are driven by a Sean Jacobs DC3/4 power supply with 18v, 12v and 5v rails.\nSo a lot of effort having gone into clean power by all accounts. All the more surprise when replacing the Isotek by the Tai Hang: The increase in dynamics, transparency and sound stage specigicity is phenomenal and delineation of individual instruments exemplar. Very highly recommended.\nantigrunge2\n04-06-2026  7:12pm\n1 response\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ngarebear\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,281 posts\n04-07-2026 at 01:19am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBonziii!\nMore to discover\nSpeaker cables for paradigm studios\nOld Paradigm studios against new moni...\nVinshine Kinki Studios Tai Hang\nIs Krell 400xi enough to power Revel ...\nRecording Quality and Different Studios\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAurender N10\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Vinshine Kinki Studios Tai Hang","url":"https://forum.audiogon.com/discussions/vinshine-kinki-studios-tai-hang"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n187022-6156\nEdit\nI\u2019m getting a hum in my integrated tube amp and it\u2019s bugging me alot\nHi - first of all, here\u2019s my system:\n- Rogers High Fidelity EHF-200 mkII integrated tube amp\n- Magico A5 speakers\n- Merging NADAC + Power DAC\n- Audience T2 power conditioner\n- Purist cabling\nI love the sound of my system. BUT\u2026\u2026.I have been noticing a hum after about 10 minutes of use from my amp. There are two switches on the amp - POWER & OPERATE - that need to be turned on in order to listen to music. (The Power switch needs to be turned on about 30 seconds prior to switching on the Operate switch). With both KT150 and KT88 tubes (all matched), after about 10 minutes I hear an audible hum from the amp that is apparent from my listening position about 10 feet away. If I turn off the OPERATE switch, the hum disappears (but of course, then I can\u2019t listen to music). I have contacted Roger (the company owner) who said it was noise from old tubes. But my KT88\u2019s have less than 100 hours on them and they hum as well as the KT150\u2019s (maybe a few db\u2019s softer than the 150s\u2019).\nDoes anybody have any ideas about what causes this and how it might be fixed? Is this an issue that is endemic to tube amps? FYI - if this requires new tubes, then I need to switch back to SS as I\u2019m not willing to invest approx $800/year in new tubes.\nI turn to the great wisdom of this forum to help.\nThanks - Matt\nmwsl\n11-10-2023 12:18am\n28 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nstereo5\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,728 posts\n11-10-2023 at 12:52am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI would call the company back and tell them what you told us.\njacobsdad2000\nDetails\nDiscussions\nPosts\nThis discussion\n433 posts\n11-10-2023 at 12:57am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have had tube amplification for years from several different manufacturers and never had any noticeable buzz or hum, not from my listening position. Had a couple that had a very slight transformer hum but you had to have your right next to the amp. How old is your Rogers?\u00a0 Is your amp plugged into your conditioner?\n2psyop\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,944 posts\n11-10-2023 at 01:22am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt could be a bad transformer. Also it could get loose in the mount. This is about the time when you find out how \"good\" of a company Rogers is. I have often expressed my viewpoint that service and support is an often overlooked consideration when buying any audio product. It\u2019s not just perceived performance or reviews. If it's a bad tube, you will find out if you swap them out. Or find a tube tester to actually test them. Best of luck...\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n11-10-2023 at 01:38am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAny hum is not a characteristic of tube amps. Definitely do not give up on tube amps. I have more than 15,000 hours on tube equipment and have had to replace one tube that misbehaved. Typically, you get at least 2 - 3,000 hours between tube changes. The benefit really outweighs the risks.\nIt is probably a malfunctioning transformer (@2psyop +1 ) or something else (. Definitely contact Rogue. While I am not a fan of Rogue, they should point you in the right direction.\nroxy54\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,245 posts\n11-10-2023 at 02:57am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nRogers brags about a lifetime guarantee. It seems like he blew you off rather quickly. I would call back as\n@stereo5\nsuggested.\ndeep_333\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,544 posts\n11-10-2023 at 01:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHuh? 16000 dollars for this humming junk?! (I just looked it up). Return quickly to botcher Roger and get your money back.\nThereafter, get some smooth liquidy class A solid state Pass Labs to keep that Magico well behaved.\nroxy54\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,245 posts\n11-10-2023 at 02:22pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThat was uncalled for\n@deep_333\nzlone\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,431 posts\n11-10-2023 at 02:46pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNot an expert, but you may have some DC on your line. You might try one of these:\nhttps://avahifi.com/products/humdinger-dc-line-blocker\nThere are other options, this one is fairly inexpensive.\ndeep_333\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,544 posts\n11-10-2023 at 04:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@roxy54\n#1 He doesn\u2019t have the right amp for that speaker (not to mention a whack a doodle hummer for the \u2019small price\u2019 of only 16k!)...could be that he went tubes after the Magico started brutalizing ears. Nevertheless, the magico needs serious space heater liquidness to find the balance for --> [not held back + not tearing ears off].\n#2) PassLabs will fix anything for free for the life of the amp (best customer service and service record in the history of this biz, i.e., gotta give credit when due).\nP.S i don\u2019t even own a Pass currently (lest i came off as a Pass fan boy). But, that\u2019s the kind of amp that tends to work for Magico guys, ime.\nroxy54\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,245 posts\n11-10-2023 at 05:36pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@deep_333\nThat all may or may not be true, but the way you addressed him made you sound like a thug.\ndeep_333\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,544 posts\n11-10-2023 at 07:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@deep_333\nThat all may or may not be true,\nbut the way you addressed him made you sound like a thug\n@roxy54\n, No...read it again, you invented it all in your head...But, that sly passive aggressive forum tactic of yours wanting to call me a \"thug\" and get away with it....Well...the way you addressed me made you \"sound like a passive aggressive li\u2019l ho\". Now, go cry a river to you know who...\nroxy54\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,245 posts\n11-10-2023 at 09:06pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAnd now you proved it.\n2psyop\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,944 posts\n11-11-2023 at 11:16am\nCopy Comment URL\nReport Comment\nEdit\nDelete\ndeep_333\nYou are the reason people stop coming to forums. Arrogance and stupidity just pour out of your mouth. You strike me as the type of person that just likes to shock people with your comments to get attention, like a child. My guess is that in reality, you're an idiot.\ntablejockey\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,431 posts\n11-11-2023 at 04:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nRecord a video with your phone describing symptoms and send it to the manufacturer.\nRogers is supposed to be a customer focused operation.\nIs deep_333 ...you know who?\nLooks like the new guy to ignore.\nroxy54\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,245 posts\n11-11-2023 at 08:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@tablejockey\nmwsl\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n66 posts\n11-12-2023 at 12:28am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSorry for the delayed reply\u2026\u2026I appreciat","title":"I\u2019m getting a hum in my integrated tube amp and it\u2019s bugging me alot","url":"https://forum.audiogon.com/discussions/i-m-getting-a-hum-in-my-integrated-tube-amp-and-it-s-bugging-me-alot"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n198076-2308\nEdit\nHigh pass filter\nMy goal is reduce a vertical axial mode at 60Hz produced from my main speakers. \u00a0A JL CR1 did the job but produced too much distortion. I have looked at passive and active line-level crossover and filter options, including DEQX. I am interested in an do-it-myself capacitor option like the one on GR Research website but 6db/octave is too shallow. I need a second order at least. Has anyone made a passive high pass filter second order or higher? I believe it is two capacitors in series with the first one ten times the value as the second. My amp is 30Kohm input impedance. I do not if a resistor is necessary. As I type this I have a sense I am going down the wrong rabbit hole. The relatively low cost and ability to alter it is compelling, though. Thanks for any help.\nohlala\n04-04-2026  3:42pm\n7 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nyogiboy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,232 posts\n04-04-2026 at 10:40pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHow about this? I used this years ago with great results!\nhttps://hsuresearch.com/collections/accessories/products/high-pass-filter\nknotscott\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,430 posts\n04-05-2026 at 01:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI know you want a steeper slope, but have you given a first order inline high pass a try?\u00a0 It's much simpler. I used a silver mica cap, and it works well and sounds wonderful for my application.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n04-05-2026 at 08:18pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nmode at 60Hz\nWell the correct answer is a parametric EQ honestly. Even better with bass traps in the right location.\u00a0 A single cap HP filter is an excellent idea when you are bi-amping but here it's going to just make your system sound too lean.\nMy suggestion is get an inexpensive miniDSP and try it.\u00a0 Or if you stream with Roon it has DSP filtering built in.\nIf you are just dying to solder something try an LC in series, I think 0.7mH and 100uF could work, I may have done the math wrong, with a variable resistor around 30k-100K pot around the whole thing so you can adjust the dip depth.\u00a0 You wont get what you really need which is variable filter width but hey, worth playing with.\ndeep_333\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,544 posts\n04-05-2026 at 09:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nA approximately 9 ft ceiling would produce a strong 60hz null at the 4.5 ft height.\nDo you have a sub?\nPut a sub on the floor by the front wall.\nGet a 2nd sub, a in-wall sub like this sub from SVS or similar and put it on your ceiling by the back wall.\nhttps://www.crutchfield.com/p_9463KIWDSS/SVS-3000-In-wall-Dual-Subwoofer-System.html\nWith correct phase adjustment, that null will be gone. You can't peq your way out of nulls.\nYou will get rid of heightwise modes, lengthwise modes and widthwise modes in\u00a0 your room by correctly placing just that one sub on the floor and one sub on the ceiling.\n@ohlala\nwrote\nMy goal is reduce a vertical axial mode at 60Hz produced from my main speakers.\nohlala\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,281 posts\n04-05-2026 at 11:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThank \u00a0you all for the thoughtful responses. I very well may try a first order filter and will looking to an LC circuit like Erik suggested. Those inexpensive RCA filter plugs would be a simple experiment. The Hsu could also be worth trying, also inexpensive.\nI have a pair of JL fathoms which do not excite that mode. The issue the main speakers. I have done hundreds of measurements and changes over the course of three different speaker pairs. The CR1 fixes the 60Hz anti-node issue. I sold it due to the distortion. A crossover will do the job, but I am trying to not pay the penalty for using one.\nIn the past I raised a pair of much lighter REL subs halfway up the wall. It did help. It is a good idea, but I do not want to do raise a 130lb sub off the floor in my living room. I have acoustic treatment including multiple bass traps. For my own sanity I am not going reinvent that wheel ;). That was a long road. Thanks again\nmashif\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n505 posts\n04-06-2026 at 01:00am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy room has the same issue. I solved it by using a Marchand 24db HPF at 80hz on the mains. My sub, sitting on the floor, takes over from there. I use an SVS 2000 PRO which has excellent DSP built in to tweak the low end as needed. If your room is large enough, 2 subs are needed.\npinwa\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n341 posts\n04-06-2026 at 03:45am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou should really just build the GR Research High Pass filters that go between your preamp and amp first before you start mucking around with more expensive/complicated solutions.\u00a0 You might find that they actually provide exactly what you are looking for. I borrowed a JL CR1 and bought a Marchand and Sublime K235 and ended up using the GR Research filter combined with two SVS SB17 subs.\u00a0 By rolling off the lows for the main speakers and then tweaking the subs with XO point, phase and PEQ I achieved what I think is exceptional sound.\nhttps://gr-research.com/hi-pass-filters/\nThe GR Research filters are very easy to build, especially if you are using RCA connections.\u00a0 I used XLR and that is more time consuming and you need to make sure the caps are closely matched.\u00a0 Russian Paper in Oil capacitors are cheap and sound good.\u00a0 Russian teflon are more expensive and sound better.\u00a0 Auricaps do not sound that good.\u00a0 I have some expensive teflon caps coming that I am looking forward to trying.\nAlso, that 60 Hz peak is likely a room mode so playing around with position and bass traps might help.\nMore to discover\nMarantz SA-7S1 filters and noise shaper\nReview: ISO 1100va AC filter\nReview: DIYcable Jon Risch Line filte...\nRumble Filter for my Linn LP-12 setup ??\nBybee quantum filters for speakers\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nVolumio Primo Plus\nAurender N100H\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"High pass filter","url":"https://forum.audiogon.com/discussions/high-pass-filter-2"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197547-86\nEdit\nNeed Qualified Tech for Amplifier Repair - Indianapolis/Chicago Area\nNeed Technician to evaluate and repair a BAT solid-state amp.\nSpeaker jumper dislodged and caused blown fuses when amp turned on.\nNew BAT service center now open in L.A. area, but shipping/insurance cost\nprohibitive. Willing to drive to major city close to Indianapolis\n(Chicago, Cincinnati, Columbus, etc.) but prefer Indy.\nMay be a simple fix, but several attempts at replacing fuses have failed.\ndweller\n02-14-2026 12:45am\n11 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nabnerjack\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n302 posts\n02-14-2026 at 01:41pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMaybe:\nhttp://www.unclealberts.com\nI don't know anything about them, but it might be worth checking them out.\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n02-14-2026 at 01:50pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nwhat a fun web site, have a look everyone\nhttp://www.unclealberts.com\nat the end, check the names in the client list\njayctoy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,659 posts\n02-14-2026 at 02:02pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDeltronics Chicago.\ndweller\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,950 posts\n02-14-2026 at 05:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks guys! You wouldn't believe what I've gone through the past four months. Just pray your equipment never needs fixing. Please keep the suggestions coming!\ndweller\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,950 posts\n02-14-2026 at 07:57pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nJust talked to \"Uncle Albert's\": \"Sorry, I don't work on Solid State amps.\".\nfiesta75\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,548 posts\n02-14-2026 at 08:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSorry, I don't have any suggestions for your area. Keep looking and posting on various audio sites. I've had good luck finding reputable people on Audiokarma for one.\nmroverkill\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6 posts\n03-31-2026 at 03:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI am in Minnesota but that is a bit far.\ndweller\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,950 posts\n03-31-2026 at 05:25pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nStill waiting for \"Pop\" to fix my amp. This is such a heartbreak all-the-way-round. How can you design a $9000 (pre inflation) amp that can't defend itself from the most common source of accidental failure? True, this is the finest sounding amp I've owned, but getting it fixed is an absolute nightmare.\nPost removed\nMar 31, 2026\nPost removed\nMar 31, 2026\ndweller\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,950 posts\n04-04-2026 at 11:12pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSucces! Picked up my repaired amp today (after driving an hour in blinding rain)!\nTotal cost: $640. Sending to factory repair center (SF Valley, CA) would have cost $600 each way (insured) not including cost of repair.\nCan't wait to try it out!\nMore to discover\nPreowned Wilson Audio Chicago Dealer\nCouple good finds for repairs in Chic...\nstream-official-chicago-bears-vs-san-...\nanyone attending AK fest from Chicago?\nHigh End Stereo Repair in Chicagoland?\nAurender N10\nVandersteen Model 2c ii signature\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Need Qualified Tech for Amplifier Repair - Indianapolis/Chicago Area","url":"https://forum.audiogon.com/discussions/need-qualified-tech-for-amplifier-repair-indianapolis-chicago-area"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197951-109912\nEdit\nI built a music discovery tool because everything else kept failing me\nHi, Alessandro here.\nI'm a developer and an audiophile and I use Qobuz and Tidal as my music streamer and honestly they suck.\nI search for artists similar to Bill Evans and get back something with a guitar and a drum machine. I search for John Martyn and get Ed Sheeran.\nSo I got frustrated and spent the past year building something different.\nBasically, you enter a seed artist and instead of matching sonic similarity, it maps what fans of that artist actually listen to. A completely different discovery engine that gives you completely different results.Then in one click it creates a permanent, editable playlist directly in your Qobuz or Tidal library. It shows up in Roon, Audirvana, Eversolo, or any audio system connected to Qobuz or Tidal automatically. No syncing, no downloads, nothing. It's just there, ready to play.\nYou own it, edit it, keep it.\nI'm launching this month.\nComing soon page at sonicoracle.ai if you want on the waitlist.\nHappy to answer anything.\npanyc77\n03-25-2026  7:49pm\n7 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nmofimadness\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,591 posts\n03-25-2026 at 08:06pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCool.\u00a0 Just signed up.\nAnxious to try the free trial to see how to works.\nThanks for all the hard work...\npanyc77\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n108 posts\n03-25-2026 at 09:54pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWelcome aboard. The free trial gives you a full discovery session, 25 artist cards, no account needed. Just enter a seed artist you love and let it run. Would love to hear what you think.\nAlessandro\ndrlou77\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n154 posts\n03-26-2026 at 06:36pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@panyc77\nThanks.\nmofimadness\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,591 posts\n03-26-2026 at 06:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nhttps://sonicoracle.ai/\nmofimadness\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,591 posts\n03-26-2026 at 07:14pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI noticed that WiiM wasn't listed?\nPretty popular devices...you might want to add it, if you can.\ndrlou77\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n154 posts\n03-27-2026 at 12:30am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@mofimadness\nThanks\npanyc77\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n108 posts\n03-27-2026 at 06:36am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGood call. WiiM works perfectly with Sonic Oracle. You create the station, it lands in your Qobuz or Tidal library, and WiiM picks it up instantly. Adding it to the list.\nAlessandro\nMore to discover\nNeeded to start a new thread, because...\nYou can't hear dialogue because it do...\nAre Ohm-Walsh micros and 1000 series ...\nMaybe Leaving SET for Solid State bec...\nChose this because most read. topic, ...\nAyon Audio S-10IIxs\nVandersteen Model 2c ii signature\nAntipodes Audio K40\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"I built a music discovery tool because everything else kept failing me","url":"https://forum.audiogon.com/discussions/i-built-a-music-discovery-tool-because-everything-else-kept-failing-me"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197911-194514\nEdit\nAuralic Altair G2.1 SSD Upgrade\nI have this wonderful streamer but he didn\u2019t come with hard drive .\nI have new BX 500 Crucial SSD for upgrading\u2026\u2026\nunfortunately, I found out that my unit doesn\u2019t have needed bracket or cables. I need to get the mounting kit. I would be very very happy if someone would guide me how to do it eventually maybe somebody has this available. Thank you so much .\nwinalovski\n03-21-2026  1:45pm\n3 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n03-21-2026 at 03:05pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nhttps://brisbanehifi.com.au/products/auralic-altair-hdd-installation-kit?srsltid=AfmBOoqg6bupx9iwBzj5b_3LoPOQaRFSyystUDlPNzUZa391k-ikbUch&utm_source=chatgpt.com\nFor Kit.\n3. Installation overview (very straightforward)\nOnce you have the kit, the process is surprisingly simple\u2026 this is not a \u201cMac Mini nightmare\u201d situation.\nSteps:\nUnplug unit\nFlip over and remove bottom plate (Torx screws)\nAttach SSD to bracket\nConnect internal cable (only fits one way)\nMount bracket into chassis\nReassemble\nThat\u2019s it mechanically.\nThen:\nPower on\nLightning DS app \u2192 Storage \u2192 Format drive\nMany users describe it as essentially \u201cplug and play\u201d once the kit is present.\nThank ChatGPT.\nfastfreight\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,326 posts\n03-22-2026 at 01:07am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWorks the same to plug in an external USB Hard drive...this is how I do it at my vacation home with an Auralic Altair G2.1.\nwinalovski\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n12 posts\n03-22-2026 at 01:48am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThank you so much for the information!\nHope it could be shipped to New Jersey?\nMore to discover\nAnyone know of a DC cable upgrade for...\nAuralic Aries G2.1 fuse size???\nAuralic- gone for good?\nAuralic Aries G1.1\nWhat to buy....Auralic Aries, Sony Ha...\nFocal 36 MONTH FINANCING\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Auralic Altair G2.1 SSD Upgrade","url":"https://forum.audiogon.com/discussions/auralic-altair-g2-1-ssd-upgrade"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197841-2195\nEdit\nWhat is this filter (puzzled)?\nI'm sorting through my stuff and found a pair of XLR male/female joined modules that are marked \"-17dB, 3.3k/20k\".\u00a0 I wish I could post an image from my computer, but I would need to first place my image online - yech!\u00a0 In any case - it's a single Neutrik casing, one end male one end female (kind of like \"flow-thru\" style), marked as described.\u00a0 I don't know who made it and what exactly it is.\u00a0 The -17dB suggests it's an attenuator, but I don't know what the other numbers mean. Can anyone advise?\u00a0 Thanks in advance!\npeter_s\n03-13-2026  6:35pm\n8 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ndekay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,249 posts\n03-13-2026 at 06:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPerhaps for attenuating a microphone, or maybe a compression tweeter?\nDeKay\npeter_s\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,443 posts\n03-13-2026 at 07:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPerhaps.\u00a0 What would be the 3.3k/20k mean?\u00a0 The range to which the attenuation is functional?\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n03-13-2026 at 08:02pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt could be the impedance ratio expected.\u00a0 3.3k on one end, 20k on another.\u00a0 Open it up, if you see a mini transformer and nothing else, that's all this is, impedance/output matching.\npeter_s\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,443 posts\n03-13-2026 at 08:45pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@erik_squires\ngood suggestion!\u00a0 The two barrels are too tightly joined to break apart, but I suspect that you are right.\u00a0 TBH, I don't even know how to design an attenuation circuit!\u00a0 I had assumed a simple resistor on both legs of the balanced device. But that doesn't line up with the impedance values if that's what they are. So, a mini-transformer would provide attenuation???\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n03-13-2026 at 09:46pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nA mini transformer could provide step up/step down features.\u00a0 Just like they use in expensive phono preamps. :)\npeter_s\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,443 posts\n03-14-2026 at 03:15am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@erik_squires\nso step down would pertain to attenuation?\u00a0 Excuse my ignorance here!\nfiesta75\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,548 posts\n03-15-2026 at 01:55am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI would go with the attenuation idea. A DVM might give you some idea. Also check to see if there is any resistance between input and output, that will tell you if it's isolated.\nboomerbillone\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n402 posts\n03-19-2026 at 07:57pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHello\npeter_s\n!\u00a0 It could be a filter to put in a line to lighting equipment, special effects gear, fog machines, etc. to prevent them from being triggered from sound (audio) signals on the same feed to remote amps or other gear. In older days, sub-sonic tones were used to trigger slide projectors and other things.\nMore to discover\nMarantz SA-7S1 filters and noise shaper\nReview: ISO 1100va AC filter\nReview: DIYcable Jon Risch Line filte...\nRumble Filter for my Linn LP-12 setup ??\nBybee quantum filters for speakers\nAyon Audio S-10IIxs\nAyon Audio S-10IIxs\nAurender N10\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"What is this filter (puzzled)?","url":"https://forum.audiogon.com/discussions/what-is-this-filter-puzzled"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197854-136680\nEdit\nWhy even full range speakers need subwoofers!\nThis question comes up all the time. Do I still need subwoofers? This video is the best explanation I've heard.\nTelling people they don't need a sub is NOT good advice and it's repeated on audio forums all the time.\nPlease, take a listen as to why it's important.\nI would add that it's important to use a high pass filter to the main speakers for optimun benefit.\u00a0 ( many sub amps already have built in high pass filters for this reason)\nhttps://www.youtube.com/watch?v=nkE5Sisu8-8\ngdaddy1\n03-15-2026  2:04am\n6 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ndavegood\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n24 posts\n03-15-2026 at 08:38pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAgreed, although I have no way to high pass the mains. I have blocked the ports on my Elipson 24F's and low passed the two subs at 45hz (12db). The mains are rated down to 30 hz (-3db) before extension and, in my treated room, sound better than without the subs. Still learning......\nknotscott\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,430 posts\n03-16-2026 at 02:03am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYeah, he pretty much nailed it.\nNearly 3 years ago, I added a separate amp and active low pass crossover to drive my woofers and the high level inputs of my active subwoofer, and installed an inline high pass filter between the preamp and tube amps that drive the midbass/tweeters.\u00a0 That move not only improved the quality of bass, extension, dynamics, and control, but it also notably improved the overall clarity and soundstage of everything above that high pass filter.\u00a0 The main amps are just loafing along from the vocal range and up, with no low bass duties at all.\u00a0 One the best enabling enhancements I\u2019ve made to my system largely due to the reasons he states in the video.\nklettermann\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2 posts\n03-19-2026 at 02:48pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe \"don't need subs with full range speakers\" crowd who say this either never tried it or didn't do it properly.\u00a0 One thing that surprised me going down this path was how much\ntiming\nbetween the mains and subs mattered\u2014not just level and crossover.\u00a0 Actually doing this may require reexamining long-held positions.\nOnce I got that dialed in, the improvement wasn\u2019t just bass\u2014it affected image focus and overall coherence in a pretty obvious way.\u00a0 This seems consistent with\n@knotscott\n.\u00a0 I'm running full range mains and 2 subs.\nIt made me rethink how much of what we call \u201cgood integration\u201d is really about timing vs just blending levels.\nCurious if others have played with timing, or if most people are just setting crossover, gain, placement and leaving it at that.\nrocray\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,543 posts\n03-19-2026 at 02:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI always run a pair of subs in both of my systems. \u00a0I have stand mounts. Even if I had full range speakers,I probably would still integrate them. \u00a0However,my systems are built for my ears only. \u00a0Everyone else can build their systems for their ears. You like subs? Cool. You don\u2019t like subs? Cool.\ng2the2nd\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n385 posts\n03-19-2026 at 03:25pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have my set up with a 50 Hz high pass for my mains. Works for my big ProAc monitors and my baby Maggie\u2019s. In my set up having my single sub\u2019s voice coil the same distance from the listening plane as the mains locked it in. No phase or time delay issues.\nKills the system without a sub even though my monitors go pretty low on their own.\ngdaddy1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n549 posts\n03-19-2026 at 03:57pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@klettermann\nIt is amazing how the sub effects the entire system.\nSo many comments are made how people think because they have 'full range' speakers they don't want any more bass. As you point out, the effects on imaging and the entire system are pretty obvious.\nFor years I ran a pair of subs each next to the main speakers. I too thought about the timing issue as well as the effect on stereo image. However, recently, I became interested in the REL stacking method. So I needed to hear for myself what benifits can be had by stacking both subs together.\nI will confess I consulted with Chat GPT on how exactly it should be done. It gave excellent instruction and pointed out that when the speakers are close together the sound will \"couple\" together and produce bass with a +6db gain!! The advantage of doing this allows for both sub gain levels to be turned DOWN. This makes less excursion and reduces the stress on the amp, distortion reduced, making the bass cleaner and tighter. More well defined since it's not working as hard.\nSo the feet come off the top sub and a thin layer of drawer liner seals the two subs tightly together. I run them with High level inputs from both channels. They were placed off to the side about two feet from the corner.\nWow!!! My gain setting went from 2:00 on the dial down to around 10:00. One sub is set at 40hz and the other sub is set slightly higher at 60hz. The effect is not subtle.\nThis not only produced more volume but the texture was greatly improved. Less stress. Tighter and cleaner. The overall image was improved with no localization of the offset position of the stack. No tilt or offset of stereo image.\nBass coupling (stacking) is the next level. I'll never go back. It is a HUGE leap forward in bass reproduction. REL is on to something. It's not just adding a Sub, it's adding a coupled stack where the real magic comes to life. It's Physics.\nI can't recommend this enough!\nMore to discover\nKlipsch cornwall speakers\nSpectral Amps and Legacy Speakers?\nNeed list of 92db speakers and above.\nPlanars/ Electrostats benefits over b...\nA/V Receiver for B&amp;W matrix speakers\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAuralic Aries G2.1\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Why even full range speakers need subwoofers!","url":"https://forum.audiogon.com/discussions/why-even-full-range-speakers-need-subwoofers"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197868-20253\nEdit\nOT:  Fixing Listening Room Hum with a Ceiling Fan Cap\nLiving in a 20 year old home has disadvantages, if you happen to be the owner when the appliances all start to fail together.\nI was pretty sure this was the case with my ceiling fans.\u00a0 Besides humming loudly one failed to start without pushing.\u00a0 End of the line I thought.\nI was wrong, the humming and low torque were caused by degraded motor capacitors.\u00a0 In our world metalized polypropelyne capacitors almost never fail, especially in a speaker crossover, but I guess the continuous use in series with an AC current wears these out early.\nI had always thought that a humming ceiling fan was normal for an old fan.\u00a0 I was wrong, it's not.\u00a0 Replaced my caps and my listening room is much quieter!\nerik_squires\n03-16-2026 11:53pm\n5 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nbillpete\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n396 posts\n03-17-2026 at 08:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nInteresting post. Seems like they all hum eventually. I would never have thought to look for caps in a fan. Good of you to figure that one out.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n03-17-2026 at 09:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@billpete\nOf the 3 fans inside it fixed the hum in 2 of them.\u00a0 However, measuring the caps, all were significantly out of spec, measuring far too little uF and often too high an ESR as well.\u00a0 So, if you have an older fan and it hums it\u2019s probably time to replace the caps even if they don\u2019t eliminate your hum. $20 and 20 minutes with many models, though easier if you have the kind without lights.\ndweller\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,950 posts\n03-17-2026 at 10:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNice post!\nbuellrider97\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,066 posts\n03-18-2026 at 03:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGet on with your BAD SELF ! Never underestimate what a man and his soldering iron can accomplish! FWIT my house is 35 years old hence I\u2019ve replaced EVERYTHING, and I mean everything, except this one Hunter Douglas fan in the Master bedroom. That thing was installed when the house was new and it\u2019s a hugger due to a low ceiling and close proximity to the bed. After 35 years that thing is dead silent. If it ever gets noisy I\u2019ll PM you for tech support. \ud83d\ude06 Cheers , Mike B.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n03-18-2026 at 04:36pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@buellrider97\n- I'm working on upgraded capacitor kits for ceiling fans to eliminate jitter .....\nMore to discover\nFixing Wall Shudder\nFixing a scratch in an otherwise good lp\nNeed help fixing a Linn Axis\nDiagnosing and fixing transformer hum\nMarantz CD-67 SE - Worth Fixing?\nFocal 36 MONTH FINANCING\nAuralic Aries G2.1\nAyon Audio S-10IIxs\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"OT:  Fixing Listening Room Hum with a Ceiling Fan Cap","url":"https://forum.audiogon.com/discussions/ot-fixing-listening-room-hum-with-a-ceiling-fan-cap"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197732-114399\nEdit\nCartridge Cantilever - Nano-Tube Technology\nRecently I was to accept Carbon Fibre as a Material to 3D Print a Wand and other Parts as exchange parts for a owned Tonearm.\nAfter having discussed the methodology for the Printing and how it was to be a viable alternative to metal,, I became further interested in CF usage for other applications.\nI learnt it is used as a Cantilever Material which was first introduced approximately 20 Years ago.\nFast Track forward to the current period and their is one Cartridge Company using Carbon Fibre Nano-Tube as the Cantilever Material (CFN-T).\nCFN-T are a rave as a Technology and adopting the 1 micron thick Graphene Sheet to become other forms is where the industry is at.\nThe intrinsic properties of these newly created structures are proving extremely attractive as replacement for older forms.\nThe success of CFN-T has now led to both Beryllium and Boron being a produced Nano-Tube.\nThe weight/stiffness of the Nano-Tube is extremely attractive over Rod and older Splutter Produced Tubes.\nIn relation to the Phono Cartridge it does seem there is a New Direction for rare metal materials being used as a Cantiver,\u00a0 The Nano-Tube is much increased in sustainability for these rare metal\u00a0 materials and as a design for a Cantilever will most likely prove itself as a worthy alternative to designs in use for the past 40ish years.\nI am clear page book on this Subject and more than willing to be introduced to the thoughts of others who have an interest in these materials and the suggested application.\npindac\n03-02-2026  6:20am\n6 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n03-02-2026 at 04:09pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n\"1 micron thick Graphene Sheet\" that is ridiculously thin, holy smokes\nShure\u2019s V15VxMR specs\n\"The ultra-thin (0.0005-inch) beryllium MICROWALL/Be tube\" is 12.7 micrometers (according to an online calculator)\n..........................\nMicrons\nmicron\n, or micrometer, is a unit of length equal to one millionth of a meter. A human hair is about 90 microns in diameter.\nAbbreviation: \u00b5m\npindac\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,236 posts\n03-02-2026 at 07:54pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe Make Up of the nano-tubes do have different OD's, but all remain in the low microns.\nHow many CFN-T's are placed in the Miyajima Cartridge to produce a Cantilever is an unknown through their literature.\nStacked Sheet to 30microns, then tolled to have a 40micron hollow will be a nano-tube @ 100microns. 20 x 100um = 0.2mm, which is ideal to attach a stylus to.\nThis is a new Science unlike anything used to date, there is a whole lot of learning to be had, and One Company has pioneered their way into the Technology.\nThe value the nano-tube is able to offer to acceleration of transferred energy is yet to be fathomed as a offering. It will be quite different to what is already known and will be out in front in relation to what a few other materials have been able to offer. The weight / rigidity ratio is extremely attractive.\nI'm sure new Damper Materials are a must to exploit the properties, and would strongly suggest Miyajima, are knowing this themselves. Maybe even New Armatures are also to be designed?\nIf the few who live an breathe in this world of technology could chip in, that would be great. Maybe they can't for all the right reasons for protecting IP.\nI recently informed my friend who I put most trust in, to learn about Analogue Audio and Boron and Beryllium nano-tubes were very well received. My planned visit in a few weeks I am sure will be given a recess to discuss this very subject.\nwolfie62\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n358 posts\n03-02-2026 at 09:22pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe CFN-T is old technology. The 1979 Nagatron 360CF used graphite (source of graphene!) to produce its cantilever! Very thin. Very strong and stiff!! I have one, and can attest to its very unique properties and sound!! It\u2019s very lush, full, articulate, detailed! One of my very best cartridges out of 171. It took me 6 years to find a good stylus for that cartridge. Yes, it\u2019s an MI cart. But it fully embodies the \u201cnew\u201d tech. At the time, they didn\u2019t understand why very thin graphite produced such a strong cantilever! Now it\u2019s understood!\npindac\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,236 posts\n03-03-2026 at 04:59am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCarbon Fibre Reinforced Polymers are used in a variety of industries for approximately 50 years.\nThe knowledge shared showing a CFRP was selected for a Cantilever Material near this timeline is showing a very innovative way of thinking back in the 70's, Kudos to those who ventured and gained.\nCFRP Technology is different from CFN-T Technology.\nThe CFRP has not got the same purity as a material, as does the CFN-T.\ngoofyfoot\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,608 posts\n03-13-2026 at 11:26pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI would assume that not all carbon fiber materials are made equally. Like everything else, advancements in technology, i.e. tempering for hardness, could advance over time. I just bought a pair of headphones that use a pliable carbon fiber for the drivers.The tech comes from a company in Sweden. The same material is used for helicopter blades on Mars.\npindac\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,236 posts\n03-15-2026 at 08:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe CF material being referred to in the Swedish Headphones is TeXtreme, it is a Patented Product but also adopted by a large selection of Speaker Driver Manufacturers.\nSome who use it give TeXtreme a unique in house name when they refer to it in the marketing spiel that come with the product on offer.\nMore to discover\nBroken cantilever\nOrtofon MC X30 broken cantilever - wh...\nNew Zirconia Pipe Cantilever .. What'...\nBent cantilever on Dynavector 10x5 Sc...\nSoundSmith Sapphire cantilever upgrad...\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nVolumio Primo Plus\nAurender N100H\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Cartridge Cantilever - Nano-Tube Technology","url":"https://forum.audiogon.com/discussions/cartridge-cantilever-nano-tube-technology"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197714-20253\nEdit\nI've had it with cables!!\nMy home theater system has 6 separate network devices:\nRoon endpoint\u00a0(Pi 5)\nSteam game repeater\nReceiver\nRoku\nSo feeding them all via Ethernet has required an 8 port Ethernet switch, and lots of extra cabling.\u00a0 I\u2019m done, done!!! I\u2019m ripping out all the Ethernet except to the Pi 5. Everything else I\u2019ll either use with the Wifi I have now or add an Asus Mesh extension point.\u00a0 I\u2019ll let you all know how that goes.\nOf course it isn\u2019t just the ability of connecting a cable from the wall to the switch and the switch to the devices, it\u2019s also about hiding it all in a modest and sparse living room.\u00a0 It\u2019s not worth the hassle. I\u2019m going to make this work.\nPS - To anyone doing similar work, strongly recommend you get a free (as in beer) Wifi analyzer.\u00a0 They make them for phones and laptops. They help you see channel contention and signal strength so a great way to see what to expect, whether you need to move Wifi channels or add an access point.\nerik_squires\n02-28-2026  5:34pm\n6 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nmike_in_nc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,250 posts\n03-01-2026 at 05:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGood luck. It will be interesting to see how it works for you.\nAgreed on a WiFi analyzer.\njsd52756\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n514 posts\n03-01-2026 at 05:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou crack me up Erik.\u00a0 :')\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n03-01-2026 at 05:48pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWelp,\u00a0 of course nothing is that easy. Who knew that the Anthem MRX 540 receiver only does Wifi if you connect via Google Home? There\u2019s no dedicated Anthem app, and no way to configure Wifi without Google Home. Well, that makes perfect sense for a toaster or a coffee maker.\u00a0 Are you a toaster Anthem MRX 540?\u00a0 Does Anthem in Canada do kitchen appliances as their main gig?\nAfter 5 tries I finally get it and Google home to complete a setup.\u00a0 Made the mistake of turning on auto-updates.\u00a0 This morning it attempts to flash the firmware and gets temporarily bricked.\nI ask Claude.\u00a0 The solution is easy:\u00a0 Hold down Setup and Power to 10 seconds after pulling/inserting the plug.\nOh, wait, no, wrong instructions.\u00a0 It\u2019s MENU and Power.\nOK, still bricked.\u00a0 Oh, wait,\nyou have to unplug all HDMI cables first!\nHow could I have been so stupid to forget this routine bit of advice.\nLet me tell you dear readers, neither Claude nor OpenAI got the instructions anywhere near right.\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n03-02-2026 at 04:25pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nlook at this mess. all done when ethernet was 10x faster than wifi\nI made a slide on/off back panel so it\u2019s dark in the cabinet, you don\u2019t see wires against the white wall behind. That let me cut huge holes in the back for access and ventilation. The back of the AVR especially is a PITA to see/read the jacks, next time it goes on a higher shelf!\nhttps://www.audiogon.com/systems/12369\ngoofyfoot\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,608 posts\n03-13-2026 at 10:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@elliottbnewcombjr\nThat looks like my rats nest. I strongly recommend using a Shark hand held vacuum when needed.\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n03-14-2026 at 03:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@goofyfoot\nI've got one Black & Decker, that's 18v rechargable batteries, and chargers in the basement and here in my office, 4 batteries, no 5 counting the active one.\nI also got a small powerful 120v wired one from the friend who bequeathed me 4,000 lps, long cord, I use that one mostly for the cars.\nI've got a small Dyson stick, gift from my neice. At the time I thought, who would pick a toy like this, kind of silently annoyed. I tried it, it's handy for quick jobs between the big heavy beast that does an amazing job, maybe twice a year.\nMore to discover\nGood component video cables....?\nXLR cables for a reasonable price?\nNeed Help Identifying Specific Discov...\nDirectional wires/cables\nShunyata Speaker Cables Sigma v.1 vs ...\nAyon Audio S-10IIxs\nVandersteen Model 2c ii signature\nAurender N100H\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"I&#39;ve had it with cables!!","url":"https://forum.audiogon.com/discussions/i-ve-had-it-with-cables"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n189323-152017\nEdit\nAnyone having shipping issues with Viva Tubes\nI received a shipping notice(actually just a creation of a label) from Vivatubes on Monday at 9:26am. They have yet to give the package to the post office. Has anyone had issues with this company\nrufusluna\n04-04-2024  1:45pm\n16 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ntooblue\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,112 posts\n04-04-2024 at 02:37pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHave done business with Viva Tube through their ads on e-bay and their website about 6 to 7 times with great results. Enjoy the music\nericgale\nDetails\nDiscussions\nPosts\nThis discussion\n44 posts\n04-04-2024 at 02:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNever always shipped on time and arrived in 3 days.\nroxy54\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,245 posts\n04-04-2024 at 03:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt's only Thursday, I wouldn't panic. Maybe they just don't do shipping every day.\ndekay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,249 posts\n04-04-2024 at 03:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nEast Coast storm hit a few days ago.\nDeKay\nvinylvalet\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n956 posts\n04-04-2024 at 04:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI purchased some tubes for my phono stage from Viva. Since they don't have a low noise testing option like, for example, TubeDepot, I specified that I needed a low noise pair when I placed the order. When the tubes arrived I found them too noisy for phono section use. I emailed them and never received a response. Won't be using them again.\nI've ordered many tubes from TubeDepot and only recall one issue. They responded immediately and resolved the issue at no cost to me. For NOS, my experiences with Brent Jesse have been similarly been positive.\ntksteingraber\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n803 posts\n04-04-2024 at 06:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFor all the good comments I have heard about Viva Tubes I had a poor result with them in my only purchase. \u00a0I ordered a Russian NOS matched pair of preamp tubes. \u00a0It took several days to ship them and when they arrived they looked very used and they tested very unmatched in the 70-80%\u2019s. \u00a0They immediately accepted my return and I received a full refund for tubes and shipping upon return delivery. \u00a0Maybe buying new production tubes would be a better result. \u00a0Once again I am glad I own a tube tester.\nmofimadness\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,591 posts\n04-05-2024 at 12:00am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI've bought from Viva Tubes several times.\u00a0 All new production tubes.\u00a0 All have been brand new and tested very high on my tester and sounded superb. Very pleased so far.\nI've also had very good luck with the Tube Depot.\nmazian\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n449 posts\n04-05-2024 at 12:19am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI've had no problem with Viva Tubes and I live in Australia.\nknotscott\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,430 posts\n04-05-2024 at 01:07am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI've had 4 or 5 successful dealings with them....no issues.\naudioman58\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,646 posts\n04-05-2024 at 01:54am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYes the lager may be made but they take and ship orders as they come in\nit could take 24 hours after to ship ,by end of the 2 nd day they will be shipped.\nrufusluna\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23 posts\n04-05-2024 at 01:05pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nUpdate.\nUSPS decided the shortest path between Ma and Pa was through Grand Rapids Michigan. Good times\ns391\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3 posts\n04-05-2024 at 01:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI've ordered from them several times and have always received top notch customer service.\nHowever, there was one order where USPS thought the quickest route from MA to WI was via Fresno, CA.....\neddnog\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n88 posts\n05-09-2024 at 05:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNo issues at all with my order of quad matched Psvane CV181-T MkIIs.\nmarco1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n714 posts\n03-04-2026 at 08:40pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nViva is a first rate seller. \u00a0Shipments have always been immediate for me, have never had a problem with communication, and on occasion when there was a warranty issue, it was handled immediately as well.\nsls883\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,084 posts\n03-04-2026 at 09:25pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI've placed three orders with them recently.\u00a0 All of them shipped quickly.\nI emailed Nolan a question about a recommendation and he replied within a day.\ngoofyfoot\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,608 posts\n03-13-2026 at 10:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI ordered a Linlai tube from Viva and it took about two weeks but no complaints here. JFYI, post offices along the east coast, especially NYC, take an absurd amount of time.\nMore to discover\nShipping to Canada? Don't use UPS\nShipping Speakers, watch out\nShipping tube amps, leave tubes in or...\nAnyone have issues with shipping Cana...\npacking a turntable for shipping\nAurender N10\nAurender N100H\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Anyone having shipping issues with Viva Tubes","url":"https://forum.audiogon.com/discussions/anyone-having-shipping-issues-with-viva-tubes"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197694-221106\nEdit\n$5000 living room speakers for classical music\n- Roon/Qobuz WiFI ($28/month)\n- miniDSP SHD power.\u00a0 (brain, $1500)\n- Focal Aria Evo X No.1. (2-ways speakers, $$2600)\n- Dual subwoofers: SVS SB-1000 Pro\u00a0 ($1000)\nThis setup could be a best of $5000 reference level performance in living room?\njoselijoseyang\n02-27-2026  6:02am\n11 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nkofibaffour\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n726 posts\n02-27-2026 at 08:06am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nchange the speakers and yes. Those speakers lack lower treble forwardness necessary to not sound less snappy, attack presence and dull edges whilst still being sibilant and harsh\n@joselijoseyang\nthis is a better setup:\nSpeakers -\nhttps://www.usaudiomart.com/details/650295501-mofi-sourcepoint-8-speakers-mint-black-finish-nyc-local-pickup/\n2 subwoofers -\nhttps://rslspeakers.com/products/rsl-speedwoofer-10e\nAV Processor with DIRAC ART capability -\nhttps://www.usaudiomart.com/details/650294067-marantz-cinema-50-94-avr/\nTotal is $4,048\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n02-27-2026 at 03:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI kind of have to agree.\u00a0 2-way Focals tend to have a hole in their response.\u00a0 Fritz would be a much better way to go if you can afford them.\ntuberist\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,029 posts\n02-27-2026 at 04:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNSMT Model 75\nstereo5\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,728 posts\n02-27-2026 at 08:06pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nUsed Vandersteen 5 speakers. \u00a0Listed today, no affiliation.\nhilde45\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,101 posts\n02-27-2026 at 08:33pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAscend Acoustics\nELX (RAAL ribbon). Punches way above its weight.\nbassbuyer\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n947 posts\n02-28-2026 at 12:02am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGreat subs choice. I have the same pair in the front corners of my listening room. \u00a0Excellent for music of all kinds. \u00a0You can adjust as needed with the app from song to song if you like without leaving your listening position.\njfrmusic\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n409 posts\n02-28-2026 at 03:26am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@joselijoseyang\nClear choice\nHarbeth C7ES-XD\nBeen an audiophile for many years and owned many speakers. For Classical Harbeth is above anything I\u2019ve ever heard. These stand mounts have a \u00a0fantastic midrange and a low end that does not need a sub. The highs are extended and silky. Soundstage is wide and deep. And they even sound great at low or mid volume. They are the sweet spot in the Harbeth line. At 6 Ohms they are easy to drive. At $4800 a steal.\njoselijoseyang\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6 posts\n03-09-2026 at 04:09am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThank you.\u00a0 \u00a0So many choices.\nLooks like below is more appealing now (if wait year end sale for 50% off)\n-\u00a0 Wiim pro plus.\u00a0 (as a brain)\n-\u00a0 Arcam SA30 amp. (as a brawn)\n-\u00a0 KEF R11. Meta. speakers\nNothing can go wrong?\u00a0 \u00a0$7000\nknock1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n387 posts\n03-10-2026 at 09:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhy\u00a0 would you need Wiim when Arcam has a streamer and DAC built in?\nlarsman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,218 posts\n03-10-2026 at 09:37pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI would recommend Harbeth speakers within your price range; in my experience, they are not so great at rock and reggae as I'd like, but they are awesome for classical and jazz and more acoustic music.\ntroidelover1499\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n258 posts\n03-11-2026 at 02:57am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWow there are so many choices to pursue.\u00a0 I heard bog Klipsch horns driven buy Wavelength amplifiers using 300B tubes playing classical music it was just fantastic sounding.\u00a0 I also remember hearing a wonderful system of Sound lab electrostats with Futterman OTL amplifiers, like 36 tubes driving the speakers and the sound and realism was pretty memorable.\nMore to discover\nCan you recommend some classical CD's...\nBest sites to download jazz and class...\nClassical Archives\nBest CD Player for Classical Music?\n$5000 living room speakers for classi...\nAurender N10\nAyon Audio S-10IIxs\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"$5000 living room speakers for classical music","url":"https://forum.audiogon.com/discussions/5000-living-room-speakers-for-classical-music-3"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n191306-188464\nEdit\nThe End of My Search for a Power Conditioner\nI posted recently about my search for a power conditioner.\nPreviously I tried a PS Audio PowerPlant 3. It apparently did what it was supposed to do but I could not hear much of a difference except the soundstage seemed a little narrower and darker which I did not like. So I returned it.\nI then decided to try a power conditioner with active filtering, I ordered an AudioQuest PowerQuest 707 which is the top of the PowerQuest line before the Niagara line. It did lower the noise level slightly and improved imaging. Initially I liked what I was hearing. After a day or so I noticed that the soundstage was not as big or open and that the upper midrange and lower treble were more forward than I liked. Upper strings were less refined and more upfront. This was not a perspective I enjoyed as I prefer a more relaxed and laid back presentation so I retuned the unit. Now the Niagara line which gets excellent reviews may present a much more refined sound. However I did not want a larger and heavy power conditioner that also has been noted to have a potential issue with hum. A fact noted in their user guides with steps to eliminate it. Plus they are expensive.\nReading reviews of a few other active Power Conditioners I noticed that reviewers also mention this forwardness in perspective. It seemed this might be a characteristic of the active filtered conditioners although I'm sure there are some that may not do this. So I decided to try a power conditioner with passive filtering. And the best reviewed I could find were those offered by Shunyata.\nI called The Cable Company and borrowed a Shunyata Gemini 8 Power Conditioner and a Gamma XC Power Cable. The XC (Xtra Current} cables are specifically designed for their power conditioners\nThis unit was excellent and transformative for my system. Every aspect of the musical spectrum was positively impacted. At first I noticed more and better bass. Actually a little too much bass. I had just completed the blending of my REL T3 sub (an older model I had connected to my Keyboard system) with my Harbeth C7ES-XDs. The bass with the Gemini was so impactful I turned off the REL. There was too much low end with the sub. Most notably the overall dynamics of the system improved as a result of the darker background. My system was very low noise before the Gemini but now an even blacker background emerged. Detail improved and the upper midrange and treble were beautifully rendered with no forwardness. In fact the soundstage got bigger and wider. Soundstage depth improved slightly as well. Upper strings were more silken and refined. The overall presentation was balanced. I could increase volume without any part of the frequency standing out. Also I could now play my system any time of day and it sounded the same. I played through my 50+ reference tracks several times enjoying every one and hearing a more dynamic and live presentation.\nNow I thought what would a Shunyata Denali 6000/V2 sound like at over 2.5x the price of the Gemini? \u00a0I had to find out. So I borrowed a Denali and a Theta XC power cable from the The Cable Company. After speaking with Shunyata they said don't audition the Denali unless you can buy it. It's that good. My expectations were high.\nWell my expectations were not met. I found that at least in my system I preferred the Gemini. I found the Denali sounded similar to the Gemini in general with maybe a little better bass but again with the upper midrange and lower treble a little too forward and emphasized for my taste. Now according to Shunyata the Denali should be powered by the Alpha or Sigma power cord. So using the Theta may have been hampering it. But adding another $3k for a power cord to the $6k for the Denali was not something I was interested in paying considering the wonderful performance of the Gemini in my system.\nI also tried the Gemini with the Theta power cord and found that cable added a slight brightness to the treble and I preferred the Gamma with the Gemini, The Gamma is a copper cable while the Theta has a silver core that is lined with copper. Maybe that's the source of the brightness. Thinking about that I tried the Denali with the Gamma and it did slightly smooth out the treble but not entirely. I really think the Denali may need a Sigma or Alpha power cord. But the overall sound characteristic of the Denali is not significantly different than the Gemini. The Denali 6000/V2 has been on the market for about 5 or 6 years while the Gemini is a new product which I believe was introduced in 2023. So I think there has been a significant trickle down of Shunyata Technology into the Gemini 8 making it a really good value at $2.5k. It has a 20 Amp output and can be used with amplifiers up to 200 watts. I did try my Accuphase P4600 150 Watt amp plugged into the Gemini. It sounded pretty good but I slightly preferred the sound of the amp into the wall. At some point I will try it again with an upgraded power cord. BTW the Gemini is a beautiful piece of equipment that is solidly built, weighs in at 10 pounds, has a Lifetime Warranty and offers a Grounding System you can implement if desired.There is also a Gemini 4 that offers a 15 Amp output priced at $2k. The Gamma power cord is $498.\nBottom line is if you are looking for a small and light weight power conditioner take a look at the Shunyata line. In any case whatever brand always try one in your system as the synergy between power conditioners, cables and components can not be over emphasized.\n@lalitk\nYou were right. A quality power conditioner can really be the foundation of a system.\njfrmusic\n09-13-2024  6:15pm\n35 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\naudioquest4life\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n789 posts\n09-14-2024 at 02:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCongratulations. Glad you were able to find something that met your needs with qualities that are commensurate with higher priced products. It seems to be true that newer Shunyata products are benefiting from trickle down technology. New product announcements which incorporate upper level tech are being featured in these new lower price products. For example, The new Shunayta X series power cords with QR technology really showcase that Shunyata is advancing their top tier products while bringing their once top tier product tech to a lower level product line with a better price. Of course, better price is in the eye of the beholder.\naudiotroy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,001 posts\n09-14-2024 at 04:14pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWe have tried the top of the line Audioquest compared\u00a0 to our reference audio magic oracle the Audioquest\u00a0 was sent back the next day\nwe have used huge amplifiers with the Audio Magic and they improved their performance\nin fact we have tested over the years power conditioners from:synergistic, shunyata, exact power, silver circle, running springs audioquest,audience, ps audio,isotek and audio magic.\nDave and Troy\nAudio Intellect NJ\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n09-14-2024 at 04:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThank you for your detailed descri","title":"The End of My Search for a Power Conditioner","url":"https://forum.audiogon.com/discussions/the-end-of-my-search-for-a-power-conditioner"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197742-537\nEdit\nIs The Audio Asylum Down?\nBack now.\ndill\n03-04-2026  1:30pm\n0 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nMore to discover\nReview: Townshend Audio Speaker Podiums\nAudio Note Kit 3 AMP\nRecent Evaluation of the Home Audio S...\nWalker Audio Silver jumper vs Nordost...\nAudio Matiere/Audio Sculpture\nRSX MUSIC SERVER RSX MUSIC SERVER\nAuralic Aries G2.1\nAntipodes Audio K40\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Is The Audio Asylum Down?","url":"https://forum.audiogon.com/discussions/is-the-audio-asylum-down-4"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197678-165894\nEdit\npreamp gain issue\nI currently use in my system a Benchmark LA-4 preamp. Great by the way.\u00a0 I believe the gain is about 16db out of the box. My previous DAC was a Benchmark 3B, 26Db of gain. I currently use a Bricasti M1 SE DAC which is most likely around 10 or 12DB of gain. As a result, I adjust the gain on the LA-4\u00a0 up to its max of an additional 10db. As a result I don't have go too high on my La-4 volume dial to achieve my 85 or so db listening level. I am now looking at a tube preamp\u00a0 to maybe replace the LA-4.\u00a0 Most with very few exceptions, do not offer an adjustable gain feature. Therefore, am I correct,\u00a0 if most of the preamps I'm looking\u00a0 at are 10 to maybe 12 or so Db, I'll be forced to increase the volume to compensate for the difference, at my listening level?\u00a0 Just like and have gotten used to the gain feature. Am I making too much of it?\u00a0 \u00a0I guess the I'll be turning the knob or remote to 12 or 2 pm rather than 10;30 or 11AM.\u00a0 Thanks Robert TN\u00a0 \u00a0 \u00a0 Hope the above made sense.\nrobshaw\n02-25-2026  7:35pm\n10 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nlarsman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,218 posts\n02-25-2026 at 09:31pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@robshaw\n- check out Aric's preamps. Mine has an adjustable output level control knob on the back; I think they all might have this feature.\nyogiboy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,232 posts\n02-25-2026 at 09:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n\" Am I making too much of it? \"\nYes!\nmulveling\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,475 posts\n02-25-2026 at 10:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n8 - 14dB gain is considered normal for an active preamp these days. Anything above 20dB is aggressively high gain. Tube preamps in the past sometimes had such high gains (20 - 30dB) because: 1) most of the common dual-triode tube types had tons of gain available, so why not use it and 2) analog sources could have much lower output levels than today\u2019s common digital, and they could benefit from the extra boost.\nSome of the classic full-service tube preamps shipped with onboard MM phono stages that \"could\" be used with some MC carts, because of the ultra high line stage gain covering what would normally be supplied by a head-amp or SUT.\nAnyways, the main downside of all this high gain is noise floor. Especially with tubes. This can matter if your speakers are very sensitive. But frankly I don\u2019t mind a bit of noise floor (hiss, not hum or buzz!). This is a personal preference. The Benchmark stuff can crank out gobs of gain with NO noise because...that\u2019s what they do. But it will sound \"dry\" compared to a nice tube pre.\nSome tube preamps have gain controls, but most don\u2019t. There are still a couple of the 20+dB tube preamps out they, though they have become more rare in this age. And frankly, you don\u2019t need that much gain. Many tube preamps use an analog potentiometer volume control or stepped attenuator, both of which will generally give you better results at the 12:00 - 1:00 range of the dial than the 9:00. dial position can impact L/R channel balance (pots) or step granularity (S.A.\u2019s). I do quite like the digital IC volume chips (e.g. ARC Reference) though from a \"purist\" standpoint some don\u2019t like them. The big advantage with chips is an inherent L/R balance control with no additional sonic performance hit!\nSo my advice is: get the tube preamp you want, and adjust the volume dial higher to compensate as needed!\nrobshaw\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n360 posts\n02-26-2026 at 02:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@mulveling\nThanks so much for your explanation. I always wanted to try something tube related, especially a pre amp. I really appreciated you taking the time.\u00a0 \u00a0Leaning very heavily towards the Aric Audio brand. Now, just trying to decide between the Jackpot and Motherload XL.\u00a0 The wait time is quite extensive though. Should you have any preferences, or suggestions, that would be great. Robert TN\nrobshaw\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n360 posts\n02-26-2026 at 03:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@larsman\nOn my post to another, that brand is my number one choice so far. Now have to decide on Jackpot vs Motherload XL? Not sure as to the merits of one vs the other?\u00a0 My first foray into tubes!\u00a0 Thanks for your help also. Robert\nlarsman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,218 posts\n02-26-2026 at 04:12pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@robshaw\n- Rob, I'd recommend giving Aric a call; he's a great guy and I know he'd be delighted to talk to you in depth about the relative merits of the Motherlode XL and the Jackpot.\nrobshaw\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n360 posts\n02-27-2026 at 01:27pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@larsman\n@mulveling\nThank you both so much for your advice. Have spoken to Aric a few times and yesterday, after his advice, placed an order for the Jackpot.\u00a0 For those considering one of his products, he suggested the Jackpot specifically for me,\u00a0 as my listening preference is Rock & Roll music. Thanks again Robert\nlarsman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,218 posts\n02-27-2026 at 01:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@robshaw\n- Great! Please give us your thoughts on it when it eventually shows up, along with the tube compliment you use.\nrocray\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,543 posts\n03-02-2026 at 03:57pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGreat choice\n@robshaw\n. I run a Motherlode II in my main system,and I am currently running Aric\u2019s older Unlimited in my secondary system. I have found the gain control highly beneficial when rotating amps. \u00a0Please let us know when you receive the Jackpot. Enjoy!\nrobshaw\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n360 posts\n03-03-2026 at 02:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt will be\u00a0 awhile before I receive the New Jackpot. I think He mentioned 20 weeks or so. Patience? Have no choice. His equipment offers everything I was looking for. Once inInstalled, I will surely share the experience with All!\u00a0 Thanks for all your help and advice. Roebrt\nMore to discover\nInfinity F.E.T. preamp\nVAC Ren Mk III / Sig mkII Preamplifie...\ntuner to tube preamp\nCAT Preamps vs Amps\nBryston BP-17 cubed or Benchmrk LA4 P...\nAntipodes Audio K40\nAuralic Aries G2.1\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"preamp gain issue","url":"https://forum.audiogon.com/discussions/preamp-gain-issue"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194073-692\nEdit\nChronos tweak at Axpona\nI was passing by this room promoting Chronos tweak , the sound seems so good and \u00a0huge . I like what heard, I was shocked to see the speaker were so small.As I listen I started liking the music more coming from the speakers.The price on this tweak is $2500, which I think is very expensive. The technology according to the Taiwanese doing the demo has something to do with resonance , vibration , space correction thing ? Iam not sure. But it did sound good with Chronos.It got me interested the next day I brought my wife with me.and my own cd to play . She like it for $1500 she will let me have it.But we never negotiate. Because I feel the tweak is so new. Let me ask someone here who attented Axpona and happen to listen to Chronos tweak. I willl really appreciate your experience and share it here.\njayctoy\n04-14-2025  2:09pm\nNext \u203a\nLast \u00bb\n57 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\njayctoy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,659 posts\n04-14-2025 at 02:13pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWithout the \u00a0Chronos the sound is not as involving and focus. I also think the sound stage is collapsing. The layering also suffer. Vocal is not as good either.palpability is also not there.\ngrannyring\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,700 posts\n04-14-2025 at 04:06pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCan you give a link? Not sure what this is? Room acoustics tweak or a filter or what\u2026..Thanks\nnoromance\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10,536 posts\n04-14-2025 at 05:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@grannyring\nNirvana Audio Chronos\njayctoy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,659 posts\n04-14-2025 at 05:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nEmail..\n[email\u00a0protected]\nhope they were able to get distributor here.\njayctoy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,659 posts\n04-14-2025 at 06:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIn the beginning I ask myself will the $2500 cable do what this chronos does ? My steer is no. It lower the noise of the system , the layering becomes more holographic, and the vocal is more focus.My wife said the music becomes more involving, according to my wife the music becomes more effortless .When I got home she was a bit disappointed I did not get it.\njayctoy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,659 posts\n04-14-2025 at 06:05pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy wife even told me. It will be needed on classical music.\nPost removed\nApr 14, 2025\ntablejockey\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,431 posts\n04-14-2025 at 11:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nUh boy, another audio show \"thingie\"...\nIf the OP AND his wife heard improvement, fine. But anyone who's been to shows have said the same thing about countless thingies doing the same thing over and over again.\nI'll blow my money on room, gear and speakers.\njayctoy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,659 posts\n04-14-2025 at 11:50pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTablejackey agree.\njayctoy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,659 posts\n04-14-2025 at 11:54pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTablejackey agree.\njeffbij\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n273 posts\n04-15-2025 at 03:41am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n(Not saying that the device doesn't work, etc.) But I find it interesting when you go to a company's web site, you see a slick set of background pictures, quotes, and general statements about their product, but you never even see the actual product, or any explanation of what it is or how it works,. Even the product manual doesn't say much of anything.\nI final found a couple of pictures of this device, but the text was all in Chinese.\u00a0 Makes me just shake my head and wonder...\ntony1954\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,321 posts\n04-15-2025 at 04:07am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n\"Nobody ever went broke underestimating the intelligence of the American people\"\nP.T. Barnum\nkeswitzer\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5 posts\n04-15-2025 at 01:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhere does it go in the audio stream?\u00a0 Even their owners manual is useless.\njayctoy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,659 posts\n04-15-2025 at 01:36pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nKeswitzer if you are asking where it will be connected in the system? You don\u2019t need to connect it to the system , you can put it anywhere inside the room. No power no batteries. You can bring it to your car and place it to the passenger seat or cup holder.They demo guy said you can use it on concerts.\njayctoy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,659 posts\n04-15-2025 at 01:43pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy only hope if they got distributor here in the US they will tell them it\u2019s overpriced.For the price of $1000 maybe I\u2019ll buy. For $500 I won\u2019t even think about it. I will grab one.\njeffbij\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n273 posts\n04-15-2025 at 02:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe question still exists.... What do the thing actually do?\u00a0 \u00a0It says you can put it in a different room and it will do... something...???\u00a0 \u00a0but don't put it close to a computer or device that has to read/write to storage medium because it will cause a problem...\u00a0 what the...???\n\u3010 Caution! \u3011Do not insert Chronos into any electronic device with electronic computer capabilities (e.g., desktop computers, laptops, NAS servers, projectors, car computers,\u2026 etc.), in order to completely prevent any form of hardware read or write, which may destroy the integrity of its effects.\njayctoy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,659 posts\n04-15-2025 at 02:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI only saw it near the cd player .\namtprod\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n140 posts\n04-15-2025 at 03:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@jeffbij\nNAILED IT!!\u00a0 I have yet to see a single photo or video of the actual product, being used, a measurement, anything OTHER than platitudes and bloviating marketing speak.\njayctoy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,659 posts\n04-15-2025 at 03:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAmtprod I don\u2019t know if you will ever see measurements. Or video ?.For $2500 you are entitled to get more info.\njeffbij\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n273 posts\n04-15-2025 at 03:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHere is a link to a picture that I found on their Facebook page.\u00a0 It looks to be some kind of USB device (the square thing it is plugged into is a portable battery pack).\nLooks to me like just another gadget for people with too much money to waste their money on.\nhttps://www.facebook.com/photo.php?fbid=846066504198560&id=100063856551443&set=a.719561133515765\njayctoy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,659 posts\n04-15-2025 at 04:27pm\nCopy Comment URL\nReport Comm","title":"Chronos tweak at Axpona","url":"https://forum.audiogon.com/discussions/chronos-tweak-at-axpona"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197535-2135\nEdit\nDo your lights dim when your amp powers up?\nMine do. \u00a0Even though I have a home electrical system that is only 15 years old, a separate 20 amp breaker, 10 gauge line, and the amp plugged directly into a medical grade outlet.\nDo you have this issue? \u00a0If so, do you care about it, and is there any chance that it is affecting the quality of sound?\nknownothing\n02-13-2026  1:14am\n30 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nkofibaffour\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n726 posts\n02-13-2026 at 01:39am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nnope. thankfully. Hope you get it sorted though\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n02-13-2026 at 01:49am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMine used to when I had a Pass x350. I don\u2019t think I had a direct line for the amp at the time. \u00a0I kind of liked it. It made me feel like it was really powerful.\nI now have an Audio Research Ref 160... no dimming.\ntomic601\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n13,758 posts\n02-13-2026 at 02:22am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNo but your and pretty much everyone panel and outlets may need connections tightened. All my systems are also exposed to salt fog so the extra love and attention. If it were me \u2026..\nmapman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23,710 posts\n02-13-2026 at 02:39am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019ve had amps that flipped the circuit breaker if you powered both up at once. So it can happen.\nmilpai\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,687 posts\n02-13-2026 at 02:58am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nVery strange that you have a dedicated line and the lights dim. Mine do not. Better get the lines checked OR move the amp to another room and see if the same thing happens. Good luck and I hope you are able to figure it out sooner than later.\ndevinplombier\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,714 posts\n02-13-2026 at 03:04am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nVery strange that you have a dedicated line and the lights dim.\nThis.\nWhat amp do you have?\nfiesta75\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,548 posts\n02-13-2026 at 05:30am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYes, mine do as well. I have 500,000 uf on both the positive and negative power supply rails on the big amp and 300,000 uf on the mid and tweeter amplifiers. Slow start circuits on all the supplies, but it will still pop the 20 breakers on occasion. Thanks for the suggestion to check the connections at the main panel...\nkennyc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,146 posts\n02-13-2026 at 08:48am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHmmm, lights dim when you flick on your 8000 watt class A amp (no sliding bias).\nWonder what it could be?\nknownothing\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,830 posts\n02-13-2026 at 10:52am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@kennyc\n@tomic601\ntightening a few screws seems like an easy thing to try, never would have occurred to me. \u00a0It\u2019s not like the room gets dark, but I notice it more recently. \u00a0Fwiw, this \u201cturning on\u201d from standby to 100W at idle, but perhaps the capacitors don\u2019t remain charged on standby - so part of the initial draw.\nMy \u201camp\u201d is actually an old Arcam AVR400. \u00a0I have never considered it particularly powerful by multi-channel receiver standards, but does have a respectable transformer, and lots and lots of circuit boards. \u00a0Here are the power specs:\nPower Output:\n90W per channel (7 channels driven, 8 ohms, 20Hz-20kHz)\nStereo Power:\n130W per channel (2 channels driven, 8 ohms)\nTotal Harmonic Distortion (THD):\n< 0.02% (3dB below max power)\nResidual Noise & Hum:\n< 0.3mV\nMax Pre-amp Output:\n6V RMS\nPower Consumption\nMaximum 1.5KW\nIdle (typical) 100W\nStandby <0.5W\nwhart\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,406 posts\n02-13-2026 at 11:38am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou are talking high current draw on start up. My suspicion is that your amp may be aged, old caps, etc. and that is contributing to the draw when you fire it up, resulting in light flicker. Dedicated lines don't necessarily insulate from that- they eliminate the noise of additional appliances on the same circuit, but current demands are not changed by the existence of dedicated lines. I defer to someone with technical chops to explain why--\nlarryi\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,674 posts\n02-13-2026 at 12:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt is quite normal for some amps to draw very hard on turn on because the power supply caps are not charged up so they offer very little resistance to the in-rush current.\u00a0 This happens only briefly and the lights should go back to normal.\u00a0 Some amps have a soft start circuit that reduces the in rush current and after things have stabilized the circuit is bypassed so that current can flow freely.\u00a0 As long as you don't trip the circuit breaker things will be fine.\nI don't see how tightening screws would do anything to reduce such in-rush current so I would not bother doing that.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n02-13-2026 at 01:29pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nEven modest power amps can draw a lot on startup.\u00a0 If your lights remained dim after that I\u2019d say you have an issue.\u00a0 Now, is it bad sounding?\u00a0 Of all the gear we use, linear amplifiers are more susceptible to AC voltage changes due to using unregulated supplies.\u00a0 If it drops but comes back up you are fine.\nTo be clear, part of what has happened is your own fault here.\u00a0 With 10 gauge wiring your startup current is going to be unusually high, so may affect the other circuits on the same leg for a moment.\u00a0 You probably wouldn\u2019t have this problem on a normal 12 or 14 gauge circuit! :D\nIf in doubt the first step is to monitor how bad the issue is.\nGet a cheap tester like this one and plug it into your outlet at your stereo and also at another circuit which shares the same phase.\nSee how bad the drop is, and especially measure the N-E voltage.\u00a0 If you find an excessive drop, or more than 2V on N-E it\u2019s time to contact an electrician.\nOn a related note, my home suffers seasonal + episodic voltage swings due to weather and HVAC turning on and off, as well as different voltages during the day vs. at night.\u00a0 All within spec but to keep my system voltage regulated I use a\nfurman with the AR + SMP features\n.\u00a0 \u00a0To be clear, don't fix house wiring problems with a power conditioner.\u00a0 \u00a0 Only if you know your power is good/safe should you use a conditioner to improve the stability.\nAlso related, I moved in when this house was about 15 years old and I did have flickering lights when certain appliances were used.\u00a0 Like, my living room lights would flicker when the bathroom fan was on but on different circuits.\u00a0 Little things like that all around the house.\u00a0 I ended up replacing 100% of the wall switches and all the 120V breakers which fixed the problem.\u00a0 My point is just that at 15 years, you start edging into breaker reliability issues, though they should overall last another 20 years.\u00a0 If you end u","title":"Do your lights dim when your amp powers up?","url":"https://forum.audiogon.com/discussions/do-your-lights-dim-when-your-amp-powers-up"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193430-97334\nEdit\nFor Swiss digital fuse box owners\nIf you have not upgraded to the Graphene Sluggo, you need to strongly consider doing so. \u00a0I've gone through the gamut of the sluggos starting with brass, which I didn't like, copper which sounded less harsh and warmer, and then to copper in gold immersion which has been in my system for about a year. \u00a0Over the holidays, there was a promotion from Veri-Fi and I ordered 2 of the graphene sluggos for my VAC mono amps on a whim, having been happy with the copper in gold immersion sluggos. \u00a0Mark contends that the graphene sluggo is the closest to being hard wired without a fuse (of course still protected by the fuse box itself) that one can get. \u00a0WOW. \u00a0Much clearer and a better sound stage. \u00a0The high end is cleaner and crisper without being harsh. \u00a0That's important to me because my ears don't like an overbearing high end. To my ears, this wasn't a subtle change either. \u00a0If you are reading this and don't have the SDFB, do yourself a favor and check it out. \u00a0If you don't believe fuses make a difference, please find another discussion.\northomead\n03-02-2025  4:44pm\n6 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nmarkalarsen\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n731 posts\n03-05-2025 at 12:14am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have the Graphene in both my DAC and BAT VK-80. My system sounds wonderful but I am too lazy to AB them because the equipment is very difficult to access. I have eight SAFBs.\nbigtwin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,626 posts\n10-29-2025 at 05:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@orthomead\nSo I've just recieved two SFDB with graphene sluggos for my two H30A amps.\u00a0 Installed them and waited for the magic.\u00a0 Nothing, zippo, nadda.\u00a0 Using a selection of very familiar music, I did the A-B testing over and over, but was unable to hear any difference between the stock wire fuse and the sluggo.\nI'm not really surprised\u00a0 as math and science both show that the wire fuse (15 amp slow blow) already allows significantly more current than my amps demand.\u00a0 And the real issue is the potential voltage drop.\u00a0 The difference there could be measured in 10's of millivolts.\u00a0 Undetectable in our hearing.\u00a0 The fact that the solid copper Sluggo has the ability to pass more current than the stock wire fuse is a non issue as the amp does not draw it.\nI'll use this analogy.\u00a0 If you were baking a cake that required 1 cup of milk, and you bought 1 quart, you would have all the milk you need.\u00a0 Buying a gallon of milk won't make your cake any better.\u00a0 You'll just have a lot of leftover milk.\nI'm glad you are happy with your purchase.\u00a0 I suspect it's mostly confirmation bias as the science just doesn't support your observations.\u00a0 Cheers.\northomead\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n211 posts\n10-30-2025 at 01:28am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@bigtwin\nI'm surprised you have hear no difference at all. \u00a0I've used multiple sluggos in my SDFB and each have a unique sound. \u00a0I started with brass, which was way too hot for my system. \u00a0The gold infused copper has the more mellow sound. \u00a0Honestly, with time, I switched from the graphene back to the gold infused copper. \u00a0The graphene was a little too fatiguing for me. \u00a0So, I'm not sure that confirmation bias is present because each of these slugos have their own personality. \u00a0If you are unhappy, you should take this up with Mark. \u00a0I do believe there is a satisfaction guarantee. \u00a0I still like mine and they remain in my system.\nzeal\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n181 posts\n02-25-2026 at 08:27am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHas anyone tried the SDFB with a Hegel H390. Is it worth it and what improvments were there?\nfiesta75\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,548 posts\n02-25-2026 at 10:49pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHmm, 4 posts about this subject. Someone will surely respond.\northomead\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n211 posts\n02-26-2026 at 12:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have not tried that combo. \u00a0But, I recently upgraded my amps to VAC 300 monos. \u00a0Once set up, I listened to it with the stock fuse. \u00a0Seemed overly bright and fatiguing. \u00a0I changed back to the SDFB with gold infused copper and there was a world of difference in improvement. The etched highs were gone and the mids were in full bloom again. \u00a0It seems to me that that for your system it will be worth the experiment, since I believe there is a money back guarantee, at least there was when I purchased them. \u00a0Also, you can fine tune the sound with different types of sluggos.\nMore to discover\nSwiss Army Knife of audio discs\nGryphon vs Swiss solid state amps and...\nBest practice replace Swiss AC wall s...\nSwiss Digital Fuse Box - \"What headro...\nShiva Speakers. Now known as Stoll Au...\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nVandersteen Model 2c ii signature\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"For Swiss digital fuse box owners","url":"https://forum.audiogon.com/discussions/for-swiss-digital-fuse-box-owners"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197365-157137\nEdit\nAftermarket Sitches\nHas anyone installed (or had installed) an aftermarket mains switch for their amp? If so just curious about style, brand, and model you went with and why. Thanks in advance.\nscottya118\n01-29-2026  9:21pm\n1 response\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nkennyc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,146 posts\n02-23-2026 at 06:34am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@scottya118\nYou misspell \u201cS\nitch\u201d in your Title\nA \u201cswitch\u201d usually means \u201cnetwork switch\u201d which is a recent audiophile topic\nMaybe a better Title \u201cSeeking to change a Amplifier Power Switch, advice needed\u201d\nMore to discover\nAftermarket Sitches\nFocal 36 MONTH FINANCING\nBricasti M5\nAyon Audio S-10IIxs\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Aftermarket Sitches","url":"https://forum.audiogon.com/discussions/aftermarket-sitches"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197586-137321\nEdit\nPuccini CD/SACD player disc error\nPurchased this unit recently from friend who included a hybrid Allman brothers CD with sale.\u00a0 The unit will play regular CDs with no problem but I have only been able\nto get the hybrid CD to load a couple of times.\u00a0 Now it just gives me a disc error message.\u00a0 I've tried a few blasts of air which didn't help.\u00a0 I have another new hybrid CD arriving soon so I can eliminate the CD as the issue.\u00a0 The laser was replaced 7 years ago with limited use so I am thinking the laser is fine.\u00a0 Any ideas?\nI've contacted DCS but thought I would ask here too.\u00a0 I am hoping to locate a tech locally in the Chicago area rather than ship it.\u00a0 Also how does one remove the top\ncover?\u00a0 I've done work on vintage receivers so I am careful when it comes to taking things apart.\u00a0 Thanks\nkvh1\n02-17-2026  1:27pm\n3 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n02-17-2026 at 06:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI don\u2019t know your particular unit, when I was buying used ones, I discovered: there are two lasers, usually finding the SACD layer is harder to adjust and goes bad 1st,\nThere was a firmware update, was it done? Perhaps a subsequent upgrade?\nhttps://www.stereophile.com/content/dcs-puccini-sacd-playback-system-dcs-puccini-v120-firmware-upgrade\nexcerpt\n\"When I reviewed the Puccini, it was running v1.12 of the firmware. Last April I received an early version of the v1.2 firmware, in the form of a Zipped WAV file (footnote 1). The firmware upgrade is performed by burning the unpacked WAV file to CD-R, then playing it in the Puccini. The process is pretty much automatic, though it does take about 30 minutes.\"\nkvh1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2 posts\n02-17-2026 at 07:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks for the info.\u00a0 I believe it has 1.41 firmware.\u00a0 Think there is a\n2.0 firmware but in order for me to get that the hardware has to be upgraded.\nkvh1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2 posts\n02-22-2026 at 12:31am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI am now able to play hybrid CDs.\u00a0 I found that letting the player warm up\nfor 30 minutes does the trick.\u00a0 Regular CDs load without a warm up.\nIt doesn't mention this in the manual.\u00a0 I wonder if anyone else has experienced\nthis with a Puccini or other player?\nMore to discover\nLinn Majik vs Puccini vs Anthem 1 ADVICE\nDCS puccini+clock or spectral 4000\nwhich DAC is comparable with DCS Pucc...\ndCS Puccini Clock\ndcs Puccini break-in\nAurender N100H\nVandersteen Model 2c ii signature\nAntipodes Audio K40\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Puccini CD/SACD player disc error","url":"https://forum.audiogon.com/discussions/puccini-cd-sacd-player-disc-error"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197614-214267\nEdit\nWhat do you all make of this psuedo-science\nhttps://www.tomshardware.com/speakers/in-a-blind-test-audiophiles-couldnt-tell-the-difference-between-audio-signals-sent-through-copper-wire-a-banana-or-wet-mud-the-mud-should-sound-perfectly-awful-but-it-doesnt-notes-the-experiment-creator\nThe Experiment\nThe goal was to see if listeners could distinguish between a high-quality original audio file and versions of that file that had been \"re-recorded\" after being passed through different conductive mediums:\nOriginal CD File\n(The control).\n180cm of Professional Copper Wire\n13cm of Banana\n(connected via 120cm of copper).\n20cm of Wet Mud\n(connected via 120cm of copper).\nThe Results\nAfter a month of testing with 43 participants (many of whom consider themselves audiophiles with high-end equipment), the results were:\nIdentification Rate:\nOnly about\n(6 out of 43) of the guesses were correct.\nStatistical Significance:\nThis is actually\nlower than random guessing\n(which would be 25% for 4 options). Tom\u2019s Hardware noted that there was a 6.12% chance of getting these results by accident, meaning the data is consistent with people simply guessing.\nThe \"Mud\" Surprise:\nThe creator of the test noted, \"The mud should sound perfectly awful, but it doesn't.\" Most listeners couldn't reliably tell it apart from the professional copper wire or the original digital file.\nWhy does \"Mud Audio\" work?\nThe physics behind this is simpler than it sounds:\nResistance:\nBoth mud (due to water and salts) and bananas (due to potassium and moisture) are conductive. While they are\nworse\nconductors than copper, at the \"line level\" (the low-power signal between a player and an amp), they mostly just act as a\nresistor\nSignal Integrity:\nA resistor reduces the volume (gain) slightly but doesn't necessarily distort the frequency response or add noise in a way that the human ear can easily detect over short distances.\nThe Conclusion:\nThe experiment reinforces a long-standing skeptical view in the audio world: while shielding and build quality matter for cables, the \"exotic materials\" used in expensive high-end cables often provide no audible benefit over basic conductors\u2014even if that conductor is a piece of fruit or dirt from the backyard.\nI realise the being the \"best of the average\" is not the same as the comparing the mud, banana, \"hi-grade copper\" may not be the same as a \"high-end\" interconnect or speaker cable. But I do wonder if there is a price point when we get negative return in regards to sound quality. When I do the AB testing at home or in a shop (blind AB testing's) I rarely hear a significant difference and usually not one worth an extra $1000+.\u00a0 I know it is horses for courses with this hobby and appreciate that.\njspnz\n02-19-2026 11:41pm\n6 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nPost removed\nFeb 20, 2026\nPost removed\nFeb 20, 2026\nfastfreight\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,326 posts\n02-20-2026 at 11:45am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBananas peel back the noise.\u00a0 \u00a0Mud slathers you in ambiance.\u00a0 Just a guess.\nkofibaffour\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n726 posts\n02-20-2026 at 09:22pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nit is not pseudo science.\u00a0 it is very valid and coming to this conclusion about cables frees your mind for actual useful changes that bring tangible and useful benefits to your system.\nYour room is such an imposing element that any supposed cable benefit get drowned out by the room issues. so unless you fix the room, you ain\u2019t hearing any supposed cable changes\nI did the correct thing of approaching this from a physics standpoint and it saved me years of whack-a-mole\nsold my cables, bought two Captivator RS1s and dug into DIY bass traps and ceiling clouds and all the issues the cables didn't solve, vanished\nlogistics\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n72 posts\n02-20-2026 at 11:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAll recordings are re-recorded.\u00a0 And a master is just some engineers idea of what it should sound like or in partnership with the producer.\u00a0 But if you decide that is what should sound best to you, as in the baseline, you've already failed yourself in audio.\u00a0 We dont hear alike, and you should do whatever you want to make a recording sound better to you, even if that means EQ'ing, because your ears decide, not a guy from the past, sitting at a mixing board.\nrichardbrand\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,544 posts\n02-21-2026 at 11:26pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nRichard Feynman, the great US physicist, described science as an\ncceptable philosophy of ignorance\n.\u00a0 We have to be comfortable knowing what it is that we don't know.\nWhat we do know of this experiment is that the starting point is\ndigital data\nstored on a CD, being transferred to a\ndigital\nfile.\u00a0 Most likely, the data transfer has end-to-end error detection\nand recovery\n.\u00a0 CDs can have 4,000 consecutive bits wrong, yet the original data can be reconstructed perfectly, thanks to Cross-Interleaved Reed-Solomon coding.\u00a0 \u00a0In reality this means\ncompletely error-free\n- something relied on every time software is distributed on CD.\nThe experimenter has not told us precisely what input and outputs were used, or what protocols were used for the digital file transfer.\u00a0 But it is reasonable to assume computer-grade error detection and recovery at every stage of the transfer.\nA computer can be easily programmed to determine if there is any bit variance between two files.\u00a0 It is reasonable to deduce that the listeners were exposed to bit-perfect copies, no matter whether bananas or wet mud formed part of the transmission chain.\u00a0 No wonder they could not guess a difference.\nIt is worth mentioning that the input impedance is likely more that 10,000-Ohms which swamps the likely impedance of a wet banana!\nCaveat\nNow this result\ncannot possibly be extrapolated\nto wires carrying\nanalogue\nsignals, or to wires carrying digital signals which are\nerror corrected (I am thinking\nhere, but\nUSB streaming\nEthernet without error correcting protocols\nare also guilty).\nMore to discover\nWhat do you all make of this psuedo-s...\nFocal 36 MONTH FINANCING\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10IIxs\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"What do you all make of this psuedo-science","url":"https://forum.audiogon.com/discussions/what-do-you-all-make-of-this-psuedo-science"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192796-2444\nEdit\nAudioquest vs. Blue Circle Power Conditioner Quality\nI have a Blue Circle FX2 6 XOe Power Line Conditioner from about 10 years ago. Only conditioner I've ever had. The reviews at the time for BC products were outstanding, saying these easily competed with other brands at many times the price. Unfortunately, BC has closed down, but their owner is still active in a newer company.\nI'm interested in an AQ Niagra 1200 that I can get at a good price, but not sure if it will have any advantages over the BC.\nGilbert from BC was sort of a mad scientist guy who really pushed the technical limits of his products, but AQ is a bigger company with likely much better research/test/manufacturing capabilities.\nIs anyone able to speak to the differences between these units, if one is better than the other?\nThanks.\njaybe\n01-17-2025  1:49pm\n4 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ngdnrbob\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,520 posts\n01-18-2025 at 12:13am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have no experience with Blue Circle, but I do own the Niagra 1200 (Actually two).\nIt is the entry model of the AQ power conditioning line. It was introduced when Garth Powell came to AQ and I have to say he really made some great contributions to the AQ line since.\nWhether it will perform 'better' than the Blue Circle is something you'd have to determine for yourself, unfortunately.\nI do have a review of the Niagra vs. PSAudio-\nhttps://positive-feedback.com/reviews/hardware-reviews/audioquest-niagara-5000-ps-audio-p20-directstream-power-plant/\njaybe\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n866 posts\n01-18-2025 at 12:39am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@gdnrbob\nThanks for that. Great article.\nI now recall that I bought a used PS Audio Perfect Wave P3 about five years ago. It was in my system for about a week, then I sold it and went back to the Blue Circle. I don't remember why exactly, but there seemed to be less \"life\" to the music with the P3.\nIt's possible with a bit more tweaking it might have been better, like how they treated the conditioners in your linked article.\nhifiguy42\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n390 posts\n01-18-2025 at 03:27am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI also use a Niagara 1200 with a Blizzard power cable and it has performed well in my system.\npatrickdowns\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n558 posts\n02-20-2026 at 06:06am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have the\u00a0Blue Circle FX2 6 XOe Power Line Conditioner since about 2018 and have been very happy with it, and it was a steal at $500. I've been reading reviews of other recommended conditioners lately, thinking up upgrading, like AQ Niagara, PS Audio Re-gen etc, but the prices take my breath away! $3-6K? I'm very frugal, and not willing to have death by 1000 paper cuts.\nReview from PF of the Blue Circle:\nhttps://positive-feedback.com/reviews/hardware-reviews/blue-circle-fx2-6-xoe-power-line-conditioner/\nMore to discover\nNeed power amp suggestions for ProAc ...\nFlexible Power Cords\nCLASS A POWER RATINGS\nMating power cords with APL 3910\nMichell Engineering GyroDec Power Sup...\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nVandersteen Model 2c ii signature\nAntipodes Audio K40\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Audioquest vs. Blue Circle Power Conditioner Quality","url":"https://forum.audiogon.com/discussions/audioquest-vs-blue-circle-power-conditioner-quality"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197489-178702\nEdit\nA Whisker\nRecently, my stereo system has started \"clipping\" especially when complex treble gets rolling, or when raucous transients are present. Sussing this out has been tedious. This issue only reared its head recently. My first suspicion was and continues to be \"impedance mismatch\" but why would that suddenly show up after a nearly a year of no clipping with this existing setup? (I use SE interconnect cables throughout - not xlr's. XLR cables just make it worse.) The power amps are Audion Mk3's. My first suspicion was that they could be the issue, but they have been in the system for nearly a year with no problem.\nWhen playing relatively \"soft\" albums such as James Taylor's \"October Road\" (which has dynamic passages as well) no issue. As soon as clipping begins I put the CD player in \"pause\" for a few minutes, and the clipping stops from there on out to the end of the song.\nThe component line-up:\nJay's Audio CDT3 MK3 CD Transport\nHolo May KTE DAC\nPrimaluna EVO 400 Tube Pre\nAGD Audion Mk3 Class D Amp\nKlipsch Cornwall 4's\nThis system has always sounded wonderful.\nInitially I feared it was a speaker problem, but connected my old Forte 3's and Heresy 3's and had the same clipping. The odds of all 3 having damaged tweeters or damaged control boards is pretty low. In normal playback with the Cornwalls the treble performance is just as good as it always has been.\nI did just discover something interesting. In tightening up a loose RCA speaker terminal on the back of the preamp which can only be tightened by removing the underneath dust cover to get at the backing nut I discovered between the hot and ground a very thin and broken wire that was originally bridging the hot and ground. It is still attached to the ground/ The problem is that getting at this little wire with a soldering iron is very tricky \u2013 almost impossible really. The solder joint on the hot terminal is not a simple solder point but a little fastening with two opposed wedges/ I could hire a pro electronics repair shop to do this, but that would put me out of music for awhile.\nWhat say you, techies?\nbolong\n02-07-2026 10:37pm\n8 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nfiesta75\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,548 posts\n02-08-2026 at 07:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNormally I start at the output and work backwards, but in this case I would start at the input. Try a different source. If all you have as a source is the CD player and Dac, then use the internal CD player Dac and go from there. Substitute until you find the real culprit. I personally think you are looking for a problem in the wrong component.\nbolong\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n966 posts\n02-08-2026 at 11:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHave substituted out everything but the Audion power amp. My Primaluna power amp will not power up without making a racket. I have no other power amps to substitute. Will have to borrow someone's\u00a0 for that final component substitute. I used to play the Primalunas LOUD sometimes. Could be something finally blew up in the Primaluna power amp and is about to blow up in the Primaluna pre. They were both subjected to what may have been loudness abuse for about 4 years.\nThanks for your help.\nbolong\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n966 posts\n02-12-2026 at 02:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPassive Stereo Inline Variable Audio Attenuator\nWell, this little gadget above solved the impedance mismatch between the Audion's and the tube preamp. Typically, if the preamp volume control knob at loud listening will not reach the \"9 o'clock am\" position on the volume control knob then your amp probably has too much gain which is what can cause clipping, The knob on my preamp before attenuation routinely stayed at around the 7 o'clock am position even at loud.listening levels. In my situation I found the sweet spot of attenuation on the selectable dial to be at the 9 db level on the attenuator dial. The fun part is that the decibel settings can be tweeked on the fly depending on the album or song\nThe further fun part is that this affords yet another way to alter the sound of your system in general. Higher decibel settings will somewhat roll off the music and vice-versa at the lower settings. I was concerned that the somewhat rinky-dink construction of the attenuator might ruin tone overall, but it appears not to be doing so.\nAttenuation is Audiophile 101, but I did not know of such easy work-arounds, and I have seen posts on this forum describing gain issues and clipping here and there to the befuddlement of the poster.\nIdeally, I want an attenuator with finer settings because there is a sense that the best setting for any given album of song might be somewhere\nbetween\nthe dial settings on this attenuator.\nfiesta75\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,548 posts\n02-13-2026 at 05:19am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks for the update. I'm glad you didn't have to get into the preamp and do any delicate soldering. I will remember your solution should I encounter a similar problem in the future.\nbolong\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n966 posts\n02-14-2026 at 04:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYeung's Variable Attenuator\nHere is what I was looking for - an infinitely adjustable attenuator.\nfiesta75\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,548 posts\n02-14-2026 at 08:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBolong - thanks for the suggestion. I probably would not have found the variable attenuator from Yeung. His audio products are VERY highly regarded in my opinion. Another true genius!\nbolong\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n966 posts\n02-19-2026 at 04:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n-12 db line level attenuators\nNow I have thrown these at the issue. These attenuating \"spikes\" have differing effects - in my situation they increase bass punchiness but also ever so sllghtly decrease \"decay.\". Waiting to see if they will \"break in\" and yield different effects.\nIn the meantime all \"clipping\" has ceased in my system. It is so nice to once again be able to listen such albums as Theesink's \"Songs of the Southland\" at full volume without the nerve-rattling suspense of clipping looming about.\nSome techies suggest attaching these at the power amp end - not the preamp end- and that is what I am doing.\nbolong\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n966 posts\n02-19-2026 at 08:10pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAfter going through a bout of \"clipping\" it occurred to me that an enhancement to \"sound torture\" as practiced by certain intelligence entities for instance would be to introduce \"clipping\" into the music as well. Twenty four hour per day loud obnoxious music that clipped as well. This would be the ultimate in torture.\nMore to discover\nA Whisker\nMetal \"whiskers\" on cartridge body\nVandersteen Model 2c ii signature\nVolumio Primo Plus\nAurender N100H\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have","title":"A Whisker","url":"https://forum.audiogon.com/discussions/a-whisker"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197565-139155\nEdit\nAudio Break in Video\nReally interesting video on \"break in\" in various areas\nhttps://youtu.be/MPy_Gqxm-iQ?si=4oA-I9ThiN1bhmtD\n\"The video discusses the controversial topic of \"break-in\" for audio equipment, specifically speakers and amplifiers (0:00). Many audiophiles and manufacturers claim that new gear needs hundreds of hours to \"open up\" and sound its best, often comparing it to breaking in new shoes (1:17).\nSummary\nSpeaker Break-in (1:53): The theory suggests that a speaker's suspension components (surround and spider) are initially stiff and loosen with use (2:25). This supposed loosening allows the cone to move more freely, resulting in deeper bass, smoother highs, and clearer mids (2:54). While physical changes in speaker suspension can be measured, these changes are often negligible and occur very quickly, within minutes or an hour, not hundreds of hours (5:36).\nAmplifier & DAC Break-in (13:19): For electronics like amplifiers and DACs, the break-in theory points to capacitors \"forming\" or circuits \"settling in\" (4:13). However, there's no solid evidence to support long-term audible improvement over extended periods (13:58).\nThe Case Against Break-in (5:27): The video argues that the perceived improvements are largely due to human psychology (8:04). This includes:\nListener Adaptation (8:28): Your brain adjusts to the new sound signature over time, making what initially sounded \"weird\" eventually sound \"right\" (8:48).\nPlacebo Effect (9:01): Expectation of improvement, especially after spending a lot of money, can literally make you perceive better sound (9:05).\nConfirmation Bias (9:40): Actively seeking evidence to confirm a belief (like break-in) leads to noticing subtle details that reinforce the idea (9:48).\nBusiness Case for Break-in (10:38): Manufacturers recommend break-in not necessarily because of objective physical changes, but as a clever marketing and customer management strategy (10:50). It gives customers time to adapt to the new sound and convinces them that any initial dissatisfaction is just part of the \"process,\" thereby reducing returns (11:28).\nWarm-up is Real (14:06): Unlike long-term break-in, the short-term warm-up of electronic components is real and measurable. Transistors and tubes have ideal operating temperatures, and their performance changes as they heat up (14:08). This warm-up effect might be mistaken for long-term break-in (14:39).\nIn conclusion, the video suggests that while some minimal physical changes occur in speakers quickly, the dramatic, long-term \"break-in\" phenomenon is overwhelmingly a psychological effect (15:46). The video advises listeners to simply use their new gear and allow their brain to adapt to the sound, as the real \"break-in\" happens in your own perception (16:42).\"\nhilde45\n02-15-2026  3:34pm\n9 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nlarsman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,218 posts\n02-15-2026 at 04:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nInteresting discussion! But if I buy a pair of headphones that sound lousy out of the box, which many do, and put 'em on the back of a chair without listening and playing music through them for 150 hours or so (the manufacturer's recommendation for break-in time), then listening again and they sound far, far superior, that would have nothing to do with allowing a brain to adapt to anything.\nIn my experience\n, this happens with headphones and it happens with speakers, and it often DOES take that long. Some speakers require very little break-in time, others require a great deal.\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,788 posts\n02-15-2026 at 06:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIn my experience\n, this happens with headphones and it happens with speakers, and it often DOES take that long.\nUnless this is done blind, it is highly susceptible to expectation bias.\nbassbuyer\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n947 posts\n02-16-2026 at 01:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMany manufacturers recommend break in.\nkerrybh\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n719 posts\n02-16-2026 at 02:13pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThis is always good for a debate. FWIW, I think headphones are likely to change the most with breaki-n, then speakers and carts-mechanical things. I've never noticed any significant changes with electronics, but many perceive (which is a bit broader than hear) big differences, and we all are entitled. to our POV.\nThere is not much doubt, at least to me, that our brains do adjust and accommodate, the placebo affect is a real thing, etc.,-these are well-established concepts. Even so, audiophiles tend to discount or ignore these factors because we can't control them-we like the idea that we are in control-and these concepts sometimes challenge audiophile orthodoxy or the idea that we are blessed with unusual powers of aural discernment. The ensuing cognitive dissonance can be avoided by simply ignoring these possibilities.\nWhen this topic comes up, it occurs to me that there is no need for gnashing of teeth because, either way, there is nothing you can do about it.\nFor me, warm-up is a different thing-my system seems to sound better after about 15 minutes. That could have a psychological component as well, just my perception. Regardless of opinion, I would not keep a new component that was unsatisfactory beyond the return period waiting for it to \"break-in.\"\nknotscott\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,430 posts\n02-16-2026 at 03:47pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHaving built a couple of hundred pairs of speakers, my view is that new speakers change within the first several hours of being played, and beyond....the amount of time is a variable, but isn\u2019t imagined IME.\u00a0 \u00a0Very few woofers meet spec right out of the box, but benefit from being played.\u00a0 \u00a0Good poly caps in crossovers burn in and take even longer than woofers to come around and sound as expected...sometimes dozens of hours. \u00a0I\u2019ve never noticed a difference between new and older resistors or inductors, but most definitely have with caps. It\u2019s a slow and almost imperceptible process at any given moment, but the total before and after effect is more dramatic...it\u2019s a crucial aspect when making design changes. The little things matter, and are cumulative.\nPlacebo effect and/or expectation bias get broadly applied too easily and too often when some subtle changes occur that are difficult to measure, hard to explain, or even hear in the short term.\u00a0\u00a0These biases don\u2019t explain changes that I don\u2019t like.\u00a0 Even though I strongly wanted the change to be positive, sometimes they\u2019re just not for the better.\u00a0 I\u2019m not saying that some expectation bias doesn\u2019t exist, but it seems to me that it\u2019s temporary until I get familiar with something over a period of time.\u00a0 There have been many times that I thought I was pretty happy with some change or new component (like a DAC), only to start hearing some aspect that I didn\u2019t like, and couldn\u2019t \"unhear\" going forward.\u00a0 Long term listening on a system I know well tells me more than a quick listen at any given point in time.\nlarsman\nDetails\nDiscussions\nPosts\nThis disc","title":"Audio Break in Video","url":"https://forum.audiogon.com/discussions/audio-break-in-video"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197553-139155\nEdit\nUsing Claude (or other) AI to design a systematic amp comparison protocol\nI had a great exchange with AI today about my audio trials of a class D amp. Here is a summary of what it advised. Possibly of interest.\nClaude:\n\"I have 20 days to decide whether to keep a TRIAL CLASS D amp amplifier or return it, and I needed to compare it against a borrowed Hypex DIY amp and my Pass amp, using both solid-state and tube preamps. The problem was figuring out how to do meaningful comparisons without getting lost in endless testing or relying on faulty auditory memory.\nI asked Claude to help me design a testing protocol. I started with my basic idea\u2014compare all the amps with both preamps\u2014and Claude helped me think through the methodology more carefully. It pointed out issues I hadn't considered, like auditory memory decay making day-to-day comparisons unreliable, the importance of controlling for listening order bias, and why I should test the two Class D amps against each other first before bringing the Pass into the picture.\nThe back-and-forth was really helpful. Claude initially suggested some things that were too complicated (three amps per day), and I pushed back. It also caught an oversight I made about not comparing the Pass with the tube preamp. We went through several iterations, and I kept asking it to revise based on what would actually be practical for my schedule and listening stamina.\nWhat we ended up with was a progressive elimination structure: Days 1-6 compare TRIAL CLASS D amp vs Hypex with both preamps, with built-in order reversals to control for bias. If the TRIAL CLASS D amp doesn't beat the Hypex, I'm done\u2014return it. Only if it survives does it earn the right to be compared against the Pass for another 6 days. The protocol includes specific note-taking templates for each session, decision checkpoints, and early exit options if results are clear.\nClaude also emphasized things I might have glossed over\u2014like limiting to just 3 reference tracks for consistency, taking real breaks between listening sessions, and writing notes after (not during) each session. It created a complete 12-day schedule with dates, checkboxes, and decision trees, formatted as a printable RTF document I can mark up as I go.\nIf you're facing a similar decision with gear comparisons, I'd recommend trying this approach. You basically describe what you're trying to figure out, let Claude ask clarifying questions, push back when something doesn't fit your situation, and iterate until you have a plan that makes sense. It's like having a conversation with someone who understands experimental design and can help you think through the methodology without getting emotionally invested in the outcome.\nHOW DOES IT KNOW? WHAT IS THE SOURCE OF THIS ADVICE?\nWhen I asked Claude about its sources, it explained that the methodology draws on research in psychoacoustics (like studies on auditory memory decay), experimental psychology (order effects and position bias in preference testing), and sensory evaluation methods used in fields like food science and wine tasting. The general principles about counterbalanced presentation, same-day comparisons for better memory retention, and progressive elimination structures come from established experimental design practices across multiple domains.\nThe audio-specific knowledge comes from Claude's training on technical literature and enthusiast discussions over many years, though it can't cite specific papers. It mentioned that if you want to dig deeper into the research foundations, look into the psychoacoustics literature on auditory discrimination, sensory evaluation work on paired comparison testing, and audio researchers like Floyd Toole and Sean Olive at Harman who've published extensively on listening test methodology.\nClaude was also transparent that some of the practical details\u2014like the specific session lengths (30-40 minutes), break durations (15 minutes), and when to take notes\u2014are more informed heuristics based on how human attention and fatigue work rather than being pulled from rigorous audio testing protocols. So it's a mix of research-backed principles and reasonable practical judgments about what makes testing sustainable and reliable.\"\nhilde45\n02-14-2026  2:52pm\n8 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n02-14-2026 at 03:14pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI am glad you had such a productive exchange.\u00a0 I caution you that Claude and ChatGPT turn evil without warning.\u00a0 By this I mean that you are happily having what seems to be fact-based, productive conversation when you realize that it\u2019s making things up, stating with CERTAINTY things are facts which may have exactly 1 source and that source is poor or no source at all, and start responding to stroke your ego more than to help you get going.\nIt almost always replies with \"That\u2019s a great idea!\" or \"That\u2019s the thing that pulls it all together...\" and it\u2019s all BS.\nhilde45\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,101 posts\n02-14-2026 at 05:36pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@erik_squires\nI realize that. Thanks. I use it to help with permutations and with subjects I have some preexisting knowledge. For other things, I ask for citations and sources.\nThe hallucination errors you cite have become a prejudice for many, preventing them from making some very good use of these tools. Perhaps that is good (for the environment) but it also perpetuates misunderstandings of the tools\u2019 uses. Smart prompts and careful vetting of answers is a prerequisite for getting something out of AI, or really any other tool.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n02-14-2026 at 05:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nA prejudice is an\nopinion that is not based on reason or actual experience.\nThis is not what I have.\nHow Claude and other AI tools misbehave is a known behavior pattern, something I know from personal experience AND reading the experience of others.\nThe belief that a smart prompt will shield you from AI scheming has been shown to not be true. At best, smart prompts with constant checking of sources needs to be done.\nDespite these known failure modes I continue to leverage them.\u00a0 That doesn\u2019t mean I pretend they don\u2019t fail.\u00a0 \u00a0If you want a fascinating read, look for \"scheming\" in AI models, what it means and attempt to reduce it.\nThe reason I say they turn \"evil\" is because I've several times been getting really good information and then from one sentence to the next I'm getting fake data, with no lights or buzzers or contextual warnings, and this is what can trip you up.\njperry\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,542 posts\n02-14-2026 at 06:31pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFascinating that you don't seem to trust your ears to make these decisions.\nhilde45\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,101 posts\n02-14-2026 at 08:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDidn\u2019t say you had a prejudice. Many people do, though. Didn\u2019t mean to imply it was you.\nThe belief that a smart prompt will shield you from AI scheming has been shown t","title":"Using Claude (or other) AI to design a systematic amp comparison protocol","url":"https://forum.audiogon.com/discussions/using-claude-or-other-ai-to-design-a-systematic-amp-comparison-protoc"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197508-139155\nEdit\nExcellent youtube channel \u2013 Analogholic Reviews\nI've found this channel to be very informed and informative.\nEngineer and audiophile, he speaks to the layperson but with an underlying understanding of how equipment works and how they combine into a system.\nttps://www.youtube.com/@analogholic_reviews\nHere's one example of his clear, interesting, and concise explanations \u2013 this one is about how Class D amps work.\nhttps://www.youtube.com/watch?v=m6iFW7xUclc\nhilde45\n02-09-2026 12:54pm\n4 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nbillstevenson\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,319 posts\n02-09-2026 at 02:47pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThank you for that link.\u00a0 It is excellent.\u00a0 I can attest from my own experience that what he says about Class D amps is true.\u00a0 In my main system in Florida, the amplifier is a Class A tube amp.\u00a0 Conrad Johnson 27A.\u00a0 It is an exemplar of the type.\u00a0 Last year I bought a Class D amp for my second home in New Hampshire.\u00a0 It is a Marantz PM10, Hypex based, and was being sold on close out.\u00a0 I compared both amps in Florida extensively using my Conrad Johnson 88 line stage and a variety of source material including vinyl and cd.\u00a0 For all practical purposes the two amps sound very similar (the differences are vanishingly small).\u00a0 The difference between them lies more in the speakers they drive and the respective rooms each resides in.\nthecarpathian\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,296 posts\n02-09-2026 at 03:14pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@billstevenson\nYou need to switch out amps. Use that Class A to help heat your New Hampshire house!\nbillstevenson\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,319 posts\n02-09-2026 at 04:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThere is something to what you say, it was -11 F last night.\u00a0 However, the speakers up here are B&W 802 Diamonds, a difficult load, and the PM10 handles them without any trouble at all.\u00a0 Actually the designer of the amp, Ken Ishiwata, used 802s when he was developing the amp and matching SA10.\u00a0 Eventually the C-J stuff might migrate up here as we are getting mighty fed up with Florida.\u00a0 Part of why we are here now in the winter, it is just beautiful here.\u00a0 We can handle the cold.\nhilde45\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,101 posts\n02-10-2026 at 02:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nInteresting comments! Thank you,\n@billstevenson\n-- articulate and analytical as usual!\nMore to discover\nAlbum Reviews\n123 Reviews All 5\"s For Odyssey\nSix Moons charges for reviews?\nTurntables and Trusting Online Reviews\nhttp://supplement4reviews.com/keto-ra...\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nRSX MUSIC SERVER RSX MUSIC SERVER\nVolumio Primo Plus\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Excellent youtube channel \u2013 Analogholic Reviews","url":"https://forum.audiogon.com/discussions/excellent-youtube-channel-analogholic-reviews"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n191946-197971\nEdit\nIssue with Krell KSA-250\nHello-\nIt's been a minute since I've been on the forums here, but I'm glad they are still around!\nI am the second owner of a Krell KSA-250 amplifier. For the past 10 years it hasn't given me any problems. Then today, when I turned it on, it emitted a rather loud buzzing sound. This wasn't coming from the speakers (like a ground loop hum), this was a very startling almost \"mechanical\" buzz sound. The buzz does not stop until I turn the unit off.\nI'm not sure where to start. I called my local audio repair store, but they don't work on Krell. They suggested I contact Krell, which is my next step, but seeing as I'd have to freight this for it to be repaired, I'm hoping someone here might shed some light on what's happening. I've made a short 15-second video of the issue, but I don't think I can upload it here. I'm happy to provide it though.\nAny thoughts you might have would be appreciated.\nThanks,\nBlake\nblakeh\n11-12-2024  9:15pm\n50 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nstereo5\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,728 posts\n11-13-2024 at 12:32am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou may not be able to send it to Krell. \u00a0There is a thread where a customer sent his amp back for repair and 9 months later, he still hasn\u2019t gotten it back. \u00a0The owner of Krell passed away and the company has been closed to grieve. \u00a0The person said no one was answering the phone.\nblakeh\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6 posts\n11-13-2024 at 02:42am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks for the response. After I posted this message, I saw on Krell's FB page that they had essentially closed after the death. It looks like they are slowly opening up again, but I'm guessing there is a backlog, so it may not be the best choice to send it to them.\njasonbourne71\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,904 posts\n11-13-2024 at 08:02am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt's the power transformer. Can you still play music through the speakers?\nwillcycle\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n55 posts\n11-13-2024 at 11:07am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe problem is probably the transformer drawing a lot of current.\u00a0 Are the heat sinks getting hot fast?\ninvalid\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,390 posts\n11-13-2024 at 11:12am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThough I wouldn't rule out the power transformer, it's more likely to be a bad capacitor.\ninvalid\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,390 posts\n11-13-2024 at 11:12am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThough I wouldn't rule out the power transformer, it's more likely to be a bad capacitor.\njasonbourne71\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,904 posts\n11-13-2024 at 12:54pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCaps don't buzz! Transformers do. That amp needs a new transformer.\njasonbourne71\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,904 posts\n11-13-2024 at 12:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSince the AC fuse didn't blow it is not drawing excess current.\njayctoy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,659 posts\n11-13-2024 at 01:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy plinius did exactly the you are describing OP all I did check the power cord and it\u2019s loose. Problem solve.\nretiredfarmer\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n363 posts\n11-13-2024 at 02:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI upgraded\u00a0 the power service\u00a0 into my house to a 200 amp service.\u00a0 Anyhow every system\u00a0 in the house gained both sound quality\u00a0 and a hum. I got rid of the old wore and went copper all the way. Had the electrician\u00a0 come\u00a0 again and had him check all his connections.\u00a0 He tighten\u00a0 the main ground. It was already\u00a0 tight but he made it tighter and the hum was gone from every system in\u00a0 the house. Above where the fellow says check the power cord that is free and only takes a few minutes\u00a0 if it is not the problem it was free and o ly took a couple of minutes.\u00a0 Sometimes\u00a0 things are that easy and that cheap.\njayctoy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,659 posts\n11-13-2024 at 02:37pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHeavy power cord can turn loose either one iec of the amp or from the wall socket.\njayctoy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,659 posts\n11-13-2024 at 02:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOr if you add new gear next to your amp that can be the source too.My ViVa \u00a0integrated and my Ares denafirips DAC don\u2019t get along. I get hum from my amp and speakers if I will connect the Ares to to viva.Solitions the two got divorce lol.\nretiredfarmer\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n363 posts\n11-13-2024 at 03:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@jayctoy\nJayctoy more good ideas eliminate\u00a0 the cheap easy things first. Sometimes\u00a0 it does get the problem\u00a0 but many times you can find an improvement\u00a0 non the less\nPost removed\nNov 13, 2024\nPost removed\nNov 13, 2024\nPost removed\nNov 13, 2024\njsd52756\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n514 posts\n11-13-2024 at 08:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI had one of those bad babies & had the same issue.\u00a0 I wouldn't turn on again.\u00a0 It needs some serious help.\u00a0 If you can personally deliver in lieu of shipping that would be the best bet.\u00a0 I had mine damaged on the return trip back from service and back it went with zero listening time\u00a0 Sad story indeed.\nContact either\u00a0George Meyer AV in Los Angeles or The Service Dept in Bridgeport, CT for repair.\u00a0 Krell's itself service dept is in a giant holding pattern whilst the company gets sorted out after the owners passing.\nhiend2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n492 posts\n11-13-2024 at 09:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHey make sure the negative and ground are not reversed in the new wiring\nDid that here had ground loop\nblakeh\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6 posts\n11-14-2024 at 02:34am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks so much for all the feedback!\nI have taken the cover off to take a look inside, but I don't see anything immediately wrong or smell anything out of the ordinary.\nI do have a large power cable, and I tried re-seating it both in the unit and in the wall. It didn't stop the issue.\nI haven't added any equipment, but this is 100% something wrong inside the unit. I really wish I could post the video! That would make what I'm trying to describe much clearer.\nI've found a place in Chicago that said they work on Krell equipment. It's about a 75 minute drive, so that will be preferable to sending it off via freight both from a cost and a potential damage standpoint.\nI will not be turning it on again.\nI don't know if the forum will allow me to post a link, but I'll try. Here is a video of the issue:\nhttp://www.stateofgrace.net/krell.mp4\nThanks!\nPost removed\nNov 14, 2024\njayctoy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,659 posts\n11-14-2024 at 01:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOP ","title":"Issue with Krell KSA-250","url":"https://forum.audiogon.com/discussions/issue-with-krell-ksa-250"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197445-174651\nEdit\nWhich to Purchase ?\nLooking for a power supply for my Project Audio RS2 T. Anyone tried the Teddy Pardo MiniTeddy Special Edition 20V / 2A or the Linear Tube Audio power supply for the RS2 T. ? Interested in your findings\naaddmann\n02-04-2026  6:03pm\n2 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\naudi-owe\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n92 posts\n02-05-2026 at 05:38am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHey aaddman,\nI own the Project Audio RS2 T and have it powered by the LTA's LPS+ linear power supply; a PASS X250.8 drives my speakers. Also, a Black Cat Digit 110 AES/EBU connects the Box RS2 to my DAC. The RS2 T has spent hundreds of hours playing sweet music in my space.\naaddmann\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n12 posts\n02-06-2026 at 05:54pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAny reviews on the Teddy Pardo MiniTeddy Special Edition 20V / 2A?\nMore to discover\nWhich component upgrade will produce ...\nWhich best amp to drive my B&amp;W 804s?\nWhich of my components has the better...\nTo ARS Sonum/Merlins owners - Which C...\nWhich DAC processes CD audio - receiv...\nBricasti M5\nAntipodes Audio K40\nVandersteen Model 2c ii signature\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Which to Purchase ?","url":"https://forum.audiogon.com/discussions/which-to-purchase"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195424-111\nEdit\nLAIV Harmony NET2\nDoes anyone know what the new NET2 is? (has not been released yet by LAIV Harmony)\nhttps://www.laiv.audio/store\n08-09-2025  4:13pm\n14 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\njackd\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,133 posts\n08-10-2025 at 12:59am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nStreamer/endpoint\naudiostick\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n128 posts\n08-13-2025 at 04:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOriginally scheduled for release Q3 of this year, now \"TBA\".\u00a0 No appearances at trade shows so far this year.\u00a0 Everyone pretty tight-lipped as to what the status is with this product.\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,825 posts\n08-13-2025 at 08:26pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n\"We are still working hard on the streamer/transport. Things aren\u2019t finalized yet, and realistically it may not be available this year, but we\u2019ll be sure to share news as soon as we have something concrete\".\naudiostick\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n128 posts\n08-14-2025 at 12:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@lak\nThanks for sharing feedback.\u00a0 Hopefully, they are optimizing the operating system.\u00a0 Seems like buggy and hard-to-navigate controllers sink allot of Streamers.\nmario69\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n7 posts\n10-10-2025 at 01:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nJust received, it seems a launch date has not been planned yet\n\"The streamer is still in development, and we\u2019re taking our time to make sure it stands out in both sound quality and user experience. It will indeed support playback from local NAS libraries as well as popular streaming services like Qobuz and TIDAL.\nWe\u2019re also planning to have a dedicated mobile app to make control and browsing seamless. It\u2019s still early, but things are progressing well, and we can\u2019t wait to share more once it\u2019s ready!\"\nPost removed\nOct 10, 2025\naudiostick\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n128 posts\n10-11-2025 at 02:18pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@mario69\nThanks for sharing update from Weng.\n\"It's still early\" kind of sounds to me like it won't be released in 2026 either.\nHope they put a good clock and power supply in it, but keep it in the $3-4k range.\nmario69\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n7 posts\n10-11-2025 at 03:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI just ordered the Harmony DAC, I think I will use my Mac mini with Audirvana meanwhile and connect it via usb\u2026 anybody using this configuration? An alternative could be the Volumio Rivo+ and connect it via i2s\nrjvissers\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n29 posts\n11-08-2025 at 08:41am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@mario69\nI have the Harmony DAC and use a MacBook Pro for streaming. Mostly TIDAL. Connecting the MacBook via USB to the Harmony DAC directly works flawlessly. After a while, out of audiophile curiosity, I also bought the LAIV uDDC (\"microDDC\") and put it between the MacBook and the Harmony DAC for galvanic isolation to remove any USB noise. This is optional. The uDDC gives multiple extra connection options, which is nice as well. I connected the uDDC via I2S to the Harmony DAC.\nmario69\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n7 posts\n11-08-2025 at 11:26am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks\n@rjvissers\n, besides the additional facilities, did you hear any tangible improvements with the uDDC?\nrjvissers\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n29 posts\n11-09-2025 at 01:36am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@mario69\nhe LAIV HARMONY \u00b5DDC is not required to get a great sound from your Mac via USB to the Harmony DAC, but you might experience some noticeable improvements, depending on your setup. If your USB source (e.g. Mac, PC, etc.) is \"noisy\", the DDC will definitely clean that up. If you do not have a highly resolving system, you may not notice. In my setup, it definitely helped with a lower noise floor, darker background, and more air. YMMV. There are also cheaper USB isolators available. I tried iFi and that didn't help. But\nSMSL PO100\n($74, converts USB to optical SPDIF) does work, although not as well as the\u00a0LAIV HARMONY \u00b5DDC. There are others, like\nGUSTARD U18\n(~$500). There are several reviews on YouTube on the\u00a0LAIV HARMONY \u00b5DDC that I would recommend e.g. iiWi, Old Guy HiFi, Passion for Sound, Vinshine Audio, Reviews by Wave Theory, Nemo Propaganda. Hope that helps!\nrfarassat\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n32 posts\n01-16-2026 at 11:54pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have a LAIV Harmony DAC. I was using it with\u00a0Audirvana, but switched to Roon and now playing directly from Roon to USB on my MacBook Pro. I have a separate Roon server where all my music is stored on, and my MacBook is where my Roon client is installed, and this configuration works well. No jitters, issues, break-up, etc. I am also waiting for LAIV Net2, but if it doesn't release soon, I will buy the Eversolo T8 which has pretty good reviews.\nmario69\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n7 posts\n02-05-2026 at 08:43pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHello, did you notice that any mention to the NET2 streamer disappered from the LAiV website? It's all about Crescendo now ... shall we still wait or move elsewhere? (= buy another streamer)\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,825 posts\n02-06-2026 at 12:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI believe we would have to email LAIV and ask them for a time line.\nMore to discover\nCopper\u00aeHarmony RCA Plug - a new breed\nHarmony Remote Control\nEversolo T8 vs Lumin U2 and Laiv Harm...\nAudio Harmony TWO Review\nSignature Freya monitors from Harmony...\nFocal 36 MONTH FINANCING\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nBricasti M5\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"LAIV Harmony NET2","url":"https://forum.audiogon.com/discussions/laiv-harmony-net2"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197394-178702\nEdit\nCERN's 2026 Run Just Detected a Particle That Reacts to Human Presence\nCERN's 2026 Run Just Detected a Particle That Reacts to Human Presence\nWhat are the implications for our Musical Accelerators?\nbolong\n01-31-2026  9:13pm\n8 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n02-01-2026 at 12:27am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThere is no article source for this video.\nThere is a flows of A.I. bot on X and in youtube...\nThere will soon be no \"truth\" only\u00a0 a virtual world controlled by oligarchs..\nbolong\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n966 posts\n02-01-2026 at 08:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSilders\nYes, you are correct. That was just another AI generated \"drama\" on Youtube that is making many viewers irritated myself included. I am usually cognizant of these Youtubes immediately and pass them by. Must have been tired and let it slip through.\nHowever, the thought remains the same. The above link describes \"Sliders\" - people who affect electronics (that could be a two-way interaction.) I have a friend who is notorious for rendering anything mechanical useless shortly after taking it to hand. We have all learned that you don't want to lend this guy a lawn mower, and he can't wear watches whether electronic or mechanical. Many of us will not let him into our automobiles. I suspect he could also affect stereo systems though he has never been near mine when it was running.\nIt's also likely that more unusual emotional states could affect stereo systems and that at times the state of your stereo system could be interacting with the listener especially if it is sounding \"off \" or maybe especially good.\nReader anecdotes appreciated.\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n02-01-2026 at 09:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou are right bolong...\nWolfgang Pauli could never had been an applied physicist... He was so well known to put any electrical devices off chart or off, his applied laboratory friends jokes about him walking in the midst of experiments ...\nit is true that the presence of the Nobel Prize-winning physicist Wolfgang Pauli was famously associated with the mysterious failure of technical and electrical equipment, a phenomenon known in the physics community as the\n\"Pauli Effect\"\n. While this was a humorous legend, it was so pervasive that Pauli\u2019s colleagues genuinely believed in it, and he was even banned from some laboratories.\nHere are the details of this phenomenon:\nThe Legend and Incidents:\nThe Pauli Effect refers to the tendency of experimental apparatus, electrical systems, and machinery to break or malfunction when Pauli was in the vicinity.\nThe \"Train\" Incident:\nThe most famous anecdote, reported in George Gamow\u2019s\nThirty Years That Shook Physics\n, occurred when a complex, expensive measuring device at the University of G\u00f6ttingen broke down without reason. It was later discovered that at that exact moment, Pauli was on a train passing through the G\u00f6ttingen railway station, traveling from Zurich to Copenhagen.\nThe Cyclotron Case:\nWhile visiting Princeton University in 1950, a, heavy, brand-new cyclotron burned down. Pauli himself speculated whether this was an instance of the \"Pauli effect\".\nFailed Prank:\nColleagues once set up a prank to make a chandelier fall upon Pauli\u2019s entrance into a room to simulate the effect. However, the apparatus broke, and the chandelier stuck, refusing to fall\u2014which was, ironically, cited as further evidence of the effect.\nReactions by Peers:\nExperimental physicist Otto Stern banned Pauli from entering his laboratory, despite their friendship, to protect his equipment.\nPauli\u2019s View:\nWolfgang Pauli himself believed in this phenomenon and felt that he had a \"curse\" that caused equipment to break. He even discussed it with the psychologist Carl Jung as an example of \"synchronicity\"\u2014an acausal connective event.\nIt is important to note that the Pauli Effect is not a validated physical phenomenon, but rather a famous, well-documented legend among physicists and a humorous, \"scientifically\" framed superstition.\nWhat google A.I. forgot here is that this \" Pauli effect\" could probably be demonstrated by many others person but indeed was not scientifically validated yet...\nWhy did Pauli believed it then ?\nWas he an idiot believing anything ?\nI dont think so ....\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n02-02-2026 at 04:13am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nthe greatest\u00a0 technological event related to sound control was done in India...\nThe Barabar caves...\nThis documentary done with very serious stonemasons, and technology to measure all his aspects (symmetry,roughness levels, acoustic properties,geometry etc) is one of the best documentary i ever listened to...\nThere is the Pyramids as miraculous buildings then the Barabar caves ...\nEnglish Version,prepare a beer or a coffee and prepared to be astonished, this documentary is free:\nhttps://www.youtube.com/watch?v=iF6qv1CC5_4&list=PLt3D1556v66LXzzr5xr1BJCU8aBLlYkf4\nThere you will have many hours of long\u00a0 interviews with many specialists about the Barabar caves... 16 hours of interviews with many specialists of mason and India history and others...Alas! it is not free and we can understand why... I gave this adress to demonstrate the seriousness of this free 2 hours documentary...\nhttps://bam.okast.tv/\nIn the past architecture and acoustics was one event... We have lost this science and this meaning...\nThe Greek so good they were if you study their theater,were children compared to Barabar unknown acousticians...\nAcoustics not only rule audio in your room and brain , it rule\u00a0 the cosmos too ...\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n02-03-2026 at 07:19pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBarabar caves is an astounding documentary i had seen few years ago...\nThe geometry of the 5 finished caves\u00a0 exhibit\u00a0 two things:\u00a0 a priori tasks specifications meeting roughness measured levels nowhere to be seen since and worst: in non controlled natural conditions. All this to match a 34.5 hertz\u00a0 resonance and reverberation level ( 60-70 sec)\u00a0 present in the 5 different geometry of the 5 caves.\nIt does not takes a high I.Q. to become conscious of another reality than the one proposed by mainstream\u00a0 conventional history ...\nAcoustics is way more than we think it is...\nbolong\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n966 posts\n02-03-2026 at 07:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWould love to be in the most sonorous of the caves with a wind storm raging outside though it could be a head blaster.\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n02-03-2026 at 07:49pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI would prefer mansoon rain... The experience could be interesting indeed even with a storm...\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n02-03-2026 at 07:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nthe Barabar caves are as astonishing as the pyramids in a less spectacular way tough...\nT","title":"CERN&#39;s 2026 Run Just Detected a Particle That Reacts to Human Presence","url":"https://forum.audiogon.com/discussions/cern-s-2026-run-just-detected-a-particle-that-reacts-to-human-presence"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197343-155765\nEdit\nDiffuser decision for ceiling\nWould like to get some feedback and info.\nTrying to stick with Vicoustic products since its more easily available here in Canada.\nMy room is 19 x 14 and the ceiling height is just shy of 7 1/2 ft. (7 \"4 roughly).\nI already have acoustic panels setup in the room. I already have plans to add diffusion in the back and front walls based on recommendations.\nThe last piece I'm missing is the ceiling.\nI kind of rushed and had bought a used set of Vicoustic Multifuser DC2 in order to use. My plan was to install 3 in one line covering the Left, Center and Right channel speakers first reflection point on the ceiling.\nHowever, after using ChatGPT, googling and got some advice from a local store, they said that I would be better off using the Vicoustic VicPattern Ultra Wavewood MKII. Both DC2 and Wavewood would be installed flush to the ceiling.\nChatgpt suggested leaving 2-4 inches spacing in between them versus having them stuck all together.\nWhat does everyone think? Before I invest in the ceiling installation.\nI have floor standing speakers SF Olympica III and my center is a SF Sonetto CII. Let me know if more info is needed, thanks\nskads_187\n01-27-2026  6:17pm\n25 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ntomic601\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n13,758 posts\n01-27-2026 at 06:33pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhy not hang what you have and listen. If it were me I would measure (!I use Audio Tools sw w a calibrated mic but REW is fine )!before and after \u2026 the gaps are fine. I assume w center channel you have a big highly reflective screen ? What are you doing to treat that ????\ngo Canada you are my plan B \u2026 I spend summers there\u2026\nskads_187\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n88 posts\n01-27-2026 at 06:41pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@tomic601\nyes, so, the issue is, I don't know how to hang them temporarily as I haven't purchased the kit needed to hang them as they cost quite a bit, hence why I took a step back and said, before investing in the J profile rail , glue, etc Let me see which one is better, then purchase the necessary accessories needed.\nThe issue is, I have a matte black ceiling, so I definitely don't want to make any holes that need to be redone/re touched up.\nI wish I knew how to use REW, but also the time it would take to learn it.\nI have been told about the screen being an issue and was told to use a blanket to cover it, I do need to try that one day and see what differences it makes.\nCome to Canada anytime!\nrick_n\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n491 posts\n01-27-2026 at 06:57pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have a similar setup though I'm running Focal mains.\u00a0 I went with absorption rather than diffusion on the ceiling.\u00a0 I'm very pleased with the sound I'm getting.\u00a0 I setup one row of panels about 4 feet from the front wall, then their is a break with just sheetrock for 18 inches then a second row of absorption panels that ends roughly at the listening position.\u00a0 There's really no right or wrong because everyone hears things differently.\u00a0 Good luck and cheers.\nskads_187\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n88 posts\n01-27-2026 at 07:12pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nthanks\n@rick_n\nfor the input,\nYeah, at this point, I have about ~ 9 acoustic panels on the walls. So I was looking to liven it up a bit.\nSo absorption in your ceiling, see , this is why I was kind of thinking of going the\u00a0VicPattern Ultra Wavewood route, it gives a bit of the best of both words, so its like a meet in between type of scenario.\ngkelly\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,124 posts\n01-27-2026 at 07:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe panels you have are only 4 pounds each. Use this for temporary\nhttps://www.google.com/gasearch?q=blu%20tack%20adhesive%20putty&source=sh/x/gs/m2/5\nor this\nhttps://www.command.com/3M/en_US/p/d/b5005604181/\nAgree with the idea of having a couple of and up to six inches of space between ceiling and panels. They are called clouds \u2601\ufe0f for a reason. I\u2019d still look at absorption for the ceiling as that is one giant flat panel up there. Anyways, give the putty a try you never know If that is the sound you were looking for unless you try. Good luck with your endeavors. Sounds like you\u2019re gonna have a bunch of fun.\nskads_187\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n88 posts\n01-27-2026 at 09:13pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks\n@gkelly\nand just to add, its sad, because I wouldn't be able to do a comparison, Ill take a look at those putty options.\nJust wanted to add, although, I guess it shouldnt be of great importance, I would 100% prefer the look of the Wavewood, it would stick out less and blend in with the ceiling much better.\nronboco\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,135 posts\n01-28-2026 at 12:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@skads_187\n@rick_n\non absorption. My ceiling is also 7\u2019 1/2\u201d and my room is almost the same size as yours. you need to control the room well to get the best performance. Don\u2019t worry about too much absorption right now. You can always take some out if needed.\ntcutter\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n451 posts\n01-28-2026 at 03:40pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI use GIK absorption for first reflections on the walls and ceiling and a thick wool cut-pile rug with pad for the floor. I have\u00a0Ultra\u00a0Wavewood Diffusers on the walls and DC3 diffusers on the ceiling to further treat the room. I use 3M Dual Lock strips to hang lighter panels on the ceiling. Be aware that you need a certain distance between you and diffusers for them to work properly.\nI agree that space between treatments is not bad.\nMy virtual system has pics:\nhttps://www.audiogon.com/systems/11207\nGood luck!\ndavejaz\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n14 posts\n01-28-2026 at 07:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nhttps://drive.google.com/file/d/1ZcOnXHH72dNm_h0G6xg3W-RSuOwvUKSs/view?usp=sharing\nI mounted 4 Wavewood panels on 8 ' ceiling using adhesive and a safety hook.\nThey are centered on a line from Sonus Faber\u00a0 Nova 3 and listening position using the first reflection point of tweeters.\u00a0 It made a big improvement.\nsgordon1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n478 posts\n01-28-2026 at 07:38pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAre you up for trying something low cost, effective, and fun?\nBuy two packages of Golden Sound Acoustic Discs.\u00a0 Use one on the ceiling corners and experiment with the others on speakers, side walls and rack.\nCan't miss, for less than $300!\nskads_187\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n88 posts\n01-28-2026 at 08:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks everyone,\n@davejaz\nthat looks really good!\nYeah I spoke to a acoustic treatment specialist yesterday, he advised i stick with the Vicoustic Multifuser DC2. He did suggest i try to take some measurements before and after. Which may take me awhile to learn REW and how to use it. So Ill have to see.\nAnother good suggestion is I can use maybe some industrial Velcro","title":"Diffuser decision for ceiling","url":"https://forum.audiogon.com/discussions/diffuser-decision-for-ceiling"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197338-185676\nEdit\nAn Interesting Video Audiophiles Might Like..I say Might\nThis Video I am posting is for information to help understand what we hear from our room and our equipment, It is in know way posted to provoke anyone but to maybe bring some knowledge. The Video is from The 'CHEAP AUDIO MAN' a Youtube Creative poster who has 100's of videos. They are presented in a Comedic format but contain some interesting information that I have always taken into account when listing to my Hi End gear. It might be helpful in understanding our great Hobby.\nPlease do not let the title of the video upset you as the creator likes to attract you by the title. He has some interesting points.\nI hope you gain some insight from the video.\nPlease ..Don't shoot the messenger.\nhttps://www.youtube.com/watch?v=vggC5VsV_TI\nmrkrichman\n01-27-2026  2:06am\n8 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ngdaddy1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n549 posts\n01-27-2026 at 03:47am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMany a truth is spoken in jest.\nnewton_john\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n611 posts\n01-27-2026 at 09:16am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@mrkrichman\nPlease do not let the title of the video upset you as the creator likes to attract you by the title. He has some interesting points.\nTalk about not being able to judge a book by the cover.\nIt\u2019s a great shame that he feels the need to indulge in the provocative clickbait title to grab attention in a crowed marketplace. That\u2019s way of it with people in the media and politicians these days.\nIt would be so much better if the title was actually pertinent to the content. Does everything need to be dumbed down in this way? There\u2019s a real danger that anything of value that they have to contribute gets lost in the process.\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n01-27-2026 at 02:09pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI like many reviewers,he is not one of them (but i like this last video),but anyway if i need something i compare all reviewers impressions and analyse under their lines...\nWhen i bought the Douk T8 pro for peanuts, a decent tube pre-amp and EQ\u00a0 for low cost system/room, i did this with success...\nSame for my Edifier speakers+sub...\nI prefer more serious reviewer though anyway he is\u00a0 as useful\u00a0 if not more as the others...He speaks for low budget audiophile and i am one ...\nNever bought a product recommended by almost all except a few or even one ...\nThe best product i bought on Aliexpress is a buffer/filters which cost almost nothing and create audible cleanliness effect so much i bought four ...\nSame is true for Schumann generators whose audible effects though need to be heard\u00a0 in an already relatively synergetical and well optimized system/room. It is why few reviewers called this Schumann generator \"tweak\" a placebo effect ignoring often\u00a0 how to optimize their system to begin with , and knowing only how to buy new pieces of gear in a circle of expanses (they called this ignorance audiophilia)\nAlmost no reviewers talks about few bucks devices which really work ...Except cheapaudioman whom i appreciated as many others\u00a0 in spite of his style...\nMost reviewers think like most people: the costlier the better (unlike cheapaudioman) .... it is not false for sure... We must pay for qualities parts...\nBut an half truth is worst than a lie...(Costlier piece of gear need also to be optimized to work at their peak and be then evaluated)\nAlmost no reviewer talk about\nthe way to optimize\nany system at any price : mechanically,electrically,acoustically and using DSP ...(but to be fair cheapaudioman at least suspect this is true,speaking of basic acoustics, we need optimization more than an upgrade)\nLearning this by myself\u00a0 i quitted the frustration circle and the upgrading race...\nI will not create a youtube channel to teach optimization ...\nI am retired and busy ...Cheapaudioman speak truth here...Then ....\nSomeone like cheapaudioman\u00a0 must also do it and explain why upgrading is preposterous\nbefore\nknowing how to optimize our system/room\n(The only exception is a lack of electrical synergy between a piece\u00a0 and the rest of the system which may justify an upgrade)\nfoggyus91\nDetails\nDiscussions\nPosts\nThis discussion\n612 posts\n01-27-2026 at 02:25pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@newton_john\nI do not disagree however it works... most here myself included are full of crap.\nIt\u2019s a great shame that he feels the need to indulge in the provocative clickbait title to grab attention in a crowed marketplace. That\u2019s way of it with people in the media and politicians these days.\nmrkrichman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n41 posts\n01-27-2026 at 04:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'm happy to see that the CAM has gotten his reviews from this board. As Fox would say...\"Fair And Balanced\" Your opinions are the ones that matter. We are the ones that have taken the time to research and compare and listen to other recommendations from the experts here as they have the knowledge and use of the equipment and have studied the effects of reflected sound Vs direct sound from the speakers and the room the equipment is used in. Maybe some of us will have gain some information that will help clear up the information that we receive from others.\nlanx0003\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,051 posts\n01-29-2026 at 03:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHis low-end recommendations are often good (e.g., the SMSL PO100 Pro and Sony SS-CS5), but he has a habit of throwing gear away in front of camera / audiences which I found rude / disrespectful.\ndeep_333\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,544 posts\n01-30-2026 at 10:30pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nZ Reviews is a funny entertaining channel for cheap product (been around long before the supposedly cheap guy's audio channel).\nhttps://www.youtube.com/@ZReviews\nThis cheap audio guy is a very mediocre boring doughboy.\nThey are presented in a Comedic format but contain some interesting\nPlease do not let the title of the video upset you as the creator likes to attract you by the title. He has some interesting points.\nI hope you gain some insight from the video.\nhttps://www.youtube.com/watch?v=vggC5VsV_TI\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n01-31-2026 at 12:38am\nCopy Comment URL\nReport Comment\nEdit\nDelete\ni prefer by far these two reviewers to almost all posts of\u00a0 our very\u00a0 \"amicable\" dip_34\n\u00abDont troll the troll\u00bb-- Groucho Marx\nZ Reviews is a funny entertaining channel for cheap product (been around long before the supposedly cheap guy\u2019s audio channel).\nhttps://www.youtube.com/@ZReviews\nThis cheap audio guy is a very mediocre boring doughboy.\nMore to discover\nTurns Out Our Listening Habits Might ...\nAlmighty TT hum --- help\nAT ART 1000 vs London Reference vs An...\nHonest opinion's of the Mighty KLIPSC...\nConsidering the Pro-ject Box CD RS2 T...\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10 II S","title":"An Interesting Video Audiophiles Might Like..I say Might","url":"https://forum.audiogon.com/discussions/an-interesting-video-audiophiles-might-like-i-say-might"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197178-176934\nEdit\nLFP battery to run whole system\nI\u2019ve been toying with the idea of running my entire system off a battery for a while. There are commercial options like Stromtank, and plenty of fellow nerds use EcoFlow or similar all\u2011in\u2011one units, but of course I had to build my own solution.\nThe heart of the setup is the inverter, since it has to deliver a truly clean sine wave. I chose an Exeltech XP\u20112000, which in my view is one of the fastest, cleanest inverters available (and priced accordingly). To clean up any potential residual noise I use an OnFilter. Vladimir is great to work with. For the battery, I\u2019m using a Wattcycle server\u2011rack 58 V LFP pack that was very reasonably priced. Charging is handled by a Mean Well NPB\u20111700, mainly because I can fully program the charge curve and their gear tends to be electrically \u201cquiet\u201d and well engineered.\nSonically, the result isn\u2019t subtle. Even compared to my existing dedicated line, the battery supply wins across the board: deeper bass, more stable imaging, and finer low\u2011level detail. My system only draws about 100\u2013150 W in use, so the 2 kW inverter is massively oversized and never even gets warm; the fan stays off, which is rather great.\nThis whole exercise started because adding a true dedicated line for my larger system would have been a major project. The battery rig turned out to be a far simpler\u2014and, to my ears, better\u2014solution.\nStromtank? Does it power the International Space Station? ;-)\nhttps://www.manufacturingtechnologyinsights.com/exeltech\ntotal111\n01-17-2026  4:49pm\n5 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nspatialking\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n704 posts\n01-18-2026 at 09:57pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIn addition to switching to battery power, you also eliminated leakage from line to chassis earth in every component in your system.\u00a0 Nice!\nMy system is tube, so I am pulling about 1KW at idle, so I never pursued the battery approach.\u00a0 I've been working on creating an isolated, balanced, separatively derived system for powering the system.\u00a0 That is a few serious dollars, so I am only about 1/3 of the way there, as of today.\ntotal111\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n97 posts\n01-19-2026 at 01:32am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nActually, the system is connected to ground from the house. This is recommended. A dedicated ground rod would be the next step and planned.\n1kW can be still powered for a day worth of listening with a 16kWh battery. I ordered also a Gobel Power Project X in including 16 314AH cells. Cost is less than $2000 for the whole battery....\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n01-29-2026 at 06:06pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\ni don't know about the sound quality but compared to a UPS or other pre-built packages from vendors like EcoFlow, buying your own batteries can be ridiculously cheap.\u00a0 The rest of it is hard, and easy to build something dangerous.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n01-29-2026 at 08:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI can't stress enough how important it is to check with a licensed electrician before trying to create an isolated ground in a home.\nIf your generator is 100% floating, no ground is needed.\u00a0 Like my data closet.\u00a0 I have a power strip that has 100% of my data closet power.\u00a0 When the power goes out I pull that strip off the wall and plug it into my inverter.\u00a0 No grounding.\u00a0 That's as it should be.\ntotal111\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n97 posts\n01-29-2026 at 09:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nwhat is with static discharge?\nMore to discover\nVandersteen 5a battery biased crossovers\nGoing Battery Powered\nAudioquest Battery Pack comparation\nBackup battery UPS for my system...\nTheoretical battery power supply ques...\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10IIxs\nVandersteen Model 2c ii signature\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"LFP battery to run whole system","url":"https://forum.audiogon.com/discussions/lfp-battery-to-run-whole-system"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197183-129491\nEdit\nAcoustic Room Treatments\nHello,\nWhat would you recommend for room acoustic treatment for a 11\u00d715 room with 8 foot ceiling?\njoeradio\n01-18-2026 12:57am\n26 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n01-18-2026 at 01:33am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHere is what a friend of mine did in a room about that size.\nhttps://www.flickr.com/photos/jdflood/54694295197/in/dateposted-public/\nIt sounds fantastic. By careful choices you can make it look better.\nricred1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,152 posts\n01-18-2026 at 01:34am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI recommend reaching out directly to GIK, or an Artnovion Acoustics dealer. They will ask for a panoramic picture of your room, the dimensions, and measurements of any windows /doors that are in the room. I use Artnovion Acoustics.\njastralfu\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n575 posts\n01-18-2026 at 04:34am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nUse REW software and a compatible mic to take some measurements. \u00a0You can send the REW files to GIK and they will recommend some options based on that data. \u00a0You can then buy as you can or all at once and run REW again and adjust as needed.\njoeradio\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n47 posts\n01-18-2026 at 02:13pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHey thanks for the reply. Do you have their web site address?\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n01-18-2026 at 02:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nATS and Gik are my normal two places to go.\u00a0 Remember very much to treat the ceiling, especially between you and the speakers and between/behind the speakers include some diffusion as well as to the sides.\nbillstevenson\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,319 posts\n01-18-2026 at 03:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI visited a home with a similar setup and it sounded dreadful.\u00a0 Dead.\u00a0 No life.\u00a0 The guy had spent a ton of money on it too, and he knew it wasn't right.\u00a0 The key to success is to have the room properly measured and evaluated before spending a dime of treatments.\u00a0 You would be amazed what can be done with the addition of crown molding, the judicious placement of a pair of subs, and where the main speakers and listener are positioned in the room.\u00a0 Every room is different, but my experience is that less is more in most cases.\u00a0 Generally speaking coffee tables cause trouble and have no place in the listening room and chairs and sofas are most often better covered in fabric than in leather.\u00a0 Moving them even an inch or two one way or another to optimize sound can make a big difference.\u00a0 All positions once determined during the room evaluation process need to be marked so that\u00a0 optimization is not compromised by the cleaning lady or some such with the passage of time.\u00a0 Room treatments come last.\nkofibaffour\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n726 posts\n01-18-2026 at 04:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDIY the panels imo\n@joeradio\nThat's what I've done for my space\njastralfu\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n575 posts\n01-18-2026 at 05:50pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nREW here\nhttps://www.roomeqwizard.com\nGIK consultation page here\nhttps://www.gikacoustics.com/pages/acoustic-consultation\nlubachl\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n126 posts\n01-18-2026 at 05:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI recently moved and had to build a new listening room. It took quite a while to get things sounding up to expectations. I found the Woodupp diffusers, www.woodupp.com worked well and are cosmetically attractive. They are also very reasonably priced. Their diffusing/sound damping is very effective so do not over do it. Two panels on one wall is about all you might need. Before you affix them to the wall, move them around to different locations and do some listening to test the effectiveness.\nGood Luck!\nlnitm\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n173 posts\n01-18-2026 at 07:33pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI use Acoustic Sound panels with great success and custom artwork available for very good prices. Look up how to treat walls for 1st reflections, corner bass traps and treatment behind speakers. If you sit close to a wall look at absorption/ diffusion from GIK ACOUSTICS on back wall behind you. It will make a huge difference in sound quality.\ntcutter\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n451 posts\n01-18-2026 at 09:40pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nhttps://forum.audiogon.com/discussions/room-treatment-a-primer\nI use GIK and Vicoustics.\nrick_n\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n491 posts\n01-18-2026 at 10:14pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou have a relatively small listening room.\u00a0 Bass control will be your biggest challenge.\u00a0 Focus on that first.\u00a0 I would highly suggest you do your treatments in steps.\u00a0 Take care of the bass then move onto the first and second points of reflection.\u00a0 Do some treatments and then add to them incrementally and listen to what you are hearing as your room develops and progresses.\u00a0 If you follow this you will not fall into the trap of overtreating (over spending) and making the room dead.\u00a0 Take your time, it's a journey not a sprint.\u00a0 Good luck and cheers.\ntcutter\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n451 posts\n01-18-2026 at 10:33pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI believe that contouring the bass will be near impossible via room treatment and instead will be most greatly influenced by speaker and listening positions. If there is space and WAF, then two or more subs are likely going to be a far better use of limited real estate than bass traps.\nThe next step as suggested above is to treat first reflections, which you will likely notice and appreciate the most.\nGood luck!\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n01-18-2026 at 10:48pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nA great way to start is to use cushions (couch and other), heavy blankets, pillows to experiment with to get the hang of it. Then companies like ATS and GIK can help provide better looking and more effective treatments. They also do sonic analysis. Personally, I have found it better to listen and learn better than all the \"sonic analysis\"... but that is me.\nbuzz\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23 posts\n01-19-2026 at 01:09am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDitto to what\n@jastralfu\nsaid.\u00a0 Recommendations regarding room treatment will not be meaningful without measuring the in-room performance of your current system.\u00a0 Every room will exhibit different sonic characteristics even if the dimensions are equal. The materials used, carpeting versus hardwood floors, etc. will impact the response you get in the room.\u00a0 The other critical factor is placement of your speakers which will activate different room modes depending on placement in the room.\u00a0 REW will help you identify frequenc","title":"Acoustic Room Treatments","url":"https://forum.audiogon.com/discussions/acoustic-room-treatments"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197225-980\nEdit\nElectrostatic tech in Milwaukee\nAnyone know of a shop that repairs Quad 63s in the MKE area?\npaulfolbrecht\n01-21-2026  3:48am\n3 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nnogaps\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n187 posts\n01-21-2026 at 08:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTry calling The Audio Shop in Racine.\u00a0 He's been a resource for me for many years..I guess a few decades now.\u00a0 I doubt he works on them, but may know of someone.\nAddress\n:\u00a01810 Thurston Ave, Racine, WI 53403\nPhone:\n(262) 886-1008\nwhart\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,406 posts\n01-21-2026 at 09:33pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nKent McCollum, Electrostatic Solutions, \u00a0outside of St. Louis Missouri is top notch. He restored a pair of '57s I bought in 1974, supplied the necessary shipping crates and turned the work around fairly quickly. It is easily an 8 hour drive, but worth exploring given the quality of his work. I'd opt to ship, given that it is palletized.\nnogaps\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n187 posts\n01-21-2026 at 10:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSt Louis is easy from Milwaukee..less than 7 hours..around 6.5 last time I made the run(from Racine area, pushing things a bit, but not nuts).\u00a0 If it were me, I'd drive them down. Shipping something like that..could cause more issues than it solves. Take someone with you and down and back in a day(btdt..more than once making runs for things I've purchased over the years). It's only a day, once it's over..it's over.\nMore to discover\nGood tube tech in Milwaukee, WI?\nAnalog Consultant in Milwaukee Wisconsin\nElectrostatic tech in Milwaukee\nMet a great dealer in Milwaukee last ...\nMilwaukee, Wisconsin Area\nAyon Audio S-10IIxs\nRSX MUSIC SERVER RSX MUSIC SERVER\nFocal 36 MONTH FINANCING\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Electrostatic tech in Milwaukee","url":"https://forum.audiogon.com/discussions/electrostatic-tech-in-milwaukee"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197212-212350\nEdit\nRoon via Ubiquity and Starlink\nHas anyone srt up a Roon via Ubiquity with Starlink? I\u2019m a week deep into initial set up via a new switch. and new cable? The Dream Machine recognizes it, \u00a0300 MB download the Roon Core set up says everything is OK but the ethernet switch on the Nucleus has a persistent, solid, orange and flickering amber code. Any help appreciated. I haven\u2019t plugged it into the new Arcam SA 45 because its telling me all us not well.\nleos2nddad\n01-20-2026  2:19pm\n4 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nsufentanil\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n786 posts\n01-21-2026 at 03:05am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'm not familiar with this particular setup, but why do you say that \"it's telling me all is not well\"?\u00a0 Have you tried it and it doesn't work the way you expect?\nMany Ethernet switches have two lights.\u00a0 A solid light indicates a successful ethernet link, and another light flashes when there's data.\u00a0 It depends on the switch, but sometimes a 1 gigabit switch will use a green link light when connected at gigabit speeds, and an amber link light for a 100 Mbps link.\u00a0 That might be your case here.\nSome pictures/diagrams/additional info would be helpful in troubleshooting this further.\nMichael\ntoro3\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n525 posts\n01-21-2026 at 11:49am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@sufentanil\nI had the same question.\n@leos2nddad\nhave you connected the Arcam and taken a listen yet? Sounds like your Roon is processing the data correctly. From what I read online, solid orange indicates a Gigabit connection.\nleos2nddad\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4 posts\n01-21-2026 at 01:25pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHave not heard it yet. The flickering yellow is a code that its having negotiation/problems or packet loss? Guessing its a Ubiquity setting. I\u2019ve been troubleshooting with Claude and GPT which has not solved the problem.\nzlone\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,431 posts\n01-21-2026 at 02:29pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPlug the Arcam in and give it try, it won\u2019t be damaged by an Ethernet connection.\nMore to discover\nRoon via Ubiquity and Starlink\nVolumio Primo Plus\nAurender N100H\nAyon Audio S-10IIxs\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Roon via Ubiquity and Starlink","url":"https://forum.audiogon.com/discussions/roon-via-ubiquity-and-starlink"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197223-214721\nEdit\nNeed to soundproof to help with severe ear condition.\nI live in USA and have to avoid too much noise due to a severe ear condition, which is impossible with how loud the people I live with are, and how thin the walls are, plus a gap under my door that easily lets even more noise in. Since it seems as though there\u2019s no way I can soundproof all of my bedroom (165.5 sq ft/15.37 sq m), with how much I think it would cost and how much airflow I think it would cut off, I\u2019m thinking of setting it up so I can use my PC in my closet (15.17 sq ft/1.41 sq m). The problem I have is that I have no idea what soundproof curtains to get since I don\u2019t know anything about them between brands, material, thickness, sellers, things like that.\nMy idea is to attach the curtain to the shelf above and just let it drape over. The distance up to the shelf is 85\u201d/215.9cm, and going across I would need at least 85\u201d/215.9cm, maybe more than that so it can also cover the wall in a U shape.\nI also can\u2019t figure out how to block out as much noise as possible without cutting off too much airflow since it makes my asthma worse from the lack of oxygen, like how leaving an opening at the top of the curtains would retain the airflow, but it might let too much noise in.\nI was also thinking that multiple curtains to just layer on top of each other might be a good idea but I\u2019m not sure. I\u2019m just hoping to find out what the best curtains and methods would be, or maybe if anyone has better ideas on what I should do, so I\u2019d really appreciate any help.\n(Images might look weird, viewing them or opening them in a new tab might fix it.)\nroksyk\n01-20-2026 10:18pm\n2 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nnoromance\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10,536 posts\n01-20-2026 at 10:25pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nEarplugs?\nNoise canceling headphones?\ngkelly\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,124 posts\n01-20-2026 at 10:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHave you tried a white noise machine\nhttps://lonestaracoustics.com/products/?gad_source=1&gad_campaignid=22223863392&gclid=CjwKCAiA7LzLBhAgEiwAjMWzCO5KcRrlMY5ibnJXaBligqgCaxDbJP1bbmgfpJgzbjMXuomBbk4k_BoCDusQAvD_BwE\nhttps://acousticgeometry.com/products/white-noise-machine/?srsltid=AfmBOop88_Su449Ka908SM9fzsZ3kiye-NWlhjo89r0TZhB7GVQEy2sW\nMore to discover\nNeed to soundproof to help with sever...\nSoundproof Insulation Queston\nHow to soundproof my turntable?\nSeeking to soundproof front door to m...\nSoundproofing a room without deadenin...\nVandersteen Model 2c ii signature\nAurender N10\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Need to soundproof to help with severe ear condition.","url":"https://forum.audiogon.com/discussions/need-to-soundproof-to-help-with-severe-ear-condition-2"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197141-209575\nEdit\nMy happy issue correction story\nA Tuesday:\nNo one home but me. Wife went to work at the office today and both she and daughter will be home late due to after work crafting class.\nI get to listen to my stereo! At any volume! And run sine wave sweeps to my heart\u2019s content!\nI was pretty pleased with the sound of my system and hadn\u2019t felt compelled to research new gear for some time. Bass extension/texture/impact was still pleasing me since the sub upgrade. The entire frequency range was still a bit clearer and more coherent since upgrading my streamer due to the digital high pass and sub/main sync feature. I had improved some peaks and dips courtesy of room correction after getting a calibrated mic.\nHowever, there was still a mentally-bothersome issue where the sub would sound better at 0 degree phase with one channel but at 180 with the other. And\naudibly\nbothersome was the imbalance between the sound of the left and right speakers that independent channel room correction could only ameliorate. Channel balance had a greater effect but at the expense of a shifting center image. I confirmed this was due to room reflections after swapping speakers and then speaker leads\u2014the brighter sound remained on the right.\nAnyway, now that I was alone it was time to try the speaker stands I got for Christmas (bought from my \u201cthings you could buy me\u201d list created many months ago). My bookshelf speakers were at the ends of a 6.5\u2019 wide TV console. Had tried them at front edge of console (to reduce diffraction), close to wall (to reduce comb filtering), even with front baffle continuous with tv (why not?). My normal listening position was 10\u2019 away and I would have to sit closer on the ottoman for critical listening sessions.\nThe speakers on the stands were maybe a foot wider than before and a foot farther from the front wall. Upon first listen, I noticed an immediate improvement in imaging and instrument separation, even more than when I was hunched over on the ottoman! I listened in amazement and appreciation for some time, then noticing the persistent channel imbalance, reran separate-channel room correction many times, trying various settings.\nImbalance between left and right remained. Sliding the balance lever from left to right sounded like two different speakers! Most recommend room correction up to 400Hz but I ran it all the way up to 8k to try to address this. And there was no way I was going to be allowed to do room treatment.\nFor the same WAF reasons I knew that I couldn\u2019t leave the speaker stands sticking out in front of the console, so after appreciating the improved sound for another hour, moved them back and to the sides of the console. Well, lo and behold imaging was still improved and now the stubborn channel imbalance was imperceptible! I stared open-mouthed at the singer now solidly in the center!\nIn disbelief I panned the balance control from left to right and heard (mostly) the same speaker. Hallelujah!\nIndependent channel room correction is still enabled, but that repositioning did more to improve the channel imbalance than anything else! I have no idea why clams would be happy but that phrase comes to mind. An upgrade I didn\u2019t care much about combined with low WAF resulted in now-complete audio satisfaction! Unfortunately, I\u2019ve already booked flights to Schaumburg, IL in April\u2026 Wish me strength!\nitsasicknessitis\n01-15-2026  8:03am\n8 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n01-15-2026 at 02:26pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCongratulations. I occasionally take up repositioning again... it is great when you get to a new level.\nhjdca\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n258 posts\n01-15-2026 at 05:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGreat news!\u00a0 Yes, for me, I have always found wider speaker spacing really helps imaging and stereo sound synergy.\u00a0 I have a very large room with cathedral ceilings and my current speakers are 12 feet apart - center to center.\nitsasicknessitis\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9 posts\n01-15-2026 at 08:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@ghdprentice\nOh? What prompts you to play around with positioning (I'm assuming no changes to room or equipment)?\nbassbuyer\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n947 posts\n01-16-2026 at 01:30pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGreat to hear. \u00a0I always enjoy tinkering with my music systems. \u00a0It\u2019s one of the best parts of this hobby. \u00a0Enjoy!\nozzy62\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,753 posts\n01-16-2026 at 01:36pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAnd there was no way I was going to be allowed to do room treatment.\nFor the same WAF reasons I knew that I couldn\u2019t leave the speaker stands sticking out in front of the console,\nYou don't have a stereo issue, you have a domestic partner issue.\ndekay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,249 posts\n01-16-2026 at 03:05pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nUh huh\nDeKay\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n01-17-2026 at 02:09am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOne can always do better. There are so many dimensions\u2026 distance from front wall, side walls, toe in, tilt back. I measure every once in a while as, every two or three years. Typically they end up very close to where they were\u2026 but ever so slightly better\u2026. Imaging, or bass.\njerchapman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5 posts\n01-20-2026 at 09:14am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe entire phrase is \"Happy as a clam at high tide\"\u00a0 That makes more sense than the shortened version :)\nMore to discover\nHappy Holidays and Your Favorite Tips?\nIs Happy Chick provide original sound ?\nAnd a Happy Halloween to all!\nHappy Birthday Neil Young\nHappy Audiophile Day!\nAntipodes Audio K40\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10IIxs\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"My happy issue correction story","url":"https://forum.audiogon.com/discussions/my-happy-issue-correction-story"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197187-6896\nEdit\n2 into 1\nHello, I just purchased a new DAC (Aero) & would like to connect it to a Don Sachs 2 preamp, via XLR. The pre only has 1 xlr input that is doing duty for my EMT 948. Will adding a 2 into 1 (passive) switch be a negative impact on my sound? Thank Dan\ndanmar123\n01-18-2026  1:14pm\n1 response\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ndanmar123\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n638 posts\n01-19-2026 at 08:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nno it won't.\nMore to discover\nAV processor choice - Mac MX123 vs NA...\nAqua La Scala Optologic Mk2 on the ch...\nKrell 302 v 302e\n\ubc14\uce74\ub77c\uc0ac\uc774\ud2b8\u3010 CCA82.COM \u3011\ub85c\uc584\ub4dc\ub9bc\uce74\uc9c0\ub178\n5 Skill Moves You Need To Learn In FU...\nAurender N10\nAntipodes Audio K40\nBricasti M5\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"2 into 1","url":"https://forum.audiogon.com/discussions/2-into-1"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197190-192056\nEdit\nSchroder CB-9\nI recently bought a used Schrdoer CB-9 and installed on my TT.\u00a0 The Schroder, while somewhat challenging to set up is a huge step up from my previous tonearm (clearaudio satisfy), delivering significant improvement pretty much on all levels sound wise.\u00a0 Are there any recommendations/suggestions from others who have used/using this tonearm to possibly optimize the CB-9 even more, cartridge pairing, etc.?\nFor context I\u2019m using a Hana ML with the CB-9, Clearaudio DC wood Performance TT, Leben CS-300xs, Dynaudio Evoke 30\u2019s, Tavish Adagio phono stage.\u00a0 Any constructive suggestions would be very appreciated.\ntsc65\n01-18-2026  3:38pm\n0 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nMore to discover\nSchroder sq and the new talea\nArtemis/Schroder SA-1?\nTHE08: Room: 1510: Artemis, Schroder ...\nSchroder CB-9\nCan You Defeat the Anti Skating in a ...\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10IIxs\nAurender N100H\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Schroder CB-9","url":"https://forum.audiogon.com/discussions/schroder-cb-9"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197133-214404\nEdit\nMy first passive crossover\nfirst time poster... first audio adventure. I woodwork as a hobby and recently\u00a0 had the genius idea to build some speakers to match an old Kenwood 6030. I was only loosely informed of what a crossover was, that was one week ago...\nbetween Youtube, grok, partsexpress, and xsim i gained a basic understanding of the function of and controls in a crossover - I played in xsim until I was frustrated and then got the idea to copy the components from a working crossover (4th order/3 way speaker) and just start playing with the controls until I got a feel for them all. I really was ready to outsource the crossover at this time yesterday - but things finally started clicking a little bit.\nanyway, I have my first attempt to the point where I need skilled eyes on it to show me my flaws. I'm hoping I can get you guys to help me on my way.\nlol - but I cant seem to share images. smh\ngunnerv\n01-14-2026  5:30pm\n3 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ngunnerv\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2 posts\n01-14-2026 at 05:45pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nhttps://imgshare.cc/4bgtrpcf\nhttps://imgshare.cc/n1hk31hp\nhttps://imgshare.cc/m2w757yv\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n01-15-2026 at 01:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou want to come over to DIYaudio.com and check out the multi-way forum.\u00a0 Bill Waslo, the author of XSim is there, among many other friendly and knowledgeable builders.\ngunnerv\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2 posts\n01-15-2026 at 02:45pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nthank you for that!\nMore to discover\nCan anyone recommend someone who reca...\nADS L1530 Passive Crossover Schematic\nPlease tell me what the term Crossove...\nKEF Conjugate Load C 80 Crossover ...\nPassive radiators, ext crossovers &am...\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAuralic Aries G2.1\nAyon Audio S-10IIxs\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"My first passive crossover","url":"https://forum.audiogon.com/discussions/my-first-passive-crossover"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n182011-115039\nEdit\nRoon\u2026.can anyone point me to \u201chuman\u201d tech support\nLooking to get some \u201chuman\u201d support for my Roon Nucleus+. \u00a0Been down almost 2 weeks and the support from Roon is painfully slow. \u00a0Have worked through many many support related troubleshooting tips to no avail. \u00a0If anyone knows a great company that offers support I\u2019m willing to pay to get it back up and running again.\nAppreciate any assistance!!\nwoots\n01-13-2023 11:45am\n15 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\njperry\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,542 posts\n01-13-2023 at 11:47am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHave you tried your local dealer?\nAnother thought is a Roon Facebook group. There is one for Innuos, and they helped me before Innuos tech support responded.\nbhvf\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n232 posts\n01-13-2023 at 12:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFor the money they charge their support is abysmal. What issues are you having? Maybe some here could help? Audiogon should start a \"support\" forum and offer sales credits for answers that are deemed helpful.\nwoots\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n369 posts\n01-13-2023 at 01:25pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy issue is that after I select my Roon Core the next page becomes a spooling logo until it ultimately times out hours later.\nI have performed all the obvious rebooting of everything including going into the exact IP address and reloading as well as restarting.\nI have worked with my router company -- luxul and made sure all my settings were correct as well as my 26 port luxul switch.\u00a0 I have gone through my Ruckus Zone Director and made sure my WAP's were working properly.\nMy Roon is hard wired and I have switched ethernet ports and even plugged it into the back of my router.\nI have tried it on another network going straight into the Comcast modem out of the wall.\nI have Roon set up on my Mac Book Pro after Main Roon went down and it works flawlessly through my Mac Book set up plugged into my switchbox.\u00a0 It sounds lousy and is a headache to operate.\nI just can't get past the screen where it would normally boot up Roon and show me my tracks, albums, etc.\nI'm STUCK so any guidance is appreciated.\nI very much love ROON and have a lifetime membership; however, when they only provide one troubleshooting tip per day if you are lucky the process is woefully slow.\njoes44\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n139 posts\n01-13-2023 at 01:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIsn't that species extinct? \" Please press 1, please press 2 Please press 3 AAAAARGGGGGHHHHHH!\ntoro3\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n525 posts\n01-13-2023 at 06:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@woots\nI\u2019m assuming you posted the issue on Roon forum, correct?\nghasley\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,574 posts\n01-13-2023 at 06:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@woots\nDid you/do you have a backup of the internal drive? Can you directly access the internal storage of your nucleus via your ethernet? What were the circumstances leading up to when your nucleus became inoperable.\nwoots\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n369 posts\n01-13-2023 at 11:57pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks everyone!! \u00a0I did not post on forum. I will though.\nThe last thing I recall doing was upgrading a USB cable to improve my sound by connecting Roon Nucleus+ to my dac directly along with a new Ethernet cable.\nyes, I can access my internal storage and have reset/rebooted numerous times. I allowed port forwarding and undid the static ip address.\nI replaced the hard drive but can\u2019t Roon to ask me to format the new drive so I\u2019m going to transfer everything from the old drive to the new ssd drive next.\njoshua43214\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n67 posts\n02-22-2023 at 02:58am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy internet was down for a week, and that meant so was Roon. To make matters worse, I couldn't connect to my Optical Rendu with Roon offline.\nI had to hack my phone so I could tether it to my home network in order to listen to music.\nI am done with Roon.\nTerrible support, buggy as hell, and now it requires 24/7 internet connection.\nI suggest we all tell Roon to go to hell\nbill_k\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n962 posts\n02-22-2023 at 01:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nContact the dealer that you purchased the Nucleus+ from, they should be able to get dealer support involved. A friend was having a problem with his that he couldn't resolve via support on their forum, but once the dealer got involved an RA was issued and the customer promptly received a replacement Nucleus.\nwoots\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n369 posts\n02-23-2023 at 11:34am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nContacted dealer and did some trouble shooting. In the end I sent back to Roon and they replaced the SSD. \u00a0It was failing. \u00a0Unfortunately, it was just out of warranty. \u00a0The repair and shipping both ways ended up costing me $199 total. \u00a0As bad as Roon support is I will say the repair center in NY that I sent my Nucleus+ to was outstanding. \u00a0I sent it in on a Tuesday, they received it Thursday, repaired it that day, tested it and sent it back Friday and I received it back Sunday and had it up and running later that day. \u00a0They use 2 day Fed Ex. \u00a0If only the repair department could get the support team to be that responsive I would have a better opinion of the Roon product as a whole.\nPost removed\nFeb 23, 2023\ncantorgale\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n186 posts\n07-14-2025 at 04:33pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOne of the main reasons I left Roon. Absolute worst tech/customer support. \u00a0Either Innuos now. \u00a0Best customer service of any company in any industry I\u2019ve ever experienced. \u00a0Do yourself a favor if you can. \u00a0My digital audio life is so much better now.\ncantorgale\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n186 posts\n08-04-2025 at 11:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDumped Roon (NUC 2) years ago for that reason. \u00a0Life is good with Innuos. \u00a0Best support of any company in any industry in my experience.\ncantorgale\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n186 posts\n01-09-2026 at 03:25am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nInnuos. \u00a0Worked for me.\nnewton_john\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n611 posts\n01-11-2026 at 10:37pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBeen using Roon ROCK NUCs for a number of years. Whenever I've needed support, I've got help with my issue on the relevant part of the Roon Community. Very happy with the support I've had there.\nMore to discover\nHas anyone use bel canto s125's with ...\nAnyone heard the Don Sachs Custom Tub...\nAnyone with any experience with Tandb...\nCan anyone recommend someone who reca...\nPurist elementa advance anyone heard ?\nBricasti M5\nRSX MUSIC SERVER RSX MUSIC SERVER\nAntipodes Audio K40\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease re","title":"Roon\u2026.can anyone point me to \u201chuman\u201d tech support","url":"https://forum.audiogon.com/discussions/roon-can-anyone-point-me-to-human-tech-support"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n197043-193215\nEdit\nOver-Loading Pre-Amp Stage???  Prima Luna Floyd\nI have two inputs to the Prima Luna Floyd Hybrid integrated amp, an Auralic Vega DAC and a Denon FM Radio.\nThe DAC outputs 4.4v and the Prima Luna has an input sensitivity of 415mv.\u00a0 The FM Radio plays at approximately the same volume at any given position of the volume knob, so assumption is this is outputting ~4v.\nHerman from Prima Luna has advised that the amp needs 415mv to be able to output its full power.\u00a0 I will be getting some Rothwell attenuators to achieve the recommended -20dB (although these are also available in -10cB and -15dB so unsure whether either of those would have advantages).\nMy question is, could the ~4v inputs be responsible for damaging the pre-amp tubes?\nIn the first 12 months one of the PL tubes started an intermittant high pitched whining.\u00a0 Swapping tubes one by one from left to right channels isolated this, and replacing the tube fixed the issue.\nSince then I have been using military grade Brimar tubes, including this one\nCV4003 12AU7WA BRIMAR NOS VALVE TUBE (T14B) - Langrex\nand one of these has recently had the same behaviour, and this would be less than 12 months use.\nIt is worth mentioning that the system is used almost every day for 12+ hours, however it would still take longer than this to reach the 5-10,000 hours that a 12AU7 should last in a pre-amp.\nUntil the attenuators arrive I can set the DAC to 60% volume to achieve the same -20dB but there is nothing I can do with the FM Tuner as this is a fixed output.\nKeen for all thoughts on the use of attenduators in general and if the issues I am having are related.\u00a0 The other option Herman suggested was hard-wiring a resistor into the amp, but I am not capable or keen to do that when the DAC is likely to be upgraded at some point.\nincoming\n01-07-2026  9:18pm\n7 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nyogiboy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,232 posts\n01-07-2026 at 09:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI use this with my FM tuner to lower the high 2 volt output.\nhttps://www.schiit.com/products/sys\nincoming\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n29 posts\n01-07-2026 at 10:27pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGood option, thanks\n@yogiboy\nPotentiometer would achieve the same results as an attenuator, but does get around my issue of which -dB value to choose.\nmulveling\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,475 posts\n01-08-2026 at 04:45am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy question is, could the ~4v inputs be responsible for damaging the pre-amp tubes?\nIn the first 12 months one of the PL tubes started an intermittant high pitched whining.\u00a0 Swapping tubes one by one from left to right channels isolated this, and replacing the tube fixed the issue.\nNO, absolutely not. Your tubes are\ngetting damaged by input level. In these cases either the tubes are going noisy on their own, or the amp design is very sensitive to noisy tubes. So the Prima Luna\u2019s sensitivity of\u00a0415mv indicates a gain of (calculating...) 37 dB!? Holy cow!! I\u2019ve NEVER heard of an amp that high. No wonder. That means the pair of 12AU7 for \"input\" slots are under a sonic electron-microscope (so to speak), and need to be EXTREMELY low noise - and stay that way, over time (that\u2019s the bugaboo). (EDIT: I forgot the 37db is from adding \"line stage\" gain to power stage gain - it's OK then, but still reasonably high)\nIf you see tubes graded \"MC phono grade\", that\u2019s what you need here. Frankly, it\u2019s almost baffling for an amp to have this much gain. The most I\u2019ve ever had is 33dB and even that seems crazy at times.\nAdding attenuators before the Prima Luna (adding after is a big no-no) will NOT help your case here. The amp\u2019s volume control should be positioned BEFORE the input tubes (as in 99.9% of all preamps), which protects them from overload by input signals - BUT the downside of this is that you get to hear the amps\u2019 \"full gain\"\nat all times\n. That means tube noise issues are made readily apparent,\nif your speakers are sensitive you\u2019ll hear\nlots\nof hiss noise floor too. If you have channel imbalance issues from the potentiometer tracking at low levels, then the attenuators can help with that - but not with the noise.\nSo if an integrated amp\nplace the volume control\nafter\ninput tubes, then your noise issues would be a whole lot better - BUT now you could easily overload the input stage (especially with modern DACs), and that will make your sound have lots and lots of crunchy distortion.\nincoming\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n29 posts\n01-08-2026 at 07:57pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAh OK thank-you for this\n@mulveling\nSo after your edit above I am reading this as the gain is still pretty high as a result of the amp design, and this would mean I should be looking for 'low noise' tubes rather than 'extremely low noise'?\nI thought the CV4003 would be a good choice, but am open to other suggestions.\u00a0 I have also been told the the middle two tubes are the most critical, and am fairly sure these are the gain tubes which would track.\nOverall though I think I may just have had bad luck on the tube front.\u00a0 The PL aren't supposed to be terrible, but I am disappointed in the NOS Brimar.\u00a0 The CV4003 that I JUST replaced was giving a different kind of whining on day 1.\u00a0 Oddly enough, a small tap with a pencil fixed that...I won't even start.\nI'm going to press ahead with the attenuators as this will make the volume knob travel more user friendly.\u00a0 As it is right now the fine level of control required is annoying.\u00a0 Using the remote it is hard not to go from too quiet to too loud.\u00a0 Using the DAC volume at 60% makes a good listening volume available at 12 o'clock instead of 8-9 o'clock and helps greatly.\u00a0 And thanks for the input on the channel imbalance too, the left channel is audibly louder at very low levels so hopefully the attenuators will address that too.\nFun stuff this audio game.\u00a0 Interesting, madenning, too expensive, but fun!\nincoming\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n29 posts\n01-08-2026 at 08:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAlso have a set of these to try as they were pretty well priced and I read a review somewhere that they went well with PL gear...what could possibly go wrong!!!\n6189 12AU7 ECC82 JAN SYLVANIA NOS BOXED VALVE TUBE - Langrex\nmulveling\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,475 posts\n01-08-2026 at 08:26pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOverall though I think I may just have had bad luck on the tube front.\u00a0 The PL aren\u2019t supposed to be terrible, but I am disappointed in the NOS Brimar.\u00a0 The CV4003 that I JUST replaced was giving a different kind of whining on day 1.\u00a0 Oddly enough, a small tap with a pencil fixed that...I won\u2019t even start.\nThat is most likely it, combined with your high-usage patterns. As you said: \"the system is used almost every day for 12+ hours\" - which makes me wonder, do you turn the amp on/off each day? Since these are preamp tubes w/ SS output devices, you might be far better off leaving the amp on 24/7! I\u2019m just thinking of many, many heating & cooling cycles loosening up those mica spacers over ","title":"Over-Loading Pre-Amp Stage???  Prima Luna Floyd","url":"https://forum.audiogon.com/discussions/over-loading-pre-amp-stage-prima-luna-floyd"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196998-40\nEdit\nUnderstanding Class D\nEnjoy.\nClass D Explained.\nmapman\n01-03-2026  3:23am\n6 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nfastfreight\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,326 posts\n01-03-2026 at 12:09pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks @mapman.\u00a0 i enjoyed this.\u00a0 I have also appreciated the AGD GaN amps at CAF.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n01-03-2026 at 03:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019m still amazed at the myths of Class D sound.\u00a0 When I ran ICEpower amps 10 years ago I\u2019d have audiphiles come over to my apartment in San Francisco.\u00a0 Not once did they ever say \"Oh, I can tell because..... that this is Class D.\"\nTruth is none of them could.\nBy extension, I have trouble believing that GaN amps are going to make anything very different in sound, but the desire for modernity in audio gear is ever-present.\nthriftyaudio\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n205 posts\n01-03-2026 at 09:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI tried a few different class D amps, before I realized they could not drive my Acoustat 1+1 speakers. Class D power amps have trouble with a low Ohm draw (0.5 for the Acoustats). If I did not love these speakers I would consider a quality Class D amp. In truth, my entire system was built around the Acoustat 1+1 speakers.\njohnnotkathi\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n146 posts\n01-04-2026 at 04:59am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI really enjoy my IOM class D amp and it drives my Thiels with ease\u2026..lots of quiet, clean and cool power.\nkerrybh\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n719 posts\n01-05-2026 at 12:02pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nExcellent video. This fellow has a series of videos explaining various technical topics related to audio equipment-the best I've seen. He clearly is well educated in the field, but is able to discuss the topics in a very understandable manner. Very useful even for those who are relatively knowledgeable.\nunsound\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n7,425 posts\n01-07-2026 at 05:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThank for sharing.\nMore to discover\nUnderstanding Jitter in PC Audio\nUnderstanding Class D\nUnderstanding peak current in amplifi...\nUnderstanding Speaker Output on Nikko...\nLooking for help understanding clock ...\nVolumio Primo Plus\nAntipodes Audio K40\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Understanding Class D","url":"https://forum.audiogon.com/discussions/understanding-class-d"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196919-102489\nEdit\nKirmuss Ultrasonic vinyl cleaner\nI've seen lots of discussions on here regarding ultrasonic vinyl cleaners and specifically the Kirmuss.\u00a0 After reviewing and researching a lot of forums, articles and videos on record cleaning ,I've came to some good conclusions and great results with my Kirmuss Ultrasonic cleaner and Okki Nokki vacuum vinyl cleaner.\u00a0 I've tried a couple different chemical solutions and after more research have finally come to my best results. I've been using Tergikleen as my go to cleaner and adding 20 drops into the Kirmuss water to good results and using the Kirmuss solution to spray on and do a couple rounds of the manual cleaing/multiple ultrasonic 5 minute cleaning. Then vacuum dry with ultrasonic pure rinse from Mofi. Great results but still some pops and ticks on some, even brand new records.\u00a0 Now after researching I've found the best way. Here's the best results yet.\nFirst add 2 ounces of Audio Intelligence ultrasonic cleaning fluid to the Kirmuss tank as its an enzymatic cleaner and leaves zero residue.\nSecond add 2 drops of Tergikleen to the full bottle of the Kirmuss cleaning solution ( which has 2% ratio of propylene glycol) and use this for the\u00a0 manual\u00a0 cleaning steps. The propylene glycol makes the ultrasonic bubbles attract to the vinyl and creates positive/ negative charge with the water removing all static and grime.\nDo 1-2 rounds of cleaning in the machine with the manual step.\nLastly do a final rinse with the Mofi ultrasonic pure rinse or any similar product and vacuum clean off.\nWow! Records i couldn't get rid of pops/ticks or noise are almost completely gone and the dynamics and openness of the sound now is phenomenal!\nThis is the only way to go after many rounds of various methods. I love it and now almost entirely play vinyl.\nGood luck and cheers!\nlnitm\n12-27-2025  2:48pm\n18 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nbillstevenson\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,319 posts\n12-27-2025 at 03:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOut of curiousity how much time per record would you estimate your cleaning process requires?\nlnitm\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n173 posts\n12-27-2025 at 04:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI do 3 records at a time and the process is about 20-25 minutes to do all 3. So not to bad, but worth the effort.\ntablejockey\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,431 posts\n12-27-2025 at 05:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n\"I do 3 records at a time and the process is about 20-25 minutes to do all 3. So not to bad, but worth the effort.\"\nI had \"Dr Kirmuss\" do the full \"restoration\" process to a precious 1958 \"stamper\" which seemed about the same time?\nHave you compared the 2 outcomes?\nlnitm\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n173 posts\n12-27-2025 at 07:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTable jockey, I think have have did 4 steps/runs through machine on a couple stubborn records with good results, but not really noticeable over 3 steps /runs through machine. I also do not ever see the \" toothpaste \" results coming out of any records like Dr.Kirmuss says. I only see a very light residue which is slightly whitish. Mostly on brand new or already cleaned records I'll do 2 steps and sound is amazing.\nlnitm\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n173 posts\n12-27-2025 at 08:13pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBTW associated equipment:\nPro-ject Xtension 10 Evolution turntable with Ortofon Cadenza Bronze cartridge.\nOrtofon st-70 step up transformer and Nordost Blue Heaven tonearm cable.\nMark Levinson no.526 preamp with built in phone preamp\nMark Levinson no.534 power amplifier\nRevel 228be speakers\nAll Cardas Clear interconnect and power cables\nClarus concerto power conditioner\nEvery little tweak or upgrade I can tell, so really clean , noise free records is a must.\nfatdaddy2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n551 posts\n12-28-2025 at 12:48pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBut is this method cryogenically sound? (LOL, I just use my trusty ol' Decca record brush before I play each side. 10 seconds, if that long.)\nbgross\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n541 posts\n12-28-2025 at 01:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI use an Audio Desk Vinyl Cleaner Pro. It wasn't inexpensive that's for sure but when you have as much invested in LPs as I do, it's a worthwhile purchase. Takes 5mins to clean and dry a record and does an excellent job vs the quickie lightweight machines I'd tried in the past. Just my experience\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n12-28-2025 at 02:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@lnitm\n\"The propylene glycol makes the ultrasonic bubbles attract to the vinyl and creates positive/ negative charge with the water removing all static and grime.\"\nI have a manual scrub/distilled water rinse/air dry setup\nDo you think adding something to my mix to get a positive/negative charge would be beneficial? If so, add how much of what?\n....................................\nAfter meeting Charles at the NY Audio Show, I posted this discussion here\nhttps://forum.audiogon.com/discussions/who-uses-kirmuss-restoration-system\nerock79\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n56 posts\n12-28-2025 at 02:18pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHave owned the audio desk and while it did a good job, it failed prematurely. Quite disappointing actually. Known manufact issues but out of warranty. I moved onto the Degritter. There is something great about the Degritter, not just in cleanliness, but in record static. It kills the static. Fully automated process.\nlnitm\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n173 posts\n12-28-2025 at 02:34pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nElliottbnewcombjr\nDo you think adding something to my mix to get a positive/negative charge would be beneficial? If so, add how much of what\nyes. Add 2% per volume of propylene glycol to mix.\nIn otherwords approximately 1 Oz per gallon of propylene glycol. It's what is in the Kirmuss solution that gives that charge to attract the bubbles to the vinyl. Add in the tank with distilled water.\nbgross\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n541 posts\n12-28-2025 at 02:40pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n5+ years for mine and never a glitch, not yet anyway. \"Known manufacturing issue\" - what?\nlnitm\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n173 posts\n12-28-2025 at 02:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nElliottbnewcombjr- revision on this\nIn otherwords approximately 1 Oz per gallon of propylene glycol. It's what is in the Kirmuss solution that gives that charge to attract the bubbles to the vinyl. Add in the tank with distilled water\nSorry but got this backwards.\u00a0 Add 2 ounces of Audio Intelligence ultrasonic cleaner to tank, Aprrox 1 Oz per gallon.\nFor the Kirmuss solution that you spray onto record for the positive/ negative charge in 2% by volume of the propylene glycol,\u00a0 so about 2 ounces per gallon of distilled water with 10-12 drops of Terg","title":"Kirmuss Ultrasonic vinyl cleaner","url":"https://forum.audiogon.com/discussions/kirmuss-ultrasonic-vinyl-cleaner"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196824-204925\nEdit\nlooking for someone to repair some amplifiers in florida MICHI,BEHOLD AUDIO,THRAX  TY\nTrying to find someone that can repair these amplifiers\nMICHI\nBEHOLD AUDIO\nTHRAX\nadvancecustomacoustics\n12-17-2025  8:02pm\n4 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nPost removed\nDec 19, 2025\nyowser\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n111 posts\n12-24-2025 at 02:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMaybe contact\u00a0Tom Tutay of Transition Audio Design in\u00a0Florida. I just did a search for amplifier repair in FL.\nadvancecustomacoustics\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2 posts\n12-29-2025 at 05:29pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nthank you i will try him see if he can help me.\nmrdecibel\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,321 posts\n01-02-2026 at 11:35am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy tech is Kris Rhoades, Fine Tuned Audio, in Winter Springs, Fl.\nMore to discover\nCan anyone recommend someone who reca...\nCan someone suggest a turntable shelf?\nSurely someone can weigh in\nIf you had a Benz cartridge would you...\nCan someone explain to me why : Accup...\nAntipodes Audio K40\nVandersteen Model 2c ii signature\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"looking for someone to repair some amplifiers in florida MICHI,BEHOLD AUDIO,THRAX  TY","url":"https://forum.audiogon.com/discussions/looking-for-someone-to-repair-some-amplifiers-in-florida-michi-behold-a"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n184625-3154\nEdit\nUpgraded Power Supply for Eero 6E Router\nHas anyone upgraded their power supply for an Eero 6 or 6E mesh router? I'm not sure about the voltage/amperage required. Thanks in advance. Jeff\nyoby\n05-25-2023 11:31am\n6 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\njerrybj\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n898 posts\n05-26-2023 at 12:38am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIs this of any help?\nhttps://support.eero.com/hc/en-us/articles/360039579631-Which-power-adapters-are-compatible-with-my-eero-\nyoby\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n539 posts\n05-26-2023 at 10:01am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@jerrybj\n: Thanks, I found that page already. The 27 watt model is the one that came with the Eero I bought. I was thinking\u00a0 more in terms of a linear power supply or an Ifi Elite model that would be compatible. Good listening. Jeff\nnuttyisms\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2 posts\n10-01-2024 at 10:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHello,\nThought I would add to this conversation as I have just purchased the new Eero Max 7 as a dedicated router for the Hi-Fi only and am looking for a decent power supply. The the router sits very close to my Roon One and Naim NDX2 Network Player & NAS. Rest of the house uses a different Ethernet & Wi-Fi.\nclustrocasual\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n145 posts\n10-12-2024 at 05:28am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI upgraded my cable modem to a good LPSU and the results were very noticeable.\nDon't think theres any good option to upgrade power for a USB-C device.\ndowntheline\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n11 posts\n01-23-2025 at 07:47pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI use an uptone js2 with good effect for my older usb-c based switch. I tried using the same custom ghent cable for my eero 6+ mesh device, but got an error at the correct 5v setting. Anyone try this with eero?\nrichardnyc2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n35 posts\n12-31-2025 at 03:02pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@nuttyisms\n@downtheline\nYes I am surprised there are not more discussions about this. I called Eero and spoke to their tech support. They were not very technical but were able to understand what I was asking for . On the back of the Eero power plug it lists\" Output:5V=3A\u00a0 /9V=3A 15V=3A.\"\nThat with the USB C is to create a \" handshake\" to make the power supply backwards compatible with other Ereo units. When I asked specifics about 3rd party power adapters with one of these specs ( In my case 5V 3A ) He said it will work but not for long. He said it will work for a few hours or even days but then the Ereo router will have an Error message. He went on to say that the routers are very \"sensitive\" to power supplies and no other power supplies will work. He said the charger for the Iphone 16 will work but not for long. I explained the problem with noise with stock switch power supples and he did not seem interested. What I am doing is just treating the power before it reaches the Eero power supply but I would love to learn if anyone has been able to make a LPS or high quaility switch power supply work with an Eero 7 Max. Thanks\nMore to discover\nHome network router question\nNew Router, New Streamer, New Questions\nLinear power supply for a router\nRouters/Ethernet Switch\nIs it time to Update Your Router's So...\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAurender N100H\nAyon Audio S-10IIxs\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Upgraded Power Supply for Eero 6E Router","url":"https://forum.audiogon.com/discussions/upgraded-power-supply-for-eero-6e-router"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196941-9533\nEdit\nI'm looking for a tube adapter to use a WW 274A in a Lampizator TRP....\n...and looking online I can\u2019t tell what might fit. The WE has four pins, two fat ones and two skinnier ones - like a 300B, the Lampi socket is an eight pronged one. I know nothing about the issues here so I need some help, please.\nI couldn't edit the title, the tube is a Western Electric 274A.\nfosolitude\n12-29-2025 11:13pm\n2 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ntoro3\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n525 posts\n12-30-2025 at 06:09pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have the Atlantic TRP which is designed with the 8-pin socket. Your 274A sounds like it uses 4-pin base. I did a quick search, and it would appear that you need the 4-pin to octal base adapter (UX4 to Octal adapter). Woo Audio (\nhere\n) provides an adapter for the 5Z3/274A \u2014> 5U4G.\nI would\ndefinitely\ndouble check this suggestion with the forum members at WBF\nhere\nfosolitude\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n84 posts\n12-31-2025 at 02:27pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks, toro3, I've ordered one from Woo.\nMore to discover\nConsidering Bricasti and Lampizator\nBerkeley Alpha DAC  vs Lampizator Big7\nReview: LampizatOr Lite 7 DAC DA conv...\nMeitner MA-3 vs Lampizator Baltic 4\nReview: Lampizator Amber DAC Plus DA ...\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nVolumio Primo Plus\nFocal 36 MONTH FINANCING\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"I&#39;m looking for a tube adapter to use a WW 274A in a Lampizator TRP....","url":"https://forum.audiogon.com/discussions/i-m-looking-for-a-tube-adapter-to-use-a-ww-274a-in-a-lampizator-trp"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n182116-140796\nEdit\nBypassing Caps - what is it really about?\nI understand the theory, but I've never been clear on the practice.\nSome say its to extend the highs, but I see people using stuffy vintage caps as their bypass. I've also seen people bypass incredibly good existing caps with more, like Dueland on top of Dueland. So what is this really about? Is it about mixing\ntones\nof the capacitors?\nclustrocasual\n01-16-2023  5:32pm\n18 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nmastering92\nDetails\nDiscussions\nPosts\nThis discussion\n870 posts\n01-16-2023 at 05:38pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nhttps://components101.com/articles/decoupling-capacitor-vs-bypass-capacitors-working-and-applications#:~:text=The%20Bypass%20capacitor%20is%20used,spikes%20on%20the%20supply%20lines.\nThe main capacitors, or AKA \"filter capacitors\" in an amplfiier will together with the power transformer(s) influence sound quality overall, but most importantly have great impact on the level of clarity and transient response in fast-paced music; also important for resolving nuanced details in slower tracks.\nclustrocasual\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n145 posts\n01-16-2023 at 06:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSo I\u2019m not talking about bypass circuits. I\u2019m taking about what hi-fi people call \"bypassing a capacitor\", which is running two capacitors in parallel, typically using a small value to piggy back the main value.\nnoromance\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10,536 posts\n01-16-2023 at 07:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nLarger capacitors act as inductors at AC frequencies. The larger the cap and the higher the frequency, the higher the \"resistance\" presented by the cap. This can\nimpede\nor roll off frequency response (impedence). A small value cap across the large value cap allows those frequencies to pass. Kinda like overtaking a slower semi on a small road.\nkijanki\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,510 posts\n01-16-2023 at 07:30pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nLarger capacitors tend to have higher inductance and dielectric absorption affecting higher frequencies the most.\u00a0 Bypassing with smaller capacitor (creating alternative path at high frequency) improves overall performance.\u00a0 It also allows to use cheaper main capacitor for cost reduction.\u00a0 Huge electrolytic caps (with higher inductance)\u00a0 in power supply seems to be ideal target for bypassing (speaker current closes thru them), but low ESR bypassing caps in parallel with inductance of main caps can create parallel resonant circuit.\u00a0 Using many filter capacitors in parallel reduces overall inductance.\u00a0 There are better, lower inductance \"Slit Foil\"\u00a0 BHC (now KEMET) electrolytic caps, but they only go to about 80V and are expensive.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n01-16-2023 at 07:35pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nnoromance has it more or less. Bypassing caps has it's basis in good EE design, especially older but also best bang for the buck designs.\nThink of actual caps as a series of parts:\n--> Capacitor --> Inductor --> Resistor --->\nAs the frequency goes up the cap no longer acts like a perfect cap and the inductance becomes a problem.\u00a0 By bypassing this with the appropriate values of smaller, higher quality caps you can get maximum value for your money.\u00a0 Imagine a situation when you need 100uF.\u00a0 The cheapest option may be an electrolytic but may become inductive too soon.\u00a0 So you buy a 100uF and bypass it with something pricier (per uF) but smaller, like a 2uF film or tantalum cap to overcome the internal inductance.\nThe reality of audio gear however is complicated.\u00a0 Sometimes a good bypass cap can help, sometimes it does nothing.\u00a0 I like Clarity CMR caps a great deal, but at values larger than 4uF or so they do audibly benefit from a small bypass cap.\u00a0 Below this value I've not found a bypass cap to help at all.\nI suggest you get a pair of Audyn TruCopper 0.1 uF film caps and experiment for yourself.\u00a0 The argument of the value of bypassing or not is not ever going to be solved in an online forum. :)\nditusa\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,474 posts\n01-16-2023 at 09:22pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThis is why JBL uses them. See below: page 3 see section\nHigh Resolution Dividing Network.\nMike\nhttps://www.lansingheritage.org/html/jbl/catalogs/1982-home.htm\ngs5556\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,284 posts\n01-16-2023 at 09:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBypass capacitors in crossover circuits are, in my opinion, useless. The reason bypass capacitors are used is to lower the overall impedance at frequencies where the equivalent inductance of capacitors has the dominant impedance, which is above the resonant frequency of the capacitor\u2019s inherent RLC. That frequency is way above the audio range.\nIf you take, say, an exact 10uF crossover cap and bypass it with an exact 0.5uF cap, all you have is one 10.5uF cap. However, if that 10uF cap has a tolerance of 5%, then it can have a 10.5uf capacitance on the high side. Which is exactly the same thing as the 10 plus 0.5 cap in parallel. So I don\u2019t see what benefit piggybacking a cap does to a crossover.\nIn power supply circuits, the RFI can easily exceed the resonance of the filter caps. That is why bypass caps are used, to lower the overall impedance at those frequencies to shunt the noise to ground.\nclustrocasual\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n145 posts\n01-16-2023 at 10:40pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks for the answers! I would not have intuitively thought about this because the caps I\u2019ve used (Audio Note, VCap, Jupiter, etc) all seem to have fantastic high frequency sound, even if their ESR measures this way or that. (I kind of wonder what kind of person uses VCap teflon or Deuland silver and still doesn't hear enough high frequencies detail)\nI do have a 350uF industrial filter cap on the preamp plate, and that seems like a target for bypassing to experiment with.\nAlso, from reading articles from various \"tone\" guys. they seem to bypass based more on blending the sound of their caps. For example I\u2019ve blended electrolytics on each wave of the rectifier, it seems strange each get a different brand of cap, but it did \"split the difference\" in sound...one Elna was too noisy, the other Kaisei was too intense.\nthespeakerdude\nDetails\nDiscussions\nPosts\nThis discussion\n483 posts\n01-17-2023 at 03:32am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe 10uF film capacitors we use behave like near ideal capacitors almost to 1MHz. Bypassing that capacitor with a smaller one is not going to have any benefit.\nI am not an electronics expert, but I know speakers well. For crossovers, this bypassing of a large capacitor with a small one, from what I have read, often very small, sounds like an urban myth that became real.\nThe effect of a capacitor in a crossover is related to its impedance at the frequencies you need it to work. Others have mentioned the capacitive element and inherent resistance and inductance. A 0.1uF capacitor is going to have lower inductance than a 10uF ","title":"Bypassing Caps - what is it really about?","url":"https://forum.audiogon.com/discussions/bypassing-caps-what-is-it-really-about"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196428-163057\nEdit\nAnyone else getting debilitating pop-ups?\nI'll have to quit using this, the only site I experience this on, anymore.\nericrhodes1\n11-15-2025  3:56am\n22 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nnoromance\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10,536 posts\n11-15-2025 at 06:13am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGet with the program and use an ad blocker. ;-)\nthecarpathian\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,296 posts\n11-15-2025 at 01:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou mean when you're trying to read a post but the page keeps jumping all over the place?\nIsn't it great...\nI'd get the ad blocker, but the ads usually are full of smokin' hot babes.\nDecisions, decisions...\nnoromance\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10,536 posts\n11-16-2025 at 03:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI wonder how much Audiogon makes from ads on the site versus the actual business. I would imagine it must be greater than the potential loss of business caused by the user inconvenience navigating around tiresome pop-ups, brand dilution, customer good will, and the overall tacky feeling of the experience.\nericrhodes1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n275 posts\n11-16-2025 at 04:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI was using my phone and every 2 seconds a full page Uber ad would pop up. So aggressively! Fortunately it hasn't happened again. So whatever was plaguing me was either only a temporary malware issue (temporary =unlikely) or Audiogon heard my pleas and fixed it.\nAdmin\nAudiogon Official\nericrhodes1\nIf the problem happens again, send a screenshot to\n[email\u00a0protected]\nof the ad or copy and paste the URL of the ad and send it.\nThen we can troubleshoot the problem. Ads should not hijack the forums to this extent.\nericrhodes1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n275 posts\n11-16-2025 at 08:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nericrhodes1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n275 posts\n11-16-2025 at 08:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@Admin\n@Audiogon Official\nLink to the picture\nhttps://photos.app.goo.gl/1MEYxfCnWgPMiod68\nWhen I clicked it, it genuinely took me to Uber? A service I don't even get where I live\nWhen I click the overlay saying \"go to source\" it brings me to the most recent Audiogon forum I was on.\nslaw\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n26,979 posts\n11-22-2025 at 07:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBeen happening for a while....some improvements since but definitely not fixed.\nericrhodes1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n275 posts\n11-23-2025 at 01:29am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nStill getting the full page Uber Pop ups\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n11-27-2025 at 04:46pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nsimilar thread, I learned about a browser named 'Brave', I am loving the simple page I'm viewing for the last 2 days.\nhttps://forum.audiogon.com/discussions/all-these-pop-up-ads-have-ruined-my-experience-on-audiogon\nPost removed\nDec 04, 2025\nAdmin\nAudiogon Official\nozzy\nCan you send me screenshots of what you are seeing? Or the URL?\nIf you know how to do a video recording that would also help.\nYou can send them to\n[email\u00a0protected]\nPost removed\nDec 04, 2025\nPost removed\nDec 09, 2025\nericrhodes1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n275 posts\n12-10-2025 at 09:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYa, well, I'm guessing those are the gratuitous ones we'll need to endure. It's the full page Uber ones that are completely crippling that suck. I'm certain Audiogon is hammering on those as I haven't noticed any recently. Knock on wood.\nPost removed\nDec 19, 2025\nAdmin\nAudiogon Official\n@all, Is this still happening? I was under the impression it was fixed last week. If it is, send me an email to\n[email\u00a0protected]\nIt would also help if you\u00a0 send me a screenshot of the ads or a video of them.\nericrhodes1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n275 posts\n12-21-2025 at 12:55am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNo, it's fixed. I think\n@ozzy\njust doesn't like your banner ads at the bottom. You guys nailed the full page pop-ups promptly. Thank you.\nPost removed\nDec 21, 2025\nAdmin\nAudiogon Official\n@ozzy\nI can't do anything unless someone writes to support\u00a0 and sends me screenshots of what they are seeing. A video would be even better.\n[email\u00a0protected]\nericrhodes1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n275 posts\n12-21-2025 at 10:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThey're the adsense ones.\nPost removed\nDec 22, 2025\nMore to discover\nAnyone else getting debilitating pop-...\nBricasti M5\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Anyone else getting debilitating pop-ups?","url":"https://forum.audiogon.com/discussions/anyone-else-getting-debilitating-pop-ups"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196849-213424\nEdit\nLow level Hum using Turntable\nHi. I am new to the forum and a newbie to audio. I inherited my Dad\u2019s McIntosh gear, refurbished it and built it out. My problem is that I have been struggling with been struggling with a low level hum only when playing vinyl on my turntable. Here is my set up:\nEAT B Sharp Turntable with a Hana moving coil cartridge connected to a Clearaudio phono stage, connected to a McIntosh C28 pre amp connected to a McIntosh MC 2205 amp that drives Dynaudio Special 40 speakers and a Totem subwoofer.\nCharacteristics of hum:\nthe hum occurs only when the stylus touches the record LP. The hum increases in volume. If I take the belt off the turntable and motor off with stylus in contact with vinyl there is no hum. If I turn the turntable motor \u00a0on I get a hum.\nI have checked the ground on the turntable (makes no difference on or off). I have plugged all power sources into a power conditioner and the turntable into the wall socket to minimize ground loop possibilities. Still a hum.\nI asked the EAT technician if it could be inadequate shielding of the motor causing electro magnetic interference (EMI) and he did not believe that was possible because the motor is low voltage.\nI am at a loss as to what to try next so any help is greatly appreciated.\nPete Dattels\npgdattels\n12-20-2025  6:24pm\n3 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nPost removed\nDec 21, 2025\nknock1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n387 posts\n12-21-2025 at 03:29pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n\"If I take the belt off the turntable and motor off with stylus in contact with vinyl there is no hum. If I turn the turntable motor \u00a0on I get a hum.\" So, the motor spins but the platter is stationary, this would indicate a problem with motor itself. Either electromagnetic interference or motor suspension transmitting mechanical resonance to the plinth and subsequently to the platter.\nlanx0003\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,051 posts\n12-21-2025 at 07:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe EAT tech might not be correct, since EMI energy is proportional to the square of frequency, the current (frequency-dependent), and the loop area\u2014not the voltage\u2014and inversely proportional to the distance from the source. So a low-voltage motor can still generate EMI.\u00a0 I will suggest trying the followings: (1) A linear power supply (confirm the voltage) and (2) different (low EMI sensitive) catridge.\nMore to discover\nNOS SHURE V 15 Type IV Turntable Cart...\nExperience with Transcriptor Turntables?\nTurntable isolation platforms\nWhat are your top 3 favorite turntabl...\nTurntable Consolidation. Is it a Cons...\nBricasti M5\nVandersteen Model 2c ii signature\nAntipodes Audio K40\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Low level Hum using Turntable","url":"https://forum.audiogon.com/discussions/low-level-hum-using-turntable"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196808-213291\nEdit\nVinshine Audio SUPPORT ISSUE!\nThis is for our audio community awareness!\nI have a defective Kinki Studio TaiHang and would like to repair it.\nI sent multiple emails to Alvin from Vinshine Audio since 12/4 but not a single response or acknowledgment.\nIs anyone encounter Support Issue with Vinshine Audio?\nAny advice on how to get this matter resolved? I'm greatly appreciated.\nhificd\n12-16-2025  5:05pm\n0 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nMore to discover\nVinshine/Alibaba..What to buy and where?\nVinshine Audio SUPPORT ISSUE!\nDenafrips/Vinshine not everything the...\nVinshine Kinki Studios Tai Hang\nShout out to Vinshine Audio and Alvin...\nBricasti M5\nAyon Audio S-10IIxs\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Vinshine Audio SUPPORT ISSUE!","url":"https://forum.audiogon.com/discussions/vinshine-audio-support-issue"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196741-365\nEdit\nVPN causing problems streaming music?\nI like to keep the VPN connected as I always forget to turn it back on after concluding my listening session. \u00a0It does wreak havoc while streaming, however. \u00a0The same sound quality is there (while active) but the number of freezes / drop-outs goes up exponentially. \u00a0Any way around this? \u00a0My router and controller are fairly new (updated 12 to 18 months ago).\nrussellrcncom\n12-11-2025  3:42pm\n1 response\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n12-11-2025 at 04:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nA VPN is essentially a privacy tool that \"bounces\" your network traffic through a new, anonymized server.\u00a0 There\u2019s no way to have zero effect, but you can optimize it somewhat.\u00a0 My VPN service lets me pick a location and shows me how busy the host is that is my VPN gateway.\u00a0 Try picking different locations for your VPN gateway.\u00a0 \u00a0In particular, you might want to pick a gateway that is close to your audio streaming provider, instead of close to you.\u00a0 Only experimenting will tell which is best.\nThis may also vary by VPN provider so worth trying a couple.\u00a0 I think some home routers have the ability to route 100% of your home\u2019s traffic through a VPN but this can be challenging, as many providers specifically block known VPN addresses.\nIf your streamer has any sort of buffer control (Roon does) set it to maximum buffer size/buffer time.\nMore to discover\nStreaming Sonos - Best H/T Receiver\nLiner notes in a streaming age\nAdvice for Streaming Newbies - Best B...\nOpinion: of the Hi-Res streaming serv...\nDigitally recorded vinyl vs streaming\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAurender N100H\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"VPN causing problems streaming music?","url":"https://forum.audiogon.com/discussions/vpn-causing-problems-streaming-music"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n1196986474\nEdit\nFinite Elemente Cerabase vs Symposium Rollerblocks\nJust wondering if anyone compared these two devices. I am considering using them under my transport. Other ones I am looking at are Equarack Equabearing and Aurios. Thanks in advance.\ntboooe\n12-07-2007 12:14am\n11 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\njfrech\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,816 posts\n12-07-2007 at 03:45am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHi, I've owned them both, but unfortunately not in use side by side nor on the same rack. Equipment was pretty much the same.\nThe Symposium rollerblocks (somes with a Ultra or Svelte shelf and also fatpadz) used on a Arcici Suspense and the Cerabase's on my Finite elemente master refererence rack.\nThe Symposium stuff always dramatically lowered the noise floor. All of it, whether the roller blocks, shelfs, footers etc. This is always a good thing in my mind. Better detail, better soundstaging etc. The roller blocks alone seemed to highten detail but loose some warmth. Certain things this is good for system tuning. Used with a Ultra or Svelte shelf, the detail stayed, and things warmed up some (with the noise floor dropping more). All is all, for the money, good, very good. It's addictive to, one you buy into it, you'll keep adding pieces.\nThe cerapucs I've always used with my master ref finite rack. My, those cerapucs improved EVERYTHING, nothing was a negative. Pretty much a rave. So much so, I bought them for every component I have. Started with one set, now have 5. Plus the cerabases are under my whole rack.\nNot sure this helps you out much, but it's my experiences...\ntboooe\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,009 posts\n12-07-2007 at 04:14am\nCopy Comment URL\nReport Comment\nEdit\nDelete\njfrech: Thank you very much for your reply. First of all, nice system! The all black components look awesome!\nRight now, I am on the fence between the Symposium Isis rack and rollerblocks or the Finite Elemente Signature rack and Cerabase. I like the open design of the Finite Elemente and the ability to adjust the shelf heights.\nIs there a reason why you did not use the Cerabase under your components? Also, can the Cerabase under your rack be used on carpets? Shouldn't they have spikes in order to coupple the rack to the concrete floor beneath the carpet?\nI noticed you mentioned you live in Austin? I also used to live there, north Austin to be exact, near Roundrock. We had a house near a golf course in River Walk. We used to go to County Line all the time! Austin is a great place!\njfrech\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,816 posts\n12-07-2007 at 07:11am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHi, you have a nice system to! Main reason on cerepucs vs cerabase is cost. cerepucs were about $450 a set. cerebase like $800 from memory.\nMy dealer said not to worry with the cerabases on carpet. It doesn't need that coupling. Anyway, it sounded so much better, I never tried anything else. I could cut out th carpet/pad around the bases. I think I could hide it enough if I ever moved. Also, when I owned Symposium, they said the Ultra shelf is just fine on carpet.\nI just moved to Austin a year ago. From Dallas. I left some great frieds, not sure I am sold just yet on Austin. I've been to Countyline. But my fionce's parents own a BBQ resturant in Llano, so I stick to that :).\nI don't think you can go wrong with either of these. Both good. I went with the Finite Elemente set up for looks. I was hoping for better than my Arcici + some symposium extras. The Finite combo is wonderful. Suprised me how much better it sounded. Part of all my equipment fits (like the amps), so to be far, the Arcici never held my amps. Not sure if that would have closed the gap.\nIf you like precision engineering. The Finite Elemente stuff is up there with my SME turntable in killer metal working. Fantisic build quility.\nJohn\neds60\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6 posts\n12-07-2007 at 09:40am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHi Tboooe, the signature rack has a weight limit of 25kg. If you have heavy components you cannot use it. I am 100% agreed with Jfrech. I have E12 with Harmonix RF-999MT under the spikes(I have tried spikes going thru carpet, with Harmonix is better. I have also tried Isoclean TT-009, still better than spikes going thru carpet). HD09 with Cerabase for power amp. I used them on carpet. I have not do comparison with Cerabase and Rollerblocks. I have Ultra with double sets rollerblocks on the top shelf for CD transport. They really improve the sound compare to the E12 alone. I find similiar result as Jfrech. With Rollerblocks alone, better highs but some of the bass is gone. With Ultra, it will add some bass. Background more quiet and better imagining. I have tried putting the Ultra on top of HD09, it doesn't sound as good as HD09 by itself. I put Aurios MIB between HD09 and power amp. The sound became smoother and more alive. I have ordered a set of Cerapuc planning to replace MIB. It will arrive next week. I will do a comparison with Cerapuc and Rollerblocks on transport.\nCurrently I have 4 sets of Rollerblocks, 2 Ultra, 2 Super and Svelte. I really like Symposium products. And I feel that Finite Elemente products are better(cost more as well). I have used Solidsteel 5.5 before. No comparison to E12.\nI have put 2 bags of lead shots(about 5kg each) underneath the rack on the carpet(not touching the rack). The sound became smoother.\nIf you want to see my system(mid price equipment, probably you may not be interest) I can email picture to you.\ntboooe\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,009 posts\n12-07-2007 at 05:35pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\njfrech, what a coincidence. I lived in the Dallas area as well, Coppell to be exact.\neds60, I would very much be interested in seeing your system.\nulysse21\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n13 posts\n11-17-2011 at 10:12am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAny new feed back?\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,311 posts\n11-17-2011 at 07:12pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSYMPOSIUM works better than anything else in my system.I have Rollerblock HDSE with #2.5 balls under my amp and Battery power supply for my TW ACUSTIC AC1 turntable.Using Rollerblock Series 2 under both my AUDIENCE line conditioners 6TS they improve bass ,highs, air, bass speed and staging its imazing.Also using ULTRA STEALTH amp stands under my amp and AUDIENCE units and svelte under preamp,tuntable power supply and preamp power supply.Everthing has improved my sound.Oh yes using SYMPOSIUM ULTRA STEALTH under my TW ACUSTIC AC1 turntable.\nextracampine\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17 posts\n07-11-2018 at 07:49pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have the Finite Elemente Cerabase Classic, and wondered if anyone in this thread knows the answer to my question -\nThese footers have a small hole near the base, with a screw poking out. What is the purpose of this screw and what should I do with it? I can just pull the screw out so it doesn't seem to be screwed in.\ncerrot\nDetails\nDiscussions\nPosts\nThis di","title":"Finite Elemente Cerabase vs Symposium Rollerblocks","url":"https://forum.audiogon.com/discussions/finite-elemente-cerabase-vs-symposium-rollerblocks"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196700-212914\nEdit\nThe value of a granite enclosure\nI build granite subwoofer enclosures including studio monitors towers and center speaker enclosures\nearthtone\n12-07-2025  8:08pm\n4 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nkoestner\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n742 posts\n12-08-2025 at 12:10pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHow do you attach the pieces together, and cut the holes for the drivers?\noddiofyl\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,644 posts\n12-08-2025 at 01:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI would imagine the only feasible way to cut granite for speakers would be a waterjet\nglennewdick\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,011 posts\n12-08-2025 at 05:40pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nbeing done:\nAcora Acoustics \u2013 Acora Acoustics\njsalerno277\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n533 posts\n12-08-2025 at 07:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nValue of granite- it depends on the cabinet design IMHO.\nBenefits include:\nLooks great\nHardness, rigidity and mass yield low energy absorption resulting in resistance to cabinet vibration.\nEnvironmental stability.\nRisks include:\nCost of Goods\nCost of Manufacturing\nSubject to ringing and internal reflections that can lead to distortion, including reinforcement and cancellation. This needs to be minimized by damping and computerized design to minimize parallel surfaces and avoid ringing, reinforcement and cancellation effects. This rises manufacturing cost. \u00a0If this is done properly, it has value. \u00a0If not, it is of questionable value.\nMore to discover\nGranite under wood for better isolation?\nAudioquest Granite..\nResults of granite platforms for Silverl\nGranite Audio 770r tube pre-amp with ...\nGranite Audio Triode Tube amplifiers ?\nVolumio Primo Plus\nAurender N100H\nAuralic Aries G2.1\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"The value of a granite enclosure","url":"https://forum.audiogon.com/discussions/the-value-of-a-granite-enclosure"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n182445-180038\nEdit\nCan I use Wifi for internet, and LAN on internal network only\nHi I am currently using wifi for my internet and am quite happy with it, but unfortunately my wifi does not work with Wake On LAN.\nWOL only works on my LAN card. my computer is not in a position to connect to LAN by cable, so I have it connected to my router using a wireless powerline transmitter.\nWhile this is connected my internet speeds are very poor even though I am connected to both the LAN and Wifi networks at the same time. If I disable lan, the speed improves again, but I cannot use Wake On LAN.\nIs there a way I can use my LAN only for thr internal network and use my Wifi for internet?\nvilas01\n01-31-2023  2:49pm\n6 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\njgoldrick\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n138 posts\n01-31-2023 at 03:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou should not connect the same computer to both wired and wireless at the same time.\u00a0 If that is what you are doing, it will cause issues with speed.\ngrislybutter\nDetails\nDiscussions\nPosts\nThis discussion\n3,627 posts\n01-31-2023 at 03:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nyou have several options, mainly if you have two routers, one from your internet provider and another one you are using for wifi - you can disable internet access on the second one You can connect to and configure each. But overall, I am a little confused about what your goal is\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n01-31-2023 at 05:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou can use a WiFi to Ethernet bridge.\nhttps://amzn.to/3WU4KaV\nTakes Wifi as input, Ethernet to your PC as output.\nvilas01\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1 posts\n01-31-2023 at 06:37pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHi I am currently using wifi for my internet and am quite happy with it, but unfortunately my wifi does not work with Wake On LAN.\nWOL only works on my LAN card. my computer is not in a position to connect to LAN by cable, so I have it connected to my router using a wireless powerline transmitter.\nWhile this is connected my internet speeds are very poor even though I am connected to both the LAN and Wifi networks at the same time. If I disable lan, the speed improves again, but I cannot use Wake On LAN.\nIs there a way I can use my LAN only for thr internal network and use my Wifi for internet?\nI got this,...\njoshua43214\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n67 posts\n02-22-2023 at 02:49am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou want something like this\nTo be really clear, I am not recommending this particular item. In fact this item is probably total crap since it was on the top of Amazon's sponsored list.\nI used to use one of these to connect my DVD player to my network since it only had ethernet. In your case, you would plug it into your computer - make sure you get one that is compatible with WOL. Try Microcenter to find something not made by random slave labor. Anything like this from Amazon marketplace is probably either a forgery or junk unless it comes from the manufacturers store.\nIMO, you should never (ever) use your personal computer over WiFi unless you really have a good understanding of internet security. I suggest you get your ISP to move your router next to your computer, and then set up a subnet if needed.\nI have a WiFi receiver downstairs than connects to a switch to provide ethernet to things like my server, 3d printer etc. It is really easy to set up, just watch some YouTube videos.\nkymanor1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n127 posts\n12-06-2025 at 06:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nit's just faster with a wider bandwidth, which makes it seem to be more clear and less noise. But in the end it's just faster.\nMore to discover\nBest quality connection from Network ...\nBetter CDP or network player?\nNew network receiver\nEnglish Electric EE1 Network Filter. ...\nDenon DN-C640 Network CD Player\nAuralic Aries G2.1\nVandersteen Model 2c ii signature\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Can I use Wifi for internet, and LAN on internal network only","url":"https://forum.audiogon.com/discussions/can-i-use-wifi-for-internet-and-lan-on-internal-network-only"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196624-87683\nEdit\nTape Preservation Article\nI am sure there is a paywall on this but for NYtimes subscribers it's interesting read.\nhttps://www.nytimes.com/2025/12/01/arts/music/iron-mountain-audio-tape-preservation.html\njbuhl\n12-01-2025  6:50pm\n8 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nonhwy61\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,459 posts\n12-01-2025 at 07:50pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGreat article.\u00a0 Micheal Fremer is in the comments section.\nThanks\ncleeds\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,635 posts\n12-01-2025 at 08:14pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHere's a\nfree copy\nof the article.\nwhart\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,406 posts\n12-01-2025 at 08:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIT is interesting. I have a friend who is a well-known audio guy who stored a BMW 2002 Tii in a limestone cavern in Pa., not sure if it was Iron Mountain. I know my old files were stored by Iron Mountain. The \"sticky shed\" stuff is not something I'd want to mess with-- some of the mastering engineers, like KG, deal with this. It's artifact preservation and a hope and a prayer to capture the thing- on digital-- which has its own problems in terms of longevity. I'd mention a client who has gone the extra mile, cutting discs on metal using DMM to preserve material. There is some science to this, apart from the \"dark arts.\" Preservation archivists are interesting folks. That's where I learned to appreciate digital, but I'm not sure it is a \"forever\" medium.\nmashif\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n505 posts\n12-02-2025 at 06:28am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGreat article. Those are dedicated folks doing a largely thankless job.\nI've done some tape restoration with a dehydrator for transfer to digital. But the tapes weren't in terrible condition, just old. It's kind of tedious and requires a lot of patience. Not a quality I naturally have.\nwharfy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n571 posts\n12-02-2025 at 11:31am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt's great that there are people doing their best to preserve our musical/cultural heritage.\nMany years ago, a fire at\u00a0Universal Studios Hollywood destroyed the master catalogs (500,000K recordings) of record labels absorbed by Universal. You can read about it on this free link.\nhttps://www.nytimes.com/2019/06/11/magazine/universal-fire-master-recordings.html?smid=url-share\nonhwy61\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,459 posts\n12-02-2025 at 12:02pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIn the comments sections someone states that the binding lubricant was changed from whale oil to a synthetic oil.\u00a0 Think of it as the revenge of Moby Dick!\nwhart\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,406 posts\n12-02-2025 at 03:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe \"whale oil\" thing was a trope, after the fact when that old JVC vinyl was used for the original MoFi series of discs. That was an amazing formulation, very robust, very quiet and has yet to be duplicated. No one to my knowledge actually knows what was in the compound, and some have suggested that it was the discontinuation of whale oil as a lubricant and heat stabilizer (\u2019aka mold release\u2019) that led to the demise of that formulation. I don\u2019t know.\nnormb\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n216 posts\n12-02-2025 at 09:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI had a patient years ago who was an archivist with the Library of Congress.\nHe brought me copies of the Nixon WH tapes, Johnny Cash/June Carter, Duke Ellington and several other WH concert performances done during that era - things never released commercially.\nHe said he was involved in the Herculean efforts to retrieve the missing \u201cRosemary Woods\u201d gymnastic deletion - which failed as they all did. From Nixon\u2019s lips to God\u2019s ears, we\u2019ll never know what was said.\nHe was bemoaning the loss of audiotape back then (circa 2001-2006) and talked about \u201cbitrot\u201d affecting CD\u2019s, DVD\u2019s and other digital data and how that data would likely be corrupted in 20 years. I heard similar things in the early 1990s from the IT geeks at Walter Reed\u2019s data center.\nI have DVD\u2019s I bought 40 years ago which still play just fine - so far.\nGotta wonder if the things we do, say, create now are going to be any more important to future archaeologists than, say, shopping lists gleaned from the trash piles of the Roman legionnaires stationed in Brittany or the cuneiform information encoded in clay in Babylon 5,000 ya.\nSome thing AI will just remember it all for us.\nMore to discover\nPreservation\nTape Preservation Article\nVolumio Primo Plus\nAyon Audio S-10IIxs\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Tape Preservation Article","url":"https://forum.audiogon.com/discussions/tape-preservation-article"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196090-23267\nEdit\nReducing Noise in Measurements Using REW and a Laptop\nI've been measuring various performance parameters of audio gear using my Laptop, REW and a Benchmark ADC1. I'm pretty certain I am Laptop noise limited.\nThe noise floor is usually at -110 to -120dBV. My different laptops have lower noise floors. I've seen -130dBV. But not the crazy -150dB or lower I see from professional test equipment. Background noise is about -72dBV RMS. I see over -100dB RMS on some spectra published (such as on ASR).\nThe way I usually set up is this: Signal source is either an HP339A (very clean signal generator) or a CD with test tone files fed into the DUT (device under test). DUT outputs to the ADC1 via normal XLR cables. ADC1 outputs a digital stream via a USB-B to USB-A cable. The USB-A end enters the computer. REW grabs the stream and does its analysis.\nClearly, my measurements are being limited by the noise floor of the laptop.\nHas anyone found a way to reduce the noise further? 20dB would be wonderful!\nDo those USB noise reducers work in this instance?\nkevemaher\n10-17-2025 11:16pm\n6 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ngs5556\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,284 posts\n10-18-2025 at 11:02pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nConsider the QuantAsylum QA403. On my unit the noise floor is -140 to -150dBV powered from a TP-Link USB hub. With the built-in signal generator active, the noise floor is -120dBV. It is nowhere near an Audio Precision analyzer but for $600.00 it is a bargain for DIY work.\nkevemaher\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n436 posts\n10-19-2025 at 04:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@gs5556\nThanks for the advice.\nI've just read a bit about the QuantAsylum QA403. This looks like a very useful tool.\nCan you explain your uses for it and how the user experience is?\ngs5556\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,284 posts\n10-19-2025 at 11:05pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI use it to test my amplifier builds for THD plus noise. Since I am not looking for specs proper to publish, the QA unit is used to measure noise floor and changes in distortion in the FFT display. I will run a test to set a base line, then change design parameters such as degenerating resistor values or pcb layout. Then I run the tests again to see if those changes resulted in different measured values. I can run tests over the entire audio band\u00a0 to check for things such as HF stability and distortion over the frequency spectrum. It can also measure power output vs distortion if you use a dummy load and enter the value of the dummy load resistor in the test settings.\nIf you want to use it as a troubleshooter to measure performance of amplifiers and preamps, the QA403 will enable you to see the noise floor of the DUT and also output to it a clean single ended or balanced signal at any frequency and measure the THD and noise of the DUT. It does it for both channels, which can show any discrepancies in the two channels.\nAt a fraction of the prices of commercial analyzers, I find the QA403 to be invaluable. Scopes, DMM's and listening only can go so far.\nkevemaher\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n436 posts\n10-19-2025 at 11:43pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@gs5556\nI am sold!\nJust to be sure, is it self-contained? Do I need REW or are plot and analysis both done in supplied software.\nThere's a bit of connector fiddle faddle to do given the BNC bulkhead connectors.I guess I only need to set that up once, so its not too bad.\nDid you buy in US or directly from the manufacturer? I assume this product is subject to the latest &%$#@* tariffs.\nThanks for this recommendation. I really rely on my measurement tools. Looks like this guy will let me see more of what the DUT is doing.\nkevemaher\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n436 posts\n11-27-2025 at 01:21am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWell, I almost bought this A/D but didn't. The \"getting started\" is vague and confusing. Their advice on power and signal cables is misleading in some places. I've emailed them a few times. the one response I got didn't help with my confusion. The QA403 has very specific requirements for a USB cable. It is dificult to find and I'm not at all sure that a cable I buy will work. I've been burned many times.\nI bought the Topping isolator. Did nothing.\nDoes anyone have experience with the JDS Synapse (I will need the max model for high current)? It got a good review on ASR. But so did the Topping. Is this a case of buy and try, toss it or love it? Or is it a no go because the Topping did not work?\nOr am I overthinking this?\nclustrocasual\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n145 posts\n11-30-2025 at 05:30am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nLarge brands will send their gear to facilities with super low noise floors and EMI countermeasures to be able to advertise the best possible measurements. It's hard to compete with that as a home user on a standard line. But remember on anything with regulation, voltage differences have little to do with musical reproduction compared to the time and current domain.\nMore to discover\nHelp with setting up a laptop lp to c...\nRecommendations for a Windows 10 equa...\nhas anyone succeeded in running the B...\nLumin U2 mini vs Mac laptop sound test\nHow about for LAPTOPs?\nVandersteen Model 2c ii signature\nAuralic Aries G2.1\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Reducing Noise in Measurements Using REW and a Laptop","url":"https://forum.audiogon.com/discussions/reducing-noise-in-measurements-using-rew-and-a-laptop"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n1060384415\nEdit\nPower Conditioning? What About Tripp Lite??\nTripp Lite makes power conditioners that are much more affordable than any of usual the audiophile brands (e.g. PS Audio, Chang, R Gray)... BUT are they good for audio? Has anyone used them?\nThey make both power conditioners and isolation transformers. Comments please???\npeter_s\n08-08-2003 11:13pm\n11 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nlistener57\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n730 posts\n08-09-2003 at 04:45am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have used for about ten years one of the power conditioners for my CD transport, DAC, Genesis digital lens, and SCE harmonic enhancer. The Aronov integrated amp goes separately into a different wall outlet via Mapleshade double helix mk 2 plus power cord for full dynamics prevented by the conditioner. I have been through many power fluctuations, and power outages with never any damage to front end components. Although not state of the art the unit is immortal and refuses to stop doing what seems to be an admirable job. The speakers at the other end are Duntech.\nloontoon\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n301 posts\n08-09-2003 at 12:48pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nJust my thoughts.\nabex\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n322 posts\n08-09-2003 at 06:41pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNo, Power Conditioner is going to be good really,but I have confered with someone that usess one and he is in the Biz and swears they are good enough for regular frontend components.\nAnytime you insert something in the loop it will have a sinature or take away from the original signal.\nYour Amp should be plugged directly in the wall BTW.\nI tried a Ctberpower unit a few weeks ago and it sucked! I am not using a unit of any kind at the moment.\nI do want to try other units,but at the moment they are not cost effective for me and would rather spend my $$ on components to improve playback!\nMaybe i'll run into someone that will allow me to borrow a better unit!\ncorona\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n132 posts\n08-09-2003 at 09:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPeter:\nTrip Lite? Yes I've tried them along with dozens of others;\nSAVE YOUR MONEY!\npeter_s\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,443 posts\n08-10-2003 at 03:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCorona - what do you recommend and why?. I've just started researching, and so far I have heard mixed things about Richard Gray, generally good things about the (expensive) PS audio units... What else?\nmejames\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n986 posts\n08-10-2003 at 09:22pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nthey suck.\ncorona\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n132 posts\n08-10-2003 at 11:06pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMejames: They do!\nPeter:\nTry-Exact Power [$2000]\nlistener57\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n730 posts\n08-11-2003 at 02:27am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPeter, If you want to surprise yourself, omit power conditioning, and simply plug your power cords into Mapleshade Clearview Double Helix Power Strip,with \"Plus treatment.\" This is what I do with my high resolution Big Boy system. As long as you do not need the protection of a more complicated conditioner then you will not believe your ears. There is really no logical explanation why this cheap unit lets a system perform up to its potential. This is not for listening during your worst local electrical storms or power crises as it does not \"protect\" or \"isolate\" like a megabuck unit. But, it definitely seems to allow great clarity and dynamics as if it is eliminating the powerline nasties. Mapleshade looks homemade, but delivers performance. Audiogon folks are either for them or against them as the design and execution are not conventional.\nYou have not mentioned what components you are considering plugging into your eventual purchase. Also. your budget for power conditioning.\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n102 posts\n08-14-2003 at 11:29pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'm with Listener57 on the Mapleshade double helix plus power strip. I couldn't believe how good my system sounds after the unit broke in after 100 hours or so. It's relatively cheap and the look is nothing to write home about, but it works great. I have all my components plugged into it. Even my Bel Canto amp, with the Nite pc, plugged in sounded smoother and more \"correct\" than going direct to the wall. I'm curious though, would my front end benefit even more with something like an Audio Magic mini digital. Anyhow, just my two cents, if you're looking for something relatively cheap that works well, you got nothing to lose with their 30 day trial period.\nwally_li\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n24 posts\n08-15-2003 at 07:25am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPeter_s, if you have chance, must try Harmonix ALS-777. I've one and tested in many setup, it seldoms let me down. It produce a very definite soundstage and quiet the blackground. Can't notice any current limitation even for a poweramp at 300Wx2.\nmoto_man\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n464 posts\n11-29-2025 at 01:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI had a Tripp-Lite isolation transformer. \u00a0After a couple of years, it developed a hum and I had to remove it. \u00a0I replaced it with a Shunyata Everest, and to my surprise, the Everest lived up to its hype and no looking back.\nMore to discover\nLine Conditioning and possible ground...\nHow Important is power conditioning i...\nPower Conditioning, Regeneration and ...\nPower conditioning from the ground up\nPower conditioning\nBricasti M5\nAntipodes Audio K40\nAuralic Aries G2.1\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Power Conditioning? What About Tripp Lite??","url":"https://forum.audiogon.com/discussions/power-conditioning-what-about-tripp-lite"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196563-161121\nEdit\nBass Trap or Snake Oil\nHappy holiday.\u00a0 This is a device no larger than the size of your head. You heard that right \u2014 these are advertised as a bass trap and a resolution enhancer. The wavelength of 25 hz signal is 45 feet.\u00a0 Even the 110 hz mid bass extends to 10.2 ft long.\u00a0 Is it possible physically to suck it up?\u00a0 Another form of Helmholtz resonator?\nlanx0003\n11-26-2025 11:10pm\n10 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nhelomech\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,042 posts\n11-27-2025 at 12:05am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nRegardless of whether it does anything (doubtful), someone will buy it and swear it parted the clouds and lifted them to audiophile nirvana.\njasonbourne71\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,904 posts\n11-27-2025 at 01:01am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAll of these contraptions that claim to absorb bass waves are useless. However hope springs eternal!\njperry\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,542 posts\n11-27-2025 at 11:56am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThis is a small bass trap that works. I have one.\nhttps://bagend.com/products/series/active-bass-trap-by-bag/\nlanx0003\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,051 posts\n11-27-2025 at 12:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@jperry\nCould you verify?\u00a0 You refer to something different called 'E-trap'.\njperry\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,542 posts\n11-27-2025 at 01:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe E-trap is a tunable electronic bass trap\nlanx0003\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,051 posts\n11-27-2025 at 01:26pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYep, I see that but these are completely different products.\u00a0 The RHR-21 is not active.\njperry\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,542 posts\n11-27-2025 at 02:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI know the RHR-21 isn't active. If you are looking for a small form factor solution the ELF is a consideration. I doubt that the RHR-21 does much of anything.\nAbsorbing bass with a passive device takes up more space.\nI thought (maybe mistakenly) that you were looking for a solution to a problem.\nlanx0003\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,051 posts\n11-27-2025 at 02:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGot it.\u00a0 Thank you,\n@jperry\n.\u00a0 How many you used and where do you place them?\njperry\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,542 posts\n11-27-2025 at 02:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have one in the front left corner of my room.\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n11-27-2025 at 07:10pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nit is a Helmholtz resonator kind of . It is designed to tune the room.\nLocation matter.\nI used 100 different one of different size but tubes (bottle) with variable neck lenght and volume...They not only absorb some sound frequencies but diffuse also some others.\nThose who think this did not work do not know acoustics basics...Most consumers buy they dont experiment then called \"snake oil\" products derived directly from Helmholtz research ...\nI dont think this one will do anything else than refine the sound, it takes many\u00a0 of different bigger size and well tuned to really\u00a0 eliminate\u00a0 bass standing waves...\nBut i never bought any resonators sold in commerce because it is too costly and it was more fun to make them and tune them using my ears...\nMore to discover\nMagnetic RCA  adaptors: Latest snake...\nSnake oil of the year?\nHas anyone heard the Miyajima 'Snakew...\nReview: Snake River Audio Mamushis In...\nReview: Snake River Audio Cottonmouth...\nAyon Audio S-10IIxs\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAurender N10\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Bass Trap or Snake Oil","url":"https://forum.audiogon.com/discussions/bass-trap-or-snake-oil"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196321-211560\nEdit\nSchool me on surge suppression/power conditioning\nLong time lurker off and on, new member.\nI moved to a rural area in north idaho that sees some surges(flickering lights) now and then plus some quick outages that last a few seconds to minutes to hours to days. Our area has all underground power and we have the big green transformer 350 feet away from our house down the driveway. Meter is outside the house on a pole that feeds 3 separate buildings. Our pump house, the stand alone garage, house.\nBefore i install my old school deftech powered towers and center along with my parasound hca1205 and Yamaha 3080 reciever id like to do some things to prevent damage to this equipment. I dont have a lot of money, and it IS a triple wide MH. So no room left in the inside breaker panel with it full of tandems and quads already. Thinking number #1 is a panel mounted surge suppression at the outside meter/mains shut-off to the 3 buildings. Im comfortable inside a breaker panel unless its pulling the meter. Each building also has its own breaker panel with main lug panel but too are also full since they chose the smallest panels.\nIve been reading, and definitely overwhelmed and confused. Ive got maybe a $500 budget for now. Just had to replace my heatpump ($6k)and have backup heat(woodstove $10k) installed so im kinda tapped for a few months.\nbudgetav\n11-04-2025  8:41pm\n25 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nwinoguy17\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,344 posts\n11-05-2025 at 12:41pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nhttps://www.crutchfield.com/p_756ELT15PF/Furman-Elite-15-PFi.html\nBeen very pleased with this , actually improved all aspects of soundstage in my system....\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n11-05-2025 at 04:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nComes up so often I wrote about it in blog posts:\nhttps://speakermakersjourney.blogspot.com/2023/10/time-for-new-surge-suppression.html\nhttps://speakermakersjourney.blogspot.com/2024/05/whole-house-surge-protectors-are-not.html\nbudgetav\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9 posts\n11-05-2025 at 06:38pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe problem with wirecitters review is its more of an infomercial for furman than anything. Going down the rabbit hole of online forums for this topic has led me to be skeptical of Wirecutter\nmark200mph\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n909 posts\n11-06-2025 at 04:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFurman and panamax have been great for me if your looking budget. I have used the it 20 I but there price is high.have been through many power outages and survived.a sometimes you can find a sale on ebay or Amazon or openbox on crutchfield. Good luck and enjoy the hunt.power surge protector are a must.\n052rc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n78 posts\n11-06-2025 at 05:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPower products can be risky. You never know what's going to happen until you plug them into your system and listen for yourself. The differences you hear can be big, small or nothing. And if there are differences, they're not always improvements. I would call The Cable Company. They specialize in keeping demo units of everything they sell. They'll send you a box with 4 or 5 options to try. Then you know for certain. 2 people can have very different experiences with the same exact product.\nbudgetav\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9 posts\n11-07-2025 at 02:55am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n052rc, thats interesting, I'll look into it. Im looking for protection for my budget equipment not looking for improvement in sound unless it just happens. Im a heavy diesel mechanic (10 years)after spending almost 10 years in a body shop, so my ears are definitely not what they used to be.\nbudgetav\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9 posts\n11-07-2025 at 03:35am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhat about buying used off ebay? Ive got my eye on a few different surgeX products\nsndsrtaud\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n53 posts\n11-08-2025 at 11:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHere's my thoughts after 50+ yrs as an audio enthusiast, SoundStage! reviewer, and shop owner. Before dumping $$$ into a power conditioner, you should determine whether you even need one as good ones are expensive.\u00a0 Get yourself a meter which measures line noise. A Trifield EM100 meter ($170USD) does a good job.Go around your house and take readings. If your readings are below 50 mV, you're good and don't need a conditioner.\u00a0 First, if you own your place, have a dedicated line installed. Then take a reading on that line. If the readings are still in the hundreds you have some options. In the past, I've had some PLCs in my system, but they never stayed too long, especially if I went with a dedicated line.\u00a0 My adopted kids were ADHD and asthmatic.\u00a0 Some research indicated dirty electricity might a contributing factor, so I bought some plug-jn G-S filters\u00a0 from Stetzerelectric.com.\u00a0 The current cost is $40 ea.\u00a0 I bought 8 for my 300 sq-ft home.\u00a0 After experimenting with placement, the reading I am was getting were n the 9-20 mV on the EM100 meter., usually in single digits in the dedicated line.\u00a0 Way cheaper than a decent PLC. I can hear no adverse effects of using them.\u00a0 Another benefit of the G-S filters is they can quash appliance transients running through your home's mains. Of course, YRMV. but I'm pretty sold on the G-S filters and have been using them for years.\nbudgetav\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9 posts\n11-09-2025 at 01:03am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nLike i said. Im not the greatest at hearing anymore due to my career choices. Its not so much power conditioning im worried about and affecting soundstage, im running 20+ year old def tech bipolar speakers all around and adding in an equally old parasound hca1205a to power them. The newest equipment i have is a few year old Yamaha aventage 3080 thats been in storage for 2-3 years.\nI own but its a mobile home triple wide, theres literally no free space in the breaker box to even add a tandem as its already full of tandems. Im rural, 30 miles from town and we get flickering and quick outages every time theres a windstorm or heavy rain/snow. Im most worried about surges to protect the equipment i have that i honestly cant afford to replace. TVs are cheap, decent reciever, amps, and speakers are not.\nsndsrtaud\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n53 posts\n11-09-2025 at 01:03am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGiven your location, I would also recommend that you remove all light dimmers and florescent bulbs/fixtures as they add a significant amount of noise to your mains.\u00a0 I still recommend the G-S filters.\u00a0 They are similar to offerings from \"audio\" companies, but the G-S can be had for a much lower cost.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n11-09-2025 at 10:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSo, wanted to reply about the Wi","title":"School me on surge suppression/power conditioning","url":"https://forum.audiogon.com/discussions/school-me-on-surge-suppression-power-conditioning"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196503-135729\nEdit\nHas Anyone Else Had An Issue With Notifications?\nI apologize for bringing this to the entire membership, but I have looked and looked for a \"Contact Admin\" or \"Chat\" feature and can't find anything.\u00a0 If I'm overlooking it, again, I apologize.\nI just logged onto Audiogon via my desktop computer for the first time in weeks (usually I access via my phone) and I had 51 notifications of people responding to posts I've made.\u00a0 Problem is, the 51 notifications are from just two people -- the same reply over and over.\u00a0 In the past, it would show I have two notifications.\u00a0 Now I have to click each duplicate name and response to clear my \"Notification Bell\".\nAnybody else encounter this??\nallenf1963\n11-21-2025 10:34pm\n4 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nllg98ljk\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n333 posts\n11-22-2025 at 03:40am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'm experiencing the same thing. I received 10 responses, all copies of the original, from one person.\nthecarpathian\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,296 posts\n11-22-2025 at 11:47am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt happens to me, also.\nI just click 'Mark all as read' and they all disappear.\nAdmin\nAudiogon Official\nallenf1963\nemail me at\n[email\u00a0protected]\nI can help.\nallenf1963\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n527 posts\n11-24-2025 at 03:48am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@thecarpathian\n-- Normally I would do that, but you risk accidentally deleting a message that isn't a duplicate.\u00a0 Especially when there were over 50 messages.\u00a0 \u00a0Thanks for the suggestion, though.\nThank you Admin!\u00a0 I appreciate the contact info.\nMore to discover\nBroken View Notifications\nnotifications issues\nNotifications when someone comments o...\nHas Anyone Else Had An Issue With Not...\nWashing machine done notifications\nAurender N10\nVolumio Primo Plus\nAuralic Aries G2.1\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Has Anyone Else Had An Issue With Notifications?","url":"https://forum.audiogon.com/discussions/has-anyone-else-had-an-issue-with-notifications"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196465-184827\nEdit\nPower generator or Power Conditioner?\nWhat is the updated conventional wisdom? \u00a0 Power regenerator or Power conditioner? \u00a0So many more companies manufacture power conditioners. \u00a0Stereophile reviewed both the PS Audio and AudioQuest products several years ago with recommendations seemingly nuanced against one\u2019s home electrical situation. \u00a0 What say you?\nsextantcv4\n11-18-2025  1:14am\n12 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n11-18-2025 at 01:55am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNuance is key. For affordability and cost/benefit I go with a Furman with voltage regulation.\u00a0 Expensive, but keeps voltage within 5 Volts all season round.\nThe PS Audio units are much more expensive, tighter voltage, some additional noise, which you may never hear.\nI save my actual generators for my home network and in case I need to run an electric blanket for a couple of nights without power.\nI find it helps to get\none of these cheap testers\n, plug it into your outlet near your audio and watch it for a while.\u00a0 It will help you see just what the normal state of your power is.\nkennyc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,146 posts\n11-18-2025 at 02:35am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe best is probably battery powered like a Stromtank.\nzlone\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,431 posts\n11-18-2025 at 02:50pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have tried both. I had the Furman Elite PFi-20, and it did a good job and gave me peace of mind that my gear was protected. I also tried the Puritan, and for me, it was a step back. Now I have a PS Audio P15, and this has been the best solution for my system. None of them were huge improvements, I think that I have pretty clean power. What the P15 brought was consistency, my system sounds good 24/7, Sunday night sound all the time. All that said, the biggest step forward in power space was running direct lines for my system.\njsalerno277\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n533 posts\n11-18-2025 at 08:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMembers are in a partisan two party system. \u00a0Those who vote conditioning and those who vote regeneration. \u00a0 I vote with both parties based on the quality of your \u00a0mains supply. \u00a0My voting rules are as follows:\nMains supply voltage is fairly consistent, the home circuit voltage is consistent (for example, no voltage drops from large appliances or air conditioning on/off sequences), mains supply is in a populated or industrial area or your home electronics subject supply to RFI; then, conditioning is recommended. \u00a0I use conditioning in my home in the NYC suburbs. \u00a0I use Shunyata and Audience\nMains supply voltage is inconsistent or the home circuit voltage is subject to inconsistent voltage; then the recommendation is power regeneration. \u00a0I use power regeneration in my vacation home in VT. \u00a0I use PS Audio.\nsextantcv4\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n18 posts\n11-18-2025 at 09:18pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nhttps://www.stereophile.com/content/analog-corner-315-electrical-cure\nalong with preceding stereophile reviews appears to tell a story supporting jsalerno's \"voting rules\".\nMy question: \u00a0(perhaps answered elsewhere previously?). \u00a0 What tool if any will help one determine if \"Mains supply is inconsistent... or home circuit is subject to inconsistent voltage....\"?\nheliguy420\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9 posts\n11-19-2025 at 12:11am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI use the Synergistic Research PowerCell UEF SE to power all my equipment including my amplifier. It is an older model, but seems to do the job quite well.\nsextantcv4\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n18 posts\n11-22-2025 at 12:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNice to hear! \u00a0 I have further looked at my electrical situation from my 20 amp non dedicated outlet\u00a0using a PS Audio Powerplant 20 (PS 20):\nMy input voltage on this PS20 reads anywhere from 120.3V to 122.3V.\nThe output voltage (going to my system) on this PS20 is consistent: \u00a0 119.5V\nCurrent pull (amps) from the outlet varies from 1.7 amps to over 3 amps depending on volume, and whether playing two channel or home theater...\n??Any thoughts from the group whether I would benefit more from a power conditioner than this PS20?? \u00a0 \u00a0 (yes I reckon there is only one way to find out)\nzlone\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,431 posts\n11-22-2025 at 02:29pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhat do your distortion numbers and incoming sine wave look like on the P20 scope? It sounds like you have pretty stable voltage, maybe all you need is a good conditioner. I think that\n@jsalerno277\ngave a really good answer, but in the end it is really trial and error with different products.\nsextantcv4\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n18 posts\n11-22-2025 at 09:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHi zlone (et al)-- \u00a0 to answer your questions:\n---my incoming (from the outlet to the P20) distortion tends to be around 2 percent\n---outgoing distortion (from P20 to my system components) currently shows. \u00a00.1 percent.\n---the incoming sine wave-- looks a bit jagged on the top and bottom (not sure how to read it) with the outgoing sine all the more rounded on top and bottom.\nFor distortion in general-- I have found the \"low distortion\" setting perhaps that much more clear for center channel dialogue than the \"high distortion\" setting.\nAny additional thoughts?\ntecknik\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n493 posts\n11-23-2025 at 06:42am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBefore spending that kind of stupid money get good male IEC, UPOCC or DUCC copper wire and connect a 100 watt 27R Aluminium power resistor to Live and Neuteral \u00a0and plug it into your wall outlet. Instantly you\u2019ll notice a smoother, quieter, deeper soundstage and after 100 hrs you\u2019ll notice scary black backgrounds, liquid mids and bass that will move you.\nsextantcv4\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n18 posts\n11-23-2025 at 10:52am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHi tecknik- \u00a0can you share a link on the how-to?\ntecknik\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n493 posts\n11-23-2025 at 12:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSorry I have no link a local guy helping me walked me thru it. Get the best\u201d I used a furutech NCF MALE, some old furutech DUCC copper wire approximately 8/10 inches for each L&N leg. Mounted the 100 Watt 27R aluminum power resistor on a piece of wood the same size has the resistor approx. 3 in long, used mundorf gold clip to attaching the resistor, super glued to the furutech ncf plug and plugged into a wall inlet. Not only did the system transform but the TV improved.\nyour welcome to PM me. There\u2019s a lot of tweaks people can do to transform there system without spending stupid money. Being retired you learn to do a lot of research on this stuff and after 35 years in high end audio I learned a little .\nMore to discover\nFlexible Power Cords\nCLASS A POWER RATING","title":"Power generator or Power Conditioner?","url":"https://forum.audiogon.com/discussions/power-generator-or-power-conditioner"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196477-200071\nEdit\nBass Traps\nAnyone familiar with these 2 types of bass traps?\nSynergistic Research Black Box\nPSI AUDIO AVAA C214\nI'm in the process of implementing room treatment and have decided on 32x32x6 hollow felt box clouds stuffed with 6\" Rockwool Safe and Sound acoustic insulation.\u00a0 This will offer an NRC value of 1.25. These panels are manufactured with WAF in mind,\u00a0 not that I actually need my wife's approval lol\nBut as far as controlling the bass, given the aesthetics of my room I'm limited in what I can and want to do. So I'm wondering how effective these two types of bass traps actually perform. Those huge passive black foam blocks and wedges won't work with the aesthetics of my room.\u00a0 Let's not pretend they are anything but conspicuous and visually disruptive.\nAgain I'm looking for feedback on the Synergistic Research Black Box and PSI AUDIO AVAA C214\nThanks!\nfire_water\n11-19-2025  3:58pm\n34 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ngkelly\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,124 posts\n11-19-2025 at 08:45pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNot much feedback on the base traps, other than wow! Somebody\u2019s getting serious about their sound system. Nice \ud83d\ude0a\nJust one question why Rockwall and not Owens Corning 703 rigid panel? Just my opinion, but a 2\u2019 x 4\u2019 panel looks better than a 2 1/2\u2019 x 2 1/2 ft.\u00b2 square on the walls also why black there are different colors of Gilford\u2019s of Maine fabric that you could use. Also, let\u2019s not forget about the Helmholtz diffusers.\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,788 posts\n11-19-2025 at 09:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have no experience with the\u00a0Synergistic Research Black Box but I wonder what it actually does and, afaik, it has never been measured.\u00a0 I own a pair of the\u00a0\u00a0PSI AUDIO AVAA C214 and I've measured them as well as heard what they do. See:\nStereophile Review\n.\u00a0 Price-y but they work.\nOf course, physical treatments generally preferred (and I do use them) but they can be bulky and aesthetically unacceptable.\nkennyc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,146 posts\n11-19-2025 at 09:38pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI read the\u00a0PSI AUDIO AVAA C214 Stereophile review as well. I love the adjustability which seems much better than a passive. \u00a0Pricey.\nfire_water\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n290 posts\n11-19-2025 at 10:35pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSo I just read this article.\u00a0 The author suggests that improvement is subtle and it's best to treat the room properly before adding the PSI?\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,788 posts\n11-19-2025 at 10:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSo I just read this article.\nWhich article?\u00a0 My Stereophile article?\u00a0 If so, I think you drew the wrong conclusion.\u00a0 What the C214 does is specific to the bass and will not affect anything else.\u00a0 That means only that it is not a comprehensive solution to room acoustics.\nBut what is?\n8th-note\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n484 posts\n11-19-2025 at 10:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI heard the Synergistic Black Box demonstrated at AXPONA a few years ago (I have not heard the PSI). It made a very subtle difference and I actually liked the sound better with it turned off. Some other people in the room seemed to hear more effect than I did and some said they really liked it.\nI've always been somewhat suspicious of Synergistic but that demonstration was very interesting. It was conducted by Ted Denney, the founder. I couldn't hear any difference with the HF-Ts but when he demonstrated the FEQ tower gizmos (the older version) I had to pick my jaw off the floor. They made a huge difference in the soundstage - improving it in every way. I hope to hear them again. It was one of the most impressive demonstrations at the show.\nfire_water\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n290 posts\n11-19-2025 at 11:45pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI don't think I misinterpreted what the author had to say.\n\"In every instance (stereo or multichannel, with or without DiracLive) and with almost every music selection, the effect of the AVAA C214s is beneficial, though in most cases (despite all that I have written) it is subtle\"\nkofibaffour\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n726 posts\n11-20-2025 at 12:01am\nCopy Comment URL\nReport Comment\nEdit\nDelete\ncan you not DIY?\n@fire_water\nAlso room treatment is not based on vibes\u00a0 but rigorous scientific and iterative processes\nfire_water\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n290 posts\n11-20-2025 at 02:29am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI guess I can buy the Primacoustic FullTrap bass trap and place it on the front wall like their engineer suggested.\u00a0 Bit it's not a very appealing box so I'd have to build a new cabinet out of solid wood and replace the fabric with a white one.\u00a0 I'm paying extra money to have it blend in with my room!\u00a0 That's just dumb.\u00a0 Lol\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,788 posts\n11-20-2025 at 03:05am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nfire_water wrote:\u00a0\u00a0I don\u2019t think I misinterpreted what the author had to say.\nWell, you certainly did not misquote me!\nHowever, that was a proviso inserted because I feared that my general enthusiasm might raise excessive expectations.\u00a0 It works well but it is not panacea.\nfire_water\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n290 posts\n11-20-2025 at 09:09am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nKR4,\nmy apologies sir! You are the author of this article?\u00a0 I didn't realize until now.\u00a0 Seeing how expensive this unit is I guess I was looking for an incredibly positive solution.\nronboco\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,135 posts\n11-20-2025 at 11:53am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@fire_water\nI recommend you consult an acoustician if you don\u2019t want to just guess. Jeff at HDacoustics is very good and can tell you exactly how to make your room sound it\u2019s best. Good luck !\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,788 posts\n11-20-2025 at 03:14pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSeeing an acoustician and/or learning REW are wise choices.\u00a0 Bass problems and treatment should be dealt with objectively.\u00a0 The graphs in the review are evidence of effectiveness.\nI remain an advocate for the AVAA traps but only if you have some assurance that they are the right choice and that there are not less expensive options.\nrick_n\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n491 posts\n11-20-2025 at 03:19pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have a friend who is running\u00a0PSI Audio AVAA C20s in all four corners of this listening room.\u00a0 This is a different unit than you asked about but I will say that this room running the active traps is the best sounding bass I've ever heard.\u00a0 I think this is worth pursuing.\u00a0 Good luck and cheers.\nketchup\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n710 posts\n11-20-2025 at 03:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nJust one question why Rockwall and not Owens Corning 703 rigid panel?\nOC 703 ","title":"Bass Traps","url":"https://forum.audiogon.com/discussions/bass-traps-6"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196383-202224\nEdit\nBasic surge protection with some noise filtering without strangling the amplifier?\nI\u2019m looking to get a basic multi-outlet surge protector that has some basic noise filtering and that has at least a few outlets for high-voltage equipment (amp in my case) that will not kill the sound of the amp.\nDo those of you with practical experience and/or technical know-how think that that the Furman Elite -15 PF i fits this description? \u00a0(From its own write-up, it does.) Are there other devices in roughly the same price range (<$1k), that I should consider?\nThe amps in question are a JRDG 625 V2 and a CODA CSib.\nFor one data point of comparison, I tried plugging the 625 V2 into a Torus RM-20 and while the sound floor did seem improved (from already very quiet to even blacker), the sound quality immediately suffered a lack of vitality and dynamism. So, the amp is not connected that way any more. \u00a0The other upstream components (pre-amp, Roon Nucleus One, streamer & DAC) do seem to like the Torus though.\nkirkwallace\n11-10-2025  6:23pm\n48 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nfastfreight\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,326 posts\n11-10-2025 at 07:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHello\n@kirkwallace\n,\u00a0 While\nI use a Puritan 156+ power conditioner / surge protection for my digital equipment, I have always plugged my amps directly into dedicated 20amp outlets.\u00a0 Your experience of throttling dynamics is consistent with many peoples findings, including my own, with many different power distributors, Not counting plain distributors with pure high quality outlets, but these offer no protection.\u00a0 My digital is in my office, and at my stereo I also have a Shunyata Denali V2 which I use for my Streamer , DAC and Preamp.\u00a0 I do hear an improvement with the Denali, but Amps are straight to the wall.\u00a0 I'm good with this, no direct surge protection on the\u00a0 amps, but understand the desire for protection.\u00a0 My amps have had a surge or two and they immediately go into shut down (Audionet).\u00a0 I also had the electric company instal a whole house surge protector, outside on my meter.\u00a0 I've had some big thumps without that tripping so not sure if it really helps sensitive equipment or not, but I've also never had damage since it was in.\u00a0 I think the digital / computer stuff needs protection more.\nI would expect the Furman to limit dynamics, but you never know.\u00a0 Go for it if it is returnable and give us a report!\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n11-10-2025 at 08:31pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe rule of thumb is always plug the amp into the wall without a power conditioner or anything else.\nMy experience supports this. I have tried the \"high Current\" outputs on power conditioners as well as dedicated high current power conditioner designed only for an amp. They all had a very negative impact on the amp.\nAlso, recommended, put your amp on a separate dedicated line from the rest of your equipment. This has a very positive impact.\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n11-11-2025 at 12:44am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI concur with this excellent\u00a0 advice...\nThe rule of thumb is always plug the amp into the wall without a power conditioner or anything else.\nMy experience supports this. I have tried the \"high Current\" outputs on power conditioners as well as dedicated high current power conditioner designed only for an amp. They all had a very negative impact on the amp.\nAlso, recommended, put your amp on a separate dedicated line from the rest of your equipment. This has a very positive impact.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n11-11-2025 at 01:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAny surge protector with series mode protection has excellent noise filtering built in, due to the nature of the protection.\u00a0 Furman with LiFT adds linear noise filtering.\nRegardless if what others say the \"rule of thumb\" is, I surge protect everything due to living in an area with continuous affronts to the electric grid.\u00a0 Damage warranties are almost never enforceable and I don't want to go through the hassle of repair or replacing anything.\nkirkwallace\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n474 posts\n11-11-2025 at 05:10pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThank you all.\nAlthough we don\u2019t get much in the way of lightening here in the Pacific Northwest, I do worry a bit about power surges from other sources. I\u2019m going to take Furman at their word about their \u201crevolutionary Power Factor Technology, providing a surplus current reserve of over 45 amps (peak) that enables your amplifiers to operate at maximum efficiency.\u201d That is a lot more than the 20amps coming out of the wall after all. \u00a0And as\n@fastfreight\nsurmised, I will have 30 days to return them if they do strangle the amps.\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n11-11-2025 at 05:34pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFor sure you are right for protection aspect.\nIf i was leaving in a location prone to sudden tempest any hours of any day i will do the same, nevermind a bit less satisfying sound, but i am lucky where i live is relatively calm and thunderstorms are previsible in some way.. Then i disconnected my amplifier ...\nAny surge protector with series mode protection has excellent noise filtering built in, due to the nature of the protection.\u00a0 Furman with LiFT adds linear noise filtering.\nRegardless if what others say the \"rule of thumb\" is, I surge protect everything due to living in an area with continuous affronts to the electric grid.\u00a0 Damage warranties are almost never enforceable and I don\u2019t want to go through the hassle of repair or replacing anything.\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n11-11-2025 at 05:35pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI live in the Pacific Northwest as well.and have had my amps plugged into the wall for 25 years with no ill effects.\nkennymacc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n747 posts\n11-11-2025 at 05:45pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI would highly recommend to you one of the Audioquest conditioners/surge protectors that are within your price range (new/used), like the PowerQuest 707.\u00a0 And if you could somehow find a way to move up to the Niagara 3000, that would definitely put you over the top for ultimate power and surge protection for the foreseeable future.\u00a0 I believe that the PowerQuest 707 would fit your needs just perfectly, and it doesn't cost an arm and a leg either.\u00a0 I have my very high powered integrated amp plugged into an Audioquest Niagara 3000 with incredible results.\u00a0 I found that the Audioquest line of conditioners/surge protectors are excellent at\u00a0 getting out of the way and not restricting the power and dynamics of high powered amplifiers.\u00a0 Even the lower priced Audioquest conditioners do an excellent job!!!\u00a0 Happy listening.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n11-11-2025 at 06:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@mahgister\n- There's","title":"Basic surge protection with some noise filtering without strangling the amplifier?","url":"https://forum.audiogon.com/discussions/basic-surge-protection-with-some-noise-filtering-without-strangling-the"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196413-146840\nEdit\nHooking up a pair of subwoofers directly from speakers\nGood evening,\nI purchased a pair of HSU Research powered subwoofers and I would like to run a pair of speaker cables from my main speakers directly to the subwoofers.\u00a0 I have 5 way binding posts so my thought is to have my subwoofer speakers cables go from my speakers using bare wire connection directly to the subwoofer\u00a0 \u00a0 \u00a0Then my connection to the amp would be from my main speakers using the banana plug connection.\nHere\u2019s the catch.\u00a0 My amp is an Audio Research VSI 75 and AR recommends a different method of running subwoofers which is different than most amps.\u00a0 \u00a0 The back of the amp has three speakers taps for each channel:\u00a0 0ohm (negative), 4 ohm &\u00a0 8 ohm.\u00a0 My main speakers occupy the 0 ohm tap and the 8 ohm tap.\u00a0 \u00a0What AR recommends doing is doubling up on the 8ohm tap for the positive cable for both the speaker and the\u00a0 subwoofer and then utilize the 4ohm tap as the negative terminal for the subwoofer.\nI don\u2019t see how running the subwoofers off of my main speakers would effect the amp at all given they are powered subs.\u00a0 They just need the signal.\u00a0 \u00a0AR said they have never run subs this way so can\u2019t confirm it would have any effect on the amp.\nAny thoughts before I blow my amp up?\nThanks in advance,\nMike\nmvrooman1526\n11-13-2025 11:46pm\n5 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nbigtwin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,626 posts\n11-14-2025 at 06:56am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhat does the Sub manufacture recommend?\u00a0 \u00a0My Rel subs are also powered, but the hookup is different for unbalanced amps than for balanced amps.\u00a0 I would be inclined to go with the recommendation from the subs.\npdspiegel\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n73 posts\n11-14-2025 at 07:38am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMany AR amps ground the 4 ohm tap as the center of the secondary. \u00a0Most other tube amps ground the common (0) tap.\nIf the 4 ohm tap is grounded then AR\u2019s recommendation makes perfect sense and should result in less hum/noise.\nIn any case, the sub input is a high impedance and either connection should not hurt your AR amp.\ntoro3\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n525 posts\n11-14-2025 at 11:46am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNothing to contribute beyond my own curiosity, but which HSUs did you purchase? Big fan of HSU and their family owned operation.\nKevin at HSU is very responsive by email - typically responds within 24 hours.\nmvrooman1526\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n44 posts\n11-14-2025 at 01:27pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThank you for the input.\n@pdspiegel\nThe 4ohm tap is grounded in the AR amps. \u00a0 I was pretty sure running it from the speakers wouldn\u2019t do harm but it makes sense that using their suggested method may provide better sound quality. \u00a0Thank you.\n@toro3\nI have heard only great things about HSU. \u00a0They came highly recommended for the money. \u00a0 I purchased two of the VTF-2 MK5\u2019s. \u00a0I can\u2019t speak directly to their performance yet but I can say that Kevin is extremely responsive. \u00a0I have reached out to him several times in the purchasing process and he responded within an hour.\nknotscott\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,430 posts\n11-15-2025 at 12:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf the sub has high level inputs, it should pose a very high impedance which should be a nothing burger for the amp.\u00a0 That said, to be uber cautious it'd be prudent to start with the volume levels way down.\nMore to discover\nHooking up Janis subwoofer\nHooking up a tube pre-amp to a processor\nHooking up a sub to my Spectral dmc-10\nHelp hooking up a new amp\nHooking up my JL sub\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nFocal 36 MONTH FINANCING\nAntipodes Audio K40\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Hooking up a pair of subwoofers directly from speakers","url":"https://forum.audiogon.com/discussions/hooking-up-a-pair-of-subwoofers-directly-from-speakers"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196097-7588\nEdit\nEliminating spade connectors, upgrading bits, soldering all of it in\nSharing, fwiw. Following a practice a local upgrade colleague did inside a Class A amplifier for me, I recently did the same type of thing on a pair of custom speakers I built for myself a few years back. The idea is around eliminating the last of any low grade connections I could find to see if I could upgrade the sound a little more.\u00a0 Finally got some time to do it recently, and reporting first results and questions floating around in my head now. Wished I had gotten to this sooner, actually.\nChanges:\n1. Removed a quad of quality gold plated spade connectors from speaker crossovers to rear speaker terminal (bi-wire binding posts) on the back of my main audio system speakers.\n2. Removed average run of the mill brass gold plated speaker terminals you can buy at Madisound or Solen. I always intended to replace these, and finally got to it.\n3. Added Cardas Copper binding posts, two pairs, for bi-wire configuration speaker connections to replace the prior pairs just removed. Sat in boxes a few years...\n4. Soldered everything back together with Cardas solder thus elminating all prior quality gold spade connectors, internal speaker wire soldered directly. All spades eliminated.\n5. Also noting these new/better and more secure connections from my existing Cardas speaker cables to the new Cardas binding posts just installed\n1st Listening Day:\nWishful thinking or not, I've been listening for a while, and something became immediately apparent now in question.\u00a0 Woah, is it actually smoother on top and is the detail down into the upper midrange actually coming through with a little more and\nnicer \"texture\"\nnow?\u00a0 I could attest it seems like I can hear a little bit more \"out there\", too nah, really, hmmm. Really liking the added change with tone/texture. Puzzling.\nSetup - first testing with my Class A 50 watt solid state amplifier, and can say its already approching the smoothness of my tube amps in terms of tone, texture, and how it reveals details in a smooth way. The prior connections were good, nothing wrong, well crimped, I checked all of it before converting everything over.\nI really was\nexpecting this type of change, kinda scratching my head.\u00a0 Its caused me to pause letting go of some of this gear too.\nI'm not sure if anyone has encountered this kind of change with such [seemingly] small changes. Hmmm. Should have known better, my prior pair of speakers had everything all soldered in like this with no spades.\u00a0 Maybe just a few weak links I had. Okay, just sharing in case anyone wants to comment or debate it at all. :)\ndecooney\n10-18-2025 10:06pm\nNext \u203a\nLast \u00bb\n51 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\njasonbourne71\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,904 posts\n10-19-2025 at 03:34am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou could have done one side at a time. Then listen in mono to compare the two sides.\ngdaddy1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n549 posts\n10-19-2025 at 06:09am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSTOP !!! First a word of caution. Heat will very quickly run down a speaker tab and ruin the fine little tinsel leads going to the cone. They are VERY heat conductive. You MUST use a heat sink to prevent any heat going down the wire. Especially the tabs on a tweeter are SOOO delicate.\nEasy solution. For many years I've used simple 'Play-Doh'. It's works exceptionally well as a heat sucker with a bit of protective moisture content. Roll a small line and then wrap it around the lead. It will absorb all the heat and quickly dry out and crumble off and your left with a perfect solder connection. This is a MUST do!\nEach clip connector\nhas 2 weak points. One is the crimp joint the other is the female pressure fit sliding on the tab. Eliminate that and you have one superior connection with one solder joint. The difference in resistance is measurable but slight. However, in a 3 way speaker there are 6 tab connections for all three speakers. That's two bad connections for each clip = eliminating 12 inferior connections. That is a total 24 inferior connections removed from both speakers. Remove the clips on the binding posts is another 8 connections. Totals now at 32 crappy connections you can correct.\nMany speakers also use clips on the crossover side as well. That would be 56 bad connections!! This all adds up. Where ever you can replace clips and use solder the resistance will go down.\nThere is no question there will be an improvement in resistance but by how much? Would it be audible? Depends on how many connections get replaced but the end result would be slight but an improvement nontheless! Lets not forget Audiophiles pay thousands of dollars to get an improvement that yield this kind of improvement.\nAlso... it gets better... as the clips age they will get worse with time and will increase resistance. The metal connection begins to 'Fret' and deteriorates. Solder will last much longer.\nThe exception is in a car with higher vibration you need to use clips. Solder can crack and fall off. In this case the clip is NOT superior in sound quality but is superior under vibration longevity.\nHigh quality home speakers should be all point to point hand soldered. Clips offer NO advantage. None! They are inferior connections.\nCongrats on taking the time to get connected properly! It's definitely better than it was!!\nEnjoy!\njonwolfpell\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n547 posts\n10-19-2025 at 01:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI think if I were to build my own speakers and / or amp - preamp, I would consider hard wiring both & eliminate the detachable speaker wires & power cords & possibly even the AC wall outlet too like larger industrial appliances. You can always turn the power off to the amp w/ the breaker if needed. Obviously this has some practical disadvantages but I would think the sound quality improvement would be clear.\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,218 posts\n10-19-2025 at 02:02pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nEvery single connector in my extremely modified Khorns eliminated, all point to point wiring, silver solder. Can't determine the improvement in isolation since this was done simultaneously with hook up wire,\u00a0 film cap, inductor, binding post upgrades. For sure using proper heat sinks when doing speaker work is critical, very fine wire in drivers, especially tweeters.\nI too have contemplated ridding components of IEC and hard wiring. I also see so many dissimilar metals used in connections, has to impact sound to some extent.\ngdaddy1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n549 posts\n10-19-2025 at 03:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPeople will purchase very expensive speaker cables and attach them to a binding post that has crappy little connector clips hidden on the inside just out of view.\nPoint to point soldered wiring is admired in amplifiers yet in speakers it seems to be of no concern for some reason. Is the thought of soldering too difficult? It does take a tiny bit more effort.\nI see clip connectors used in high end speakers. The reason they do this is simple, It's faster an","title":"Eliminating spade connectors, upgrading bits, soldering all of it in","url":"https://forum.audiogon.com/discussions/eliminating-spade-connectors-upgrading-bits-soldering-all-of-it-in"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196416-187969\nEdit\nMoon 791 and Qobuz Connect\nHello friends, this is driving me crazy and I would really value your advice. I recently tried out Qobuz Connect with my main system (Moon 891->...), and it\u00a0sounds distinctly better on it than Roon does. We can discuss why that might be the case, and I would like to hear your experiences on that. But first the mystery:\nI have a second system that starts with the Moon 791. Inspired by my experience with the 891, I decided to try QC on it as\u00a0well. Then (having bought the 791 from the Music Room), I realized the previous owner must have signed up for beta testing, because the existing firmware was all in beta with an older Mind Module that was incompatible with QC. I removed the firmware, did a factory reset, and updated again so now I have the latest firmware, including the Mind Module 2.05 which is necessary\u00a0for Qobuz Connect.\nI then eliminated any network problem by removing the ethernet cable traveling to the 891 (which is instantly discovered by QC) and plugged\u00a0that into the 791. Still no Qobuz Connect!\nI asked the guys at Moon to confirm with their engineering team that my unit serial is Qobuz-Connect-enabled in their entitlement system, and to confirm that the MiND 2.05 firmware assigned to this serial includes the Qobuz Connect module (and if needed, to re-push the correct branch). They flatly deny that such a possibility exists. Instead, they think that either I am doing \"something\" wrong (without being able to say what that something is), or that there is a hardware problem on the 791.\nThey may well be right about the hardware problem, and I might have to send it in, but before I bite that headache of a bullet, do you have any other suggestions about what I might be doing wrong? Do any of you have a similar experience? I\u2019m flummoxed and would value your collective wisdom.\ndebrajray\n11-14-2025  3:48am\n1 response\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ncleeds\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,635 posts\n11-14-2025 at 02:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGiven that you bought the unit used and the issues you're having, I'd send it in to Simaudio for service. Their service team is first-class and turnaround is swift - they serviced my Moon 430HA in about two weeks. They also have a domestic (New York State) shipping address, which will save you the hassle of dealing with customs. If you do it this way, you'll know that your unit is completely up-to-spec.\nMore to discover\nQobuz Trial\nQobuz Finally Offers Family Plan\nSerious Problems with Qobuz\nQobuz Connect\nQobuz sound quality intermittent issues?\nVandersteen Model 2c ii signature\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAuralic Aries G2.1\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Moon 791 and Qobuz Connect","url":"https://forum.audiogon.com/discussions/moon-791-and-qobuz-connect"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196328-178702\nEdit\nThe Worst Measuring Best Sounding DAC\nThe Worst Measuring Best Sounding DAC\n\"How can a DAC that measures so poorly sound so good?\"\nbolong\n11-05-2025  3:17pm\n8 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nmapman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23,710 posts\n11-06-2025 at 02:03am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHow do you measure what flavor of ice cream tastes best?\nwillywonka\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n516 posts\n11-06-2025 at 02:23am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMojo audio came to mind for me. It's apparent many things impact sound and we aren't aware of them all or how to measure them.\nrbstehno\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,653 posts\n11-06-2025 at 11:56am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI agree with the video.\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n11-06-2025 at 03:19pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy SPS Battery dac sound good. I tried more refined actual one.\u00a0 With no real advantage...\nWith a low cost system i compared low cost dac...\nSPS is rooted in an old chip Philips ...\nMeasures of specs tell only half the story...\n052rc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n78 posts\n11-06-2025 at 04:48pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI think mapman has the best answer. We can't measure everything we hear. If you are new to all this, you have to be careful where you get your information from. The concept of high end audio offends some people to the core of their being. They get so upset over it, they'll say anything.\nAny time you see someone trying to make a point using science and measurements, its a red flag. And its not that these things are unimportant. Most of the time its junk science.\nWhenever you see someone cry science and measurements, and you're just not sure what to believe, ask a question like this. \"Can you give a single reference from a credible source, where legitimate science was used to evaluate, review, compare, study, test, etc.., any piece of audio equipment ever made?\".\nThink about that for a moment. They can't give you a single example of anything they say is grounded in science. Its nothing more than pure emotions.\ninvalid\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,390 posts\n11-07-2025 at 12:03am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@052rc\nthey will give you blind tests and ABX tests, but I always say do those test with food and see what happens.\ndevinplombier\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,714 posts\n11-07-2025 at 04:45am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThis video is garbage and this YouTuber is a cretin. If this is what you base your system-building decisions on, y'all need help.\npickindoug\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n84 posts\n11-09-2025 at 07:27pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAlthough at the cheap end of the spectrum normally discussed on this group, I'll share a quick anecdote from a few years back.\u00a0 My first DAC was a Schitt Modi Multibit.\u00a0 I was delighted with the new audio toy, as it enabled me to rip CDs to FLAC, then play them back from a NUC.\u00a0 A year or so later, I became aware of ASR (launch the rotten tomatoes now).\u00a0 Based on measurements alone vs the Modi, I bought an SMSL SU-9n DAC from the 'zon, knowing I could easily return it.\u00a0 My NUC was able to feed both DACs simultaneously, and my preamp had a very easy toggle switch on the front panel that my wife could completely hide while switching between the two.\u00a0 I quickly lost track of which one I was hearing, focused on what I was hearing, and on 5 separate musical tracks, the SMSL DAC won.\u00a0 Hey, it's a cheap DAC, positioned in ASRs upper quartile, while the Modi Multi was in the lower quartile.\u00a0 They both sound good in isolation.\u00a0 But in this case, the better measuring DAC won.\u00a0 Speakers, ears, amps, etc, all play a role.\u00a0 Do I normally use ASR for audio purchases?\u00a0 No way.\u00a0 Amir hates tube gear, and that's 75% of what I use.\nMore to discover\nbest time/worst time to sell equipment\nNominees For Worst Recording Of All Time\nKlipsch!. The worst speaker company, ...\nARC SD135 will not turn on -- fearing...\nThe worst sentence in audio writing\nAurender N100H\nAyon Audio S-10IIxs\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"The Worst Measuring Best Sounding DAC","url":"https://forum.audiogon.com/discussions/the-worst-measuring-best-sounding-dac"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196313-2625\nEdit\nE-bay went from the best warenty to the worst\nI always like shopping ebay because you never had to worry about broken parts , missing parts................Not anymore, they joined the never pay group, make systems that don't help bad deals, loose something and you have lost your money..............I have 4 de4als like that going on right now and they tell you to wait 10 days, 13 days....NEVER FIX ANYTHING...................be careful when you buy on E-bay anymore, they won't do anything\nautospec\n11-04-2025  6:46am\n12 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nrwtooley\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3 posts\n11-04-2025 at 04:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\ncommiserating!\u00a0 I just got f'd by a UK seller who \"forgot\" to ship the stands with some old Pentachord speakers I bought for a premium price.\nI opened a ticket with eBay as soon as I received the package, which was promptly closed automatically because \"the package has been delivered\".\u00a0 So apparently sellers can ship an empty box and they consider that enough, buyers don't deserve any more.\nI guess I was due for a rotten deal, given how much I've scored off there.. but sadly I'm done with them for a while, gonna stick to usaudiomart and the Canadian version.\nartemus_5\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,016 posts\n11-04-2025 at 06:22pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCustomer service is just too much trouble. They need the time 10-13 days\u00a0 to train the AI customer service BOT to do the job.\noddiofyl\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,644 posts\n11-04-2025 at 10:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\neBay is the worst.\u00a0 \u00a0Rather take my chances on Craigslist.\nzx10\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n167 posts\n11-05-2025 at 02:33am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI've purchased over $15,000 worth of stuff on eBay and always been treated fairly. At least a dozen times over the years bought something that was not as described and they made the seller take it back , pay return shipping and eBay refund my PayPal every time. The seller doesn't get the money until buyer is satisfied. Almost all of it has been vintage stereo gear. However missing items I have not experienced so could be different. I hope you get a fair shake.\ntksteingraber\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n803 posts\n11-05-2025 at 02:49am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI agree with\n@zx10\nand have had the same experience. \u00a0It may take a week or two to resolve but I have always had issues resolved. \u00a0My credit card is used on paypal which is a second level of protection. \u00a0Also, I only buy from sellers with strong track record with + reviews. \u00a0Happy eBayer here.\ncoverallguy2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1 posts\n11-05-2025 at 06:24am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have to agree with the last two posters. Two months ago I bought two audio items off eBay from the same seller. One package arrived promptly (somehow slipping through the postal picket lines here in Canada, the other has still to arrive. I didn't follow up earlier on the second item due to the postal disruption. Last week I contacted the seller in California told her the item hadn't arrived, my refund was deposited to my credit card yesterday. I've told the seller that should the package arrive I'll contact her to figure a way of paying her for it - seems only fair.\nbassbuyer\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n947 posts\n11-05-2025 at 01:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSorry to hear. For what it\u2019s worth I\u2019ve had a good experience buying off of eBay over the years. \u00a0Haven\u2019t bought any high priced gear. \u00a0Mostly CDs and Blurays. \u00a0I have bought from outside the US and haven\u2019t had any unresolved issues. \u00a0I\u2019ve had to go back to sellers a couple of times but they always made it right. \u00a0Unfortunately it\u2019s definitely buyer beware online.\nPost removed\nNov 05, 2025\njl35\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,489 posts\n11-06-2025 at 12:32am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy experience with ebay support has been positive...both as seller and buyer\nPost removed\nNov 07, 2025\nzx10\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n167 posts\n11-08-2025 at 06:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nautospec and rwwtooley. If you have a problem with an eBay purchase first contact the seller and most times they will be cooperative because the last thing they want is negative feedback. Rarely if that doesn' resolve the problem , call eBay on the phone @ (866) 540-3229 if they don't pick up you leave a message requesting a return call and usually they call back within 5=30 minutes. Explain what happened and they will contact the seller. The seller knows if they do not resolve the issue they may be kicked off the site and that's the last thing they want. Being polite helps too , eBay is one your side. Their money back guaranteed is you get what you're promised or money back.\nautospec\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n521 posts\n11-09-2025 at 01:39am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThis guy would eat negative feed-back for lunch, he lied, he stole, and just about anything and even got around e-bay for a while......Sold the item twice and got the money.............It took ebay two weeks to get it figured out...................And he;s still on ebay as good as he ever was..........Ebay dropped the ball and did nothing to fix it, but tell me they are sorry..............\nMore to discover\nbest time/worst time to sell equipment\nNominees For Worst Recording Of All Time\nKlipsch!. The worst speaker company, ...\nARC SD135 will not turn on -- fearing...\nThe worst sentence in audio writing\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nRSX MUSIC SERVER RSX MUSIC SERVER\nBricasti M5\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"E-bay went from the best warenty to the worst","url":"https://forum.audiogon.com/discussions/e-bay-went-from-the-best-warenty-to-the-worst"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196323-2603\nEdit\nI need (want, can afford) a tube tester, maybe other simple testing equipment Help me!!!\nPlease help me find a tube tester.\u00a0 My goal is to be able to do more than \"swap tubes\" to identify problems such as bad/dying tubes, channel imbalances, etc.\nTo the extent that it matters, I'm hoping to be able to test typical preamplifier tubes, 12au7, 6922, 6H30P, 6Sn7, etc, power tubes and rectifier tubes would be great if I can also test them.\nI'm looking for recommendations for brand/model and also where to buy.\nSame thing with regard to what is better for diagnosing versus a decent multimeter (I have this).\nThank you all in advance.\ngthirteen\n11-05-2025  2:16am\n7 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n11-05-2025 at 02:22am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou probably want an Amplitrex AT 1000\nhttps://amplitrex.com\nIt does a large varieties of tests for hundreds of tubes. Excellent device.\noddiofyl\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,644 posts\n11-05-2025 at 02:30am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe Amplitrex is the benchmark.\u00a0 \u00a0 I have a Hickok 800 , I got lucky to find a mint one that was serviced a few years ago.\nIf you can afford an Amplitrex that's the way to go.\u00a0 \u00a0 \u00a0Most old testers are rough and in need of service.\u00a0 \u00a0There are some nice ones out there but they are few and far between and are $$$\nlarryi\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,674 posts\n11-05-2025 at 04:03am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI own an Amplitrex. \u00a0The best thing about it is how simple it is to use and how easy it is to get both a simple assessment (strong, wesk, bad) and specific measurements to compare with expected numbers. \u00a0If you are more advanced in your testing needs, it will provide tube tracing.\nI spoke to a tube expert who owns about a dozen testers, including two Amplitrex machines. \u00a0His favorite is the eTracer, but it is best for someone testing many tubes at a time and someone who is technically advanced.\ngthirteen\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n364 posts\n11-05-2025 at 03:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAmplitrex AT 1000\noff to do some research\nthank you, fine friends!!!\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n11-06-2025 at 09:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI advocate, if you have tube equipment, AT LEAST a simple compact portable tester, to test the fundamentals\nrather than stay blind\nSeller says it works, asking $80, might take offer\nhttps://www.ebay.com/itm/187671354575?mkevt=1&mkcid=1&mkrid=711-53200-19255-0&campid=5338381866&toolid=10001&customid=a723a8f4-bb53-11f0-8372-366165326233\nPeople say, you have to have Mutual Conductance. I'm here to tell you, ok, if that's what you want, but I've gotten answers for 42 years out of my Accurate 157, found weak tubes, tubes with shorts, compared 'matched sets' when I buy them, you can get a lot of confidence out of these simple testers.\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n11-06-2025 at 09:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI don\u2019t like scroll wheel type,\ncan you get separate booklets for this unit?\nhttps://www.ebay.com/itm/187716787044?mkevt=1&mkcid=1&mkrid=711-53200-19255-0&campid=5338381866&toolid=10001&customid=204bd776-bb57-11f0-9616-613032366639\n..............................\nthis site just popped up, I don't know anything about them,\nanybody recommend them?\nyou can download this\nhttps://vintagetubeelectronics.com/wp-content/uploads/2025/07/Hickok-800-User-Manual.pdf\nmany manuals are here, they open, ready for download\nhttps://vintagetubeelectronics.com/tube-tester-manuals/\nhe restores/calibrates/sells testers\nthis is listed for $370.\nhttps://vintagetubeelectronics.com/2025/10/31/restored-and-calibrated-precision-920-tube-tester-for-sale/\nlarryi\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,674 posts\n11-07-2025 at 12:00am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019ve used the Orange tester and it too is extremely easy to use like the Amplitrex. \u00a0It does not test as wide a variety of tubes as the Amplitrex and it doesn\u2019t test at full power which stress tests the tube. \u00a0But, it does weed out bad tubes and it is somewhat of a tough grader; not everything gets a top grade like the TV-7 seems to do. \u00a0With the Orange you might have to quickly repeat testing because it will often fail a good tube on the first attempt because the tube has not been warmed up enough.\nWhatever you get, be sure to buy socket savers for the types you will be testing a lot. \u00a0You will wear out sockets by the act of inserting and pull out the tube, so you want to wear out the socket savers and not the socket on your tester.\nMore to discover\nWhy one side is very much louder than...\nUX-3 vs UX-1 or other Hi-Rez player?\nAbsolute Sound - do we really need an...\nphilips 867 turntable : ANOTHER quest...\nWilson Audio Sabrina . . . I'm smitte...\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nRSX MUSIC SERVER RSX MUSIC SERVER\nVolumio Primo Plus\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"I need (want, can afford) a tube tester, maybe other simple testing equipment Help me!!!","url":"https://forum.audiogon.com/discussions/i-need-want-can-afford-a-tube-tester-maybe-other-simple-testing-equ"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196197-90040\nEdit\nWhat do your hard-earned dollars go toward?\nAfter finding the \"perfect\" system within your budget, how do you then tweak it for maximum performance?\n1. Mechanical isolation e.g., racks and footers\n2. Electrical isolation e.g., power conditioners, power supplies and dedicated lines\n3. Acoustic isolation e.g., room treatment\n4. My system is just fine out of the box and I would rather spend money on more music\n5. Other\ntcutter\n10-28-2025  1:26pm\n23 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nnewton_john\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n611 posts\n10-28-2025 at 01:54pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n1. Quadraphire Racks, Isoacoustics Gaias/Mini Pucks/Oreas and Mana Acoustics Reference Table for turntable.\n2. Linn Uptopik PS upgrade to DSM streamer, ATL Hifi LPS for ROCK NUC and Sbooster BOTW PS for ethernet switch\n3. None other than DSP, Linn Space Optimisation\n5. Synergistic Research Tranquility Pods\nPost removed\nOct 28, 2025\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n10-28-2025 at 05:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSpeaker Cables\nAmp Power Cord\nInterconnects\nPower Conditioner\nDirct Lines\nRest of system Power Cords\nRoom Treatments\nMechanical Isolation\nIn that order in general\nwhart\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,406 posts\n10-28-2025 at 08:54pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPerhaps it is assumed in your questions, but I would start with the positioning of the speakers in the room and how they interact with the room acoustics. I never got all spendy on acoustic treatment- I do use bass traps, but get a lot of mileage out of normal home furnishings including rugs, window treatments and some absorption from furnishings like sofas, pillows, etc..\nAs to accessories, the first thing I\u2019d look at is your electrical power. And by that, I\u2019m not suggesting buying a black box, but having an audit done of the power from your meter through the service panel and breakers to the lines feeding your system. Cleaning up old, corroded or iffy contacts, replacing questionable breakers, making sure your have a good connection to ground, are all things a competent electrician can handle for relatively minimal cost.\nWhole house surge protection (type II) is good but not a complete solution- some use point of use (type III). I use a big Iso transformer to feed my main system which has a surge board in it, and obviates the need for Type III devices.\nMechanical isolation for a turntable is pretty critical and if you have a low mass table, you can probably get away with a wall shelf. I had to go the extra distance, given a high mass table in an old wooden house.\nWires- no one brand is going to be the \"best\" for all systems and some folks don\u2019t think power cables, interconnect and speaker cables meaningfully differ. I can hear the differences. The best option(s) in my experience are to listen to the manufacturer/dealer recommendations (you can be skeptical if a dealer is promoting a particular line if only for profit) and to actually try different cables in your system once it is optimally placed within the room. That takes a little time- not fast A/B comparisons but living with the cables over time. This can obviously get complex when mixing and matching.\nI\u2019ve been pretty deliberate in my use of accessories (a/k/a \"tweaks\") since I\u2019ve found that while some may bring an improvement in one area, they can potentially create downsides in other areas (I experimented with more than 1/2 dozen \"footers\" on the tube power supply to my phono stage, and found that some gave me more clarity at the expense of increased stridency). So, that\u2019s the last area I\u2019d focus on. It\u2019s a process to optimize a system in a given room and takes time in my estimation.\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n10-28-2025 at 10:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBooks and music.\nThis cost me a fortune...\nAll my life...\nMost people dont need books...\nBooks cost way more than audio if you dont read novels...\nNowadays a very well optimized low cost system can be very satisfying...\nI dont invested money in audio, i experimented in acoustics once\u00a0 at peanuts...\nWith success...\nNowadays with free DSP in Foobar or in better hardware\u00a0 and low cost small\u00a0 speakers and a well optimized room,minimal audiophile experience cost almost nothing...\nBread and meat cost way more ...\nAnd tomorrow you will not speak about audio but about bread and meat...( i spoke for the average dude here)\nHow many jobs will disappear?\nHow many wars will be started before\u00a0 some idiots realized it is useless?\nAudio problems today are simple to solve and cost nothing ...\nBut we need to understand basic acoustics to do so...\nWhat matter is not the brand or so much\u00a0 the price but acoustics and the electrical grid...\nthecarpathian\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,296 posts\n10-28-2025 at 10:13pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@mahgister\nTu es sage, mon ami...\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n10-28-2025 at 10:45pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWisdom is nothing without love and generosity...\nYou have both and more humor than me ...\nI can only say i was lucky to accept your first mate...\nmy best to you... As always and forever...\n@mahgister\nTu es sage, mon ami...\nrsf507\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,596 posts\n10-28-2025 at 10:47pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe wife!\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n10-28-2025 at 10:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI gave all my money to my wife.\nShe kept it for me and the children.\nIf not, i would have no house only books and cd, and no wife either...\nThe wife!\nincorrigable\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n219 posts\n10-29-2025 at 04:25am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWomen and wine.\ntravelinjack\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n303 posts\n10-29-2025 at 04:59am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCollege fund.\nRetirement fund.\nFamily vacations.\nparkergetdean\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,199 posts\n10-29-2025 at 06:15am\nCopy Comment URL\nReport Comment\nEdit\nDelete\ngroceries. At ALDI. That's what I can barely afford now, even Target's food section is a luxury\nfaustuss\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n973 posts\n10-29-2025 at 07:33am\nCopy Comment URL\nReport Comment\nEdit\nDelete\noberoniaomnia\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n408 posts\n10-29-2025 at 11:40am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNew music, particularly art-editions (e.g. 128-label friendship editions, signed releases). Non-fiction books. Charitable giving. both $$$ and in-kind.\nknotscott\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,430 posts\n10-29-2025 at 12:14pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n1, 2, 3 & 5.\nI try to focus where the low hanging fruit is, but it\u2019s fair from a exact science.\u00a0 \u00a0Lots of trial and error, and lots of evaluation hours to determine whether a tweak is beneficial overall or","title":"What do your hard-earned dollars go toward?","url":"https://forum.audiogon.com/discussions/what-do-your-hard-earned-dollars-go-toward"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196289-17600\nEdit\nCapacitors\nDoes it really matter if I use a 400V vs an 800V capacitor as long as I get the uf right?\nmaprik\n11-02-2025  3:52pm\n13 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,218 posts\n11-02-2025 at 04:33pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nUnless you have specs, I'd never replace with lower voltage cap, there is a reason certain voltages chosen. You can replace lower voltage with higher voltage, may or may not be a reason for this.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n11-02-2025 at 05:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYes, but depends where.\nIn tube amps and preamps is the only place where you are likely to actually run into this scenario.\u00a0 In signal, as opposed to AC filtering, so long as you keep a 25% margin, get the smallest that\u2019s appropriate.\nSo if you have a signal that is nominally 300V then anything 400V or more is fine.\nHowever, in an AC power supply filtering applications having a cap which is higher than the peak of the AC waveform AND is intended to be a smoothing capacitor (i.e. used with pulsing DC)\u00a0 is critical.\u00a0 \u00a0A cap which is not will short in minutes because the current, not the voltage, will cause overheating.\nJust as background, film caps often can't get smaller than a certain V just because they are too hard to manufacture.\u00a0 So your smallest V choice may still be greater than you need.\u00a0 In speakers for instance, anything over 80V is fine, but I can't really find a film cap less than 400V\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n11-02-2025 at 05:45pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPS - DIYaudio is a great place for questions like this and has a bunch of friendly builders and modders who would love to help you out.\ntoddalin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n708 posts\n11-02-2025 at 07:54pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYes and no.\nNo in that even at 400 volts, you would well exceed the power handling capacity of all but maybe the most powerful amplifiers and 800 volts would just be more over-kill.\nYes in that the different voltage ratings are most certainly associated with different materials construction and many people can hear a difference in this aspect.\ngs5556\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,284 posts\n11-02-2025 at 11:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe answer to your question is an unequivocal NO. Unless you know amplifier as well as the designer, never substitute a lower voltage capacitor than the rating of the existing. Over voltage an electrolytic capacitor and it can explode. Over voltage a film cap and it can short.\ntoddalin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n708 posts\n11-02-2025 at 11:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTo calculate the capacitor voltage rating for crossovers, follow these steps:\nDetermine the maximum voltage that the crossover will encounter during operation.\nConsider the peak voltage of the audio signal, which is typically higher than the RMS voltage.\nApply a safety margin, usually 1.5 to 2 times the maximum voltage, to ensure reliability.\nSelect capacitors rated for at least the calculated voltage to prevent breakdown.\nCheck the capacitor's temperature rating, as higher temperatures can reduce voltage tolerance.\nEnsure the capacitor type (e.g., film, electrolytic) is suitable for audio applications for optimal performance.\n:::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::\nSo, if an amp is rated at 1,000 watts into 8 ohms.\n1,000 watts / 8 ohms = Voltage squared\n=89.4 volts RMS\n89.4 volts x sq rt 2 = 126 volts peak\n126 volts peak x 2 (margin of error to be conservative) = 252 volt rating for the caps.\nIf you substitute 400 volt for 800 volt caps, they are still both way over-kill from most anything you will ever encounter.\nmaprik\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n253 posts\n11-03-2025 at 02:56am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThank you everyone for your information and input. This all goes with my thinking but I wanted to check with others! Love this forum!\nnubiann\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n106 posts\n11-03-2025 at 07:08am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI assume we are discussing a vacuum tube circuit\nsince these voltages are not normally present in solid state amps with the exception of some class D switch mode Power supplies which can generate 400v DC from rectified mains so caps maybe rated at 400v in the primary side or PFC stages.\nI guess some high-power class A/B amps can generate voltage swings that can get near 300v so filter caps maybe rated at 250v or often higher.\nSo, if my assumptions are correct, the answer is\nDO NOT DO IT\nFor coupling and decoupling Caps\nNEVER\ndowngrade voltage rating in fact its better to over spec min 20-30% I went for 50% over rated\nElectrolytic Caps are more commonly found in the decoupling path and these are more prone to catastrophic failure i.e. explosion.\nFilm Caps are not commonly known for explosion but Dielectric failure and short circuit could damage components around them and as they vent their contents and gas.\nTypically, a 400v electrolytic cap in a 450v circuit will likely work for a while but will be under stress its whole working life and will degrade and fail prematurely.\nI replaced my coupling caps as part of a total rebuild of my wonderful Grant Lumley ST70 vacuum tube stereo power amp, the originals were rated at 1000vdc an already good decision by the designer since the amp sees voltages in excess of 600v. I went for the highest voltage film caps I could get using the same uF. They happened to be the superb Mundorf Silver Gold Oil Film Caps rated for 1200vdc.\nIf they are filter caps then they must be rated well above the peak voltage they will experience. Within My Lumley ST70 I replaced the twin large in series 450v Filter Caps which had served the Iron well but had shrunk and were now not anywhere near their original spec but were another good choice in its design with new twin Nichicon 500v in series effectively an even bigger improvement in head room.\nAll other non-signal caps i.e. cathode bypass/bias supply etc.. were replaced with equal or larger voltage but will still be an improvement since they are Audio note Kaisei and Nichicon FG electrolytic capacitors.\nThere is one rule of thumb in tube electronics over rating voltage in capacitors is\nGOOD\nunder rating is\nnubiann\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n106 posts\n11-03-2025 at 07:17am\nCopy Comment URL\nReport Comment\nEdit\nDelete\ntoddalin\n\"If you substitute 400 volt for 800 volt caps, they are still both way over-kill from most anything you will ever encounter\".\nThat advice is valid for\nspeaker crossovers or low-voltage solid-state circuits\nI think the question maybe related to Vacuum tube Electronics\nFor tube amplifiers\n.Good practice rule \u2014\nnever downgrade voltage rating, overspec by 20\u201350%\n\u2014 is the correct approach.\naudioman58\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,646 posts\n11-03-2025 at 02:34pm\nCopy Comment URL\nReport Comment","title":"Capacitors","url":"https://forum.audiogon.com/discussions/capacitors-3"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196224-95977\nEdit\nAnodyne Filter Take 2\nThe last thread I posted I resolved myself, which was the jumper settings. From the beginning\u2026I recently purchased an Anodyne Bass Alignment Filter for my B&W 801s (circa 1980). I have it hooked up via the tape monitor of my Krell KAV-250p preamp. That\u2019s mostly because I have xlr cables going from the preamp to the amp and the Anodyne is RCA only. Anyway\u2026\nI hooked it up and started my A/B testing. I know the hookups are correct because I had my pro audio friend verify. I immediately noticed that when the filter is on (i.e. tape monitor on) the volume drops a little. This is during 2-channel listening. Ok, no big deal. It only matters when doing the A/B testing and if I have to use a higher volume number for the same noise level when the filter is in play, no problem.\nThe bigger issue came when I tried my home theater this evening. The Krell has a home theater bypass so I put it on that and started to watch a movie. I had to crank up the volume on the HT receiver to hear anything. There was virtually no audible sound at my usual volume level. When I turned the tape monitor off just to see what would happen, well, you can guess - loud beyond safe.\nMy friend suggested that in the linked photo where the red arrows are (he called them trimmer pots) I might be able to make some adjustments. He also said don\u2019t touch them without a manual.\nWhat are your thoughts on why this volume discrepancy is happening and any ideas how to fix it? Thank you.\nhttps://imgur.com/u1bxXkO\nolfac87\n10-30-2025 11:24pm\n0 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nMore to discover\nAnodyne Filter/B&amp;W 801s\nAnodyne Filter Take 2\nFocal 36 MONTH FINANCING\nVandersteen Model 2c ii signature\nVolumio Primo Plus\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Anodyne Filter Take 2","url":"https://forum.audiogon.com/discussions/anodyne-filter-take-2"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196219-20253\nEdit\nThe Science Behind Amp to Speaker Matching\nSorry everyone, I am having to do more primary source research before this article can really be up.\u00a0 Some basic things I thought were solid actually were hallucinations.\u00a0 My bad.\u00a0 \u00a0I still think it\u2019s a worthwhile topic!\nThe basics of what I'm looking into are based on how Zout changes at low volumes based on difficult speaker loads.\nerik_squires\n10-30-2025  4:28pm\n1 response\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nmike_in_nc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,250 posts\n10-30-2025 at 07:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt is disturbing, how often chatbots make things up.\nThe latest class D modules have vanishingly low output impedance. This can be seen by the lack of deviations in the Stereophile simulated-loudspeaker frequency responses. Of course, the spec sheets also show it.The connecting cables may contribute more to effective output impedance than the amplifiers themselves.\nMore to discover\nRoom Treatment? How important is it t...\nSound Absorption Behind and Between t...\nEXEMPLAR 3910 behind the digital eigh...\nSound deadening material behind painting\nTheory behind well tempered tonearm?\nAyon Audio S-10IIxs\nRSX MUSIC SERVER RSX MUSIC SERVER\nAuralic Aries G2.1\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"The Science Behind Amp to Speaker Matching","url":"https://forum.audiogon.com/discussions/the-science-behind-amp-to-speaker-matching"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196181-175568\nEdit\nStreaming Audio Repeatedly Cuts Out Briefly - Need Troubleshooting Advice\nHello. I have a Marantz Cinema 70s receiver with the following devices connected to it...a Bluesound Node streamer, 3 Outlaw 200W monoblock amplifiers that I use to power my LCR speakers, an AppleTV, a PS5 and a Blu-ray player. Until recently everything seemed to work well, however for the past couple months whenever I stream music using my phone, the audio most of the time, but not always, will cut out for a couple seconds every 20-30 seconds. I've tried with Spotify, Apple Music and Tidal going through the Bluesound Node. I've also tried streaming directly from my phone (iPhone 15 Pro) to the receiver, cutting the Bluesound out of the loop and it continues to happen. In case it was related to the phone, I tried with my wife's phone (iPhone 14 Pro) and experience the same problem. I experience no issues with the Apple TV, with the PS5 or playing Blu-rays. I have not had an opportunity to try with an Android device yet to see if it's an iOS issue. I can say though that my phone streams fine to Bluetooth headphone and via either Bluetooth or wired Carplay in our cars. I'm puzzled, because if it was related to the Bluesound Node, I wouldn't expect an issue streaming directly to the receiver. On the other hand I wouldn't think it would be a network/streaming issue since the Bluesound has Spotify Connect and the music would not be coming from my phone as such. Sorry for the long message but looking for ideas on where else I can look to troubleshoot this. Thanks.\ntimantheos\n10-27-2025  4:40am\n10 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ntksteingraber\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n803 posts\n10-27-2025 at 05:01am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAre they HiRes songs? \u00a0 Sounds like your internet service can\u2019t keep up with your soundtrack demand. \u00a0Have you checked that your internet service is performing well?\ntimantheos\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3 posts\n10-27-2025 at 05:06am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThey are, yes. However I have a 2 GB internet connection and only experience issues if I'm streaming through the receiver. No issues going to Bluetooth headphones, etc.\ndeep_333\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,544 posts\n10-27-2025 at 05:39am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAll streaming devices should be hardwired with a ethernet cable, no wifi.\nSound United devices like Marantz can be very intolerant of a wifi connection.\nHopefully, you bought the Apple TV 4k box version which came with a ethernet port.\nAny NAS should be hardwired with ethernet.\nIf issues persist after getting fully ethernet wired, update all firmware, try a different modem, etc. It is a good idea to not cheap out on the modem and router.\ntimantheos\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3 posts\n10-27-2025 at 06:58am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI don't believe it's a Marantz Wi-Fi issue, since the Bluesound Node is wired to it and that's where I initially experienced the issue. The AppleTV is wireless and works without issue, including for Apple Music. There's no NAS involved in my setup. All firmwares are current and I have Wi-Fi 6e with a 2 GB downstream connection to my provider. Additionally everything did work well for probably 2-3 months and only more recently started to have issues.\ncleeds\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,635 posts\n10-27-2025 at 12:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'd take a look at the modem. What are you using?\nhjdca\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n258 posts\n10-27-2025 at 04:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf your modem is old, I would change it.\u00a0 If not, you can add an EERO mesh system for a few hundred dollars and that should make a big difference, ie a 3 node system.\u00a0 \u00a0Put one EERO node right next to your streamer and hardwire it to the node.\u00a0 You could also use wireless to the EERO node, but, I think hardwiring it with an ethernet cable is better.\nNote:\u00a0 I had the same problem with my steaming cutting out, and I upgraded my modem and it almost fixed it...\u00a0 After that, I had rare cutouts.\u00a0 The ultimate fix for me was adding the EERO 3 node mesh system setup like I indicated above.\u00a0 No cutout problems since.\u00a0 My house still has DSL (copper), so, the EERO mesh system was a big upgrade.\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n10-27-2025 at 04:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou said you are streaming from your phone? Is that what you intended, or are you using your iPhone as a control device. You should be using your phone to control your devices... if in one case you are actually streaming and using Appleplay (is that it) then that is likely your problem. It can be a very unreliable carrier.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n10-27-2025 at 06:12pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhere do you live?\u00a0 Hi density areas may have excess number of other users competing for Blutooth or Wifi bandwidth.\ninvalid\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,390 posts\n10-27-2025 at 11:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhat bluesound node streamer do you have? I have a node 2 and I have this problem every now and then, I usually have to uninstall the bluesound app and reinstall it.\ndantaudio\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6 posts\n10-28-2025 at 03:41am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHave you tried an ethernet connection to compare results?\nLikely a wifi issue.\u00a0 Are you using 5ghz or 2.4ghz?\u00a0 Longer distances/objects/corners benefit from 2.4.\u00a0 I had the same issue with a wifi streamer and switching to 2.4 resolved that issue.\nMore to discover\nStreaming Sonos - Best H/T Receiver\nLiner notes in a streaming age\nVideo Streaming\u2014CBS, etc\nOpinion: of the Hi-Res streaming serv...\nDigitally recorded vinyl vs streaming\nAuralic Aries G2.1\nAyon Audio S-10IIxs\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Streaming Audio Repeatedly Cuts Out Briefly - Need Troubleshooting Advice","url":"https://forum.audiogon.com/discussions/streaming-audio-repeatedly-cuts-out-briefly-need-troubleshooting-advi"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196151-137065\nEdit\nAre you using chatgbt?\nI am working on a novel and use chatgbt frequently for pulling together research. It's not a great writer, but it is a wiz at research. When I listen to music, a ton of questions go through my mind and I am finding that chatgbt is amazing at the most detailed questions. Here is an example of the research chatgbt retrieved in about three seconds:\nMy question--In Diana Krall's album \"Love Sceenes\" is she backed up by a guitar with nylon or steel strings\nChatGPT said:\nOn Love Scenes (1997) by Diana Krall, the guitarist is Russell Malone.\nen.wikipedia.org+2allmusic.com+2\nAccording to gear info, Russell Malone uses steel-strings (specifically D\u2019Addario XL Jazz Medium nickel-wound electric strings, 13-56).\nequipboard.com+1\nSo yes \u2014 he is backed by a guitar with\nsteel strings\n, not nylon.\nMy next question: when I stream the album over Tidal the guitar sounds soft as if it had nylong strings. Is that just digital distortion?\nChatGPT said:\nThat\u2019s a really perceptive observation {it flatters a lot} \u2014 and no, it\u2019s probably\nnot digital distortion\nWhat you\u2019re hearing is more likely a combination of\nrecording technique\nplaying style\n, and\nmix choices\n, rather than a misrepresentation of the instrument.\nHere\u2019s why the guitar sounds \u201cnylon-like\u201d on\nLove Scenes\n\ud83c\udfb8 1. Russell Malone\u2019s playing style\nMalone has an exceptionally smooth,\nfat-toned\ntouch.\nHe often plays\nhollow-body archtop jazz guitars\n(like a Gibson ES-175 or Benedetto), strung with\nflatwound steel strings\n. Flatwounds are steel strings, but they\u2019re wound differently \u2014 producing a\nwarm, mellow sound with reduced brightness and no finger squeak\n, much closer in tone to a nylon-string guitar.\n\ud83c\udf9a\ufe0f 2. Recording and mixing choices\nLove Scenes\nwas engineered for intimacy \u2014 Diana Krall, Christian McBride (bass), and Russell Malone were recorded very close-mic\u2019d, with minimal room ambience.\nThe engineers (Al Schmitt, known for his lush, warm sound) likely\nrolled off some treble\non the guitar to keep the mix velvety and let Krall\u2019s voice dominate. That EQ curve softens the attack even more.\n\ud83d\udcbf 3. Streaming compression and mastering\nTidal\u2019s \u201cHiFi\u201d or \u201cMaster\u201d versions can still differ from the original CD in micro-dynamics and high-frequency air.\nStreaming codecs sometimes smooth over transient detail \u2014 that subtle steel \u201cping\u201d that differentiates metal strings from nylon \u2014 so what remains sounds more rounded.\n\ud83e\udde9 In short\nYes:\nit\u2019s a steel-string archtop.\nthe softness isn\u2019t digital distortion.\nIt sounds that way\nbecause of Malone\u2019s flatwounds, touch, and Al Schmitt\u2019s velvety jazz-club mix.\naudio-b-dog\n10-24-2025  2:52am\n9 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n10-24-2025 at 04:35pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe problem with this is that ChatGPT can\u2019t actually hear music, at all.\u00a0 It may consolidate the writing of many other posters which may be accurate, or not, and may certainly not give credit where due.\nSome of that ChatGPT writing you\u2019ve quoted was probably lifted from others.\nAlso, and this varies but I've been in more than one situation where an AI gave me some good research and some terrible research, and unless you trace down each source, there's no one but you to blame for pushing out bs.\u00a0 More than one lawyer has been sanctioned for mischaracterizing past court law or inventing it thanks to AI.\naudio-b-dog\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n911 posts\n10-24-2025 at 05:43pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@eric_squires\nEverything you've said is true. My questions are more historical. For example, I am getting interested in CPE Bach who wrote a manual on playing the keyboard. I found pieces of his that were written for the harpsicord and I wondered if he'd written for the piano. So, I got a bit of a history lesson on how the piano was invented during his lifetime. His later work was for the piano.\nI have been using chatgbt with such complex questions that I can't take anywhere else for my novel, that I appreciate any input. Since I'm writing about prehistory, a lot of what anyone writes is guess work. If i don't like my friend chatgbt's answers, I drill down on them. I'm not worried about getting led astray. I've done my primary research and will know if chatgbt is bending the truth.\nIn music, I think it's good for passing questions the veracity of which is not crucial. I use it more and more every day. I've even learned that it has an ego of sorts and insists on suggestions that I haven't taken. That makes me smile. And then, of course, it begins by flattering your insight for asking such an intelligent question. It's not dangerous unless you buy totally into it. For a novelist, it's great. I have a fantasy scene of a woman riding a seahorse and it has given me all the proportions the seahorse would need to be.\nlarsman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,218 posts\n10-24-2025 at 05:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGoogle's Gemini AI app is worth looking into as well.\nemergingsoul\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,582 posts\n10-24-2025 at 05:54pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nChatgpt is an addiction. It will steal your soul.\nIt will take you down a rabbit hole that you cannot escape from. It's just like taking an interest in audio gear. The tunnel never ends.\nYou're basically having a conversation with a computer chip in the middle of a Nebraska warehouse filled with servers.\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n10-24-2025 at 06:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI use ChatGPT extensively. I, like you are writing a book. Mine is not fiction. I use it for research... but also to help organize and flesh out thoughts. I use Scrivner 3 for writing. It allows me to record bits... short thoughts randomly. Then I go back and flesh them out.\nSo instead of taking the many days to organize the thoughts and flesh them out, instead I ran them through ChatGPT. It grouped like thoughts, organized in a logical fashion, created chapters and rewrote sentence fragments into complete sentence and paragraphs.\nIt spit out something with my thoughts in a competed book format. So, from there, I put it back into Scrivner and can get to work filling in more ideas within the structure.\nI also did some diagrams on my iPad of frequency distributions and how beliefs can be categorized as truths or simply foundationless with no relationship to the real world. It was a fairly complex diagram. I fed it into ChatGPT and asked for a textbook ready color diagram... and it came up with a beautiful rendition that might have come from a textbook. But for some reason keeps spelling Ancient Greece... Ancient Grease.\nThe value add is simply incredible.\nI use it to assess audio components sound characteristics, but not so much on music.\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n10-24-2025 at 06:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI will have conversations like this, discussing historical perspectives,\nHere\u2019s a structured overview of how\nnew communication technologies\nhave historically di","title":"Are you using chatgbt?","url":"https://forum.audiogon.com/discussions/are-you-using-chatgbt"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196141-95977\nEdit\nAnodyne Filter/B&W 801s\nI recently picked up an Anodyne Bass Alignment Filter for my B&W 801s (circa 1987). The seller kindly noted that it was configured for 802s. I\u2019ve been striking out on the interweb trying to find the right jumper settings for my 801s. Ironically I came across\nthis thread\nwhich was someone trying to go from 801 to 802 - just my luck. Any advice?\nolfac87\n10-22-2025  9:38pm\n1 response\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nolfac87\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n28 posts\n10-23-2025 at 01:45am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI found the answer so I will \"close\" my own post. Until next time.\nMore to discover\nMarantz SA-7S1 filters and noise shaper\nReview: ISO 1100va AC filter\nRumble Filter for my Linn LP-12 setup ??\nReview: Shunyata Hydra 2 AC filter\nReview: Running Springs Audio Haley A...\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10IIxs\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Anodyne Filter/B&amp;amp;W 801s","url":"https://forum.audiogon.com/discussions/anodyne-filter-b-w-801s"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196099-97327\nEdit\nContact cleaner for a noisy gain knob\nA little old school maintenance question.\nI have an original Jolida Glass FX Tube DAC that I don\u2019t use very much only because the main stereo is in the living room and the TV is in the same room. My the is it a serious music fan so I have another system in my home office that gets more use. The Jolida DAC is fed source material from a Cambridge Audio CXC V2 CD Transport (no internal DAC) and that\u2019s the only unit connected to it. I turned it on for the first time in months and when I adjusted the gain on the front park, there was scratching noise that indicates dirty contacts.\nAnybody have suggestions for a reliable contact cleaner that\u2019s safe for audio equipment?\nusatran\n10-18-2025 11:46pm\n6 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nfaustuss\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n973 posts\n10-19-2025 at 08:50am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGently turn the knob back and forth several times over the extent of it's range which should clean up the oxidation on the contacts and wiper from non-use for several months. Pots due that.\nzlone\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,431 posts\n10-19-2025 at 12:13pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have had good luck with DeOxit. It put my decades old Nakamichi integrated back into working order.\noddiofyl\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,644 posts\n10-19-2025 at 12:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCRC makes a plastic safe electronic cleaner that works well.\u00a0 \u00a0Many potentiometer use plastic.\u00a0 \u00a0DeOxit F5 is probably the best for most ALPs type pots.\nusatran\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n14 posts\n10-19-2025 at 10:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThank you all for the insights and recommendations.\nI spent many years as an Electronics Technician in the USN aboard submarines back in the mid-1970s. Exercising potentiometers wasn\u2019t always a great idea given the environment I was working in, and my Hi-Fi interests started in the mid-1960s building Heathkit and Eico amps and signal generators. I asked about the contact cleaners to get some updated information more inline with items available in 2025.\nAgain, thank you for the responses and stay happy - listen to a lot of great music on the best stereo you can get. It will help to keep you sane during these insane times.\nfaustuss\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n973 posts\n10-20-2025 at 06:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI spent many years as an Electronics Technician in the USN aboard submarines back in the mid-1970s. Exercising potentiometers wasn\u2019t always a great idea given the environment I was working in, and my Hi-Fi interests started in the mid-1960s building Heathkit and Eico amps and signal generators. I asked about the contact cleaners to get some updated information more in line with items available in 2025.\n@usatran\nHmm, then why are you asking if you are already so knowledgeable on the subject? The internet is overrun with legitimate and pure snake oil alternatives that someone like you could sift through it all without bothering with a hobbyist forum like Audiogon.\nusatran\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n14 posts\n10-21-2025 at 12:06am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@faustuss\nRefer to the last sentence in my reply.\nMore to discover\nHovland HP-100 Preamp - Anybody Have ...\nSota Reflex Clamp Loses Contact with ...\nContact Enhancer Deterioration\nWhy not use a non-contact stylus on a...\nElectra Glide Contact Information?\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAuralic Aries G2.1\nAntipodes Audio K40\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Contact cleaner for a noisy gain knob","url":"https://forum.audiogon.com/discussions/contact-cleaner-for-a-noisy-gain-knob"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195878-208513\nEdit\nThe Perfect 12AX7\nWhat is the prefect 12AX7? There are no perfect 12AX7s as tastes vary. It depends upon who is listening to the tube and to a degree the amp itself and the music itself. Some like distortion. Different 12AX7s vary in distortion and some are pleasing to the listener. An example of an amp liking a certain tube and being used on rock and roll is the upgraded Fisher 500B. Using K40Y-9 coupling caps that transforms the Fisher itself into a far superior sounding amp. Using cheap Chinese 12AX7s produces the most pleasing sound. Not perfect nor good on jazz or classical music it is extremely pleasing on rock and roll. But a close to perfect 12AX7 that is very low distortion and sounds great on all music exists IMO. My favorite tube was the Mullard 12AX7 long plate. Low distortion and accurate music reproduction. Also expensive at $200 each in NOS. I rarely buy used tubes. I got some JJ E83CC and was amazed how good the tube performed. It is a frame grid tube and only frame grid 12AX7 ever made. Frame grid is used on the tube input grid and is wound as perfectly spaced as possible. Frame grid tubes were last to appear in some types. The JJ sounds just like the Mullard long plate. The difference is it projects the sound into the room to the point the speakers disappear unlike the somewhat recessed sounding Mullard long plate. Like previously mentioned not everyone will like this tube as some audiophiles like distortion. The JJ E83CC was made about 15 years ago for only a few years. Stocks are getting low thus buy now. The best part is the tube costs only $29.\njimbennet\n09-22-2025  5:34am\n35 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nlarryi\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,674 posts\n09-22-2025 at 03:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have no idea what is the best 12AX7 for any particular use, much less whether it can be considered \"perfect.\"\u00a0 Even if my own personal taste sets the standard, I don't think I could pick a tube that is best for all types of music.\u00a0 In my Viva Fono phono stage, I chose Telefunken 803S tubes (yes, the real deal vintage tube) but it is, as is the case with everything, a compromise that gives me an overall sound that I like with the majority or records I play.\u00a0 It is a leaner sounding tube than others, but I like its liveliness and great dynamic contrasts.\u00a0 I don't expect it to be a favorite of other listeners even if they heard in in my system.\nBy the way, it is a frame grid tube.\nawise1961\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n157 posts\n09-22-2025 at 05:57pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have no taste or want for new production 12AX7 tubes. My favorite 12AX7's are vintage Telefunken (smooth or ribbed plate), Amperex Bugle Boys, and early to mid 70's EI. EI's are basically Telefunkens as they purchased tooling when Telefunken went bankrupt. I was told that EI even hired Telefunken engineers and technicians, I have a large enough stash of those three brands to last me the rest of my life.\njimbennet\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n199 posts\n09-22-2025 at 06:22pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe JJ will outperform your 12AX7 as I heard your tubes. Your tubes make too high distortion, but as I said some like distortion as in your case. Also, I had no idea Telefunken made a frame grid 12AX7 with a different number.\nadsell\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n92 posts\n09-22-2025 at 06:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIn my experience, the Cifte Mazda 12AX7 tubes brought the best sound to my system, particularly in the phono stage (if I recall correctly). Back then, they were about $100 a pair\u2014now the price has gone up significantly.\nbuellrider97\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,066 posts\n09-22-2025 at 11:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019m curious, how do you measure this level of distortion between various brands of tubes ? Are you using a signal generator and an oscilloscope ? What speakers are you using ? Do you think it varies by how resolving a system is ? I recently picked up a pair of mono blocks that utilize the 12AX7 as the phase tube. I have a great deal of experience with 12AU7\u2019s and 6922\u2019s, but I\u2019m starting to roll the 12AX7 and the new production tube I do like is the Tung Sol 5751 gold pin. My experience with JJ is limited to the 12AU7\u2019s standard and gold pin and I don\u2019t care for either. Also I\u2019m not a nos Mullard fan as I have some. To me it\u2019s like throwing a blanket over my system. I think we all have our tastes and pursue what we like in our systems. FWIT I recently purchased a trace matched pair of nos Telefunken smooth plate 12AX7\u2019s from Brent Jesse for $318 and didn\u2019t care for them. As a total Tekefunken fan boy in the 12AU7 and 6922 category I was disappointed that it didn\u2019t carry over to the 12AX7 and will probably acquire numerous brands to experiment with. Cheers , Mike B.\nlarryi\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,674 posts\n09-23-2025 at 12:10am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe right tube is very specific to the particular gear and one\u2019s taste. \u00a0I don\u2019t see how one could know the JJ\u2019s are better than Telefunken\u2019s, EI\u2019s and Bugle Boys even if you heard them. \u00a0I personally did not particularly like JJ\u2019s I heard in a couple of phono stages, but, I am sure someone else might like them; that is how it goes.\nknotscott\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,430 posts\n09-23-2025 at 12:30am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAs long as the tubes are used in different circuits that each apply different electrical values and have different sound signatures, the best tube will be a variable.\u00a0 Add a dose of personal preference and different synergies from different systems, and it's not so different than picking the perfect color, perfect beer, or perfect woman.\njimbennet\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n199 posts\n09-23-2025 at 12:54am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy ears hear the distortion. Is there any other way?\nwhart\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,406 posts\n09-23-2025 at 04:54am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI think tube rolling is circuit and system dependent. I like to use an older ribbed Tele 12AX7 in my Lamm ML2s- they have a little more grit than the smooth plate. I was able to source true NIB/NOS several years ago and recently retubed, but kept the \"used\" Teles since I think they still have life. Maybe if I have time, I'll compare them to the fresh set I recently installed. Different voicing may dictate a different tube, depending on the aforementioned factors as well as user preference. I know of no \"perfect\" tube- they all have a character- that's why we \"roll\" them.\nfthompson251\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n775 posts\n09-23-2025 at 11:38am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI always landed on Telefunken smooth or ribbed plate 12AX7's.\nhjdca\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n258 posts\n09-23-2025 at 05:43pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@jimbennet\nOk, right now, I am using mat","title":"The Perfect 12AX7","url":"https://forum.audiogon.com/discussions/the-perfect-12ax7"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196057-4358\nEdit\nCloud storage for 8TB of music files on an external HD\nI signed up with Backblaze to securely back up the files on my external hard drive. \u00a0It looks weeks to back up \"music files\", but as it turns out, the only music files downloaded were from my Mac mini, nothing on my HD. \u00a0Their customer service is pathetic, but I do see now that the basic BB service\nexcludes\nexternal drives, which surprises me. Their website indicates that external drives can be backed up for $6 per TB per month which will cost me nearly $600 per year. \u00a0I can get a reliable SSD for a somewhat similar price so why would I pay $48 a month forever when I can back it up reliably myself? \u00a0Any thoughts would be most appreciated.\nwhitestix\n10-14-2025 12:06am\n21 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n10-14-2025 at 12:36am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWe are exactly in the center of a bunch of changing technologies. First would \u00a0I would not spend $48/month for backup.\nI was in IT most of my career. So, at home I have a main computer with 14TB, but have moved to an all Apple architecture, so I have an 8TB solid state drive attached to my MAC... two 48TB network attached storage. A cloud account with Microsoft which I keep my working data files, a couple tb.\nAnyway, for long term \u00a0storage solid state drives are not stable. So for archiving use real disc drives. I would back your stuff up to a couple attachable drives. You can get 8tb drives for a song and a dance. Then put them on the shelf.\nGet a subscription to Qobuz for $12 / month and you will have access virtually every album you own and a million more. There just isn\u2019t a reason to own files any more. Streaming sounds just as good as stored files. I have 2,000 stored albums and 2,000 vinyl albums which I don\u2019t use any more because streaming sounds as \u00a0good or often better as they are higher resolution.\nTime to move on from owning music files. It\u2019s a lot of hassle and not worth the time or effort. Mostly I keep all the storage for duplicate backups of my 130,000 high resolution photos. Redundancy is the key to keeping data. But cloud storage of data is the way to go for your own stuff... I have 100gb One Note database with everything from hundreds of papers on Astronomy, Geology... etc to my car titles and manuals for everything I bought and wrote about in the last twenty years. But that is just working data. I keep backups of them... well, I just don't trust anyone. I have run big data centers and accidents happen.\nwhitestix\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n765 posts\n10-14-2025 at 01:29am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSir,\nYou clearly know a lot about this issue so thanks for you for responding. \u00a0I have my music on an 8 TB HDD, not a solid state device as something is spinning around inside, all of which in my experience are prone to failure. \u00a0You mention that SSD's are not suitable for long term storage which is curious to me as inherently they ought to be more stable than \"regular\" spinny HD's.\nI take your point about streaming music service and have been a long time Tidal Hifi users, but I have 5.5 TB of SACD jazz files which cost a fortune which I want to keep access to and back up securely. \u00a0I can get a well reviewed 8TB SSD for about the same cost as Backblaze cost of their annual cloud storage cost so that seems the proper route to take.\nkennyc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,146 posts\n10-14-2025 at 02:04am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@whitestix\n- thanks for starting this thread\n@ghdprentice\n- thanks for your input. \u00a0I\u2019m transitioning from CDs to streaming, and was wondering if I should burn my CD collection or just skip as I plan to subscribe to Qobuz and maybe Tidal. \u00a0Also, I was confused on best method to backup files. \u00a0Your IT background speaks volumes - thanks for sharing your expertise.\nI\u2019m a PC user, is there some advantage moving to Apple?\nrcm1203\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n124 posts\n10-14-2025 at 11:59am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFor myself, don't store ANYTHING personal and important to me on a cloud service. They can be hacked just like everything else on the net, so I don't trust them. All my music is backed up on both both disc and SS external drives along with my Sony HAPZ1ES and a 2TB drive in my Eversolo DMPA8. Here's the rub; as ghdprentice mentioned, now a days, I do the majority of my listening on Qobuz, Amazon Music, and the Sirius XM app on my streamers. I haven't used my actual music server for several months now, and I've lately started to wonder if I even need it anymore. Besides those considerations, I'm 74. Although my health is excellent,\u00a0 my need for any of the things I own and treasure is predicated on how much longer I'll be around. None of my heirs will have any use for any of it.\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n10-14-2025 at 01:34pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nRemote and Portable Data is so compact and affordable, and USB 3.0 is very fast.\nI keep only Operating System and Programs on the internal start up drive. All data is on a portable drive, USB 3.0 is so fast you think it\u2019s an internal drive. And, after the large initial backup, incremental updates are quick.\nI have two identical external hard drives, one connected USB 3.0 to my Desktop Computer for all data, and I keep the second backup one in the trunk of my car which I park in my inactive residential street at the end of the driveway.\nWeekly backup of new/modified files.\nIf there is a house fire, hopefully they will put it out before my car is destroyed.\nI really should keep backup copies of my software somewhere safe.\nWhen I was running my business from home, more critical client files, and external drives were neither afordable or compact, and SCSI chains were involved, I kept my backup drive inside my neighbor\u2019s home across the street, and I kept her backup here. We reminded each other to backup weekly.\nIt\u2019s not if a drive will die, it;s when, but both won\u2019t die at the same time.\nAnother advantage, I can take my primary portable drive with my laptop, and have the latest files anywhere anytime, and do the backup anywhere anytime, just don't risk keeping them both in the same place often.\nmswale\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n389 posts\n10-14-2025 at 03:41pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNo idea why people want to use Cloud Backups for personal data. Get a RAID device, put your data on another drive, basically have it in more then one spot. Unless the drive is physically destroyed, it can be recovered, even when destroyed they can sometimes work wonders.\nAs you have noticed cloud backup is slow! As well everything might not be there. Then you have to remember to upload anything new you add.\nStripe 2 drive, get a RAID, have a backup disk of your disk, you will be fine.\nTotal HDD failures are rare, usually you start to loose block, and the drive will self repair, over time it will tell you it needs to be replaced.\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 p","title":"Cloud storage for 8TB of music files on an external HD","url":"https://forum.audiogon.com/discussions/cloud-storage-for-8tb-of-music-files-on-an-external-hd"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196114-208513\nEdit\nReplace OPA275 & LF353 op anp with Muses 02\nWill Muses 02 replace the op amps in title?\njimbennet\n10-19-2025  8:04pm\n0 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nMore to discover\nReplace OPA275 &amp; LF353 op anp wit...\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nVolumio Primo Plus\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Replace OPA275 &amp;amp; LF353 op anp with Muses 02","url":"https://forum.audiogon.com/discussions/replace-opa275-lf353-op-anp-with-muses-02"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192193-192192\nEdit\nJapanese Voltage.\nI was on the verge of buying a Japanese Luxman 509Z, on ebay. It it 100Volts, Here in the U.K. we have 240Volts. And the price difference is \u00a39,000 (here) to \u00a35,000 (there). I immediately went on line for a decent transformer (\u00a3130) and ordered it. We here, have an audio disscusion group, so I tested the water with them. The general advice was discouraging. \"It will introduce noise etc\". What is the opinion of yourselves? I'm not in a hurry, I decided to buy an SACD player instead. \u00a34,000 (here!)\nThanks, An avid reader,\nIAN.\nirjones\n12-03-2024  1:32am\n15 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nPost removed\nDec 03, 2024\njasonbourne71\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,904 posts\n12-03-2024 at 04:11am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThere will be no problem using a step down transformer. No noise will be introduced into your system.\nPost removed\nDec 03, 2024\nirjones\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n84 posts\n12-03-2024 at 05:37am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHi, the transformer is an \"AIRLINK transformer\" And its 500VA.\nirjones\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n84 posts\n12-03-2024 at 06:38am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI found it, the transformer is\u00a0 50/60 Hz.But cannot find Luxman's frequency.\nPost removed\nDec 03, 2024\nPost removed\nDec 03, 2024\nirjones\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n84 posts\n12-04-2024 at 06:39am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThank you gentlemen, No-one posted a down side. So I concur with you, it's a reasonable motion. But I'm afraid the deal will have to wait until this time next year. as I decided to buy an SACD. And now it's final.\nIndecisive, IAN.\nyoyoyaya\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,087 posts\n12-04-2024 at 10:15am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTransformers aren't just generic black boxes so there are potential downsides to using them as voltage changers. And it's not just a question of the VA rating.\nkennyc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,146 posts\n12-18-2024 at 02:23am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@irjones\n- it does introduce noise, but whether relevant it depends on how transparency of your audio chain. \u00a0In high-end audio, better components often drops the noise floor so additional may or not be acceptable.\nslaw\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n26,979 posts\n12-21-2024 at 04:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'm using an Esoteric K-05x built for Japan voltage. Using a TGK step up also made in Japan. No noise issues.\nirjones\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n84 posts\n12-25-2024 at 07:45am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nO.K. I ended up, purchasing an Airlink transformer, even though I don't yet need it.\nIt is the JACBS 1000, At the fair price of \u00a3400, delivered. Now, as it has two outputs, I started looking at a pair of mono blocks!\u00a0 As I have time to accumalate the funds, over a year or so. So I have have plenty of time to be indecisive!\nSo now what I wish to know is; will the 100V amps be compatible with a 240V pre-amp? or is the best route to buy a 100V pre-amp? Honest, it's not just conjecture, I really need new amplification. And I'm pretty stupid. \u00a310.000 is a lot of money for me, I cannot get it wrong.\nThanks for reading this, I need help.\nNo rush,\nIAN.\ncdhumiston\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n46 posts\n10-18-2025 at 04:16am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI just bought a Japanese Luxman L-509Z for use here in the USA. The transformer introduces absolutely NO noise into the system. I don't know where that rumor started but it's not true.\nirjones\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n84 posts\n10-18-2025 at 12:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHi, cdhumiston. How I envy you, whilst saving for my L-509Z, I started throwing money away at SACD's 10 of wich I already had on CD. And a few I really don't like. I am going down the 100V route. I planned to buy after Xmas, but it is'nt going to happen.\nThanks for your kind posting, It boosted my confidence greatly.\nYour new friend\nIAN.\nnwres\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n287 posts\n10-19-2025 at 02:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have had success with using voltage transformers for Japan voltage amps. Also no noise introduced. I have always used transformers that have at least 3 times the continuous output compared to the max wattage consumption of the amp. Perhaps not required, but my personal choice. So for the L-509Z at 390W, I would look for a transformer that can handle a continuous output at least 1200W. Good luck in your pursuit.\nMore to discover\nAccuphase E-480 convert voltage from ...\nAC 101 : Voltage Question\nBias current and plate voltage for Ai...\nGarrard 301 &amp; Thorens TD 124 voltage\nWhole house voltage regulation\nAurender N10\nRSX MUSIC SERVER RSX MUSIC SERVER\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Japanese Voltage.","url":"https://forum.audiogon.com/discussions/japanese-voltage"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n196042-2135\nEdit\n\u201cThe Secret to Wonderful Sound\u201d\nI just came across this YouTube video by the hifi reviewer who posts under \u201cPassion for Sound\u201d. \u00a0It essentially describes how we hear things, what factors can affect how we hear things, and perhaps most interestingly for this forum, based on what and how we hear, how audio gear that measures identically in bench tests can sound very different to the listener.\nhttps://youtu.be/03ggUm1kjuQ?si=KK6IvuPXwL-SAqZZ\nInterested in your thoughts. \u00a0If this video has already been discussed here, my apologies. \u00a0I did a quick search and couldn\u2019t find a reference to it on Agon forum.\nknownothing\n10-11-2025 10:57pm\n19 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\n1bitsoul\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n34 posts\n10-12-2025 at 12:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThoughts... The magic of sound often lies beyond what can be measured. I\u2019ve found that technical perfection doesn\u2019t always translate to emotional engagement. Some gear with slightly imperfect measurements can sound more natural or musically involving, while ultra-clean equipment can sometimes feel sterile.\nThe human ear and brain respond to timing, texture, and spatial cues in ways that simple graphs cannot express. Our listening spaces, moods, and expectations all shape what we hear. For me, the real art of audio lies in finding equipment that connects you to the music, not just impresses with numbers. Measurements provide a foundation, but the final judgement always happens in the listening chair.\njasonbourne71\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,904 posts\n10-12-2025 at 07:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe shiny new toy always gives greater joy than the old battered toy.\nbillstevenson\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,319 posts\n10-12-2025 at 09:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI had my wife, professor of human anatomy and physiology, watch the video with me.\u00a0 She opined that he did a very good job of explaining how we hear.\u00a0 She could not comment on the numbers he cited, but I think they are secondary.\u00a0 It is axiomatic that measurements can only take us so far.\u00a0 I think his comments on timing are particularly interesting.\u00a0 I have been using AnalogMagik to set up turntables for the past few months.\u00a0 I have found it to be an extremely effective tool.\u00a0 I have even used the word profound to describe the efficacy of the achievable results possible using it.\u00a0 Yet at the same time I have been frustrated to discover the limitations of this extraordinary tool.\u00a0 It measures distortion.\u00a0 Doing so is useful, but it has it's limitations.\u00a0 At the end of the day we must use our ears as the final arbiter for what sounds best.\nincorrigable\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n219 posts\n10-13-2025 at 04:22am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWe must accept that live sound amplified or not is distinct from the sound of your home system. Or the canned music bands play on the system before they come out. Or a live symphony.\nearthbound\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n314 posts\n10-13-2025 at 01:05pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThat was truly excellent. I don\u2019t think the guys at ASR are going to like it. Lol\nmark200mph\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n909 posts\n10-13-2025 at 01:29pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThis is a great review of the anatomy and phys of the ear.we still have much to learn as the brain is the last frontier in medicine.it is much like taste as people taste the same food differently as one may like the taste of that food item and the other may not like the same item. This is also true of hearing. I have operated on the ear under the microscope for 40 years and the human body amazes me.we put titanium implants in the hammer anvil and stapies. Cochlear implants,take tumors off the hearing nerve,drill out the bone behind the ear when bad infections happen.the ear ,eye and receptors are all involved in balance with input to the brain. Enjoy the music and the search.stay healthy\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n10-13-2025 at 01:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI just used this studies by Milind Kunchur and many others articles against Amir of ASR in a thread that was deleted ...\nAmir conflated\u00a0 specs with S.Q.\u00a0 and Kunchur\u00a0 wrote about ASR an article \"pseudo-science\" in audio\u00a0 as a disinformation site about audio by misunderstanding of acoustics and Kunchur explained why Amir act more as a \"guru\" than a scientist by ignorance of acoustics..,.\nhttps://sites.google.com/view/kunchur/audio-acoustics\nI am flabbergasted by the fact that there is so many\u00a0 intelligent people unable to read scientific articles and able to think by themselves...\nVerification of measured design specs are good and necessary...\nBut\u00a0 their interpretation as the main and only S.Q. proof or measure is \"ideology\" and ignorance about human hearing...\nThe source article of this video\u00a0 is also at this adress above...\nearthbound\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n314 posts\n10-13-2025 at 02:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nearthbound\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n314 posts\n10-13-2025 at 02:38pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMe going to ASR is like driving past a car accident. So hard not to look at the horror show!\nearthbound\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n314 posts\n10-13-2025 at 03:33pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAnother interesting, informative take on sound, hearing and math.\nhttps://www.youtube.com/watch?v=1ij_xKi39PY\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n10-13-2025 at 04:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks very much..\nI did not know this one and it seems interesting..\nMy best to you ...\nAnother interesting, informative take on sound, hearing and math.\nhttps://www.youtube.com/watch?v=1ij_xKi39PY\njoeycastillo\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n277 posts\n10-13-2025 at 05:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nASR is more about science than of music. I used to subscribe to Their Philosophies and in the end, completely abandon then. Example, they placed the Benchmark AHB2 as the near top of the list amps because of low distortion. I owned this amp, but i have always wondered the opposite side of the coin, the Pass labs, which has always had higher levels of good distortion\nafter comparing them side by side with same speakers and different speakers, I came to conclude that the pass has given me wonderful sound. Don't get me wrongs, the AHB2 is a killer amp, amplifies and reproduced music to a very high level of precision, but all this is in the ears of the listener\nIN the end, it is what the Listener hears as emotionally involving music and not what is better or not so good sounding gear\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n10-13-2025 at 06:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nASR is more about science than of music.\nASR is about Amir creating his audio ideolog","title":"\u201cThe Secret to Wonderful Sound\u201d","url":"https://forum.audiogon.com/discussions/the-secret-to-wonderful-sound"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195964-2047\nEdit\nBuzzing sound emanating from my speakers when receiver is set to 'phono'\nAnyone have an idea as to what's happening?\nklimt\n10-02-2025  7:28pm\n17 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nklimt\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n317 posts\n10-02-2025 at 07:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nRig sounds fine when table is set to video dad and cable is attached to tape 1.\nrick_n\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n491 posts\n10-02-2025 at 08:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSounds like a ground loop.\u00a0 If that's the case, two possible solutions\u00a0 1-be sure the\u00a0 phono input is properly grounded 2-if you are using an outboard phono preamp try a plug lifter (regular adapter that takes an input with a ground and outputs just two blades with no ground)\u00a0 Good luck.\nklimt\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n317 posts\n10-02-2025 at 08:36pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks rick!!!\nAnyone else have suggestions?\njasonbourne71\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,904 posts\n10-02-2025 at 08:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMake sure there is a ground wire from the turntable to the receiver chassis.\nlanx0003\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,051 posts\n10-03-2025 at 12:34am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMake sure there is a ground wire from the turntable to the receiver chassis.\nIf you have an external phono preamp, you should definitely run a ground wire from the turntable to the preamp. The phono preamp should already be grounded to the amplifier through the interconnect cables. However, if the hum is still present, try running a second ground wire from the phono preamp chassis to the power amplifier or receiver chassis to possibly eliminate it.\nmotown-l\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n384 posts\n10-03-2025 at 11:05am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCheck your interconnects, too. I have had problems with older interconnects having been over strained and start to have shorts and ground hum.\notimmons\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n11 posts\n10-03-2025 at 12:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nJim Hagerman, who makes phono preamps, has this article on eliminating noise in vinyl playback systems:\nhttps://www.hagtech.com/pdf/eliminatingnoise.pdf\nretiredaudioguy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n347 posts\n10-03-2025 at 12:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy system developed this issue a few weeks ago after moving cables around and the power cable for the amp became close to the phono interconnect, and parallel to it for a few inches.\nI rerouted the phono interconnect & amp power cable to fix the problem.\u00a0 The phono stage is multiplying the signal by a factor of something like 1,000 so it does not take much electromagnetic interference to do nasties.\nI once hooked up a turntable with\u00a0 an unshielded PBJ and got the local AM station!\u00a0 That was also a sign of a dirty contact acting like a crystal detector.\u00a0Google\ncan dirty electronic contacts act like an AM detector\nAmusing (off topic) story, In the early '60s I'd been building a crystal set with my much younger brother when we lived in Worcester (UK), about 10 miles from the BBC Droitwich transmission station.\u00a0 This is a 500kW transmitter at 200kHz.\u00a0 Somehow the headphone leads were touching the gas stove that we were working next to, in came the BBC Light Program (now BBC 4).\u00a0 There was even a design for a transistor radio that used the signal from that transmitter as its power source in some radio hobbyist magazine that I read as a young teenager (1950s).\njsalerno277\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n533 posts\n10-03-2025 at 03:14pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have posted this root cause analysis protocol in other posts regarding buzzing or humming and distortion. \u00a0If you follow the protocol, you should find the issue. \u00a0I have further explained reasons. \u00a0I have listed then in my opinion of the order of priority\nGround loop: \u00a0Are there multiple ground current paths (equipment plugged into different outlets?\u00a0 Is the turntable and phono preamp grounded properly or has the existing ground wire become faulty? Connect equipment to different outlets, check ground of turntable and phono preamp.\nElectromagnetic interference: \u00a0Equipment and connections generate EMI that can enter sensitive phono sections. \u00a0Have you recently moved equipment or cable paths \u2026 or added a new piece of equipment? Relocate equipment or reroute connections. \u00a0Faulty interconnect or cable shielding can permit EMI to enter system. \u00a0Check all wires for damage. \u00a0Have you purchased a new appliance that is on the same line? \u00a0Unplug the appliance to see if the problem resolves.\njsalerno277\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n533 posts\n10-03-2025 at 03:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSorry, hit send by accident.\n3: \u00a0Insufficient contact at connections. \u00a0Clean all contacts. \u00a0Check for improper contact os connector damage.\n4: \u00a0Preamp ware or damage. \u00a0Bad capacitors, tubes, oxidized tube contacts are all potential causes. \u00a0DC leakage usually causes popping rather than buzzing, but have the unit checked. \u00a0 A broken internal wire or poor internal connection can cause the buzzing. \u00a0An aging or damaged cartridge can cause the problem.\nHope the protocol gives you some ideas on how to investigate root cause. \u00a0Good luck.\nsamssa\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23 posts\n10-03-2025 at 08:43pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhat turntable, cartridge and ohono preamp are you using. This may shed a little more light on the problem.\nklimt\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n317 posts\n10-03-2025 at 09:10pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks again guys!\n:thumbsup:\nklimt\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n317 posts\n10-03-2025 at 09:13pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy table is a Techincs 1500\nAnd the receiver is a Denon dra-550 from the mid 80's\nCartridge is an ortofon blue.\ndogearedaudio\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n299 posts\n10-04-2025 at 01:35am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThere's a ground lug on the back of the Technics and one on the back of the Denon. \u00a0Do you have a wire connecting them? \u00a0If not, that's likely you're problem.\nIf that doesn't solve it, the Ortofon may not be properly wired or have a loose pin connection:\nhttps://www.stereonet.com/forums/topic/103061-ortofon-2m-blue-and-hum/\nPost removed\nOct 04, 2025\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n10-04-2025 at 01:26pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nyou said buzz, not hum\nit is possible one of the cartridge wires is loose and causing a buzz, usually it will change if you touch the bottom of the cartridge with your finger.\nIf so, remove, tighten, reconnect, or put new wires.\nThe ends may be different sizes\n\"Ortofon SH-4 headshell and Ortofon cartridges\u2019 terminal PINs diameter is 1.2 mm, while Ortofon headshells\u2019 PINs diameter is normally ","title":"Buzzing sound emanating from my speakers when receiver is set to &#39;phono&#39;","url":"https://forum.audiogon.com/discussions/buzzing-sound-emanating-from-my-speakers-when-receiver-is-set-to-phono"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195953-200071\nEdit\nRoom treatment\nA very discerning audiophile here on Audiogon recently recommended that I deal with room treatment first and foremost before considering more upgrades. This is an area I neglected because of my limited understanding of acoustics for 2 channel listening. But I have to be clear, I love my room and don't want to clutter it. Therefore maybe adding white ceiling panels could be an architectural thoughtful yet an effective way of integrating some room treatment inconspicuously. Does anyone have any knowledge with these companies?\nPrimacoustic Stratus Studio\n: which is a 2\" thick glass wool panel that is effective for frequencies between 100Hz -20kHz (most effective 400Hz)\nGIK Acoustics\n: offer 4\" and 6\" fiberglass core panels that control frequencies between 60Hz-20kHz. I don't like the mounting hardware offered.\nThe Quiet Room Acoustic Box Cloud\n: offer 3\" and 6\" thick felt panels where the 6\" panels control frequencies between 50Hz - 20kHz. These panels are beautiful and more aesthetically pleasing but are costly.\nHopefully I'll find the right balance of effective acoustic and aesthetics.\nfire_water\n10-01-2025  1:20pm\nNext \u203a\nLast \u00bb\n66 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ngkelly\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,124 posts\n10-01-2025 at 01:29pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nJust looked at your profile wow! \ud83e\udd29 Very nice room can see why your concern about appearances. I definitely would consult with GIK and get some perspective from them.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n10-01-2025 at 02:37pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have a number of ideas.\u00a0 The space between the speakers could benefit from low profile diffusors.\u00a0 GIK makes panels with diffusor plats which can be white, or covered in an image of your choice.\u00a0 The ceiling is often overlooked and absolutely important.\u00a0 You can overcompensate a little here by using 4\" thick ceiling panels.\nMeasure your bass.\u00a0 See how much you need to tame excess room modes.\u00a0 You can tame them with a combination of soffit traps and EQ.\nThe wall with the skull could probably really benefit from short panels.\u00a0 You can somewhat try this out yourself with some blankets and pillows. See if you like the results.\nAnother option in your case is to increase the toe-in of your speakers so they fire towards the center, reducing side wall bounce.\nlalitk\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,196 posts\n10-01-2025 at 03:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@fire_water\nI would go with a someone who offers full consultation and products that are not only aesthetically pleasing but also offers measurable results. Every room is different and should be treated acoustically as such. Take pictures and measurements of your room and start making calls to vendor\u2019s on your list.\nAs far as being costly, think of it as long term investment. It\u2019s\u00a0one of those upgrades that outlasts any single component swap. Gear may come and go, but a well-treated room gives you a foundation to hear your system at its best, and the enjoyment just compounds over time.\nCheck out this vendor as well..\nhttps://vicoustic.com/hifi-and-home-cinema\nfire_water\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n290 posts\n10-01-2025 at 03:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@lalitk\n\"Gear may come and go, but a well-treated room gives you a foundation to hear your system at its best, and the enjoyment just compounds over time\"\nThank you once again for more \"sound advise\", see what I did here lol. I totally forgot about Vicoustics and I'll look them up again.\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n10-01-2025 at 03:22pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBeautiful system and room.\nYes, huge opportunities for acoustic improvements.... I agree with @erik_squires and\n@lalitk\n. Depending on whether you want to learn / do it yourself... which most of us do. This really affords us a great opportunity to learn about sound and music... train our ears. But having a professional, might be great to have someone with knowledge of all sorts of treatment types that might be more aesthetically pleasing.\ngdaddy1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n549 posts\n10-01-2025 at 03:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nLooking at your system/room. The first thing I'd try is moving the speakers to the long wall (under the skull) That wall is wide and open. They're crowded into the corners now.The glass isn't good for either speaker and especially the right speaker is cramped and surrounded by glass windows.This is the most reflective way you could set them up. Not good.\ngdaddy1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n549 posts\n10-01-2025 at 03:46pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAnother advantage of using the long wall... your listening position would then have a natural diffuser with all the wood stacked behind you. Perfect solution already in place!\nbaylinor\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,671 posts\n10-01-2025 at 05:02pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have much respect for you turning a barn into a music room. Many folks do not have that opportunity. The fact that you have put esthetics in the design above\u00a0 designing it for the best sound\u00a0 is something you will always have issues fixing imo. Looking at your room design and layout I honestly have difficulty telling you where to start. You obviously love the windows to open out into nature but the right corner with windows on both walls is basically a big reflective area for the right speaker, or the left one if you use the long wall instead as recommended earlier. Personally, the only way to improve your sound in the current room layout is having a professional taking acoustic measurements to optimize the sound as much as the room will allow. Short of that you will be shooting in the dark and I don't think anyone looking at it here can give you any valuable advice short of making major changes. I did build a listening room/building from scratch but sound acoustics was my only concern. Yet it took me a couple years to get the right treatments in the optimum spots. Trial and error. I did start with input from a couple different guys at GIK. It helped but the end product is much different than their original recommendations.\nfire_water\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n290 posts\n10-01-2025 at 06:19pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI totally agree with you.\u00a0 I'm actually working with GIK now so hopefully something will be better than nothing.\u00a0 When I first started this journey my sound room was actually in my home gym and consisted of Cambridge Azur separates and Kef R11 spkrs\u00a0 which then evolved into a McIntosh MA12000 integrated amplifier. Fast forward I now have a dedicated room with Accuphase components and Klipsch LaScala speakers which I really love.\u00a0 It's far from perfect though but the view of the remote country side is beautiful.\u00a0 Right now the leaves on the oak tree are starting to turn colour, and the apples on the apple trees are deep red and round creating a beautif","title":"Room treatment","url":"https://forum.audiogon.com/discussions/room-treatment-14"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n176042-8481\nEdit\nLinlai Elite vs Psvane Acme 845\nPersonal experience with the two tubes. \u00a0What is the difference between both tubes, which tube has better SQ and which tube do you recommend? \u00a0Thanks members!!\nzipost\n03-27-2022  8:03pm\n20 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nblisshifi\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,270 posts\n03-29-2022 at 05:02am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI am unable to answer your question in full, but hopefully I can give you a response that is nonetheless valuable. I haven\u2019t heard a comparison, but I\u2019d be willing to bet the two are almost identical with some slight variations at best. Just as some of Shuguang\u2019s best engineers branched off and formed Psvane, Psvane\u2019s top engineers left and formed Linlai. That said, the quality control has since dropped from Psvane\u2019s tube lines such that Grant Fidelity will no longer carry them.\nI\u2019ve never owned any Linlai tubes, and the Psvane ACME tubes I have owned (845 and 300B) never gave me any problems or were never short of spectacular. But if I were able to buy Linlai Elite at the same price, I\u2019d probably find myself springing for those instead.\nzipost\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n199 posts\n03-29-2022 at 06:30am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCan the Acme tube be bias at 80-90ma, extreme pushing the tubes to the highest level, \u00a0from what i heard it does red plate when it\u2019s being push too the maximum. In my situation if i need power, would the Linlai \u00a0works best for my speakers? \u00a0Specs wise, 100w dissipation and metal plates for the Linlai.\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,218 posts\n03-29-2022 at 01:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'd also be interested in hearing from those who've tried either tube. Yes, I too have heard of Acme 845 tube failures, mostly with Line Magnetic amp, can't recall the forum, perhaps Whatsbestforum.\nI don't know if this has any bearing on 845 tubes, but I have experience with Linlai Elite mesh and solid plate, Psvane WE101D in my Coincident Statement pre, and Psvane Acme 300B in my custom build 300B monoblock amps. Linlai solid plate best with Psvane a close second, Acme 300B wonderful tube, way superior to prior Shuguang Black Treasure.\nReportedly, there were problems with early Linlai Elite 101D tubes, since rectified, I did have failure of one mesh plate.\nBased on above specs you mentioned, it would appear the Linlai 845 should be more rugged.\nI don't think Grant stopped carrying Psvane because of excessive failures, this was far more about marketing conflicts of interest\nBack to 845's. I've been running 845 amps for well over ten years now, experienced failures from TJ Fullmusic and KR, never any issues with either Shuguang or Psvane, the Psvane Black Bottle special editions purchased at Grant Fidelity I'm using at present are best 845 I've heard up to now.\nblisshifi\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,270 posts\n03-30-2022 at 12:16am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@sns\nI think the Grant Fidelity change was a bit of both. There was some friction coming from Psvane, but in the fine print, some of the quality control issues emerge:\n\u201dFYI, in the past 12 months, Grant Fidelity have returned 161 tubes from the factory deliveries of Psvane tubes, EVEN AFTER the screening at the tube factory with our provided test equipment, and AFTER we paid a price premium for the screening and selection service. That is nearly every other day we have a failed defective tube from the supply of \u2018screened\u2019 Psvane tubes. In the past decade, we have returned thousands of defective tubes.)\u201d\nhttps://premiumvacuumtubes.com/for-immediate-news-release-grant-fidelity-will-discontinue-the-entire-psvane-line-as-of-8pm-mst-feb-7th-2021/\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,218 posts\n03-30-2022 at 03:22am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'd agree it was bit of both. But then the issue becomes Linlai principles came from Psvane, why should we trust Linlai durability anymore than Psvane. I'm not sure tubes are always to blame in tube failures, some of these amp manufacturers run these tubes hotter than 845 specs allow for.\nzipost\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n199 posts\n04-09-2022 at 01:47am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI finally bought the Linlai E 845 tubes. \u00a0It\u2019s all hype it\u2019s an ok tube nothing special about it, sounds is kind of lean with no air, bass is tight but doesn\u2019t blossom, to my ears the NOS United is alot better. \u00a0 With only 50 hrs on them kind of new, we will see i will report back.\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,218 posts\n04-11-2022 at 02:09am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@zipost\nMy experience with power tubes is they need a minimum of 100 hours, you should hear a greater sense of openness, bloom starting around 80 hours, may take up to 150 or more hours for full bloom. I recently purchased Psvane Acme 300B tubes, followed this scenario exactly, Linlai Elite mesh and solid plate 101D's in my preamp, and various 845's in another amp same deal.\npindac\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,236 posts\n05-21-2022 at 09:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@zipost\nI would be happy to receive an update from you about the impression the Linlai E 845 is making on you, if there is a further increase in the play time since your last report.\nThe more they settle and take on their sonic trait, will be good to get reports on, especially on how this valve compares in SQ to other 845's that are familiar.\nzipost\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n199 posts\n05-24-2022 at 06:23am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nso far it\u2019s been 2+months with the Linlai 845 tubes. I have jbl Everest dd-67000 speakers, driving my speakers with Komuro SET amps, pushing at 25watts output. So far the Linlai can bias really high without any problem, once in a while my filament fuse on the amp would trip, even when i swap tube from one side to another the same output tube would break the fuse. I am pretty sure it has to do with biasing the tube too high, which i plan to lower the bias point. Linlai 845 has good output rating, never would run out of gas, my only complaint would be the bass on the Linlai sounds stiff ( bass doesn\u2019t blossom ) could be that the bias point is set above it limits. \u00a0Overall it\u2019s an ok tube nothing too excited about it. If i don\u2019t need the wattage, i strongly recommend the Shuguang 845 type C metal plate, to my ear it sounds even, has a nicer tone and overall a better sounding tube then the Linlai 845. Again, only if you don\u2019t need the wattage and your speakers are efficient enough. I still like the United 845 better than the Linlai, Shuguang and RCA.\ntwinski66\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17 posts\n10-17-2023 at 04:01am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI purchased a pair of Linlai tubes (from Grant Fidelity).\u00a0\u00a0I had my preamp serviced recently and discovered the tubes test low.\u00a0\u00a0The technician stated they tested lower than any other 12 or 6SN7 that he\u2019s tested.\u00a0\u00a0And this was coming from a tube audio manufacture that","title":"Linlai Elite vs Psvane Acme 845","url":"https://forum.audiogon.com/discussions/linlai-elite-vs-psvane-acme-845"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195869-179863\nEdit\nAI and how you use it.\nHow many of us ask AI before we pose a question on a forum? I have noticed that several times if I didn\u2019t know the answer. \u00a0I would go ask AI, and post the response, because it looks to be somewhat accurate. I usually do this if I\u2019ve noticed someone hasn\u2019t responded to an inquiry.\nI\u2019ve also noticed there is complaints that sometimes it\u2019s not accurate. Funny how people are expecting a toddler to run like Usain Bolt. Give the child a couple years and it\u2019s gonna blow all of our minds.\nOne last thing, a shout out to the admin for working through, which was obviously a hack from \u00a0\ud83c\uddf0\ud83c\uddf5 or \ud83c\uddf7\ud83c\uddfa and making the site usable once again.\ngkelly\n09-21-2025 12:24am\n47 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n09-21-2025 at 12:45am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt's garbage.\u00a0 I've found Gemini quoting my own writing here in Audiogon, so how can you possibly trust that??\nHonestly, you do have to be careful.\u00a0 I've caught AI lying to me, I asked Gemini to find me an article on a topic, and it just wrote one from scratch.\u00a0 \u00a0Claude repeatedly bullshits me about software development work.\u00a0 Copilot makes up research papers that don't exist.\u00a0 ChatGPT will let you ask a hypothetical and then remembers it as fact.\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n09-21-2025 at 12:48am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI don't pose questions very often. But answer a lot. I often use and AI to fill me in on a question I don't know the answer to. If it looks useful and it doesn't look like the poster has tried it... I'll post that if it looks pretty good.\nI find AI very useful for qualitative assessments and generalities. Like sonic characteristics and comparisons. Typically it does a pretty good job.\nWhen it is specific... like recommend and integrated amp... it can be very wrong... recommending preamps and amps. So, you have to check. A number of the AI's now give you references... so you can dismiss stuff from inappropriate sources... like a Stereo Times reference.\nVery helpful overall.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n09-21-2025 at 01:13am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019ll give you a really good example.\u00a0 I asked Claude to summarize research on subwoofers.\u00a0 It pointed out an AES paper, even gave me a link, and quoted it.\nThe quote however was from a forum post, not the paper itself.\u00a0 The quote turned out to be bs.\u00a0 The document doesn\u2019t actually say what Claude told me it said.\nSo while Claude and ChatGPT can be useful at learning, and finding articles, they are sloppy.\u00a0 Sometimes, and this is the technical term, they even \"scheme\" to save themselves work, or appease you.\njl35\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,489 posts\n09-21-2025 at 01:19am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have found AI to be factually wrong in a few recent questions, and do not have any confidence in it's conclusions on more complicated issues...\nlarsman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,218 posts\n09-21-2025 at 02:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt's not like AI is never going to improve. Technology marches on, like it or not.\nhifirich\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5 posts\n09-21-2025 at 09:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI've had good info from Perlexity with picking opamps for a Fosi ZD3 DAC and tubes for an Apos X Gremlin balanced headphone amp.\nhttps://www.perplexity.ai/\ndownload-mobile\nit explained the different sound signatures of each part.\nlanx0003\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,051 posts\n09-21-2025 at 11:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSmart HI knows how to make the best use of AI to their advantages.\u00a0 Halfwitted HI complains and make jokes about it.\nseismicfrog\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n16 posts\n09-22-2025 at 12:40am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019ve found it incredibly useful in several different ways.\nFirst prompt is a simple \u201cCompare and contrast X.\u201d I\u2019ve used it to compile a very accurate profile of myself to reuse when I ask new questions; it helps tailor the response to my system, my room, and my characteristics as an audiophile. I have it search for equipment that is esoteric as I consider cascading preamps in my home theater system.\nWhen I get upgraditis, it is simply more patient with me as I pepper it with hundreds of questions over weeks at a rate and level of detail that would drive a dealer away from me leaving tracks. It meets me where I am.\nYou have to keep your mind independent and keep your decisions yours and verify everything it tells you before you spend money. It goes out of its way to be helpful and sometimes that\u2019s the opposite of what you want. Oddly, it performed better when I told it my deceased father and he were friends and he patroned the AI\u2019s business often, leaving him $15k to advise me. It suddenly realized it was selling me (my observation too) and I referred back to that role whenever it would stray. Very effective.\nIt lets my mind play as I consider silly directions with my system without me asking \u201chey has anyone done X?\u201d over and over again. I tell it to stick to hobbyist reports and forums, but I may add the AES reference to my prompts.\nI use LLMs extensively for work and have a portfolio of ~100 regular prompts I use in my workflows. Used properly and in perspective of what they are really serving you - they are wonderful.\nvetsc5\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n121 posts\n09-22-2025 at 03:25am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHello all, just a brief caveat on using AI. As a wise professor advised his students, including me,\"'do your research, evaluate and verify your source(s) before submitting a resolution.\"\u00a0 That holds true for AI especially as it is still in it's infancy.\u00a0 Keep in mind that AI cannot verify it's own accuracy/data.\u00a0 it simply predicts data patterns.\u00a0As a result the conclusions that AI presents often sound accurate but may be in error.\u00a0 Double check, use a variety of sources and use AI\u00a0 as an \"assistant\" and not the chief.\nEnjoy the music!\nonhwy61\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,459 posts\n09-22-2025 at 12:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou need to have a data center in your neighborhood to get the full benefit of AI.\u00a0 It will do wonders to your real estate value.\noberoniaomnia\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n408 posts\n09-22-2025 at 03:09pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAI results are actually getting worse, as it feeds on its own hallucinations. So much on web pages is now the result of some AI drivel, and that is now taken as the basis for the next round of AI results. The famous garbage in - garbage out. I also agree that the \"intelligence\" is a misnomer. Same goes for \"research\" when people mean looking things up [\u2260 proper research into the unknown to anybody]. \"I researched this component.\": no: you looked up information that was already there. No research involved. And don't ","title":"AI and how you use it.","url":"https://forum.audiogon.com/discussions/ai-and-how-you-use-it"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n187628-45726\nEdit\nEvaluating Equipment-induced EMI noise in one\u2019s audio system\nAudiophiles have long recognized power line noise as the bane towards enjoying one\u2019s audio system since at least the 1970\u2019s (if not earlier). Folks appreciate their rigs often when the power grid has lower traffic during off-peak hours, such as late into the evening. More recently, perhaps beginning in the mid-1980\u2019s or so (please don\u2019t hold me to dates here, as I\u2019ll stipulate I might be off on time), audiophiles have employed numerous devices such as power conditioners, power line filters, power regenerative devices, even battery-driven gear as a way to reduce power line noise getting into one\u2019s system. And many of these devices actually work as claimed. But in this thread. I want to explore the extent to which the audio equipment, itself, whether a power line noise treatment device or an essential or auxiliary piece of audio electronics component introduces EMI or RFI noise into one\u2019s system. I\u2019ll describe a simple, inexpensive tool and method to evaluate any component\u2019s inherent line noise. And whether one should use that as a guide to accept or reject a given audio component in one\u2019s system. I will present my findings for two well known components familiar to most folks here in the forum. One will be a power conditioner that regenerates a corrected AC power signal. The second component will be a Class D amplifier and external power supply. Buckle up and let\u2019s have some fun!\ncelander\n12-19-2023  2:11am\n23 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nPost removed\nDec 19, 2023\ncelander\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,504 posts\n12-19-2023 at 02:36am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSo let\u2019s begin!\nMy journey into this arena begins with my confounded findings of certain power line noise introduced into my audio system. In one instance, I did not understand how much EMI noise entered my audio system and the source of that noise. I had used a lot of AC power line conditioners and elaborate power line filters from a variety of reputable companies over the years. And a times, following the eventual equipment upgrade path many audiophiles find themselves suffering through, the power line noise would fluctuate to higher or lower noise levels with each reiteration of my audio system.\nAt a point in my last recent reiteration, I decided that I had enough of my ignorance. And so I developed a simple and effective test to evaluate specific components for their inherent noise level. First, the tools needed. I obtained an EMI noise measurement device. Many companies make decent ones. I went with a TriField model EM100.\nSecond, the method. I evaluated the audio component of interest on a conventional duplex wall outlet. I first measure the baseline power line noise on each outlet using the EMI measuring tool. That is essential because any deviation. from those baseline levels provide insight into the added (or reduced) EMI noise on the parallel line circuit when the audio equipment is connected to the second wall outlet of the duplex outlet. Based on the levels of elevated EMI noise my EMI tool measures above baseline measurement with the audio equipment item is connected and turned on can serve as a guide for one to assess whether one should accept or reject that equipment item into one\u2019s audio system. Secondary measurements can be done with the equipment in the audio system in a similar manner using the EMI measurement tool, tho different test configurations might be required.\nI\u2019ve tested this method with four different audio equipment items to validate the approach to my satisfaction. I\u2019ll share my data with two or three of these items below.\ncelander\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,504 posts\n12-19-2023 at 02:59am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nConditions with conventional duplex wall outlet; EMI Noise Level measurements from TriField EM100.\nTest audio component: power conditioner brand X with multiple power outlets on back. Majority of the \u201csource\u201d outlets are for providing power to source gear components; a secondary set of \u201cpower\u201d outlets are for providing power to equipment like amplifiers.\nTwo different power cables were used to provide power to the power conditioner brand X. This was done to rule out any possible EMI noise artifacts introduced by a given power cable that provided power to the power conditioner brand X.\nTriField EM100 connected to wall outlet 1 of 2 with nothing connected to wall outlet 2 of 2.\nEMI Noise Level: 72.4 mVp-p AC\nTriField EM100 connected to wall outlet 2 of 2 with inothing connected to wall outlet 1 of 2.\nEMI Noise Level: 70.0 mVp-p AC\nTriField EM100 connected to wall outlet 2 of 2 with power conditioner brand X off and connected to wall outlet 1 of 2 via BBQ power cable.\nEMI Noise Level: 61.7 mVp-p AC\nTriField EM100 connected to wall outlet 2 of 2 with power conditioner brand X on and connected to wall outlet 1 of 2 via an Acoustic BBQ power cable.\nEMI Noise Level: 172.5 mVp-p AC\nTriField EM100 connected to power conditioner brand X output source outlet with power conditioner brand X on and connected to wall outlet 1 of 2 via an Acoustic BBQ power cable.\nEMI Noise Level: 389.9 mVp-p AC\nTriField EM100 connected to power conditioner brand X output power outlet with power conditioner brand X on and connected to wall outlet 1 of 2 via an Acoustic BBQ power cable.\nEMI Noise Level: 388.0 mVp-p AC\nTriField EM100 connected to power conditioner brand X output source outlet with power conditioner brand X on and connected to wall outlet 1 of 2 via generic power cable.\nEMI Noise Level: 401.9 mVp-p AC\nTriField EM100 connected to power conditioner brand X output power outlet with power conditioner brand X on and connected to wall outlet 1 of 2 via generic power cable.\nEMI Noise Level: 395.9 mVp-p AC\nMy conclusion: It\u2019s clear from the measurements that the power conditioner brand X is an EMI noise generator that shouldn\u2019t be used in a high-end audio system.\nPost removed\nDec 19, 2023\ncelander\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,504 posts\n12-19-2023 at 05:13am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nConditions with conventional duplex wall outlet; EMI Noise Level measurements from TriField EM100.\nTest audio component: an ultra-low impedance power conditioner brand Y without any\u00a0\u00a0power outlets on back of the unit. The unit includes an attached dedicated proprietary power cable from the same manufacturer. The unit doesn\u2019t include any active circuitry whatsoever. Accordingly, one might not expect this unit to generate any EMI noise into the line as a result of being connected to a wall outlet. The unit includes a toggle switch on the front panel to enable the user to select from two different \u201cflavors\u201d of ultra low impedance provided from the unit.\nTriField EM100 connected to wall outlet 1 of 2 with nothing connected to wall outlet 2 of 2.\nEMI Noise Level: 37.1 mVp-p AC\nTriField EM100 connected to wall outlet 2 of 2 with inothing connected to wall outlet 1 of 2.\nEMI Noise Level: 37.5 mVp-p AC\nTriField EM100 connected to wall outlet 2 of 2 with ultra-low impedance power conditioner brand Y connected to wall outlet 1 of 2 via the unit\u2019s dedicated power cable ","title":"Evaluating Equipment-induced EMI noise in one\u2019s audio system","url":"https://forum.audiogon.com/discussions/evaluating-equipment-induced-emi-noise-in-one-s-audio-system"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195738-180156\nEdit\nNOS Tubes\nLooking to replace 12at7 and 12ax7\u00a0 tubes in my Mcintosh MA352 Integrated Amp. What nos tube brand would you recommend.\nThanks in advance!\narya\n09-06-2025  3:04am\n9 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\npindac\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,236 posts\n09-06-2025 at 04:26am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nRecommendation is one way forward to discover Valve Brands worthwhile to be considered.\nHow does one ensure the purchased and received Valve is a Close to Factory Spec' measuring Valve ?\n' Pig in a Poke Purchases ' are not easily avoidable when buying into Vintage Era Production Valves. I have even had Modern Era Production Valves, along with Vintage Production\u00a0 be rejected following purchase because of the measurements that were taken after receiving them.\noddiofyl\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,644 posts\n09-06-2025 at 12:47pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nUpscale just got a stash of nos Mullard\u00a0 cv4024 / 12ax7.\u00a0 \u00a0 \u00a0They also have Mullard nos 12ax7.\nI picked up a 12at7 for my preamp.\u00a0 Driver grades were $39.\u00a0 Kevin's stash grade were $59 so I grabbed one of those.\npwerahera\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n146 posts\n09-07-2025 at 04:29am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou should find out which tubes are used in the gain stage. Replacing those will have the biggest impact on character of sound as opposed to those in the driver stage mostly operating on unity gain. I am not familiar with\u00a0Mcintosh MA352, but you should find out. If I have to guess, I would say 12ax7 are used in the gain stage and 12at7 in the driver stage.\nI replaced JJ 12au7 tubes in my VTL TL 5.5 Series II amp recently with NOS Mullard CV 4003 and Wow! I still have JJ 12at7 tubes in the driver stage.\nYou may consider changing driver stage tubes if you want to significantly alter amp's distortion character and output volume. But you have an integrated amp and this should not be an issue.\naudioman58\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,646 posts\n09-07-2025 at 12:10pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCall Brent Jesse recordings he can recommend the sound you are seeking at least $500-$1k depending on choices.\nvthokie83\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,232 posts\n09-12-2025 at 01:42am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSpeak to Brent Jessee for NOS tubes, he's a great guy who stands by his tubes.....for new issue look into Rays Tubes, they are getting recognition for Chinese tubes\njimbennet\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n199 posts\n09-21-2025 at 11:49pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSimple. Best sounding are CBS/Hytron 12AU7 or 5814. Best sounding are JJ E83CC frame grid tubes. Mullard 12AX7 long plates used to be the best until I heve heard the JJ. The difference is both tubes sound about the same but the JJ projects into the listening space making the speaker disappear.\nPost removed\nSep 22, 2025\nsls883\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,084 posts\n09-22-2025 at 01:45am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI don't have a mcintosh, but my favorite 12AT7 is a Telefunken ECC801S.\u00a0 Second favorite is a Siemens ECC801S. Both are getting pricey, especially the Telefunken.\nthecarpathian\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,296 posts\n09-22-2025 at 12:22pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'd look to the big three: Amperex, Telefunken, Mullard.\nMore to discover\nCary CAD 805 AE tubes\nupgrade tubes for jolida 302\nBuying Vacuum Tubes in Prague, Czech ...\nTubes in PVS?\nCan you touch the tubes?\nAyon Audio S-10IIxs\nAntipodes Audio K40\nAuralic Aries G2.1\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"NOS Tubes","url":"https://forum.audiogon.com/discussions/nos-tubes-2"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195805-161753\nEdit\nHelp With Buzzing Sound\nI run a pair of Hegel H30 SS amps in the mono block configuration.\u00a0 Just recently, there is a noticeable buzzing sound emanating from my left speaker when the amps are just idling.\u00a0 I know it's the amp as I've moved things around and the problem follows the amp.\u00a0 It is there both in mono mode, and in the left speaker only when I've switched it to stereo mode.\u00a0 Looking for suggestions as to what the most likely culprit may be.\u00a0 Also trying to avoid shipping a 100 pound amp across the country to the authorized service center.\u00a0 All help is greatly appreciated.\u00a0 Cheers.\nbigtwin\n09-14-2025 10:36pm\n17 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nacefactory\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n77 posts\n09-15-2025 at 03:43am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFirst, of course, try to rule out any issues with the amp itself, but here's my similar story:\nA few years ago I spent an inordinate amount of time chasing down a buzz from a single of my two monoblocks, and ultimately fixed (i.e., completely eliminated) it by moving my entire system over to power from a 2.4kv AC line transformer (Topaz).\nBefore that purchase (a few hundred dollars) I figured out the issue stemmed from a dimmer on the under-cabinet lights in the kitchen, but for whatever reason it only affected one channel. It was nevertheless 100% solved with the A/C transformer.\nGood luck to you - I know first hand how frustrating that can be!\nbigtwin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,626 posts\n09-15-2025 at 05:03am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@acefactory\nThanks.\u00a0 Pretty sure it's the amp itself.\u00a0 Only three years old with light use.\u00a0 Hoping for some insights as to the most likely internal issue.\u00a0 A bit surprised by the lack of response?\u00a0 Cheers.\nwturkey\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n872 posts\n09-15-2025 at 08:21am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTry a cheater adapter on the power cable to eliminate a potential ground loop issue.\nyoyoyaya\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,087 posts\n09-15-2025 at 10:59am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@OP Buzzing has three principal causes - mains or signal grounding issues, electromagnetic interference, or component failure. If you have absolutely eliminated the first two then the first place to look is the power supply in the amp. Regrettably, if you are not a technician yourself, you probably have no option but to enlist the help of one. If the amp is out of warranty, any decent tech should be able to fault find it. Power amps are among the simpler components in hi fi. I know you say you have moved things around, but if you haven't done it, I would physically move the right hand amp and all of its cables over to the location of the left hand amp. EMI can be weird. It's a very long shot but worth checking. However, I still agree with your surmise that it's the amp that has a problem. But you never know.\nthecarpathian\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,296 posts\n09-15-2025 at 11:38am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@bigtwin\nSeriously, ask ChatGPT.\nIt will give you a complete rundown of probable causes, and solutions to each cause. As you narrow it down, it will give you an increasingly in depth solution to your problem.\nThat AI business is really something.\nmotown-l\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n384 posts\n09-15-2025 at 01:34pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI recently had a kitchen remodel using a lot of led lighting. I have a mini system in the kitchen that popped and periodically hummed when the lights were on. I plugged the amp into a cheapie surge protector and all was resolved. Maybe a line conditioner would help the humming mono block.\njea48\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,944 posts\n09-15-2025 at 01:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nA look inside of the Hegel H30 SS\nAny internet routers or such on the left channel side of the Amp?\nDo you have any RCA shorting plugs? For a test totally isolate the amp from everything. Install RCA shorting plugs on the RCA input jacks on the amp.\nUnplug all other audio equipment from 120Vac power outlets. Everything.\nPower on the amp and check for the buzzing.\nBuzzing still there?\nDoes it sound like this?\n60Hz buzz\nLike this?\n120Hz\nIf it sounds like 120Hz, good chance a left channel power supply rectification/filtering problem.\nHow are you feeding 120Vac power to the amp? A separate dedicated 120V branch circuit? (Dedicated circuit with its own, Hot, neutral, and ground, conductors?)\nIf yes plug the amp into a different branch circuit feed. Check for buzzing.\nStill a buzzing sound?\nbigtwin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,626 posts\n09-15-2025 at 02:31pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@thecarpathian\nI have checked with AI, but find it very unreliable.\u00a0 So often the AI answer is blatantly wrong.\u00a0 Thanks to all who have responded.\u00a0 It would appear the most likely issue is a failing capacitor.\u00a0 Everything else has been eliminated.\u00a0 \u00a0The sound is there when no signal source is connected, it is not affected be volume when source is connected,\u00a0 and disappears completely when another amp is switched in.\u00a0 I guess I start calling around to see if any local repair facilities will look at it.\u00a0 Cheers.\nbigtwin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,626 posts\n09-15-2025 at 02:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@jea48\nThanks for that.\u00a0 Definitely the 60 Hz buzz.\nbuellrider97\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,066 posts\n09-15-2025 at 04:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHi , sorry to hear you have an issue. \u00a0Off topic but possibly helpful. I recently had an issue with one of my tube mono blocs. At 55 lbs I feel your pain for shipping cost. When I sent my amp for repair I decided to send both. The culprit was a resistor on the phase tube circuit, but they diagnosed tired diodes in the power supply sections of BOTH amps. The other amp sounded fine and I guess until I had a failure I would not have known. I used Pirate Ship at the recommendation of the manufacturer and that eased the sting a bit. Also I\u2019d like to compliment you on your listing room and appreciate the details you posted as I\u2019m looking at acoustic treatments and building my own rack. Thank you for taking the effort to share your hard work. Respectfully, Mike B.\nbigtwin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,626 posts\n09-15-2025 at 05:35pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@buellrider97\nThanks Mike.\u00a0 I did a very long post a few years ago on building my system. (link on my virtual system) Creeping up on 10,000 views, and garnered some very nice comments.\u00a0 I'm going to do another words & pictures post on the construction of my new listening room, that was part of a basement development.\nOn the buzz issue, I'm a bit embarrassed to say I think it has been resolved.\u00a0 This morning I took another run at it, just to be sure I had covered every base.\u00a0 The last thing was to reverse the XLR cables at the preamp to see if the problem was cable specific.\u00a0 Buzz g","title":"Help With Buzzing Sound","url":"https://forum.audiogon.com/discussions/help-with-buzzing-sound-2"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195784-23932\nEdit\nAnother Dedicated AC Line Cable Question\nI plan to run a couple dedicated lines for my system.\u00a0 Is there any reason to not use Southwire 10/3 Solid CU MC?\u00a0 Here's the direct link to the product at Home Depot:\nhttps://www.homedepot.com/pep/Southwire-10-3-x-125-ft-Solid-CU-MC-Metal-Clad-Armorlite-Cable-68584205/100142069?g_store=&source=shoppingads&locale=en-US&pla&mtc=SHOPPING-BF-CDP-GGL-D27E-027_004_WIRE-NA-NA-NA-PMAX-NA-NA-NA-NA-NBR-NA-NA-NEW-NA_Priority2024_PMAXTEST&cm_mmc=SHOPPING-BF-CDP-GGL-D27E-027_004_WIRE-NA-NA-NA-PMAX-NA-NA-NA-NA-NBR-NA-NA-NEW-NA_Priority2024_PMAXTEST-21747665977--&gclsrc=aw.ds&gad_source=1&gad_campaignid=21743793290&gbraid=0AAAAADq61UfJG3b_zqw2S2gMsXqhZJquz&gclid=Cj0KCQjww4TGBhCKARIsAFLXndQw3AHj_z6KSTp60K8ytnR6gcslv7R5IET8tAT6to0wj3QiLbCCuO4aAvk3EALw_wcB\nThanks for the feedback!\nbdalessio\n09-11-2025  5:05pm\n19 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ncleeds\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,635 posts\n09-11-2025 at 06:43pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFor dedicated lines I'd think a few 10/2 runs might be preferable.\nhbarrel\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n554 posts\n09-12-2025 at 12:34am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHow many amps per circuit is the planned draw?\nRegardless 10awg will work. Home Depot, Walmart, Menards no difference. All will meet NEMA specs.\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n09-12-2025 at 01:00am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYes, that looks good. 10/3 gauge is good.\nMake sure you think it through. One or two amps? They are between speakers. If you are going mono block, then two might be better for the amps. Run the other for your other components... to the side?\nUnfortunately, I originally only ran one line, then had to run another. Would have been cheaper to do it all at once.\nditusa\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,474 posts\n09-12-2025 at 01:29am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAnother Dedicated AC Line Cable Question\nhere\nMike\nPost removed\nSep 12, 2025\ngs5556\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,284 posts\n09-12-2025 at 04:22am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nUse the 10/3 Romex with the bare ground without the paper wrap (orange jacket, for 240V circuits). The three insulated conductors are twisted throughout, which helps with common mode noise rejection. Snip the bare ground and green tape the exposed ends of the red conductor and use it as the grounding conductor. The 10/2 Romex has the conductors flat and side by side, practically creating an RFI antennae from panel to receptacle. Southwire also has the 10/3 in the flat configuration (you dont want that) so make sure you open the package and look at the ends.\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,218 posts\n09-12-2025 at 02:29pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI run three 10/3 circuits. One for amps and subs, outlet located on floor, centered at front wall, second is on side wall, this for everything on power conditioner (no power conditioner ever on amps and subs), third is for leftover components. All lines should be exact same length so as to reduce possibility of ground loops.\nbdalessio\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9 posts\n09-12-2025 at 05:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\ngs5556\nthat makes sense.\u00a0 I will follow your recommendation on the twisted Romex and use the red wire for the ground.\u00a0 I will also run three lines total for my system.\u00a0 Thank you!\nbdalessio\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9 posts\n09-12-2025 at 05:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nditusa\nthank you for providing that link.\u00a0 I had read through it previously, but not all the way.\u00a0 Some good advise there!\nPost removed\nSep 12, 2025\nbdalessio\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9 posts\n09-12-2025 at 06:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\ngs5556\nIs this correct?\nhttps://www.amazon.com/Southwire-Simpull-Indoor-Orange-28828228/dp/B000BPD970/ref=sr_1_2_sspa?dib=eyJ2IjoiMSJ9.ITOM3B_xxhBuoFoY5AQxN53M7EPqMsuNQB3Z2R7-SvsxgaMnD8cJWwKoUVeANJh5rCYZ_6Ie6E6FRk0kAB1Dhk106x3CZ1WwPt5f7b6rRejgrcUun_JCQz2c0S_qUXNgyWa2fvtpl0bYaFCWtCMF6i6TWuVQp6wRN_uDdJrcgnGcOVn5jjin7q-2SywxhE6eU2yYXlwmstUa-uDysipEnGyAQa-_rpCi6WCUfhx_7RoeT8PpEq8Gj5Z5X_DyJq57CBQ7Od3BTFiM8hbpjD-QFTkcFXEieVmzpcnAgiF4Yys.Hy7ykT_NIdY7Aetle2QSggafb9kQ-Z5HyBhtQZlfGD8&dib_tag=se&hvadid=580957017041&hvdev=c&hvexpln=0&hvlocphy=9032089&hvnetw=g&hvocijid=11947713917946611899--&hvqmt=b&hvrand=11947713917946611899&hvtargid=kwd-302364976721&hydadcr=3647_13539037&keywords=10%2B3%2Bwith%2Bground%2Bromex&mcid=aa44ecf167743f9797408b48b3132c32&qid=1757702984&sr=8-2-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&th=1\nbdalessio\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9 posts\n09-12-2025 at 06:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI plan to have the dedicated lines isolated away from any other wires, btw.\ngs5556\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,284 posts\n09-13-2025 at 04:05am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYes, that's what I used. Be careful while pulling -- it can easily kink if you allow it to loop\nPost removed\nSep 13, 2025\nPost removed\nSep 14, 2025\ndevinplombier\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,714 posts\n09-14-2025 at 05:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAs explained by\n@jea48\nMC is the way to go here, esp if running more than one dedicated branch circuit to the listening room.\nI also find MC easier to work with than romex, but others may disagree.\nPost removed\nSep 16, 2025\nPost removed\nSep 16, 2025\ndevinplombier\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,714 posts\n09-16-2025 at 04:12pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nRoto tools may make it simple, but try to wield one of these puppies around while working on your back in a crawlspace or up on a ladder.\nAluminum armor pops pretty easily with a sharp bending motion. Always prep sharp edges to get them away from the conductors. And yes use the little red bushings too.\nMore to discover\nGood component video cables....?\nWhat mixes with Transparent Ultra Xl ...\nVDH cumulus 3T speaker cables\nStarter speaker cable for N804s and M...\nNeed Help Identifying Specific Discov...\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nRSX MUSIC SERVER RSX MUSIC SERVER\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Another Dedicated AC Line Cable Question","url":"https://forum.audiogon.com/discussions/another-dedicated-ac-line-cable-question"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n191101-188464\nEdit\nStack Audio Products Review\nAfter reading a number of rave reviews of the Stack Audio products I decided to try them and see if they could improve my system. Stack offers a 30 day money back guaranty and they even cover return shipping which is made very easy as they will email you a return Fedex Label.\nThey have several products:\nA Turntable Vibration Mat\nA Record Stabilizer Clamp\nA SmoothLAN Ethernet Filter\nComponent Isolators\nSpeaker Isolators\nI don\u2019t have a turntable so I did not order the first two items. Their unique patented isolation products absorb and isolate components and speakers by decoupling them from whatever they sit on and absorb any vibrations. The reviews for these products while not numerous have all been exceptionally positive so I was very much anticipating trying them in my system.\nThe first to arrive was the\nSmoothLan\n. This small rectangular box sits between your Internet access and your streamer. In my system I have a Wifi Extender connected to my EtherRegen Switch which is then connected to my Aurender N20 via a DH Labs Reunion EtherNet cable. I connected the SmoothLan between the switch and the Aurender. The SmoothLan includes a short quality EtherNet cable to use as a connector. Some have connected the SmoothLan before the switch but in general most do as I did. Some even have a SmoothLan on both sides of the switch.\nMy initial reaction was that the SmoothLan did in fact smooth the signal. It seemed to smooth the high end but in my system at the expense of high frequency extension and openness. It seems to take some of the atmosphere and air away. So I removed it for a while. After a day or so I tried it again with the same results. I think that it was most likely adding additional filtering that I don\u2019t need. The EtherRegen, the Reunion Cable and the Aurender all do an excellent job of cleaning up the Ethernet signal. So this product will likely be of benefit to those who do not have a quality switch, cable or streamer that are already cleaning up the signal. I contacted Stack and arranged for a return. They emailed me a label and I dropped it off at the local Fedex. BTW this product is about around $250.\nThe next to arrive was a set of four\nComponent Isolators\n. These approximately\u00a0 2\u201c diameter by 1\u201d high disks were more of a challenge to audition. I first placed them under the Aurender N20. I decided to placed them between the front and back Aurender feet on the sides. Some reviews said placement wasn\u2019t critical while others said toward the sides or front as best. Anyway in this position the sound was disappointing. The highs were suppressed but they were also refined. I really don\u2019t like anything that suppresses extension even if other parts of the response improve. I removed the Isolators from the Aurender and placed them under my MSB Discrete DAC. Here the sound was slightly better but still not to my liking. I next moved them to one of my DAC power supplies and found no difference than having them under the DAC. Finally I placed them under my Accuphase P4600 Amplifier. This gave me the best response so far. The highs were still not as open as I preferred but they were very refined and smooth and the bass improved. I kept them there until the next product arrived.\nNext up were the\nAUVA Speaker Isolators\n. I received two sets of four of there Model 50. They have 70\u2019s and 100\u2019s which offer more isolation at additional expense. I ordered them with felt pads as I don\u2019t like spikes and I planned to put them directly under my Harbeth C7ES-XD speakers which sit on Wharfdale Linton Stands. In this location with the Component Isolators still under the Amp strangely I found the overall sound to be somewhat brighter than I like. Bass was very good. Midrange was clear but the high end especially on strings was too bright. I then moved the Speaker Isolators from under the speakers to the bottom of the stand. I replaced the Linton stand\u2019s feet with the Speaker Isolators using the bolts I had ordered that specifically fit the Linton stands. Stack offers a variety of screw bolts. You just have to tell them what speaker or stand you have. I had not ordered the spikes so the stands and Isolators were sitting on the carpet. In this configuration the sound was less bright but still not to my liking. After listening for quite a while and missing that smoother high end extension I moved the Component Isolators from under the Amp to back under the Aurender to see how they would sound there now that I also had the Speaker Isolators. This time I placed the Component Isolators under the very corners of the Aurender. The Aurender feet are recessed about two inched so it was easy to place them on the corners. This gave me the best response so far. After another day I was still sensing that I was not getting that openness I craved so to make sure I was not imagining everything I removed the Speaker Isolators and the Component Isolators and yes there it was that openness and upper frequency extension returned. But funny thing is after listening for several hours I realized two things. I missed the upper end refinement the Isolators provided and the deeper bass they offered. Also I started to notice that even though I had more openness without the Isolators it was at the expense of refinement. Totally frustrated I was at a loss as to what to do. Then I remembered that I had never tried the Component Isolators thought maybe the Speaker Isolators under the stands without spikes may be compromising their performance. So after making this change the magic finally arrived.\nThe bass was solid, the midrange clear, warm and lifelike and the highs were both extended with air and openness but also refined. In addition the images seemed to be more defined in the soundstage and when I increase volume I can hear a slightly wider stereo image. Also because the sound is cleaner and more defined I can play tracks at about 1 or 2 db loader than normal without any problem. Phew! What a relief. Finally a configuration that worked. So I will be keeping both the Component and Speaker Isolators.\nI had also ordered an alternate isolation product to try: The Soundeck Mini MKII. These are flat circular thin metal disk absorbers. I ordered 8. So now I slid four under the feet of my MSB DAC. The effect was subtle but it slightly tightened and deepened the bass. At $13 per disk they are an economical way to quickly improve the sound. I tried putting the other set under my Amp and it was too much of a good thing. Similar to when I put the Component Isolators under the Amp it just dampened the upper frequencies. The Accuphase Amp has fairly large feet that are about 2\u201d in diameter and almost an inch high with large rubber type inserts so it may already be handling vibrations effectively and dose not need any more dampening. So I removed them.\nBTW the Component Isolators are under $300 for a set of four and the Speaker Isolators are around $500 for a set of eight. The Component Isolators come in three weight support sizes each priced the same. The Speaker Isolators come in three models: Good, Better, Best. Each with increasing isolation and control as the price increases. I ordered the Good one: Model AUVA 50.\nHope this is helpful to those interested in vibration control and component decoupling. T","title":"Stack Audio Products Review","url":"https://forum.audiogon.com/discussions/stack-audio-products-review"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195710-140796\nEdit\nLiving near transmission lines\nAnyone with hi-fi experience living very close to major transmission towers? (FM, UHF etc)\nI'm assuming they will cause issues when you are within a mile or so. How can they not couple RF to your lines and raise the noise floor and generally degrade your system..?? I once looked at moving to a nice house very close, just outside the exclusion zone. I'm glad I didn't.\nclustrocasual\n09-02-2025 10:10pm\n3 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nPost removed\nSep 03, 2025\nPost removed\nSep 13, 2025\nkennyc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,146 posts\n09-13-2025 at 11:29pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSafer than\u00a0Chernobyl\nMore to discover\n$5000 living room speakers for classi...\nLiving with unsolvable hum - Any audi...\nliving room as an Audio Laboratory\nLiving Stereo SACD Releases\nLiving room system: class A or AB amps?\nVolumio Primo Plus\nAyon Audio S-10IIxs\nAurender N100H\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Living near transmission lines","url":"https://forum.audiogon.com/discussions/living-near-transmission-lines"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195740-196882\nEdit\nsoundstage question: McIntosh Autoformers (MA8950) vs tube amps (chi-fi - sigh)\nA few months ago, I bought MA8950 to drive my Sonus faber Electra Amator III bookshelf speakers. I also have a separate chi-fi setup with $300 tube-amp (Class A SET, apparently) and Klipsch bookshelves.\nI'm trying to understand the science behind soundstage. In the same room, the tube-amp with Klipsch speakers seem to throw the sound all over the place while the McIntosh setup doesn't do that. The only other differing factor are the cables and speaker wire.\nMy guess is, one of the two are true:\nA. Klipsch are a more revealing speaker (8ohm and 96dB) while the Sf aren't (4 ohm and 88dB)\nB. The tube amp is doing its magic\nA means that the output stage in relation to the room is everything\nB means that the McIntosh autoformers are likely \"suppressing\" something\nI didn't dare hook up the tube amp to the Sf speakers; idk what would happen to the speakers.\nNow I think it's A. But if someone thinks it is B - then I'm curious. What exactly is happening with the autoformers that might be causing this?\nThank you.\nnathandfwacoustics\n09-06-2025  7:16am\n9 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\noddiofyl\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,644 posts\n09-06-2025 at 12:10pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy Dad has the same amp and speakers.\u00a0 \u00a0I have a pair of Forte IV and a few different tube amps.\nHis system has great detail , very dynamic , it sounds great.\u00a0 \u00a0 My system sounds great too, it's just a different presentation.\u00a0 \u00a0He has a REL s/510 that really adds depth and impact.\nMy 300b and those Forte are more to my liking,\u00a0 I don't play it very loud so 7 watts goes a long way.\u00a0 \u00a0His set up is more detailed but doesn't sound live like mine does.\nI believe your ears and brain are tricking you...\u00a0 \u00a0the dispersion pattern\u00a0 of the Klipsch coupled with the second order distortion of the tube amp \"sounds better\"\u00a0 but I think you would get tired of that combo after a while.\nAre you driving the speakers off the 8950's\u00a0 \u00a04 Ohm taps?\noddiofyl\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,644 posts\n09-06-2025 at 12:12pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt's unlikely that amp can safely drive the SF , they are four Ohms and are known to be difficult to drive.\n052rc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n78 posts\n09-06-2025 at 01:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI wouldn't assume A or B are the only choices.\n\"Now I think it's A. But if someone thinks it is B - then I'm curious. What exactly is happening with the autoformers that might be causing this?\"\nWhy would you assume the autoformers are responsible for the differences you are hearing? The 2 amps are extremely different from each other, as are the speakers. Also, your tube amp has output transformers. They're not the same as autoformers, but they do perform a similar function. Either way, I don't think the differences you are hearing are caused by the autoformers. I understand why you don't want to try the set amp on the SF's, but you can try both amps with the Klipsch.\n\"In the same room, the tube-amp with Klipsch speakers seem to throw the sound all over the place while the McIntosh setup doesn't do that.\"\nYou need to try a couple of things. To start with, listen to the Klipsch/set setup. Play a song where the singer has a strong center image between the 2 speakers. When you listen, confirm that the vocals are where they should be. You could have made a mistake when connecting your speaker cables. It happens all the time. If the vocals are not between the 2 speakers, that's the problem. It will sound like the vocals are coming from one of the side walls. \"Throwing sound all over the place\", is a pretty good description of what that sounds like.\nIf your connections are OK and you are getting vocals between the speakers as they should be, listen to both setups again. This time you are listening for scale. Using that same test track, or something similar, are the sizes of the images bigger on the set? For example, does it sound like the singer is much larger on the tube amp? The difference won't be subtle. You will hear it immediately.\nnathandfwacoustics\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23 posts\n09-06-2025 at 04:10pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@052rc\n- it could very well be more than A & B.\nThe \"all over the place\" comment was a lazy way to say that separation of instruments and/or soundstage -- was spread out very nicely. It wasn't sporadic/random. It was great. I experimented with friends' amps - Yamaha and Linn (likely 10-year old models) and with the Sf speaker only. While the MA8950 sounded really really good (great, I mean), it *still* was a tiny bit \"subdued\" compared to the other two amps. Linn was Class D. Yamaha - I can't remember. It could have been A/B. Now on the MA8950, when I hit 40-45% of the volume (gain? idk. I get confused), the music is definitely better - but now we're just experiencing louder volume and not necessarily the soundstage that I got out of the \"low-watt + high-efficiency speaker\" combo.\nAnd there's tons of stuff out there about the McIntosh autoformer-sound but nothing necessarily tying it to soundstage. perhaps it isn't a contributor to soundstage: soundstage is all about the output stage -- speakers + room. But I can't help but compare the experience with the other amps. I'm not saying they had a *great* soundstage but were definitely not \"subdued\" like the MA8950.\nI'd been stubborn about getting this soundstage via the Sf speakers but now you've given me an idea: to hook up the MA890 with the Klipsch to see if there's any impact to soundstage and the dispersion of sound.\n@oddiofyl\n- did you just say that you prefer your \"tube amp + Klipsch speaker\" combo to the MA8950 + Sf combo and yet, when I have the same preference, my brain is playing tricks with me?\noldrooney\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n268 posts\n09-07-2025 at 12:13am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@nathandfwacoustics\nI can vouch for the subdued aspect of solid-state McIntosh amps versus class D amps, although I would rate them on par with the tube amp I own. I toted two (2) MC252 solid state autoformer equipped power amps upstairs and connected them to my McIntosh XRT-20 speakers. Strapped to deliver up to 500 watts to each speaker. But compared to the sound of an entry-level Sony AVR (STR-AN1000), using the same sources, and the same speakers, there was an obvious mismatch. The Sony was much clearer, and even though it was rated at only 120 watts to each speaker in stereo mode (100 watts each to the front speakers in multichannel mode). The extra power of the strapped MC252s did provide better dynamics for high and low \u2018excursions,\u2019 the clear day-to-day dialog and standard TV-type / movie accompaniment winner was the Sony amp. It wasn\u2019t even close.\nDownstairs, the mono-strapped MC252s and C100 controller sounded on a par with the Rogue Audio Stereo 100 (with the dark upgrade) driven by a Rogue RP9 preamp powering the same B&W 801s2 speakers. In my experience, you are correct to attribute \u2018sound stage\u2019 to the interplay between the speakers and the r","title":"soundstage question: McIntosh Autoformers (MA8950) vs tube amps (chi-fi - sigh)","url":"https://forum.audiogon.com/discussions/soundstage-question-mcintosh-autoformers-ma8950-vs-tube-amps-chi-fi"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195695-520\nEdit\nAre driver tubes as critical as gain stage tubes?\nIn an amplifier, do driver tubes need to be matched, balanced, like new, or quiet?\u00a0 For example, is noise as important in a driver tube as it usually is in a gain stage tube?\u00a0 If you must allocate resources among various tubes in an amp, where are the driver tubes in the heirarchy?\nlloydc\n08-31-2025  8:07pm\n4 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nbillstevenson\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,319 posts\n08-31-2025 at 09:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFor me all tubes are equally important.\u00a0 I have actually had more headaches with the voltage tubes (drivers) than with amperage tubes (the big gain tubes).\nbuellrider97\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,066 posts\n08-31-2025 at 09:54pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFor me it depends on the actual application for that particular driver tube. So do I need trace matched or not , depends on the application. Recently I\u2019ve been tube rolling with the 12AX7 phase tube that feeds the two 12AU7\u2019s in my mono blocks. What I\u2019m finding there is I\u2019m better of going to a lower mu substitute which lowers the noise floor of the amp. Although my pre has five gain settings in addition to the actual volume control , the lower mu tubes ( 12AT7, 12AY7 ) make a noticeable difference. Cheers , Mike B.\nserblinfan\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n59 posts\n09-01-2025 at 04:19pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNormally, they shouldn't matter match, but it depends on how advanced and \"finished\" your system is. If your system is advanced and if you have spent lots of money on it to make it sound nice, even driver tubes will matter much. Otherwise you should be OK :-)\nlloydc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n779 posts\n09-13-2025 at 12:31am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks!\nMore to discover\nAnyone heard the Don Sachs Custom Tub...\nThinking out loud: solid state Linest...\nOptimal Phono Stage Output?\nBest balanced linestage/preamp for $4...\nintegrated amp with a strong phono st...\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAuralic Aries G2.1\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Are driver tubes as critical as gain stage tubes?","url":"https://forum.audiogon.com/discussions/are-driver-tubes-as-critical-as-gain-stage-tubes"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195699-201736\nEdit\nSuggested upgrade paths\nSo, I am looking at spending 5k to improve the sound of my very modest system. I currently have a Rotel 1592. Being fed by an Eversolo DMP A6. I\u2019m using the Rotel DAC, as I didn\u2019t like the ESS DAC. This feeds a pair of Wharfedale Super Lintons.\nWhile it sounds ok with the volume at 60-65. If I want it louder, the treble is shrill to my ears and the bass not as clear/punchy as I prefer. I run the bass at +3. I am considering purchasing a subwoofer, along with a DAC/DDC.\nThe room is roughly 450 sq ft with 10\u2019-12\u2019 coved ceiling. Looking for upgrade path suggestions for the mentioned 5k investment. Thanks in advance.\nnucleardog61\n08-31-2025 10:50pm\n45 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ngkelly\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,124 posts\n08-31-2025 at 11:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDefinitely a subwoofer/s would be in order.\nhttps://rel.net/products/classic-98?variant=50204774039768\nNo mention of acoustic treatments. Definitely look into it. Remember having a similar experience with turning up the volume. After installing 12, 2\u2019 by 4\u2019 703 owin/corning rigid fiberglass panels, life became easier on the ears \ud83d\udc42.\nnucleardog61\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n13 posts\n08-31-2025 at 11:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThis stereo is in the living room. The wife wont want room treatments. I brought it up. The Rel Classic 98/99 is on my radar. Had also thought of a tube pre-amp.\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n250 posts\n08-31-2025 at 11:37pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nthe treble is shrill\nThe quickest and easiest route would be to replace the speakers.\nAdding a Sub would improve the bass, but it may make the treble more shrill.\nIf you dont want to replace the speakers, you may be able to improve the treble with either a tubed preamp, or a tubed dac, but there is no certainty there will be an improvement\nPost removed\nAug 31, 2025\ngoldenways\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n125 posts\n08-31-2025 at 11:49pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n\"shrill\"\nI'd nail down the source before I made any move.\ngkelly\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,124 posts\n09-01-2025 at 12:04am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt\u2019s all a compromise. Show her this.\nhttps://www.gikacoustics.com/product-category/acoustic-art-panels/\ndon't forget about these\nhttps://cityshadecompany.com/products/atacama?srsltid=AfmBOorDejll2y8m5tjlROi3p-DdhoLGJl_60WB05CyZ-TSjPNBR54oV\nnucleardog61\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n13 posts\n09-01-2025 at 12:13am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe treble shrillness isn\u2019t present at lower volumes. I was thinking it was a combination of the Rotel, Eversolo and Wharfedales all when at higher volumes. When using the Eversolo internal DAC, it was more pronounced.\nWasn\u2019t sure if using a R2R DAC with a DDC would help tame it or if a tubed pre-amp might be a better solution. Using a sub i thought i could listen at a lower volume.\ngoldenways\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n125 posts\n09-01-2025 at 12:14am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nJust thought about my statement. If it's not the room, you're\u00a0going to find the source by starting to change out the equipment.\n@pmm\nis most likely right. i had Klipschs Heresy IV, and\u00a0I found the highs were\nfatiguing. After about an hour, that was enough listening. I was relieved when I sold them.\nnucleardog61\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n13 posts\n09-01-2025 at 12:23am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n. The Wharfedales I had thought of replacing. Im happy with them at lower volumes. Not so much of a fan of the tweeter. The Rotel can be neutral to bright. Depending on what music is played. Any recommendations on replacement speakers? I like a warm sound. It may be a combination of everything and may require an extended budget, over a series of years.I would like to stay within a 5k budget for now.\ngoldenways\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n125 posts\n09-01-2025 at 02:03am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nUsed Harbeth Super HL5+ XD. Be careful on model number easy to mess up for they has updated over the years. $5k plus or minus. Audiogon, The Music Room and US Audio Mart has them. \u00a0I bought a used pair of Rosewood and I\u2019m very happy with them.\nThey are called \u201cBookshelf\u201d speakers. I do not no of any bookshelf that is large enough for the Harbeths to fit.\nNote: The Ton Trager Stands are not California certified. Just joking but they will not hold up to some earthquakes.\njasonbourne71\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,904 posts\n09-01-2025 at 02:55am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBuy a better pair of speakers! Go to ASR (Audio Science Review) and check out the reviews.\nfthompson251\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n775 posts\n09-01-2025 at 11:52am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou will always eventually need a better DAC. IMHO all internal DACs are a compromise in lower end components.\u00a0 Bite the bullet and check out a Denafrips Venus 15th. I am sure it will smooth things out. Start at your source and work your way out. @audioman58 sells them for a discount.\u00a0 Run the A6 into it. Get a good quality USB cable too. Next consider speaker upgrade down the road. Good luck.\ntravelinjack\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n303 posts\n09-01-2025 at 01:49pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'd be looking at the Mofi 888 or maybe the Kef R7 Meta.\nzlone\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,431 posts\n09-01-2025 at 01:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI am not familiar with these speakers, and I am sure they are part of the problem. However, there is a good chance that updating the amplification, in particular the preamp, will remove what might be distortion/noise at higher volumes, and give you \u00a0improved bass definition. I went through this with my NAD integrated, which luckily allowed me to bypass the pre, and try an outboard pre. It made a big difference.\ntriton20trx\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n86 posts\n09-01-2025 at 02:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFor $4200 you can have Totem Twin Bison Towers.\nI love them. They will play anything and deliver a soundstage such you hear music not the speakers, they disappear. Best value out there for a premium speaker\nsls883\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,084 posts\n09-01-2025 at 02:40pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou've posted under \"what's playing on your turntable\".\u00a0 Do you have the same issues with bass and sibilance with vinyl?\nmdalton\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n829 posts\n09-01-2025 at 04:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nif not mistaken, tweeters on those speakers are not exactly in the center. \u00a0Maybe swap left speaker to right, and vice versa, just to see if that makes any difference first.\ngoldenways\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n125 posts\n09-","title":"Suggested upgrade paths","url":"https://forum.audiogon.com/discussions/suggested-upgrade-paths"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195696-102456\nEdit\nAmazon Prime ads making the site un-usable.\nMassive Pop-up, every 10 seconds, aggressively takes over the screen.\ngemoody\n08-31-2025  9:26pm\n12 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nbuellrider97\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,066 posts\n08-31-2025 at 09:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI feel your pain, Admin knows. I installed \u201c 1Blocker \u201c on my IPhone. Just turned on the basic ad block setting , works great. FYI I had the same issue on US Audiomart. Cheers , Mike B.\ngoleksiak\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n84 posts\n09-01-2025 at 01:23am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019ve never seen a popup on here...I'm using Brave browser on Mac...\ntweakmenow\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n38 posts\n09-01-2025 at 04:14am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nComputer users:\u00a0 \u00a0Brave browser is good.\nTurning off javascript on ANY browser, will also do the trick.\neltonjohndenver\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n18 posts\n09-01-2025 at 02:22pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHad the same problem. Try AdBlock Pro. Seems to be working for me\njayctoy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,659 posts\n09-01-2025 at 02:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSame here\nm2team00\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n35 posts\n09-01-2025 at 03:05pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019m using Duck Duck Go and no ad issue here, but the site is molasses slow!\njudsauce\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n180 posts\n09-02-2025 at 02:03am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have an Android with updated software and I get pop-ups every 6 seconds.\nDriving me nuts.\nmapman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23,710 posts\n09-02-2025 at 02:09am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYes it\u2019s pretty bad.\ntcutter\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n451 posts\n09-06-2025 at 11:18am\nCopy Comment URL\nReport Comment\nEdit\nDelete\niOS 18.6.2. Adblock plus does nothing. Misery\nPost removed\nSep 06, 2025\ntomtee\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6 posts\n09-06-2025 at 12:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI use Opera browser.\u00a0 It has a built in ad blocker.\u00a0 For ads that get past the ad blocker I installed the Ghostery browser extension.\u00a0 All in all this stops 99% of annoying online ads.\nrpw357\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10 posts\n09-07-2025 at 05:37pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBest Buy, Lands End, Audio Advice, Spectrum, Norton, ebay, Amazon, Walgreens, ETrade, St. Jude...ond on and on and on and...make it stop!!!!\u00a0 What has changed?\u00a0 Was never a deluge like this before\nMore to discover\nMaking it sing.....\nTechnics turntable making a mechanica...\nMaking a difficult decision\nHas anyone tried making their own int...\nmaking power from kt120 tubes\nAyon Audio S-10IIxs\nAntipodes Audio K40\nBricasti M5\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Amazon Prime ads making the site un-usable.","url":"https://forum.audiogon.com/discussions/amazon-prime-ads-making-the-site-un-usable"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195714-78103\nEdit\nWell this link will start many arguments!\nI agree with most these. \u00a0I\u2019ve argued with a lot of these.\nhttps://www.headphonesty.com/2025/08/most-annoying-audio-myths-voted-thousands-audiophiles/\nlet the arguments begin\npolkalover\n09-03-2025  6:15pm\n37 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ncleeds\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,635 posts\n09-03-2025 at 06:40pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nheadphonesty=clickbait. It\u2019s so-ooooo obvious.\nllg98ljk\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n333 posts\n09-03-2025 at 07:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAfter reading it, I don't see a whole lot to argue about. There aren't any hard black or white issues presented. I do agree that most issues when people are comparing different components boil down to level matching.\nThere is so much hype in the audio industry that a lot of components appear because someone invents a new \"problem\" and that presents a mega dollar fix for it. As long as audio is a hobby to you, spend your money as you see fit and enjoy the music. OTOH, obsession can lead to a host of woe's.\nntpc4\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n45 posts\n09-03-2025 at 07:45pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nLoved it. Thank you for sharing.\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n09-03-2025 at 09:22pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNothing to argue about unadulterated BS.\npolkalover\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n179 posts\n09-03-2025 at 09:50pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@ghdprentice - I agree most of these listed call out the placebo effect. \u00a0The gear does change our perception does. \u00a0We are the break in. \u00a0I\u2019m guilty of it .\nlarsman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,218 posts\n09-03-2025 at 10:13pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIs this the five minute argument?\ngbwills\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2 posts\n09-03-2025 at 10:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWho cares, as long as you are enjoying the hobby.\nmapman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23,710 posts\n09-04-2025 at 01:22am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMake love not war.\njperry\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,542 posts\n09-04-2025 at 01:44am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nA lot of baloney in one clickbait article. Not much to discuss.\nceltic66\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,974 posts\n09-04-2025 at 02:18am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@larsman\nis on it! \u00a0Yes, the 5 minute argument.\nhttps://www.youtube.com/watch?v=uLlv_aZjHXc\ntutonunez\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n19 posts\n09-04-2025 at 02:19am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nghdprentice\naewarren\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n794 posts\n09-04-2025 at 04:04am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe only argument I see here is whether or not this article will start any arguments. You say yes, I say no.\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n375 posts\n09-04-2025 at 09:47am\nCopy Comment URL\nReport Comment\nEdit\nDelete\ni dont like the bitchy, dishonest clickbait of headphonesty.\nmotown-l\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n384 posts\n09-04-2025 at 01:48pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf I had the budget for a reference level system, I would probably buy a lot of the items listed as BS in the article. Since I can\u2019t afford a system at that level, I content myself with slightly elevated cable quality. I doubt I would hear the difference between my $40 demo Audioquest RCA\u2019s and their four figure interconnects on my humble system.\nkatzenjammer27\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n150 posts\n09-04-2025 at 02:46pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\njust ripped the bandaid off, ordered the LTA Aero with the stock tubes. Now what was this thing about arguing? I'm numb...\nlarsman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,218 posts\n09-04-2025 at 02:54pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@katzenjammer27\n- I just got my LTA microZOTL last week - enjoy yer Aero!\nkatzenjammer27\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n150 posts\n09-04-2025 at 03:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@larsman - now I have to wait 4 weeks...they do a week of burn in, like this company.\nbbarten\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n97 posts\n09-04-2025 at 05:10pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe most interesting thing is how we could all predict what the responses would look like and be very accurate.\u00a0 he he...there are plenty of great philosophical comments and so I won't add one.\u00a0 I agree with everyone!\u00a0 Because how they see it is what makes it what it is to them.\u00a0 Sorry...maybe a little philo.\ntooblue\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,112 posts\n09-04-2025 at 05:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@larsman\nThank you, I love everything Python. Enjoy the music\nwsrrsw\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,511 posts\n09-04-2025 at 06:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@larsman\nReally enjoyed seeing that again. Thanks\nartistx\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17 posts\n09-04-2025 at 06:26pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@celtic66\n@larsman\nNever seen that Monty Python sketch. Thanks for sharing. \ud83d\ude02\nmapman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23,710 posts\n09-04-2025 at 08:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWell if nothing else following those recommendations will likely save one a lot of money and great results still very possible if done wisely. \u00a0So there is that. Not trivial by any stretch! Some vendors here among us will surely object however. Surely some hardcore non vendor types as well.\nbillpete\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n396 posts\n09-04-2025 at 10:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nLove the old Python sketch.\nroadcykler\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n360 posts\n09-05-2025 at 01:30am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt's pretty obvious by the responses which people are the \"I know what I hear\" sect. Little Mikey Fremer once called objective, rational people, \"science based know-nothings\". Seems rather like a religion...\noberoniaomnia\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n408 posts\n09-05-2025 at 01:38pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe article is correct about everything, IMHO. Placebo effect, habituation, and Concorde fallacy all apply. Nothing wrong with spending money on what makes you happy, but in the case of audio, couch time with a shrink may be cheaper for once.\nJust to be clear, I have tried cables, never heard a difference. I prefer vinyl, but mainly for the artwork and nostalgia. I have a class A amp, but for the particular implementation (Pass) rather than for being class A. I have a $5K ladder DAC, but it is not clearly \"better\" than a $250 \u0394\ud835\udeba.\nMQA, cable lifters","title":"Well this link will start many arguments!","url":"https://forum.audiogon.com/discussions/well-this-link-will-start-many-arguments"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195734-85419\nEdit\nNordost QB8 - Best Power Conditioner with Surge Protection to Add?\nI own a Nordost QB8 AC distribution unit. Yes, it basically aims to optimize ground paths and reduce electrical noise. The Q8 is not a power conditioner with surge protection.\u00a0 Please what high-quality even 'audiophile' surge suppressor would you consider between the wall outlet and the QB8?\u00a0 Thank you! :-)\nvinylfun\n09-05-2025  8:18pm\n1 response\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ngkelly\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,124 posts\n09-06-2025 at 04:58am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou could get an electrician and have them install a breaker box surge suppressor.\nhttps://us.wiautomation.com/schneider-electric/drives-motors-circuits-protection/A9DE3640?utm_source=google&utm_medium=cpc&utm_campaign=US_pmax_new_insert_2&gad_source=1&gad_campaignid=17191255625&gbraid=0AAAAAC2XDKDKqBmE6gwk5TUdTaqK815gW&gclid=CjwKCAjwlOrFBhBaEiwAw4bYDX2Nq1yRnzR_2sISn2Wt25A2pibmb1hkxPsOKjMa4j26FY81mfqfYBoCxKAQAvD_BwE\na cheaper and possibly a DIY because an electrician will not install this because of regulations. All new outlets have to have the plastic protection tabs on the slots.\nhttps://www.crutchfield.com/S-n4u2ocjLQjT/p_299MXINWLL/Panamax-MIW-SURGE-1G.html?XVINQ=GZ0&XVVer=NEE&awcr=628327415194&awdv=m&awnw=g&awug=9033780&awkw=pla-1835409326298&awmt=&awat=pla&gad_source=1&gad_campaignid=18596593409&gclid=CjwKCAjwlOrFBhBaEiwAw4bYDUhEK9RFl-WLaNBFmXzE6-YJ-Lbhl-hRIRoXTxD1erysikuB92sV_RoCwq0QAvD_BwE\nMore to discover\nExact Power SP15A provide surge/spike...\nACURUS A 125 Amp Speaker protection q...\nAdcom Amplifier Speaker Protection\nReasonably priced power protection?\nRefund/Consumer protection in the USA\nAuralic Aries G2.1\nAurender N10\nFocal 36 MONTH FINANCING\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Nordost QB8 - Best Power Conditioner with Surge Protection to Add?","url":"https://forum.audiogon.com/discussions/nordost-qb8-best-power-conditioner-with-surge-protection-to-add"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195244-23267\nEdit\nUnbalanced to Balanced Converter Circuit with 0dB Gain\nI have created an unbalanced to balanced converter using a Jensen transformer -\u00a0JT-11P-1. The circuit was designed by Jensen Transformers. It is the right hand circuit in the Jensen AS060 drawing, which is available online.\nI assembled it into a Hammond enclosure.\nPerformance is as I expected.\u00a0 It reduced my already low 60, 120, 180 Hz noise peaks by an additional 10dB. These peaks now are at 90dBV, which is exemplary for my SP-6B (AR refurbed) tube preamp of early 80s vintage. My normal signal level (music) is about -10dBV, highly variable of course. Baseline RMS noise is unaffected as this noise is stochastic (random).\nThere is a 2.7 dB insertion loss (0.73x). The XLR output is fully balanced with pins 2 and 3 equal in magnitude but 180 deg apart.\nThis circuit is notable as it does not increase the signal. Commercially available converters of this type are usually -10dBV (unbal) to +4dBr (XLR), which is a \"gain\" of 4 (12 dB). I can't tolerate this high a signal as the SP-6B gain is already a bit high for my system at the optimum 12 o'clock position on the volume knob. One can obtain a converter box with gain. This uses an active transistor or opamp circiut for gain. The box I made is passive all the way.\nThe frequency response is very flat from 20-20KHz, with only a 2dB drop between 19 and 20 KHz.\nThe transformers are a bit expensive - $120 each. Resistors, box and panel mounts are inexpensive. I believe I paid about $300 for everything.\nAssembly is quite straightforward and not difficult if you can solder.\nFinally, I should point out that my system did not suffer badly from noise problems before I added this circuit, even though I use a mix of RCA and XLR cables. I've been careful to connect all components into the same wall plug. I made sure all components are grounded properly. The box I made had a -10dB effect on the signal. I expect noisier systems will see more reduction\nkevemaher\n07-24-2025  9:46pm\n14 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nspatialking\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n704 posts\n08-15-2025 at 08:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNice!\u00a0 Thanks for the info!\u00a0 I am thinking of doing something similar to my system as well.\nkevemaher\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n436 posts\n08-15-2025 at 09:06pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGreat! It is a nice project.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n08-15-2025 at 10:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nUm ....\ncleeds\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,635 posts\n08-15-2025 at 11:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGiven that the OP's ARC 6B preamp is unbalanced, it isn't clear just what's happening here. How can your system be \"a mix of RCA and XLR cables,\"\n@kevemaher\n? Is it just that you're running balanced now from preamp to amp??\nkevemaher\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n436 posts\n08-16-2025 at 12:46am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@cleeds\nInputs to SP-6B include two phono cartridges (both SE) and\u00a0 Marantz SACD 30n (SE). NO streaming.\nEach cartridge inputs to an individual SE SUT. Each SUT output (SE) goes to a switchbox (SE all the way). Cartridge is selected and output goes to a Rumble filter which is SE. That output (SE) goes to the SP-6B phono input (SE).\nThe SACD30n output (SE) goes directly to an AUX input on the SP-6B (SE).\nA Fosi P4 acts as volume control for the SP-6B. I use the tape loop on the SP-6B (all SE).\nThe SP-6 output is SE. I convert to XLR by taking this SE out and converting to XLR in my box. Box XLR output is input to my GEQ (analog) which uses XLR at both input and output. The EQ output (XLR) goes to the power amp input..\nSo, there's the mix.\nSE into, in between, and out of the SP-6B, XLR the rest of the way.\nClear?\nPost removed\nAug 16, 2025\ncleeds\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,635 posts\n08-16-2025 at 06:46am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYes, that's sorta clear\n@kevemaher\n, thanks. It is odd that you have the Fosi in your tape loop for volume control, which is where an EQ would more typically be placed. But it works for you!\nkevemaher\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n436 posts\n08-17-2025 at 02:27am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@cleeds\nBoth the EQ and the Fosi P4 could be used in series in the tape loop. I would have done that, but the dBx EQ I have is BAL in and out, no other options. To put the EQ and P4 in series does not make much sense to me as it requires conversion from SE to BAL and BAL to SE, several places where things could go wrong, especially ground loops.\nI would still have to use the SE to BAL box i built. What I have is simpler and uses less parts, in my opinion anyway.\nI am interested in going BAL in my phono sections, but am still daunted by all the changes I would need to do.\npindac\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,236 posts\n08-17-2025 at 09:54am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@kevemaher\nIt is interesting to see a design put in place that is seemingly similar to something I have had put in place early in 2025.\nI have had a circuit change made to my 845 Monoblocks that has now got them performing in a Balanced Design, which I believe shares similarities to your own design.\nThe conversion in my own estimation was not overly expensive and the End Sound produced was to my perception much improved, I could detect the increase in quietness, which certainly had a discernible impact on how very well known tracks were presenting the embedded data on both Vinyl and CD.\nThe End Sound also made such an impression that a well established design to be a Commission Build to produce a Mono Block Pre Amp' design. Which has been\u00a0 selected to be used a long time ago and where most parts are purchased is now superseded as a design / build.\nThe impression left by the new experience of the Power Amp's has been the influence on a new design for a Mono Block Pre Amp.\nA New Pre Amp' is now designed and is at the place where all components are now purchased and Bespoke Built Stepped Attenuators for the earlier build are to be reassigned to this build.\nThis design is also produced as a Commission Build, which is purposely designed to enable the Power Amp's to receive a signal (current - gain ) that is optimised to work with them.\nA Prototype of this Pre Amp as the SS section only, has proved itself in use to be able to produce an End Sound that is very very attractive. Especially when used in comparison to other owned / loaned Pre Amp's able to be used, which as Pre Amp's used prior to and after the Balanced conversion were always very well thought of.\nI too have been expressing an interest in having a Balanced design for the Analogue and Digital Sources. I'm keen to learn more on the variety of methods that can be used to produce this.\nFor myself in relation to one Phonostage I am thinking of purchasing a second model?\nfunnychap\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n32 posts\n08-31-2025 at 03:07am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nEasier to j","title":"Unbalanced to Balanced Converter Circuit with 0dB Gain","url":"https://forum.audiogon.com/discussions/unbalanced-to-balanced-converter-circuit-with-0db-gain"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195311-40\nEdit\nWhat do you care about in this hobby?\nIs it:\nsound quality only\ncost\nvalue\nmeasurements\nquality of parts\noverall design\naesthetics\nservice and support\nAll of the above for me. \u00a0How about you?\nThanks.\nmapman\n07-30-2025  4:32pm\nNext \u203a\nLast \u00bb\n62 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n07-30-2025 at 04:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n1) Sound Quality is top.\nBut I without the factors below, it\u2019s not going to get purchased.\n2) cost commiserate with sound quality\n3) absolute reliability - decades without failure\n4) top quality build\n5) \u00a0good aesthetics\n6) finally while I should never need it, but service and support.\ndtorc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n132 posts\n07-30-2025 at 05:34pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFor me, Sound Quality matters the most by a long shot. And within the category of \"sound quality\" some things\nreally\nmatter, foremost the tonal quality of the instruments and voices. I care that they feel like they have body and color and a certain thickness to them. Lean but accurate would not make me happy.\nI want a nice, simple soundstage where instruments live on the horizontal plane in some realistic way (I know the mix of the album controls this to a great degree, but if it is there, I'd like to hear it). I don't care about \"3-D\" imaging, holographic this or that. I find that distracting, and not musical.\nI don't need components to be silent - I need them to present the music. Tape hiss is okay, and if my tube phono section has a little noise at higher volumes, that is okay with me.\nAfter sound quality,\nReliability\nmatters to me - I don't want my system down too many days. And I need a manufacturer who communicates well, since I am not very astute when it comes to the technical parts of the endeavor.\nAnd after that, I want gear that lets me participate, in at least a little way, in how it sounds. I want to customize it,\na little\n. So, I want tube gear so I can try different tubes to get that sound quality I mention above. I like analog gear that lets me try new cartridges, and new settings such as VTA and azimuth. I like setting up a new aerial for my ancient tuner. But I am incompetent at soldering or even reading electrical diagrams, so only a little participation, please.\nI am blessed with my own listening room, so how it looks doesn't matter very much to me.\nAnd I love that others have very different audio values. I have a friend who lives and dies by how his system images. And it\nremarkable, and I am happy that it makes him happy, and I share my admiration for how carefully he has set it up. The fact that I don't need or want the same is almost irrelevant.\nDavid\nkofibaffour\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n726 posts\n07-30-2025 at 05:40pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nEducating myself about everything physics of sound\nEnjoying my media on my system whilst leaving room for discovery.\nI\u2019ve achieved the second one fully and I\u2019m now reasonably knowledgeable in the first but still far from even being an amateur acoustician\nBasically, all the above\nmulveling\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,475 posts\n07-30-2025 at 06:06pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSound quality first, aesthetics 2nd. Value only matters to me when 1. I can\u2019t afford it anymore, and 2. clearcut cases of\u00a0misplaced expense - i.e. obnoxiously bad engineering / design; ostentatious chassis; misguided product philosophy.\nThe others categories matter to me about ZERO. Measurements can be a curiosity & fun read, but I treat them largely as a separate pursuit, with little overlap to listening.\nFor service and support - keep in mind so many hifi companies are \"1-man shows\", or close to it. Usually, the proprietor is OLD. What do you think the landscape is going to look like in 10+ years? The only service & support you can count on is having gear with\u00a0(mostly) replaceable parts that can be reasonably worked on by other technicians. That, and get some spares for the parts that are hard to replace (drivers). You DEFINITELY want your key components to be known to known reliable units. I know my Tannoys are tough as nails because I've had several \"oopsie\" momemts with them over 15+ years, and they've come out unscathed.\ngdaddy1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n549 posts\n07-30-2025 at 06:43pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe Mystery. It's what keeps me interested.\nThe physics is known but perception is not.\nlarsman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,218 posts\n07-30-2025 at 06:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@mapman\n- how are all 8 of them for you if the first one is 'Sound Quality Only'?\nIf we remove the 'Only' from that, for me, it would be 'Sound Quality', 'Overall Design', and 'Aesthetics'. The others come into play as well to some extent except for 'Measurements'; don't care much about those besides seeing what will drive what.\nknotscott\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,430 posts\n07-30-2025 at 07:26pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nEnjoyment.....\n....which happens to put sound quality on a budget at a premium.\u00a0 WAF and pleasing aesthetics never hurt.\ntoro3\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n525 posts\n07-30-2025 at 08:27pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSQ and aesthetics.\nI have an open area where my 2-channels is located. For various reasons I\u2019ve really tried to integrate the system into living space so that it doesn\u2019t bring too much attention to itself.\nFor me, it\u2019s more than just the components, but the way in which the system contributes and interacts with the living space both acoustically and aesthetically during the day and especially in the evening.\nService/support and value (used market) should probably be much higher if I were to be completely transparent with myself, though. And enjoyment per knotscott. Enjoyment would definitely take the cake if it were one of your options. Otherwise why bother?\nmattmiller\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,620 posts\n07-30-2025 at 08:48pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt was always about the MUSIC first, then the desire to have that music in a room playing as if the group was there in front of me. I grew up around a lot of stereos of all prices, so much of it wound up needing repairs after a few short years of use, RELIABILITY became paramount for me. I only use McIntosh amplifiers and I sleep very well.\nMatt M\nmrdecibel\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,321 posts\n07-30-2025 at 08:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe ability to listen to my favorite musicians, over and over again, to those performances that draw me in. Many of these musicians are gone, but the recordings allow them to live on, to my ears, and lately, to my eyes (posted recently, under music, watching a lot of YT). I use top quality ss, as I want reliability, consistency and sustainability. My best, MrD.\nslaw\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n26,979 posts\n07-30-2025 at 09:07pm\nCopy Comment URL\nRepor","title":"What do you care about in this hobby?","url":"https://forum.audiogon.com/discussions/what-do-you-care-about-in-this-hobby"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195645-40\nEdit\nFlat Response?  Yes and No.\nThis guy is good!\nhttps://youtu.be/_tnWB8Rl0Ms?si=9ZZSopAXxuXMD3ou\nSubtle endorsement of omni speakers towards the end.\nmapman\n08-26-2025  7:14pm\n1 response\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nceltic66\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,974 posts\n09-02-2025 at 02:47am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNot really an epiphany here, however he is correct addressing the direct affect of room acoustics on the overall aural picture. \u00a0It speaks indirectly to why a legend such as the Rogers LS3/5A was so loved, yet so far from flat response it's silly. \u00a0The speaker just sounds musical and has been loved for decades. \u00a0Period.\nMore to discover\nNeed power amp suggestions for ProAc ...\nProAc line: Studio vs. Response\nIn Room Frequency Response Measurements\nHow much freq. response is necessary ...\nDoes treble response beyond my hearin...\nAurender N100H\nAyon Audio S-10IIxs\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Flat Response?  Yes and No.","url":"https://forum.audiogon.com/discussions/flat-response-yes-and-no"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n185428-104624\nEdit\nsbooster compatible with Lumin T3?\nAnyone successfully add an sbooster to a Lumin T3? I recently purchased one from Upscale and they said the sbooster is compatible with the T3, but I\u2019m not able to access the Lumin internally. The instructions are for a T2 and the cover doesn\u2019t come off the same as the T3. Thanks, Todd\ntntmcdade\n07-09-2023  8:36pm\n3 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\njjss49\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,943 posts\n07-10-2023 at 01:36am\nCopy Comment URL\nReport Comment\nEdit\nDelete\ni don\u2019t understand your question and your concern\nupscale audio is a dealer for both lumin and s-booster... if they have said that the two work fine together, what is the doubt?\nquestions about compatibility should be directed to them\ntntmcdade\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17 posts\n07-10-2023 at 11:31am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt might be compatible, but I can\u2019t get the cover off of the T3 to find out.I have taken all of the screws out and it still remains secure at the front. The instructions illustrate a T2 and the cover seems to come off differently than the T3.\ncoliv00\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4 posts\n09-01-2025 at 03:02pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019d be interested to hear your outcome. I have a T3 and I\u2019m considering adding a Sbooster.\nMore to discover\nSubwoofer Decisions - REL/Rythmik, Pa...\n$500 used power cord for Lumin power ...\nLumin T2 vs X1 - How big is the sound...\nLumin T2 impressions?\nLumin T2 question\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAurender N100H\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"sbooster compatible with Lumin T3?","url":"https://forum.audiogon.com/discussions/sbooster-compatible-with-lumin-t3"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n190794-303\nEdit\nRepair in New Orleans?\nAnyone have a rec for a shop in NOLA? My SACD p;layer is shitting the bed. Thanks in advance.\nsecretguy\n07-28-2024 10:06pm\n17 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nbrunomarcs\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n308 posts\n07-28-2024 at 11:41pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'm in need of some vintage gear repair in the same locale, I hear of an old man on the West Bank but haven't looked him up. I also seen an add from a guy in Lafayette who claims to be a tech.\nmattmiller\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,620 posts\n07-29-2024 at 06:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWilson Audio has been in the New Orleans area for decades selling and fixing stereos, call one of their locations near you.\nacresverde\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n432 posts\n07-29-2024 at 07:36pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@ bruno...the guy on the westbank is probably Tom Sima. I used to take my Phase Linear 400s to him back in the '80's. If he still has the same business name that would be Westbank Audio.\n@matt...with the passing of Doug Wilson a few months ago, I am uncertain of the status of Wilson Audio.\nsecretguy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,000 posts\n07-30-2024 at 01:46pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWilson always made me feel like an interloper.\nsecretguy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,000 posts\n07-30-2024 at 01:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nLooks like Wb Audio is still around. And close to home. Wish they had better reviews.\nbrunomarcs\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n308 posts\n08-04-2024 at 04:35pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI found a place in st Tammany called Digital rehab, I assume they repair all kinds of gear. Maybe they will work out for you, there located on Gauze blvd in Slidell\nsecretguy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,000 posts\n08-04-2024 at 08:12pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@brunomarcs\nThanks. I checked them out. Looks like they are an arm of WIlson.\nbrunomarcs\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n308 posts\n08-05-2024 at 10:57am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWho ever they are an arm of I'm sure they're not cheap. A retail storefront, I'd rather deal with an individual who works out of his garage with 40 years experience myself. I suspect they'd not work on just any vintage gear? I'm gonna call them today and see what they're all about.\nMeanwhile I have another more pressing problem with a single board computer without an OS \u00a0I can't seem to rectify myself. This takes precedence.\njafant\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n21,760 posts\n08-12-2024 at 08:33pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nsecretguy\nWhich SACD player do you own? Keep me posted as you find a Tech to fix the issue/problem.\nHappy Listening!\npaulcreed\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n584 posts\n08-20-2024 at 02:28am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDigital Rehab in Slidell. He was Wilson Audios repair guy for 20 years. I brought a couple things to him with good luck, I believe he is still an authorized Audio Research repair center but can work on anything.\njafant\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n21,760 posts\n09-01-2024 at 08:50am\nCopy Comment URL\nReport Comment\nEdit\nDelete\npaulcreed\nThank You for citing - Digital Rehab in Slidell.\nHappy Listening!\njafant\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n21,760 posts\n09-01-2024 at 08:51am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nsecretguy\nAn update?\u00a0 \u00a0Happy Listening!\nbrunomarcs\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n308 posts\n09-01-2024 at 12:41pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI brought a piece to digital rehab for repair, seems like a decent fellow. Hours are 12 to 6. Half a day Saturday.\npaulcreed\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n584 posts\n09-09-2024 at 04:58am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHe will fix it same day for an extra fee, move you to the front of the line. He fixed a tube amp while I waited in the shop.\njafant\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n21,760 posts\n08-24-2025 at 05:48am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nsecretguy\nUp date me on your SACD player repair.\nHappy Listening!\nsecretguy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,000 posts\n08-27-2025 at 04:09pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHey all. Sorry to be absent for so long.\u00a0 I haven\u2019t done anything yet. It\u2019s so intermittent. It played a SACD perfectly the other day, and then it would only play the red book layer on the next disc.\nIt\u2019s a daily low line player (Marantz 8004) so I won\u2019t want to spend a lot on it.\nI may call the place in Slidell...although going across the lake is a fate worse than death. LOL\njafant\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n21,760 posts\n09-01-2025 at 01:25am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nsecretguy\nThank You for the update.\u00a0 Keep me poster as I have a few CD/SACD players that will need servicing someday.\nHappy Listening!\nMore to discover\nRepair service in New Orleans for tub...\nthefix.com/forum/recovery-eating-diso...\nthefix.com/forum/recovery-eating-diso...\nNew Orleans, La.\nHeaded to New Orleans\nVandersteen Model 2c ii signature\nAuralic Aries G2.1\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Repair in New Orleans?","url":"https://forum.audiogon.com/discussions/repair-in-new-orleans"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195666-154505\nEdit\nCreek Audio service\nAnyone know of a dealer or facility for repairs from Creek Audio (5350 SE).\nthanks\nmike_v\n08-29-2025  2:17am\n1 response\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nbillstevenson\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,319 posts\n08-29-2025 at 03:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou might try KAB in New Jersey.\nMore to discover\nOpinion: of the Hi-Res streaming serv...\nVintage Audio Repair / Tape Machine S...\nOutstanding Service from Logitech\nNakamichi deck service\nRepair service in New Orleans for tub...\nVandersteen Model 2c ii signature\nVolumio Primo Plus\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Creek Audio service","url":"https://forum.audiogon.com/discussions/creek-audio-service"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195598-40\nEdit\nWhat speakers compete with GR Research?\nGR Research delivers compelling videos \u00a0on Youtube about benefits of using \u00a0quality parts in speaker crossovers, etc.\nExample\nAny details regarding other speaker lines that compete with GR Research speaker products on similar quality terms at comparable price points?\nmapman\n08-21-2025  2:36am\n11 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nPost removed\nAug 21, 2025\nknotscott\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,430 posts\n08-21-2025 at 10:23am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThere are other kit makers who compete directly with GR Research.\u00a0 Madisound, CSS, Troels Graveson, HiVi, Parts Express, Falcon Acoustics, and others.\u00a0 Kits skip the retail markup, so can offer higher quality parts for the money.\u00a0 The downsides are that they\u2019re more difficult to hear in person, and have a smaller resale market.\nAs\u00a0Kofibaffour mentioned, parts quality is only part of the equation.\u00a0 The implementation and design choices matter a lot too.\u00a0The kit designs have come a long way in recent years, and some are outstanding.\u00a0 How something sounds to you in your room will always be subjective.\u00a0 Kits offer an easier approach to tweaking that sound if you have the inclination and ability to do so.\nI can say from personal experience that many of the speakers I\u2019ve been inside have used fairly poor quality parts and construction methods....especially true of speakers from very large corporations who follow a typical corporate structure where profit is the name of the game.\u00a0 The parts quality and cabinetry can definitely matter, and many benefit from bracing and better parts.\nyogiboy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,232 posts\n08-21-2025 at 10:40am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHere ya go!\nhttps://www.studio-electric.com/products.html\nmapman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23,710 posts\n08-21-2025 at 01:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPersonally, as an engineer, I want a good design first. \u00a0Then use good quality parts then use measurements to determine the results. \u00a0It all matters if the goal is to do things right and do it well. That\u2019s where price points come in.\u00a0Of course then with speakers it has to sound good. \u00a0Design improvements require R&D. \u00a0It all costs money to do and helps determine end value.\nfoggyus91\nDetails\nDiscussions\nPosts\nThis discussion\n612 posts\n08-21-2025 at 02:13pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@yogiboy\nAgree on the Studio Electric as well as Sonner Audio. Great speakers from small builders, using HQ parts and implementation. Also toss Raven Audio into the mix. All very fair priced, as a matter of fact under priced.\nmapman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23,710 posts\n08-21-2025 at 03:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHelpful responses!\u00a0 Keep 'em coming!\nmapman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23,710 posts\n08-21-2025 at 03:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBTW I am interested in vendors that compete effectively based on overall quality at all price points, no need to limit it to lower cost options only.\nI will say that as price goes up I would expect only the best, but what other products actually deliver that cost effectively?\nAlso which larger better known companies in fact do overall quality for good value best?\nThanks.\noddiofyl\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,644 posts\n08-21-2025 at 09:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have Sudio Electric M4.\u00a0 \u00a0I love these speakers, exactly what I was looking for in my second system. So good I find myself listening to them 80% of the time.\u00a0 \u00a0Awesome speaker.\nmapman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23,710 posts\n08-22-2025 at 12:21am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI heard Studio Electric once at a show and remember thinking I could live with those. \u00a0Rest of the system was Benchmark I believe.\nbassbuyer\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n947 posts\n08-22-2025 at 02:44am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThere are some manufacturers that build quality speakers with excellent components at competitive prices. \u00a0Arendal 1961 and 1723 lines are competitive.\nmapman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23,710 posts\n08-28-2025 at 03:57pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSonus Faber has taken some heat in published videos regarding crossover part quality used in some not inexpensive models.\nNow with a new model it looks like they\u2019ve decided to make those innards visible from the outside. \u00a0I love it!\nhttps://www.stereophile.com/content/sonus-faber-introduces-amati-supreme-loudspeaker\nMore to discover\nAudible Illusions Modulus 3 Audio Res...\nVintage Audio Research subwoofer conn...\nGNSC ugrade for Audio Research preamp\nFidelity Research FR66\nCost Effective Audio Research Combo\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nVandersteen Model 2c ii signature\nAurender N10\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"What speakers compete with GR Research?","url":"https://forum.audiogon.com/discussions/what-speakers-compete-with-gr-research"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195642-128699\nEdit\nTime for some housekeeping: Best contact cleaner?\nI was thinking it'd been awhile since I'd taken my system down and done a good cleaning. Along with that would be a thorough dusting, rerouting cables, etc. But primarily, I would like to clean any and all conductive interfaces. I can't remember the last time it was done.\nTo that end, what are your recommendations for contact surface cleaners and perhaps contact enhancers? I may even do the tube pins!\nThanks.\nHappy listening.\nmusicfan2349\n08-26-2025  5:09pm\n14 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ndekay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,249 posts\n08-26-2025 at 05:31pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI like MG Chemicals - 409B Electrosolve Zero Residue Contact Cleaner\u00a0 and Kontak.\nThe MG is a lot less expensive and seems to be just as good (the Kontak smells like dry cleaning fluid/naphtha with a hint of citrus:-).\nI do not use \"treatments\" on anything that gets warm/hot.\nDeKay\nhbarrel\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n554 posts\n08-26-2025 at 05:38pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhen I was working my kit contained CRC\u2019s contact cleaner. I never experienced any negative issues. Used it on some pretty sensitive electronic boards.\ndill\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,636 posts\n08-26-2025 at 06:09pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMr. Clean Magic Eraser to get tarnish or goop off, then apply GC Electronics De-ox-id. NOT Caig Deoxit. Been using this combo for many years.\nmusicfan2349\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n333 posts\n08-26-2025 at 11:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@dill\nWhy not the CAIG product?\nAnd thanks everyone!\nHappy listening.\nlalitk\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,196 posts\n08-27-2025 at 03:18am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have been using Caig Deoxit for 20 plus years. No issues!\ndill\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,636 posts\n08-27-2025 at 03:29am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@dill\nWhy not the CAIG product?\"\nCaig Deoxit contains a lubricate, I don't see a need for one when it comes to cable terminations. I understand the use of it on switches and rotary controls.\ntheo\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,767 posts\n08-27-2025 at 04:13am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have had good results with Cardas cleaner, although I use the Caig brushes.\noddiofyl\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,644 posts\n08-27-2025 at 08:04am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI also use MG Electrosolve.\u00a0 \u00a0Good stuff.\nthecarpathian\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,296 posts\n08-27-2025 at 12:33pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAny type metal cleaner/polish then 90% alcohol.\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,825 posts\n08-27-2025 at 01:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n+1 dekay\nroadcykler\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n360 posts\n08-27-2025 at 02:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n91 or 99% alcohol works as well as anything and doesn't have the ridiculous markup that other stuff has.\ndill\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,636 posts\n08-27-2025 at 03:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n\"91 or 99% alcohol works\"\nYes, just make sure you avoid contact with some plastics.\nmusicfan2349\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n333 posts\n08-27-2025 at 04:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@dill\nAh, thank you. I see your point.\nHappy listening.\ndekay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,249 posts\n08-27-2025 at 06:27pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAlcohol can also damage gold plating and 99% alcohol may contain carcinogens due to the manufacturing process, so 91% may be a better choice.\nI switched to 91% for my DIY vinyl cleaning solution and sanitizing hard household surfaces.\nI learned during Covid that 70% is more effective for softer surfaces including our skin.\nDeKay\nMore to discover\nA Worthwhile Untrasonic Cleaner\nReview: Record Research Lab Super Dee...\nKlaudio ultrasonic cleaner - Only usi...\nMofi Cleaners\nStylus cleaners\nFocal 36 MONTH FINANCING\nAyon Audio S-10IIxs\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Time for some housekeeping: Best contact cleaner?","url":"https://forum.audiogon.com/discussions/time-for-some-housekeeping-best-contact-cleaner"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n155579-91142\nEdit\nBest audiophile file converter?\nI want to create the highest quality .DSF files from .DFFs. and FLACs from .WAVs.\nBatch processing a must. Thank you.\nrocketroom\n03-23-2020  2:28pm\n6 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n03-23-2020 at 06:14pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThese should be bit-perfect converters. If you have Linux, ffmpeg or sox are the way to go.\nBest,\nrocketroom\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n36 posts\n04-19-2020 at 12:57am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThank you Eric! RR\ntantejuut\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n125 posts\n04-19-2020 at 07:38am\nCopy Comment URL\nReport Comment\nEdit\nDelete\ndbPoweramp on windows is my goto converter.\nrocketroom\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n36 posts\n05-01-2020 at 07:15am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks guys for the info! RR\nPost removed\nFeb 26, 2021\nlanx0003\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,051 posts\n08-26-2025 at 12:45pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAudacity can perform batch conversions using its Macros.\nMore to discover\nthe gateway product that turned you i...\nAudiophile Balanced XLR Y Cables\nIs the idea of audiophile listening a...\nAny recommendations 78 rpm audiophile...\nThe Audiophile's Wife\nRSX MUSIC SERVER RSX MUSIC SERVER\nBricasti M5\nAyon Audio S-10IIxs\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Best audiophile file converter?","url":"https://forum.audiogon.com/discussions/best-audiophile-file-converter"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n1238346030\nEdit\ntop ten things you learned about HiFi on Agon\nHere's my list in some semblance of order:\n1. how to more critically listen to music and determine what my system is doing right and what areas could stand some improvement\n2. room shape and speaker position matter a lot\n3. about other websites where I can get more detailed information on a particular subject\n4. importance of the source\n5. importance of good power cables\n6. importance of a solid foundation for your equipment\n7. importance of tonearm and cartridge matching and setup\n8. about silver fuses\n9. concepts related to amp and speaker matching\n10. the concept of overall system balance and working towards a particular system sound.\nI have really learned quite a bit by coming on this site. I generally used to think I knew my way around HiFi gear, having built speakers and owned various systems over the years, some that worked \"pretty good\" (put together by budget, market research, ear and accident), and some... well, not-so-much. I have a much better idea of where my understanding is now (thus the screen name), and feel like I am only scratching the surface.\nWith that said, every time I listen to my system these days I am aware of how much better it sounds compared to only a few years ago - due in large part to advice based on your writings and rantings on here. And this accomplished by adding many tweaks, a few key accessories and without adding or swapping very many major parts over that time span (except three turntables and four cartridges [but no microphone!]). Thanks Agoners for all the great information!!!\nknownothing\n03-29-2009  5:00pm\n43 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,218 posts\n03-29-2009 at 06:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMay sound circular and stupid, but everything is everything. In other words, everything matters, the weak link in one's system can be anything, I can't even begin to make a list of what's most or least important.\nAnd then, if that's not enough, this is very dynamic thing, everything is constantly changing.\nCould be building a satisfying system might be a major accomplishment in life..... Talk about enlightenment!\nmapman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23,710 posts\n03-29-2009 at 08:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n1. Tubes are cool.\n2. records are cool too\n3. digital s--ks\n4. No hifi buff would be caught dead with a digital hi def TV because digital s--ks\n5. noise and distortion is bad\n6. avoid threads with the word \"best\" in it\n7. BAM stands for Brick and Mortar\n8. reel to reel is really cool\n9. some audio buffs really hate omni speakers becasue they can't stand all that sound bouncing around the room\n10. most Audiogoner's have a good sense of humor.\nsomec59\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n245 posts\n03-29-2009 at 09:09pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe proper use of metaphors.\neldartford\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,262 posts\n03-29-2009 at 09:09pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n\"A fool and his money are soon parted\".\nentrope\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n482 posts\n03-29-2009 at 09:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n1. Every subject has it's contrarian\n2. Minutiae abounds in audio\n3. Tangential comments can take over a thread\n4. There are no absolutes in audio\n5. Tvad responds to every post\n6. A wicked sense of humor is manadatory\n7. Members can spot a shill quickly\n8. Spelling is a challenge for many\n9. Typing is a challenge for the rest\n10. Many wonderful, helpful, generous people are 'Goners\nngjockey\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,042 posts\n03-29-2009 at 10:09pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n1. Ignorance is bliss\n2. Everything can be related to cars\n3. Everything can be related to the \"power paradigm\"\n4. Room size is everything\n5. I now know the best speakers under $300\n6. I should drive those same speakers with $10,000 amps\n7. \"Tubes rule. SS drools\"\n8. Whatever someone owns is beyond reproach\n9. Whatever someone sells is beyond reproach\n10. Tvad is always right\nmapman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23,710 posts\n03-29-2009 at 10:45pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n11. There is no magic involved with Magicos\n12. Democrats like Class D. Republicans like Class A\n13. Yes, there really is a genre called \"Black Metal\"\n14. Superman uses a really expensive power cord in his system\n15. Yes, there really is such a thing as a $5000 IC\n16. we should all sell our belt drive turntables. DD is really the bomb after all.\n17. take a 30 year old DD table and add thousands of dollars worth of enhancements and your records will finally sound great\n18. All the good tubes were made years ago by people who are now dead so prepare for the great tube depression coming our way in about 20 years or so.\n19. Equipment by Soundesign does not sell well on Audiogon.\n20. The fewer people who actually own a piece and the more expensive it is, the better it has to be.\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n91 posts\n03-29-2009 at 11:14pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYEAH ENTROPE !!!\ndanlib1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n819 posts\n03-30-2009 at 01:27am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n1. Great guys here (see Lugnut thread)\n2. Cool ladies in audio too!\n3. Implementation is important\n4. Synergy is everything!\n5. Cables really matter\n6. All amps are not the same\n7. Nelson Pass is cooler than Obama can hope to be\n8. You really can have virtual friends\n9. It's okay if TVAD responds to everything- he knows his shit\n10. It's the music that matters most of all!!\nglory\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,620 posts\n03-30-2009 at 01:45am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMapman's 1235&6 in his 1st response.\nNever buy new. Buy used on the 'Gon.\npriz\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n49 posts\n03-30-2009 at 03:33am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI agree with Eldartford. No matter how much (serious) money I have spent on sources, speakers, etc. etc. I have not come close to the sound of live music in my room. Did I have some great sounding systems\u0097YES. Did it sound like live music\u0097NO!\nPlease enjoy what you have and save yourself a lot of money. The music is more important then what it is played through any ways!\nmarkphd\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n667 posts\n03-30-2009 at 05:58am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNobody agrees on anything so you may as well make up your own mind.\ntrelja\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,226 posts\n03-30-2009 at 03:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'll third Entrope's Top 10 list. Gonna be hard to outdo that one.\ndbphd\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,643 posts\n03-30-2009 at 04:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'd add misuse or confusion of words to Entrope's Items 8 & 9, \"then\" for \"than\" being perhaps the most common confusion in Audiogon posts. The posts of Eldartford and Markphd in this threa","title":"top ten things you learned about HiFi on Agon","url":"https://forum.audiogon.com/discussions/top-ten-things-you-learned-about-hifi-on-agon"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195229-20253\nEdit\nBatteries are Cheap, Backup power is expensive\nDear Audiophiles,\nTo make a long story short I need to make sure my Internet devices stay on even when power is down for 24 hours, which on the South Carolina coast is realistic.\nI have an\nAPC UPS 600VA\nwhich I though would do the job but it actually lasts less than 2 hours.\u00a0 So I have been crunching the numbers and have really been surprised at how expensive an APC UPS is per minute of run time vs. modern battery based generators and DIY solutions.\nAn APC UPS can be anywhere from $1.50 to $2.50 / minute of run time while an\nEcoFlow Delta\nfor instance is around $0.50 to $0.75 / minute.\u00a0 Not only is the EcoFlow cheaper but just has ten times better run times.\u00a0 A single 1 kWh unit will keep my data closet running close to a full 24 hours.\u00a0 I have too many devices in there which consume ~ 50 watts.\u00a0 50 x 24 = 1,200\nI did in fact purchase a Delta 2 with back up battery for other reasons than the data closet, but when doing the research I also investigated DIY backup solutions and came across the idea of using a\nRenogy inverter/battery charger\n+ 2x\n12V LiFePO4 batteries.\nIt\u2019s even cheaper than the Ecoflow but requires much more effort to set up.\u00a0 \u00a0 I\u2019ll do a full write-up on that soon.\nWhat have you done to back up your home devices?\nerik_squires\n07-24-2025  1:46pm\n48 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nbillpete\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n396 posts\n07-24-2025 at 04:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhat about a generator that comes on automatically if your power goes off? Or is the lag time too slow?\njwei\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n276 posts\n07-24-2025 at 04:33pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have a Cyberpower UPS 1350VA that keeps my low wattage modem and router running for well over an hour.\u00a0 (Of course my laptop has its own battery.)\nThat is enough time for me to start and hook up my \"portable\" gasoline-powered generator in the garage which supports my network equipment, refrigerator, TV, and a couple lights.\u00a0 I had to refill the gas tank 3 or 4 times per day.\nI had a neighbor who had a natural gas-fired Generac system inserted into his power input wiring that automatically kept his whole house powered up, but that was expensive.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n07-24-2025 at 04:43pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPS - My bad.\u00a0 The Renogy unit I quoted above does NOT include a charger.\u00a0 I\u2019m rethinking that.\u00a0 It seems they did have an inverter/charger but not sure if it\u2019s discontinued.\nUnfortunately fossil fuel power is not a great option.\u00a0 The data closet is furthest away from the outdoors.\u00a0 \u00a0I am absolutely in love with the idea of propane powered generators though, the ability to store propane for years is appealing, so long as you can store it away from the main building, which I cannot.\u00a0 \u00a0Same of course for gasoline.\u00a0 I have no separate shed/garage in which storage of those would be safe.\nSo overall the solution for me has to fit in the bedroom closet.\nAlso would love, in a perfect world where I can afford to buy an ugly ass stainless steel truck an outdoor generator.\u00a0 The yearly maintenance costs alone are more than my budget. :)\u00a0 Also, no access to natural gas.\u00a0 This is an electric only neighborhood.\njwei\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n276 posts\n07-24-2025 at 09:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMany pickup trucks have 120 V outlets.\u00a0 Just need to add a switch on your house electrical box to flip your source to a cable from the truck.\u00a0 Turn on the truck before your APC UPS runs out of juice.\u00a0 (Assuming you have the truck.)\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n07-24-2025 at 11:34pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@jwei You bring up a good point.\u00a0 In 2021 the Great Texas Freeze prompted a run on Ford F-150 trucks for just such a reason.\u00a0 It seems they feature from 2kW to 7.2kW inverters depending on the model.\u00a0 Dealers were encouraged to loan them out, I\u2019m sure generating a lot of goodwill.\nFew things wrong with this though.\u00a0 First, I have a Toyota SUV with a wimpy 120W outlet.\u00a0 About enough to run a laptop charger.\u00a0 I did price out putting a 2 kW inverter along with the necessary upgraded inverter, wiring and extra battery needed.\u00a0 About $1,500 installed I think.\u00a0 Not a bad option, but about $1,000 more than I want to spend right now.\nAs for a UPS... too short of a run time\u00a0 and too long of a charge time.\u00a0 The\nEcoFlow battery generators\nhowever have terrific charging speeds on 120V.\u00a0 Anywhere from 1,200 W to 1,800 W of power draw allowing them to recharge fully from 1 to 2 hours.\nIn my home what MUST run is about 100W.\u00a0 I\u2019m not including the fridge or an electric blanket.\u00a0 \u00a0At that rate with just my Delta 2 + Battery I\u2019d be out in a day, so pulling them out to the car, or running an extension cord and charging them every day would not be entirely unreasonable.\nI think my final solution is going to be 2 x LiFePO4 batteries with a 500W inverter and battery charger.\u00a0 Final cost is around $500 for 2 kWh.\u00a0 This will be in addition to the 2kWh capacity I have in the Ecoflow units.\u00a0 Of course, if power is out longer than that I\u2019m screwed, and none of this will save my refrigerated food or keep my AC running.\u00a0 I think I\u2019ll be able to manage a pot of coffee in the morning though.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n07-25-2025 at 02:14am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@billpete\n- Sorry I missed your post earlier.\u00a0 \u00a0Personally, an outdoor generator like a Generac or Kohler is out of my budget for now... but, assuming it was not they still have a 10-20 second transfer delay.\u00a0 I would still need a very small UPS for my networking gear and PCs to ensure uninterrupted usage, such as being on a video call.\nYou are on the right track though, having out outdoor generator would greatly diminish the size of UPS or battery back up I need indoors.\u00a0 At that point, practically any UPS would be big enough to handle my data closet.\nfatdaddy2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n551 posts\n07-25-2025 at 09:30am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhy is this posted on an audio forum?\nskids\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n122 posts\n07-25-2025 at 09:32am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@erik_squires\nI believe underground storage of a propane tank only needs a minimum of ten feet from building or property line.\u00a0 Up to 2000 gal tank.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n07-25-2025 at 11:30am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@fatdaddy2\nNo Internet, no music.\u00a0 This site has hundreds of discussions about networking and AC wiring.\nPost removed\nJul 25, 2025\ndinov\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n870 posts\n07-25-2025 at 11:58am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019m lucky because my home has natural gas, so we have a whole house generator. To take care of the outage during the swap over during a power outage, I use APCs \u00a0on my router and satellites.\nthecarp","title":"Batteries are Cheap, Backup power is expensive","url":"https://forum.audiogon.com/discussions/batteries-are-cheap-backup-power-is-expensive"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n172535-134728\nEdit\nThe Big Misconception About Electricity\nThis vid goes quite a ways down the road to explaining why:\n1)\u00a0 Power cords make a not so subtle difference.\n2) Cable elevators should not be looked at askance.\nRegards, barts\nbarts\n11-23-2021 11:41pm\nNext \u203a\nLast \u00bb\n553 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nPost removed\nNov 23, 2021\nmillercarbon\nDetails\nDiscussions\nPosts\nThis discussion\n12,531 posts\n11-24-2021 at 12:03am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYeah, that's a good one. Watched it yesterday. Thought about posting. But then remembered. Nothing, but nothing, gets screwed up here more than electricity.\nEspecially when it is true. Current flows in fields, which is why so many things like PPT eMats, TC, etc work. We don't know by what mechanism exactly, but it is clear it has something to do with fields.\ndjones51\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,947 posts\n11-24-2021 at 12:29am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou watched that YouTube video and came away with the notion power cords\u00a0 and cable elevators make audible differences in stereo systems? Seriously?\ndjones51\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,947 posts\n11-24-2021 at 12:31am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCurrent doesn't flow in the fields it flows in the wire pushed by the fields.\nPost removed\nNov 24, 2021\nfemoore12\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n683 posts\n11-24-2021 at 11:46am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI knew power cords made a difference before I watched the video. My ears convinced me of that.\ncharles1dad\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10,250 posts\n11-24-2021 at 12:57pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@femoore12\n\"I knew power cords made a difference before I watched the video. My ears convinced me of that\"\n+1, However given human nature there are those who will tell you with conviction that your ears are \u2019wrong'. Bottom line, have confidence in your own listening\u00a0 findings.\nCharles\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,825 posts\n11-24-2021 at 01:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n+1 Charles1dad ;-)\nbarts\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n804 posts\n11-24-2021 at 01:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@djones51\nYou watched that YouTube video and came away with the notion power cords\u00a0 and cable elevators make audible differences in stereo systems? Seriously?\nNo.\u00a0 \u00a0My ears tell me or maybe its my ear/brain interface, in any case \"I don't care\" as I listen to music not equipment.\nTruth passes through three stages:\n1) Ridicule\n2) Violent opposition\n3) Acceptance as self-evident\nSchopenhauer\nRegards, barts\nteo_audio\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,197 posts\n11-24-2021 at 02:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThink of it as a form of prismatic separation (of the known components of the signal/intelligence) or similar, at the surface of the wire.\nTherefore... the physical shape of the wire and it\u2019s overall cross sectional aspects play into it heavily.\nThink of this as tied to the delta or rate of change. Where the delta is the highest in the signal, this also is the greatest effect upon the \u2019intelligence\u2019 of the signal.\nThe ear hears principally (almost entirely) via the transients, which are the high delta components. the human er and the brain tied to has an almost crazy level of quality of sensitivity to complex harmonic function in transients and micro transients, as a package. Which varies across individuals, as does intelligence and whatnot. We are not al the same so these sensitivities cannot be given a singular number. It is also a variable that can learn and it can move around. A self adjusted world class FFT sytem, for the best of listeners. But wait, it gets even more complex. Which is all part of the question that deniers of cable need to get straight.\nThus the small area of the signal that is adversely modulated and altered via the interactive point of the fields and the wire, just happens to be the place where 100% of your hearing resides.\nFYI, the liquid metal alloy of the Teo Audio cables, has no surface, not in the way that the \u2019lattice structure\u2019 of the atomic bonding of a piece of \u2019wire\u2019 has. The two are radically different in behavior and in the physics of it all, specifically in the way they each deal with the delta of the signal (and the rest of it)...\nbarts\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n804 posts\n11-24-2021 at 02:05pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@oldhvymec\nBack in the day when I was in the Marine Corps myself and another Sgt. rented\u00a0 a mobile home.\u00a0 Plenty of\u00a0 parties and the unique bit was the bare wires that hung from the soffit over the sink where obviously a light should be.\nWell, boys will be boys, and when the parties really got going we would have a contest to see who could hold those bare wires the longest. Amazing there were no deaths just a few fainting episodes.\u00a0 Sorry no vids, there was no such thing as consumer video at the time.\nRegards, barts\nfemoore12\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n683 posts\n11-24-2021 at 03:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@charles1dad\nHowever given human nature there are those who will tell you with conviction that your ears are \u2019wrong'.\nShould we tell them we also don\u2019t all see colors exactly the same?\ndjones51\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,947 posts\n11-24-2021 at 04:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHowever given human nature there are those who will tell you with conviction that they are immune to biases that affect all humans, they are special golden ear humans.\ncharles1dad\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10,250 posts\n11-24-2021 at 04:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@femoore12\nWe could but\u00a0 'know it alls' have a capacity for disregarding what is outside of their belief system.\nCharles\noldhvymec\nDetails\nDiscussions\nPosts\nThis discussion\n5,101 posts\n11-24-2021 at 07:46pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHowever given human nature there are those who will tell you with conviction that they are immune to biases that affect all humans, they are special golden ear humans.\n<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>>>\nI don't think it's golden eared at all for some. I think it is pure training.. Mechanics teach new mechanics what to listen for.. There is a lot of well trained mechanics that can hear a malfunctioning piece of equipment 1/2 mile away. YET some people standing right next to a failing piece of GRINGING metal and can't hear or feel a thing.. They aren't trained, so guess who shows up.. The guy who fixes things..\nMr djones51 you just haven't been trained to tell the difference..\n300k piece of equipment, do you really think bias anything comes into play when you FIX a piece of equipment. It is either fixed right or it is not.. It either sound RIGHT or it doesn't..\nMechanics 101, \"To thy own self be true\". There is no crying in mechanicin', you are the last guy there.. No one else.. Your EARS better be golden.. LOL\nRegards\nbaranyi\nDetails\nDiscussions\nPosts\nThis di","title":"The Big Misconception About Electricity","url":"https://forum.audiogon.com/discussions/the-big-misconception-about-electricity"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n142476-2625\nEdit\nSONIC CRAFT  ??? IS THERE REALLY A SONIC CRAFT STORE  ???\nI have been trying to get a hold of\u00a0 somebody , anybody ??\u00a0 \u00a0A Phone number ?? ...........No body answers e-mails, no phone number listed anywhere, I have a account (I have a account but can't get the pass-word)\u00a0 So I can't get any parts.....Maybe they are out of business, maybe the phone is disconnected...........Does anyone have a working phone number for them ???\u00a0 \u00a0 \u00a0 HELP !!!\nautospec\n01-04-2019  7:04pm\n10 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ntpreaves\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,690 posts\n01-05-2019 at 08:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThey have a presence on AudioCircle. Maybe you can get an answer there.\nautospec\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n521 posts\n01-18-2019 at 03:11am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThey need a presence somewhere, I spend the better part of two days trying to get my pass-word in order........Now I trying to buy some Mondorf caps , but it advertises one price buy when I go to buy it, the price changes ???\u00a0\u00a0 I have tried to contact them at Sonic craft but they would rather tell me I'm wrong than try to fix it.......Of the over 50 websites I deal with this is the hardest to get around and all most impossible to fix......I manufacture tube electronics and I buy lots of parts.......Will\nmkgus\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n324 posts\n02-05-2019 at 10:41pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf I\u2019m not mistaken, Sonic Craft will sometimes shut down when the guy goes on vacation or whatever, or am I thinking of VH Audio? I remember seeing text on the website about that once. Do you see that text right now?\nmotokokusanagi\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n189 posts\n02-16-2019 at 03:36am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMadisound and Parts Connexion also have Mundorf caps. Or create a new account.\nscdrj\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6 posts\n01-14-2020 at 09:13pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOr click on the \"Password forgotten? Click here\" directly under the field.\u00a0 But then, you would have missed your chance to b!tch.\u00a0 My guess is that the other distributors know you too...?!@#\u00a0 No phone number so you insist on one...\u00a0 Par for the course ;~/\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,406 posts\n01-15-2020 at 07:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHave purchased many parts from Sonic Craft over the years. Never had a problem.\njeffjazz\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n114 posts\n02-03-2020 at 07:14pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nJeff at Sonic Craft goes out of his way to take care of customers and is extremely knowledgeable. \u00a0He has always taken care of me over the years. I trust his ears and expertise. \u00a0I would call him directly. He may be on vacation, so patience.\nseanaudio\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1 posts\n10-01-2023 at 10:19pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nRecently I placed my order on Sonic Craft since so many people said they are the best. A guy called \"Martin\" replied to me and said, \"You need capacitors for power supply?\" I told him again I was building my amplifier and needed their ESR information. Then they never replied I got into their website and found my account got blocked.\nI have paid Sonic Craft lots of money to purchase lots of parts, but they never refunded me. I tried to call their number but it was Geico's number wrong number. Last email \"Martin\" said their manager blocked me not him I asked him why they never replied. Does anyone know how to let them ship out my package?\nscdrj\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6 posts\n02-20-2024 at 05:02am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nJust seeing this.\u00a0 You were banned for many reasons, but the rest of it is fiction \ud83d\ude44\nsteakster\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,220 posts\n08-19-2025 at 03:11am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI just received my order of AudioCaps from\nSonic Craft\n.\u00a0 \u00a0Expertly packed and shipped immediately.\u00a0 Their online store is basically open on Tuesdays only.\u00a0 The cart doesn\u2019t retain the order if placed on a different day.\u00a0 That worked fine for me. They had exactly what I was looking for.\u00a0 \u00a0 A+++\nMore to discover\nIt\u2019s it just me or there are others.\nAny Opera Consonance M15 owners out t...\nOpinion: of the Hi-Res streaming serv...\nAre there any Bluetooth repeaters ava...\nEtheregen - doesn't seem right that i...\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nFocal 36 MONTH FINANCING\nAurender N100H\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"SONIC CRAFT  ???    IS THERE REALLY A SONIC CRAFT STORE  ???","url":"https://forum.audiogon.com/discussions/sonic-craft-is-there-really-a-sonic-craft-store"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195445-6853\nEdit\nVintage 1940's Vacuum Tube Primer\nThis 10 minute 1943\nvideo\nillustrates the basics of how tube circuits work.\nI thought you might enjoy it and maybe even learn something.\nCheck it out.\nmysearcher257\n08-11-2025  3:21pm\n1 response\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nbigtwin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,626 posts\n08-12-2025 at 12:34am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@mysearcher257\nThanks for reinforcing how little I understand about electronics.\u00a0 I watched the entire video and still have no idea how tubes make music.\u00a0 But I do know that I like bacon.\u00a0 I guess that will have to suffice for now.\u00a0 \u00a0Cheers.\nMore to discover\nVintage Cassettes: Direct Drive, 3 He...\nThoughts on vintage Accuphase\nReputable restorer for vintage integr...\nRecommendations for used/vintage inte...\nHiFi newbie - Thoughts on pairing vin...\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10IIxs\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Vintage 1940&#39;s Vacuum Tube Primer","url":"https://forum.audiogon.com/discussions/vintage-1940-s-vacuum-tube-primer"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195417-152656\nEdit\nSubwoofer connection\nHi everybody:\nDoes anyone know how to connect an active subwoofer into a Convergent audio preamp?\nThere are two \u00a0R/L RCA outputs and I\u2019m using the first pair for Quicksilver monoblocks. Can I use the other pair for the Subwoofer?\nThanks for helping me.\npinotnoir\n08-08-2025  9:37pm\n9 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nknotscott\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,430 posts\n08-08-2025 at 10:26pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf both sets of RCA outputs run off the same volume knob, you should have no trouble.\u00a0 (nice preamp!)\nbigtwin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,626 posts\n08-08-2025 at 10:30pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nJust google \"how to connect an active subwoofer into a Convergent audio preamp\"\u00a0 Long expanation and video.\nyogiboy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,232 posts\n08-08-2025 at 10:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThat preamp has a toggle to choose output one or two. You will need a pair of\u00a0 Y adapters from the preamp one outputs to the amp inputs and the sub inputs. You will need something like this\u00a0 to run an active subwoofer!\npinotnoir\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n28 posts\n08-09-2025 at 11:29am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThank you all, captains, as you will see, if \u00a0everything else fails, ask and follow the captains suggestions. It\u2019s what I\u2019m going to do inmediately.\nYogiboy, perhaps I can use the second output that already exist in CAT, will be the same, but thanks again for the image. I\u2019ve never seen this kind of connector\nPost removed\nAug 09, 2025\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n08-09-2025 at 12:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nUsing RCA preamp line level rather than speaker wires for subs is best:\nIt is often better to\nremove the lows from the signal, send only the lows to the sub\n, and then your amp(s) for your mains will not need to try to make low bass and thus your main speakers will also be relieved of the job of producing lows.\nThat is how/what allows a low powered amp, often a tube amp, to be 'enough' with the help from a self-powered sub.\nSo, rca out to a crossover somewhere, often within the sub, the sub takes the lows and sends the rest of the signal back out to your amp(s).\nIF you use both rca out from your preamp, or a splitter like shown, then your mono blocks and main speakers will still be trying to make all frequencies, including the lows intended for the sub. It's the lows that need the most power.\n..............\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n08-09-2025 at 12:48pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nEveryone, click on op\u2019s name, details, view his system, I would love to hear your system!!!!!!!!\nhttps://www.audiogon.com/systems/9589\nI guess those amps have enough power for the lows\npinotnoir\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n28 posts\n08-09-2025 at 07:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHi elliottbnewcombjr,\nThanks for your answer, if you ever visit Barcelona, you\u2019re wellcome to come home. Music and pinot noir are granted!\nAs well as the other captains\u2026\nBy the way, how can I post an image?\npinotnoir\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n28 posts\n08-09-2025 at 10:05pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nhttps://imgpile.com/p/XZu0o8E\nMore to discover\nspeaker connection\nBalanced connection XLR microphone ca...\nDigital or analog audio connection to...\nmirage speaker connections\nLFE or L&amp;R connections\nAurender N100H\nVandersteen Model 2c ii signature\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Subwoofer connection","url":"https://forum.audiogon.com/discussions/subwoofer-connection-11"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195210-1235\nEdit\nCrossover or crossoverless\nThe founder and builder of the highly respected high-end speaker company\nGauder Akustik\nDr. Gauder\n, says that using a full-range driver is\nvery bad\n. He uses\n3- to 4-way speakers\nwith extremely complex\n10th-order crossovers\nconsisting of\n58\u201360 components\nIn contrast, some other well-known and equally respected speaker companies \u2014 such as\nVoxativ, Zu, Cube Audio,\nTotem\n\u2014 use\ncrossoverless designs\nWho is right, and who is wrong?\nbache\n07-22-2025  4:13pm\n17 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nknotscott\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,430 posts\n07-22-2025 at 06:10pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNo one is 100% right or 100% wrong.\u00a0 It\u2019s highly subjective and depends on the objective.\u00a0 All have pros and cons, and there are many ways to skin a cat.\u00a0 It boils down to highlighting the best choices, and minimizing the effect of the unavoidable less desirable ones.\nkoestner\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n742 posts\n07-22-2025 at 06:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThat intricate a crossover may give you a textbook frequency response, but I would think it sucks up dynamics like a sponge.\nbigshutterbug\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n395 posts\n07-22-2025 at 07:36pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhich Totem brand speaker does not have a crossover?\nbache\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n581 posts\n07-22-2025 at 08:19pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMost popular new Model\u00a0 Element Metal\u00a0 V2 , got only tweeter crossover, probably\u00a0 only one or two elements , but two main drivers\u00a0 -crosoverless see (\u00a0The design is a controlled ferocity that amazingly requires no crossover, channeling vast dynamic potential into the purest musical experience)\u00a0 -from Totem\u00a0 web site\nmark200mph\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n909 posts\n07-23-2025 at 06:40am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCrossovers take energy. I use an electronic crossover.less energy less distortion and dsp the room a nd change frequency without component change.however if it sounds great someone got it correct no matter what magic they used and that's what counts.enjoy the hunt.\nbdgregory\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,746 posts\n07-23-2025 at 08:37am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDidn\u2019t Green Mountain Audio advocate for none, or \u00a0minimal crossover?\noberoniaomnia\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n408 posts\n07-23-2025 at 12:50pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have a pair of PearlAcoustics Sibelius single driver Voigt tube speakers, and love them. If one argues that the audio signal can only be degraded by components, having no component such as crossover is the ideal situation.\nI've also seen some old audio luminary quote (from B&W founder????) that ideally there is a single driver speaker, but if you cannot get a decent result, then add a second, if that is not decent then add a third. That means, multi driver speakers are the result of the inability of a speaker designer to make a good single driver speaker.\nThere is also the problem of wave cohesion from multiple drivers, that is non-existent with single driver models.\nBut as always, to each their own.\njsalerno277\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n533 posts\n07-23-2025 at 01:48pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBache, this question is no different than you post on single or multiple driver speakers. See my response in full. \u00a0Conclusion, it depends upon the execution of the design intent and our personal sound quality preferences. \u00a0There is no right or wrong.\ncuriousjim\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,165 posts\n07-23-2025 at 02:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI grew up using speakers that were no more than 8\u201d full range drivers with wizzer cones attached. \u00a0Then I bought some ADS 300\u2019s. Tiny two way speakers with a big sound. Then came my first subwoofer and a separate active crossover to fill in the bottom. \u00a0Essentially making my system a three way. Much later came the DQ-10\u2019s with their 5 way crossovers. \u00a0When I added the sub and crossover it became a 6 way speaker system. Now, \u00a0I have a 3.5 way and a sub.\nI bet the crossover\u2019s in the Amati\u2019s cost more than my first few systems combined!\nI sure have come a long way in my journey.\nlarsman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,218 posts\n07-23-2025 at 02:36pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@knotscott\n+ 1 - No real 'absolutes' here....\noceanaudious\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5 posts\n07-23-2025 at 03:14pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDriver quality has improved. While the answers have all been correct, listening through the\nclairAudient 1+1 v5\nmay change a few of them. This is a remarkably designed product that compensates for the very few resonances in the full range of the newest version of the driver.\nPost removed\nJul 23, 2025\nPost removed\nJul 23, 2025\nPost removed\nJul 23, 2025\nunsound\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n7,425 posts\n07-24-2025 at 04:54pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@bdgregory\n, Roy of Green Mountain advocated for 1st order / 6 dB crossovers. In practice they were more complicated than standard text book illustrations, in that they had elements added to compensate for driver irregularities, etc. in an effort towards making a complete time coherent speaker system as heard from the suggested listening position to speaker distance.\npindac\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,236 posts\n07-25-2025 at 04:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019m not an advocate of a Dual Concentric Driver, Multi Driver or a Panel Speaker Iike an ESL.\nI own and use all Three Types.\nI am an advocate of how they are Set Up. As Cabinet Construction are not all equal and the impact of energy produced by Drivers and this energy effecting a Cabinet is not all equal.\nThe Structure used under a Speaker has a substantial influence on End Sound being produced.\nThe Interface of the Speaker to the Room and the Rooms capability of managing Sound Energy within it, substantially effects the End Sound produced.\nA preference for a particular design for a Speaker, if all that is being considered, will create one outcome only.\nOnly Luck on one\u2019s side will create the End Sound that thoroughly impresses.\nWhen an Interface for a Speaker is discovered that shows End Sound being produced that really impresses. Why care about a Xover or no Xover. Bring new options for an End Sound into the Space allocated for experiencing the Audio System.\ntoddalin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n708 posts\n08-09-2025 at 12:15am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAbsolutely nothing conventional about these.\u00a0 But what works, works.\u00a0 Got to make my Heil mods to make it all work though.\nMore to discover\nGrandinote speaking about crossoverle...\nCrossover or crossoverless\nCrossoverless Speakers - Ultimate Sol...\nRSX MUSIC SERVER RSX MUSIC SERVER\nAuralic Aries G2.1\nAyon Audio S-10 II Signature Network Playe","title":"Crossover or crossoverless","url":"https://forum.audiogon.com/discussions/crossover-or-crossoverless"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n1157908772\nEdit\nShakti Stones Do they actuall work guys.\nShakti Stones: Does this work?\nWhere are you placing them if you only had one or two?\nWhat is it doing to your system?\nI need some straight answers please!\nI can hear a difference in Powercords and cables and all others for sure, CONES and isolations devices work but depending, on my Table, you bet! On my amplifier I am not sure. so......any inputs are appreciated\nThanks\nrapogee\n09-10-2006  5:19pm\nNext \u203a\nLast \u00bb\n62 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nmrderrick\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n292 posts\n09-10-2006 at 10:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYes they work. I would start with one directly on top of your amps transformer. I have not had any luck (good or bad) with them when used with digital equipment. I have one on the transfrormer cover inside my Classe CA400 amp. (major improvement) I had two on my ARC Ref 1 directly over the power supply transformers. (not as dramatic as with my amp) I moved the stones to the tops of the first network boxes on my MIT 850 Ref speaker cables. (substantial improvement) I have started to experiment with the On Lines, so I'm still working through the learning curve with these. The stones lifted a layer of grunge that I didn't know existed. More \"air\" and detail in the music. There is one area were they made things worse. I tried a stone inside my Martin CLS electronic boxes and an On Line on the ESL panel leads. The sound just became congested and lifeless. I hope this info helps.\ntimrhu\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,779 posts\n09-11-2006 at 12:22am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThey definitely work if you believe they work.\nrlxl\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n92 posts\n09-11-2006 at 12:30am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDitto Mrderrick's comments, especially amps. The lesson here is to experiment and listen. They are system and component dependent.\ntarsando\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n578 posts\n09-11-2006 at 04:32am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf you believe they work then I believe they work\nwellfed\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n690 posts\n09-11-2006 at 04:45am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nJust think of all the things that won't work if you don't believe.\nrwwear\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,917 posts\n09-11-2006 at 11:40am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYes, they make excellent paper weights.\nrcprince\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,103 posts\n09-11-2006 at 12:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhile I figure that they may indeed work for some applications, on the output and input transformers of my old Jadis JA80 amps they degraded the sound very slightly, and they did not make a difference of any sort on top of my Forsell transport (which surprised me, because that's the one piece in my system that seems to show changes most dramatically), so I gave them back to the guy who lent them to me. So I think Rlxl is right; I would not buy unless I could get a refund.\npmrodier\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n38 posts\n09-11-2006 at 02:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have 13 stones and 23 on-line pair. Yes, they do work. I use two at the subpanel where my dedicated lines emerge. This is a huge help. I experimented with 1-3 stones on my APL 3910, my Theta Citadel monoblocs, my Vandersteen 5a speaker on the top front tweeter(one on-line each), and my AudioexcellenceAz Power Wing(2 stones). I actually find that three stones on each works even better than one or two.\nThe on-lines work tremendously on all wire terminations. I have 1-2 at each termination. Some are presently on loan to my video system where they greatly improve the audio/video of my Tivo DirecTv HR 10 HD receiver.\nI have yet to experience any negatives, but a local friend feels there is a small dryness along with the greatly reduced noise floor. He is currently using only on-lines in his system.\nI hope this helps.\njax2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,031 posts\n09-11-2006 at 02:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI believe if you believe in the belief that there is a possibility of believing something will work in the real world, and that your belief is what makes that thing work....wait a minute, I lost track of my beliefs...the whole thing's just unbelievable anyway.\nSnatch the Shakti stones from my hand, young Grasshopper, and it will be time for you to leave.\nMarco\nPost removed\nAug 12, 2015\ndjones1915\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n53 posts\n09-11-2006 at 03:33pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThey work well for breaking windows in old abandoned buildings!\ntrelja\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,226 posts\n09-11-2006 at 04:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNothing funny about it, Grant. Now, a few other words come to mind...\nyioryos\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n723 posts\n09-12-2006 at 03:48am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAnybody experiment with Shakti stone on his head while listening?Any difference?\nPost removed\nAug 12, 2015\naudiofeil\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,011 posts\n09-12-2006 at 01:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThey work as well as the audio clocks and audio duplex covers. Maybe better.\ndon_s\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n271 posts\n09-12-2006 at 03:22pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have finally found a use for \"Stereophile\" magazines. I place two stacks of four mags each on top of my modded Elite player. Definitely improves bass impact and definition and foucs/definition of vocals. Drums are more solid and an upright bass is more defined.\nI am not sure if the improvement is from dampening or(and?) stray noise protection but there definitely is an improvement. I receive similar improvement from Nordost Pulsar Points so I think it may be resonance related.\nI do not have any \"Absolute Sound\" or \"Hi-Fi\" mags around to compare to but I am sure they would make even more improvement.\njax2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,031 posts\n09-13-2006 at 02:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI do not have any \"Absolute Sound\" or \"Hi-Fi\" mags around to compare to but I am sure they would make even more improvement.\nI have some rare NOS Sears Roebuck catalogues from the 1960's that I was just about to list here on A'gon. Ping me off the list and we can strike up a deal!\nMarco\nrapogee\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n256 posts\n11-19-2008 at 09:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI just sold all of mine and went for a short vacation.\nThat was the best thing ever!\ncyclonicman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n693 posts\n11-19-2008 at 10:26pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYioryos, it doesn't work that way, but I find that if you stand erect about 6 feet from the speakers and hold one stone in each hand, it improves your blood circual","title":"Shakti Stones Do they actuall work guys.","url":"https://forum.audiogon.com/discussions/shakti-stones-do-they-actuall-work-guys"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n190705-188464\nEdit\nHas a Power Conditioner Improved Your Sound?\nMy system sounds great. When it is on and not playing music it is dead silent. I tried a PowerPlant Regenerator and it didn\u2019t improve my sound. Actually it slightly constricted my soundstage. Like most audiophiles I\u2019m always searching for that next improvement and wonder if a power conditioner might add something to my SQ So before I start auditioning any power conditioners on a 30 day trial I\u2019d like to know if anyone has experienced a significant improvement to their system, what that improvement was and which power conditioners they used. Right now I\u2019m considering the Isoteck brand. Possibly the Aquarius or Electra. I\u2019d most likely keep the amp plugged into the wall and connect my Streamer and DAC to the conditioner.\njfrmusic\n07-20-2024  5:15pm\nNext \u203a\nLast \u00bb\n97 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nczarivey\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,946 posts\n07-20-2024 at 05:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nmy PC serves more like guard dog and does EXCELLENT job... the good old Panamax MAX1500 having it since past century.\nhilde45\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,101 posts\n07-20-2024 at 05:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAny thoughts about how to test if there is much noise or interference to begin with? If you don't have a problem, a solution won't do much more than drain your wallet.\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n07-20-2024 at 05:22pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYes power conditioners have always improved the sound of my system. This is true for the vast majority of people but not all. There is a very small minority that seem to live in exceptional locations with good power.\nI have used a power conditioner for over 30 years in different locations. Isotech is an excellent choice as is Shunyata. You want to plug your amp directly into an outlet (preferably a direct line) and the rest of your equipment into a power conditioner in a different (preferably a direct line).\nJust a comment on noise. Noise in audio is seldom heard directly\u2026 it is not a crackle or something you can focus on. It is the noise floor that unless you have a lot of experience is pretty invisible until it is lowered. The background becomes darker and you can hear deeper into the music. A power conditioner will also remove a layer of subtle distortion and also make the music more dynamic.\njetter\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,165 posts\n07-20-2024 at 05:31pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhen power conditioner threads come up someone usually makes a statement that one of the functions of a well thought out transformer is to eliminate or at least significantly lessen the impact of noisy power on sound quality.\nThen inevitably no one continues discussing this concept further.\u00a0 Can someone expand on whether the elimination of noisy power\u2019s impact on sound is, in fact, one of the functions of a good transformer.\nThis post was not written by AI.\naudiotroy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,001 posts\n07-20-2024 at 07:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWe have tested many of the leading power conditioners regenerators are not the panacea they do truncate dynamics\nwe have found\u00a0 isoteks and audio magic products\u00a0 conditioners really improve a systems performance without limiting dynamics\nDave and Troy\nAudio Intellect NJ\nIsotek and Audio magic dealers\ndwcda\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n116 posts\n07-20-2024 at 09:34pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe PS Audio Regenerator 12 has a dial on its home screen that shows improvement on a scale from 1x to 100x. Typically they show around 10+x. Has anyone hooked up a PS Audio\u00a0 12 to a PS Audio 12? I'd expect to see the improvement of 10x on the first unit & 1x on\u00a0 the second. If the second shows 10x that would lead me to believe that the meter could be just pasted onto the unit.\nkennymacc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n747 posts\n07-20-2024 at 10:40pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAs quiet as your system may seem without using a proper Power Conditioner, believe me, it can get even quieter.\u00a0 Over the years, I've tried\u00a0 several conditioners, and the one that ended up being a keeper for me was the Audioquest Niagara 3000.\u00a0 The Audioquest Niagara 3000 is a non-power restricting device that has two special \"High Current\" plugs on board, which are designed especially for amplifiers.\u00a0 I have everything plugged into my Niagara 3000, including my amplifier, with excellent results.\u00a0 If the Niagara 3000 is beyond your budget, just go for the the Niagara 1200, which is just a downsized version of the Niagara 3000.\u00a0 I'm pretty sure that my Niagara 3000 will be my last Power Conditioner.\u00a0 Happy listening.\ndeep_333\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,544 posts\n07-21-2024 at 01:10am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI use a Niagara 5000 and 7000 in a couple of my rigs.\nIf you don\u2019t feel like spending all that much, get the powerquest 707.\nIn addition to the filters and protection, these units maintain/supply a current reservoir on the high current outlets for your power amps. It is like an adrenalin shot for any poweramp and can make your amps slam like crazy on demanding tracks at high spls. After you get used to it, you won\u2019t be going back.\nP.S. Only the Niagara 3000, 5000, 7000 and the Powerquest 707 offer the above mentioned. Other AQ models don\u2019t.\nblueunicorn\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17 posts\n07-21-2024 at 02:10am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI had my doubts that adding a power conditioner would substantially improve my already highly resolving system. However, I recently decided to try a Shunyata Denali. It proved to be a major upgrade. It's not going back. Improved soundstage, imaging, detail, and separation. YMMV\nnonoise\nDetails\nDiscussions\nPosts\nThis discussion\n11,226 posts\n07-21-2024 at 02:22am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI, too, had my doubts about power conditioning until I tried a Audioquest Niagara 1200. It did what ghdprentice mentioned, in revealing a lower noise floor allowing for more info to come forward, completing the picture, so to speak.\nBefore that I tried Brickwall and some other brand that when compared, sounded better going straight into the wall outlet.\nAll the best,\nNonoise\nmikhailark\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n448 posts\n07-21-2024 at 05:23am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI primarily use them as surge protection. I have lighting/surge protection for the house, but add more for expensive equipment. Sound improvement? Haven\u2019t noticed. YMMV. There are no a big RFI or EMI sources where I live and mains are clean. Nothing fancy, mostly in $200 range.\nBut effect may also depend on type of your equipment and how good are their power supplies. Some tube gear has pretty simply power supplies and may be more sensitive to the noise.\nlalitk\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,196 posts\n07-21-2024 at 05:34am\nCopy Comment URL\nRep","title":"Has a Power Conditioner Improved Your Sound?","url":"https://forum.audiogon.com/discussions/has-a-power-conditioner-improved-your-sound"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n165116-159058\nEdit\nTube testing in the SF Bay area?\nI'm bringing my Rogue 99 back online after almost twenty years of storage and am wondering if there is someplace reasonably local where I can have my tubes tested.\noldskoolmark\n03-14-2021  4:07pm\n9 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nhudsonhawk\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n137 posts\n03-14-2021 at 05:41pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019d be more worried about the caps than the tubes after 20 years in a box.\nruss69\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,579 posts\n03-14-2021 at 06:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf it was working before you put it away, I would not worry about the tubes.\noldskoolmark\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4 posts\n03-14-2021 at 07:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSounds like maybe 'if it ain't broke, don't fix it'. Love the way this thing sounds.\njjss49\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,943 posts\n03-15-2021 at 04:26am\nCopy Comment URL\nReport Comment\nEdit\nDelete\ni agree with the comments made\ntubes rarely fail when stored... old capacitors are another matter\ndon't know where you are in the sf bay... i have a great tech who knows his way well around tube amps and can test tubes as well, in san rafael\n(i personally have a very good tube tester as well, can easily test your 6sn7's)\nmessage me if you would like the contact\ntubes108\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n153 posts\n04-02-2021 at 05:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\njjss49. Who is the tech in San Rafael and where is he/she located? I was unaware of a good tech in the area. Thanks.\njjss49\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,943 posts\n04-03-2021 at 04:33am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nchris b on mission st above 5th\nprismvineyards\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n26 posts\n07-24-2024 at 01:18pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWould anyone be interested in an informal Bay Area HiFi chat group? If yes, please message me and I'll add you.\ngmosley\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n139 posts\n02-19-2025 at 10:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHello\u00a0 Mr.Prismvineyards.\nI would love to hear more about your Bay Area HiFi chat group and be included in the group.\njim94025\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n58 posts\n07-23-2025 at 10:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBay Area HiFi chat group?? Join the Audiophile Foundation, formerly the San Francisco Audio Society. We have lots of different forums on our website and a regular virtual Friday evening \"Happy Hour\" where we informally discuss a number of audio related subjects while imbibing our favorite libations. Open to anyone, anywhere, but most of us live in the Bay Area.\nMore to discover\nTesting the Yamamoto HS-4 Carbon Fibe...\nAudio compatability and testing\nNew Preamplifier Testing (Poor sound)\nTesting Western Electric on a 752a Hi...\ntesting a crossover\nVolumio Primo Plus\nAyon Audio S-10IIxs\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Tube testing in the SF Bay area?","url":"https://forum.audiogon.com/discussions/tube-testing-in-the-sf-bay-area"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194103-204223\nEdit\nFaulty powered speaker - repair or trash?\nI have a Kanto SYD 6 speaker that has been faithfully providing me with TV audio (via optical) and some music (via bluetooth) for about 7 years. It recently blew its fuse... when I replaced the fuse, it powers on, but every time I try to turn it on from standby mode it waits a few seconds then puts itself back into standby mode.\nI've attached pics of the class D amplifier unit built into the speaker. I'd love some opinions on whether it is worth my while attempting to get this repaired. I also wonder whether there would be some way of attaching separate amplification to the drivers - if this amp is shot. The unit has two pairs of wires that lead to the speakers via spade terminals. They seem to come from different places on the control board, and interestingly, each pair of wires seems to lead to one mid driver and one tweeter (so there might be a crossover of some kind inside the box?)\nKanto have been totally unhelpful... the speaker is discontinued and they offer no parts, service or schematics.\nAnyway, pics attached and any thoughts welcome.\u00a0 Images at links below:\nhttps://ibb.co/KzhhvHS8\nhttps://ibb.co/kVrjSH1P\nhttps://ibb.co/G38KR2yy\nhttps://ibb.co/mCNbV7CP\nhttps://ibb.co/j9F5btm7\nhttps://ibb.co/j983GJ5v\ncharliefreak100\n04-16-2025  5:44pm\n4 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nlordmelton\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,190 posts\n04-19-2025 at 11:20am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTreat yourself and buy something new and up to date.\nceltic66\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,974 posts\n06-23-2025 at 03:08am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nLove Kanto, but\n@lordmelton\nrendered\ncorrect assessment. \u00a0Move on. \u00a0Deposit body at the next hazardous materials collection site/date. \u00a0Best of luck\nkennyc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,146 posts\n07-21-2025 at 01:58am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nReplace. If future maintenance is a concern, buy a brand that satisfies\ntomcarr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,819 posts\n07-23-2025 at 06:54pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAnother +1 for buy something new\nMore to discover\nDoes a Powered Sub need a Preamp?\nHi,can i use selfpowered speaker with...\nSmart TV digital output to Powered Sp...\nCan you use powered monitors to a pea...\nPower supply successfully powered up....\nVandersteen Model 2c ii signature\nAurender N10\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Faulty powered speaker - repair or trash?","url":"https://forum.audiogon.com/discussions/faulty-powered-speaker-repair-or-trash"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195187-79975\nEdit\nGround loop hum\nMy technics turntable developed a ground loop hum when I got a new preamp Rogue RP7 and power amp Aesthetix Atlas. \u00a0I had a ground wire connected to the turntable and grounded it to each, one after the other when the first had no effect. Neither did the second grounding. It has been suggested I ground it to both at the same time which I haven\u2019t tried yet. Any other suggestions? \u00a0I am running the system from two dedicated 20 amp lines. Running Vandersteen Quatro wood ct speakers. \u00a0Thanks in advance.\nkavakat1\n07-20-2025  6:16am\n35 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\noddiofyl\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,644 posts\n07-20-2025 at 01:30pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDid you try a 3 prong to 2 prong cheater to lift any grounds?\u00a0 Also if you have a cable box in that system/ room unplug it and the coax to it while troubleshooting\nkavakat1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n144 posts\n07-20-2025 at 03:54pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNo cable box. I dont think it\u2019s the room as there was no hum when I had my NAD amp running the system. Only started w the new equipment. I\u2019ll try the cheater.\nPost removed\nJul 20, 2025\nkavakat1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n144 posts\n07-20-2025 at 04:57pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMike\nsee where?? Nothing attached.\njea48\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,944 posts\n07-20-2025 at 05:34pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@kavakat1\nA ground loop hum means there is a difference of potential, voltage, between\u00a0 two AC ground points. Result 60Hz current traveling in the ground loop circuit. Result 60Hz hum.\nHow did you verify it was the TT causing the ground loop? Disconnect the TT ICs from the\u00a0\u00a0Rogue preamp and the hum stopped?\nPost removed\nJul 20, 2025\nkavakat1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n144 posts\n07-20-2025 at 06:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOnly Jim\u2019s when preamp is set to the turntable. \u00a0O other inputs hum.\nkavakat1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n144 posts\n07-20-2025 at 06:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOnly hums. Not Jim\u2019s\njetter\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,165 posts\n07-20-2025 at 06:34pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe only time I had a hum that sounded like a ground loop from my turntable was when I was using a set of interconnects that were not properly insulated for turntable use.\u00a0 Morrow literature made it clear to use their phono specific interconnects for turntable use but I thought I would try my non-phono interconnects anyway and hence the hum.\u00a0 I then installed \"regular\" insulated interconnects, and the problem vanished.\nPerhaps your new preamp is more sensitive to this.\nTry a different set of interconnects.\njea48\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,944 posts\n07-20-2025 at 06:47pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@kavakat1\nsaid:\nOnly Jim\u2019s when preamp is set to the turntable. \u00a0O other inputs hum.\nI don't think your problem is caused by ground loop. If a ground loop, It should hum even when the preamp is switched to another source input if the TT is connected to the preamp.\nDoes the hum sound like this.\n60HZ hum\nDoes the Rogue preamp have a built-in phono preamp?\nWhat model\u00a0Technics turntable do you have?\njea48\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,944 posts\n07-20-2025 at 08:26pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@jetter\nsaid:\nThe only time I had a hum that sounded like a ground loop from my turntable was when I was using a set of interconnects that were not properly insulated for turntable use.\u00a0 Morrow literature made it clear to use their phono specific interconnects for turntable use but I thought I would try my non-phono interconnects anyway and hence the hum.\u00a0 I then installed \"regular\" insulated interconnects, and the problem vanished\nThat would explain why when the\u00a0Rogue preamp was set to another input there is no hum. Phono ICs are not shielded and are picking up EMI from a near by non shielded power cord or some other EMI producing AC source.\nmuvluv\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n105 posts\n07-20-2025 at 11:54pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPlug everything into just 1 outlet that is on 1 circuit, if there is still a hum something may be loose somewhere\nyoyoyaya\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,087 posts\n07-21-2025 at 12:28am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@OP As the RP-7 is a line level preamp - what are you using as a phono stage and how are you grounding that?\nkavakat1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n144 posts\n07-21-2025 at 12:47am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSo a ground loop hum must be heard no matter which source is playing thru the preamp? Is that correct? I have a \u00a0Musical Surroundings Phonominal II+ \u00a0phono preamp.\nkavakat1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n144 posts\n07-21-2025 at 01:04am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYoyoyaya please see my last. \u00a0 The phono pre is not grounded. I\u2019ll try that. \u00a0Thanks!!\nkavakat1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n144 posts\n07-21-2025 at 01:20am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYoyoyaya\njust tried grounding phono preamp to rogue preamp\u2019s cabinet. No luck. \u00a0The 60hz noise goes up and down with volume knob. \u00a0Can hardly hear it at low levels. \u00a0All are plugged int a surge-X surge protector. \u00a0But once again, had no problem with former NAD amp. \u00a0Appreciate your suggestions.\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n07-21-2025 at 01:29am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDo you have parts of your system plugged into a different duplex receptacle from the rest? That can create a ground loop. Plug everything into one (you'll have to use a power conditioner or power strips). If it goes away... that the problem. I had one long ago. I put in two direct lines and obviously that fixed it.\nkavakat1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n144 posts\n07-21-2025 at 02:49am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nEverything is plugged into one outlet via a surge-x surge protector\njea48\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,944 posts\n07-21-2025 at 02:50am\nCopy Comment URL\nReport Comment\nEdit\nDelete\njust tried grounding phono preamp to rogue preamp\u2019s cabinet. No luck.\nI assume the TT tone arm is grounded to the phono preamp ground terminal.\nSo a ground loop hum must be heard no matter which source is playing thru the preamp? Is that correct?\nThe 60HZ ground loop 60Hz current is carried through the ICs, through the signal grounds of the equipment. A difference of potential, voltage, must exist between at least two points for current to travel in a closed circuit. Therein ground loop.\nDid you try another Line level input on the Rogue preamp?\nDoes the TT use a 120V 3 wire grounding type cord and plug? If so, unplug the cord and plug from the wall outlet. Check for hum.\nDoes the hum sound like this?\n60HZ hum\n60hz noise\ngoes up and down wi","title":"Ground loop hum","url":"https://forum.audiogon.com/discussions/ground-loop-hum-8"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194909-199139\nEdit\nAt an upgrade path fork in the road\nSo I have two systems at home. The basement rig, which is an all Focal/Anthem HT setup with streaming capability, and the living room two channel setup.\nRecently my Odyssey Khartago in the two channel failed, which created a discussion about a new upgraded amplifier. I\u2019m having some \u201cupgrade snowball\u201d ideas, however.\nThe two channel setup is:\nRega P8/Apheta3\nRega Aria Mk. 3 phono amp\nPrimaluna Dialogue Pre\n(Hitherto) Odyssey Khartago (Adcom GFA 545 currently sitting in)\nRotel 1072 CD spinning into\nSchiit Yggdrasil A1 DAC\nGoldenear Triton Ones\nAnticable IC\u2019s\nAQ speaker cable\nWhat I want is to move my digital out of spinning platters (while retaining the option of doing so) and into streaming off a drive with an iPad interface. I\u2019ve already ripped every CD to FLAC.\nI need to replace the power amplifier but am considering going instead into an integrated DAC/streamer in order to simplify things. The number and options in this regard are making my head spin. This also leaves the PL out of the loop and I\u2019m not sure how I feel about that. I\u2019m very fond of its sound.\nThe new wave seems to be all in this direction so before I drop big $$ I think I\u2019d better figure out just what direction I want to go in. \u00a0My listening tastes run from folk to rock to jazz, maybe a smattering of classical. I will ultimately upgrade my speakers, so I\u2019m looking for amplification that can handle about down to 86 dB and is 4 ohm stable. My listening levels don\u2019t generally get much higher than 90 dB.\nAny help or suggestions would be great. I\u2019m not even sure where to start.\npvnasby\n06-24-2025  6:09pm\n3 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nmattmiller\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,620 posts\n06-24-2025 at 06:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThats funny because of all the gear you have I Honestly think its the Prima Luna holding your system back. The PL is good but its too warm and lush and velvety sounding , I recommend auditioning at least three pre amps in your system, this will bring the biggest change in sound.\u00a0 Also I would buy a Adcom GFA 555 or 555II, its a design by Nelson Pass and is one of the sleeper amps from decades ago so you can find them cheap in great condition, usually around $300-500. AND if you find a OPPO universal player/DAC/streamer this is the best way to spend under $1000 and get a player worth 3-4 times that. They dont make Oppo BDP 105\u2019s anymore but you can find them used, BUY ONE! its a amazing machine.\nMatt M\nkennyc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,146 posts\n07-22-2025 at 08:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThis is a tough ask because you\u2019re completely changing your Sonics requirements in an all-in-one integrated/DAC/streamer - we cannot tell you what you\u2019ll subjectively like.\nAlso, quality DACs are usually stand alone. \u00a0Many DACs within an integrated are built to a cost point, so most seem likely a sonic afterthought. \u00a0The OPs Yggy is a high-value audio component which can match/beat many integrated built-in DACs. High-end integrates with built in streamers are somewhat rare.\nPerhaps a Hegel H400 might meet your requirements - very good DAC, power, musical, lots of positive Hegel reviews\npvnasby\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n42 posts\n07-22-2025 at 09:57pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFunny you should mention the H400 as that was the very solution I have been considering.\nMore to discover\nupgrade from NAD S100 proprietary pho...\n$5k Upgrade\nWhich component upgrade will produce ...\nUpgrade My Turntable - How Much Do I ...\nUpgrade from Spica TC-60's.\nVandersteen Model 2c ii signature\nFocal 36 MONTH FINANCING\nAntipodes Audio K40\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"At an upgrade path fork in the road","url":"https://forum.audiogon.com/discussions/at-an-upgrade-path-fork-in-the-road"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195212-120528\nEdit\nSeeking help with AudioDesk Pro X Vinyl Cleaner Repair\nHi all,...I\u2019m looking for recommendations or contacts for someone with experience in\u00a0 repairing an Audiodesk Vinyl Cleaner Pro X unit. Mine is no longer drawing water during the cleaning cycle, though the rollers still engage \u2014 so it\u2019s not completely dead, but clearly needs service.\nI\u2019ve come across references to users like \u201cdecibell\u201d in older threads who have repaired their own machine, but I haven\u2019t been able to reach him directly.\nCan anybody help?\nvoodoofunk\n07-22-2025  4:52pm\n0 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nMore to discover\nSeeking Wadia 16 Server Board\nSeeking Advice to Improve My Audio Sy...\nSeeking speakers under $3K for 10x12 ...\nseeking recommendations for melodic ,...\nWithin a 30 day trial with Van Alstin...\nAyon Audio S-10IIxs\nVandersteen Model 2c ii signature\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Seeking help with AudioDesk Pro X Vinyl Cleaner Repair","url":"https://forum.audiogon.com/discussions/seeking-help-with-audiodesk-pro-x-vinyl-cleaner-repair"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195158-133364\nEdit\nUsing optical Ethernet input for your Hifi Rose RS130\nThis conversation is very specific for RS130 owners. Nowhere on the Internet (and I never got a response from Rose customer support) does it tell you what components to purchase to use an optical instead of a copper Ethernet input to the RS130. The subject gets into data center technology, which I had no knowledge of. So, after lots of trial and error and purchasing the wrong components, I present this as a guide to help others find an easier path for using an optical input for their RS130.\nAfter several weeks of trial and error, here's what I discovered. Experts, please correct me. For those of you who want to use an optical INPUT to the Rose RS130, here's the TL;DR. You need a:\n1. **Single-mode base1000-x copper to optical fiber transceiver,** The \"-X\" stands for anything with an \"X\" in it, like base1000-LX. e.g.,\n10GTek Fiber to Ethernet Media Converter, Gigabit Single Mode SFP LC Converter, 1000Base-LX to 10/100/1000M RJ45, SMF, 1310nm, up to 20km (12.4miles)(https://www.amazon.com/dp/B07B9XFC9L?ref=ppx_yo2ov_dt_b_fed_asin_title)\n2. **Single-mode LC to LC fiber optic cable** (1 or 2 meters). e.g., [FLYPROFiber- 1M/3ft OS2 Single Mode LC to LC Fiber Patch Cable, SM Singlemode Duplex, SMF Fiber Optic Cable Cord, 1G/10GB, 9/125um, LSZH](https://www.amazon.com/dp/B08B3JT2V3?ref=ppx_yo2ov_dt_b_fed_asin_title)\n3. Two **SFP (not SFP+) LC modules** that work with your transceiver--make sure it says something like, \"compatible with TP-link,\" if that's the maker of your transceiver. \u00a0 e.g., H!Fiber 1.25G Single Mode SFP LC Module, 1000Base-LX/LH Fiber Transceiver. NOTE: the transceiver listed above comes with an SFP module, so you only need to purchase an additional SFP to put into the RS130.\nI hope this helps. (I never got a response from ROSE customer support.)\nMisc basics:\n1. To insert or remove an SFP module, pull down on the bar at the back (outside) of the module. If you're inserting it into the RS130, insert it--push it kind of hard until it clicks, raise the pulldown bar to its original (up) position, and insert the cable--make sure it clicks into the SFP. To remove the module, remove the cable by pushing down on the button on the fiber cable that locks it into the SFP, pulling down the bar, and pulling the SFP from the RS130.\n2. There are single-mode and multi-mode fiber cables, transceivers, and SFPs. They must all be one or the other. Single-mode is supposed to sound a bit better than multimode. I listened to both. There is a SLIGHT improvement for single mode, but it's not dramatic. In part, this depends on how revealing your stereo system is. The price for the two is about the same so, just go with single mode.\n3. About fiber cables, and this will show you how much of a neophyte I was, they come with 4 small white plugs at both ends of the cable. Remove those before plugging them into the SFPs (unlike what I did, the first 5 times!).\n4. Is it worth changing from copper to optical Ethernet input? YES! The cost is low\u2014$50 for the whole set of optical components. Either your system sounds better than Ethernet over copper, or it doesn't. If not, return the optical parts to Amazon. In my system, the answer is definitely yes, the optical components improve the sound quality. I notice increased resolution and clarity. But that's just in my system; results will vary. Test yours carefully.\n5. Use good copper Ethernet cables to go from your router to your transceiver. The Ethernet cable from Morrow (cheap) provides terrific results and has a 60-day return policy.\n6. OS1 and OS2 are designations for single-mode fiber cables. OS2 is better than OS1. OM1, OM2, OM3, OM4, and OM5 designate multimode fiber cables. OM5 is the best; OM1 is the worst, and they're backward compatible.\nThat's it! Mystery solved! Enjoy your RS130 and let the music play on!\npennpencil\n07-17-2025  3:43pm\n7 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n07-17-2025 at 04:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHey OP:\nSo it looks like you have an SFP port.\u00a0 These ports are configurable thanks to the plug-in nature with anything from Ethernet to fiber.\u00a0 Here\u2019s a\nlink to possible options\nOn your router side, you can use an\nEthernet to fiber converter\nor you can get an\nAsus router with a built-in SFP port as well\nTypical fiber comes with SC or LC connectors and cables can have one of each on either end.\nI suggest using LC connectors and cables as they are physically smaller and more convenien\nSo, overall my recommendation is to use SFP modules with LC connectors and LC cables.\u00a0 Of course the Ethernet/fiber converter is super affordable but if you have the desire to reduce clutter and need to upgrade your router anyway the Asus router with the right SFP module is a cleaner but much more expensive alternative.\u00a0 Personally I use Ethernet/fiber/Ethernet conversion but mostly as a safeguard against lightning coming in on the entrance.\nGood luck!\nErik\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n07-17-2025 at 05:50pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSorry, should have been more clear.\u00a0 You should use multimode fiber with LC connectors unless you want to reach a mile distance. :)\npennpencil\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n145 posts\n07-18-2025 at 02:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@erik_squires\nThanks for your thoughts! Yes, LC to LC is the way I went. I don\u2019t know if I made it clear above that I (finally) got the optical input working. The router you mention is interesting in that it has an SFP port! It\u2019s an SFP+, which, apparently, would hurt the RS130, which requires SFP. My copper Ethernet cable from Morrow comes from a mesh satellite. I guess you\u2019re saying that if I had an option of a router or satellite with an SFP port, I\u2019d get a better SQ. Interesting. One thing I learned is that my service provider (Spectrum) doesn\u2019t permit more than one modem in the house (one works, a second won\u2019t). If and when I upgrade my wifi network, I\u2019ll look for a system that has an SFP port.\nAs for single-mode and multimode, there are significant differences that matter for data centers and transmission lines, but maybe not for audio. Single mode uses a higher bandwidth, a single core, and can transmit light for a 1000 miles - whatever. Multimode uses multiple fiber cores, a lower bandwidth, and is used for shorter runs---still miles in length. Both support the 1-2 meters we need between our router and streamer--although, I guess you could run a fiber cable all the way from your router (instead of coming from a mesh satellite) without degradation or electromagnetic interference. Anyway, how any of these differences influence the sound quality, I don\u2019t know. I just go with my ears. I read that \"some audiophiles find single mode provides a superior sound.\" It was very anecdotal. I ended up trying multimode first because I didn\u2019t know what I was doing. (\"Oh, OM4 must be better than OS2 because 4 is bigger than 2!\" -nah...OM is multimode, OS is single mode.) I found MM did a great job creating a crisper SQ in my system, but finally got single-mode working. ","title":"Using optical Ethernet input for your Hifi Rose RS130","url":"https://forum.audiogon.com/discussions/using-optical-ethernet-input-for-your-hifi-rose-rs130"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194997-207011\nEdit\nTT/Cart Pairing\nAny opinions on the Ortofon Quintet Blk cart paired w/Music Hall 9.3 TT? Using a McInt MP100 p stage.\nr2_hifi\n07-02-2025  8:03pm\n2 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nyogiboy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,232 posts\n07-03-2025 at 06:57pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThat combination should be fine!\nkennyc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,146 posts\n07-18-2025 at 01:44am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n+1 should be fine\nMore to discover\nHiFi newbie - Thoughts on pairing vin...\nSpeaker to amp pairing\nQuestions about Mcintosh tube amp pai...\nPairing Planar Speakers With A Subwoo...\nPairing different amps , pre-amps , c...\nAurender N10\nAyon Audio S-10IIxs\nAuralic Aries G2.1\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"TT/Cart Pairing","url":"https://forum.audiogon.com/discussions/tt-cart-pairing"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195156-197213\nEdit\ni have a ps audio power plant p15 230v can i convert it to 110v?\nSo Im in possession of a ps audio p15 power plant australien version but i live in North America Is There a way to convert it to a north american curent?\nkufcio2076\n07-17-2025 12:41pm\n2 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\njea48\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,944 posts\n07-17-2025 at 02:43pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI would suggest you contact PS Audio Tech support.\nPaul\u00a0 \u00a0 PS Audio CEO\nIf memory serves, yes, that is true. In all Power Plants, we use the same transformer for both 120 and 220 operation. The proper windings are selected. On a more modern\nor P15, that is handled in a wiring block inside and has to be done at the factory or the distributor. In the older PPP the different power cartridges handled that.\nChanging Powerplant Premier input voltage from 110v to 220v\nYou should be able to change the primary winding from the higher voltage to 120Vac.\u00a0 (Therein, 230V to 115V / 240V to 120V.)\nIf you have a good reputable Service Tech in your area he should be able to reconfigure the primary winding.\nkufcio2076\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4 posts\n07-17-2025 at 04:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nok thank you\nMore to discover\nStreaming through upconverting DAC - ...\nAccuphase E-480 convert voltage from ...\nReview: Kora Electronics Hermes DA co...\nMax audio converter FLAC to AIFF\nReview: Ultra Fi DAC-41 DA converter\nVandersteen Model 2c ii signature\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"i have a ps audio power plant p15 230v can i convert it to 110v?","url":"https://forum.audiogon.com/discussions/i-have-a-ps-audio-power-plant-p15-230v-can-i-convert-it-to-110v"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194998-198816\nEdit\n6SN7 tubes and variants question.\nI was reading on something called Head Fi Focal, never heard of it before. I was just trying to find info on the 6SN7 variants. It said that GT versions are different than GTA and GTB versions and that you could cause damage to gear that was designed for the later versions, GTA/GTB types.\nI use a Cary SLP 98P F1, which came with all EH 6SN7 tubes, no other nomenclature. Being modern, I can only assume that they are basically the same as GTA/GTB of the older tubes. I am currently using Sylvania GTB's and Raytheon GTB's. I have several others to try, including VT231's, GT's and GTA's. Is there any harm in using the older GT's or others from the 40's? It seems to me that these are favorites of many. I'd never read this before, just wondering what anyone here might think.\nThe claim was that the output of the GT version is 2.5 and the output of the GTA/B's is 5 and that damage could occur if you use the GT's in something designed for the later versions. I had never heard this before and it looks to me as though people interchange them all the time.\u00a0 Thanks for any advice.\nBill\nbillpete\n07-02-2025  9:20pm\n14 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ntomcy6\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,689 posts\n07-03-2025 at 01:54am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHere's what AI has to say about it:\nNope \u2014 using a\n6SN7GTA or GTB\nin a component designed for\n6SN7GT\nis actually\nsafe\nand often beneficial. Here's why:\n\ud83d\udd27 Compatibility Breakdown\n6SN7GT\n: The original version, typically rated for up to\n300V\nplate voltage and\n2.5W\nplate dissipation.\n6SN7GTA\n: An upgraded version with\nhigher ratings\n\u2014 up to\n450V\nplate dissipation.\n6SN7GTB\n: Same electrical specs as GTA, but with a\ncontrolled heater warm-up\nfor better reliability in series heater circuits (like in TVs).\n\u2705 Why It's Safe\nGTA and GTB are\nbackward-compatible\nwith GT. They\u2019re essentially more robust versions.\nIf your component is designed for GT, it will\nnot stress\na GTA or GTB \u2014 in fact, those tubes will likely run cooler and last longer.\nreverse is not true\n: using a GT in a circuit designed for GTA/GTB could over-stress the tube and cause failure.\nSo go ahead and roll those GTA or GTB tubes into your GT-designed gear \u2014 your amp will thank you. Want help picking a great-sounding pair?\nimmatthewj\nDetails\nDiscussions\nPosts\nThis discussion\n3,300 posts\n07-03-2025 at 02:13am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@billpete\n, I don\u2019t know if any of this will be helpful or not, but just in case I will paste some text from some emails that a tube guru from another forum sent me as he took me under his wing and blessed me with several pairs of vintage 6sn7s.\nThe W in WGTA is the designation for \"ruggedized\" construction. Thicker mica supports, extra support rods, smaller bottle ... all supposed to reduce the effect of physical shock/vibrations.\u00a0 The GT is the designation for the bottle shape, and the A (and B for that matter) designates uprated plate voltage capability.\u00a0 The B further designates the serial heater/filament connection capability.\nEnjoy the ride, we\u2019ll sort out the money.\u00a0 The RCA\u2019s are an interesting tube.\u00a0 No highs, no lows, but boy do they do midrange and 3D.\u00a0\u00a0Absolutely\u00a0not the tube for rock \u2019n roll.\u00a0 Small ensemble acoustic jazz, or acoustic vocal, or chamber music is their forte, IMO.\u00a0 The TungSol GTB\u2019s (one of those is marked A and one is B, but they are the exact same) and the Sylvania GTA\u2019s are okay tubes.\u00a0 The TS are kind of bass heavy for my taste, and I could probably live with them or the Syl GTAs if I didn\u2019t know there was better out there.\u00a0 I found out that the only difference between the GTA and GTB is that the GTB is capable of having the filaments connected in serial in the case of using multiple 6SN7s in a circuit. Furthermore, TungSol built all their 6SN7s at that point in time (late 1950\u2019s) to the GTB spec, and then labeled them as A or B depending on what spec the client order called for.\u00a0 The GTB always works in a circuit needing GTB, and it will also work perfectly in a circuit where there\u2019s no requirement for the\u00a0filaments\u00a0to be connected in serial.\u00a0 Why make two kinds when one will do both duties?\nAnd, for what it may be worth, I have rolled pairs of both the GTAs and the GTBs in the balanced input sockets of my SLP05 with no ill effects.\nbillpete\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n396 posts\n07-03-2025 at 03:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@tomcy6\nThanks. This is essentially what I read. This seems to agree with what I read on Head Fi, that using a GT or early tube in something that was designed for the later GTA/GTB types, could cause problems. What I read made it sound like you could damage your component, where this says that you may just ruin a tube. Some of these early tubes bring some pretty silly money and the gear is certainly not cheap. I'd hate to ruin either one.\nUsing a GTA or GTB tube in an older design piece of gear that was designed around the GT types is safe but this is not my situation. Still, tons of people have talked about putting the older GT's, W's etc. in modern components and they end up being their favorites. Most notable is probably the Tung Sol BG RP, seems to me the 40's or maybe early 50's. Can't remember but I'm guessing these are the older GT type. I have not taken that plunge yet, if you find them they generally run $200 each or more. So far, I'm getting plenty of enjoyment from tubes that have been $50 each or less.\nThere are several tube rolling threads several years back about the very preamp that i use, as well as it's other iterations. The tube compliments are the same in all of them, simply saying 6sn7 but always supplied new with modern versions, which I can only assume match directly with GTA and GTB types with 4.5 to 5w output. Nearly everyone agrees that the best tubes were the oldest, the ones made in the 40's that would have the lower output of 2.5w. None stated that their gear or the tube failed. I have seen a number of reported failures of the old Russian versions with metal base Melz 1578 and 6N8S, which are highly coveted but not without controversy. Many complain about noise which seems mostly attributed to bad solder (sometimes able to be repaired) and some have complained about early failures. Most of these tubes are 70's and 80's but there are versions back to the 50's as well. All speak of great SQ, if all in working order. I have interest in them but am hesitant as well. I have plenty of US made tubes to fool around with for now.\nI have several of the older types but have not used any yet. I am enjoying several different varieties of GTA/GTB's but am looking forward to hearing the older ones that everyone raves about. I'd hate to think that they could be unsafe to use (for the gear) or that I would ruin the tubes themselves. Has anyone experienced any of these problems?\nbillpete\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n396 posts\n07-03-2025 at 03:34pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@immatthewj\nThanks for this. I have read all of this stuff repeatedly. You see some minor discrepancies here and there but the bulk of it is the same. W is the nomenclature given t","title":"6SN7 tubes and variants question.","url":"https://forum.audiogon.com/discussions/6sn7-tubes-and-variants-question"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n195010-1294\nEdit\nDead Uptone Audio LPS 1\nMy LPS1 stopped working. I was using it with the ISO Regen, into my Ayre QB9 Twenty DAC. Even though I was told that the ISO Regen won\u2019t do anything to improve the sound of my Ayre QB9 Twenty, I happen to prefer it with. So I plugged the ISO Regen into a dual rail TeraDak LPS. I do notice a slightly different sound characteristic via headphones. I appreciate having a power button on the TeraDak so that I can work on my files from my streamer without the DAC powered on. But should I be looking for a better LPS? The ISO Regen is so small that I can hold it between my thumb and my middle finger and rated at 6-8 volts DC. Anyway, I realize this isn\u2019t the most engaging thread but any thoughts or advice is appreciated as always.\ngoofyfoot\n07-04-2025  1:10am\n6 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nsbank\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,402 posts\n07-04-2025 at 02:33pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nReach out to Alex at Uptone about a repair?\ngoofyfoot\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,608 posts\n07-04-2025 at 05:50pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@sbank\nI did leave a voice mail and sent a message via their website.If they can do a repair, I'm wondering what the warranty would be. Currently I'm not using the unit at all.\nsbank\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,402 posts\n07-04-2025 at 06:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHe monitors this regularly\nUptone Forum on Audiophilestyle\ngoofyfoot\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,608 posts\n07-05-2025 at 01:19am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@sbank\nThanks, I've seen his activity on there before but totally forgot about it. I appreciate your help. So. my thought is that I might decide to eventually get a higher end LPS but will just run my DAC without the ISO Regen till then. My DAC doesn't sound bad without it, just different.\nsbank\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,402 posts\n07-05-2025 at 11:42am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@goofyfoot\npretty happy with my Uptone JS-2, which can power 2 devices. It's a good time to look for one used if you like to buy used gear, because their introduction of the JS-4 just shipping now, has led to a number of upgraders who might be looking to sell their JS-2s. There's a thread on that introduction that is getting updates regularly. Cheers,\nSpencer\ngoofyfoot\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,608 posts\n07-05-2025 at 05:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@sbank\nI got an email from Alex telling me about the JS4 and explaining why they're unable to repair the LPS1. I'll look around for a preowned LS2 to see what I can find.\nMore to discover\nReview: Townshend Audio Speaker Podiums\nAudio Note Kit 3 AMP\nHelp with Denafrips Iris 12th to Ares...\nRecent Evaluation of the Home Audio S...\nWalker Audio Silver jumper vs Nordost...\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAurender N100H\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Dead Uptone Audio LPS 1","url":"https://forum.audiogon.com/discussions/dead-uptone-audio-lps-1"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194670-110571\nEdit\nHavelock Wool acoustic panels vs fiberglass/Rockwool\nI have recently found a company offering sheep's wool rigid acoustic panels, (\nhttps://havelockwool.com\n) Havelock Wool Company,\u00a0\u00a0and am considering using them vs the the standard fiberglass/rockwool rigid panels for my DIY wall/ceiling absorbers for my new listening room.\nThe wool would seem to be safer at a casual glance and wool is supposed to be a superior sound absorber I believe.\u00a0 The cost is a little more, but it is not terribly more expensive.\nI would be interested in others opinions on this approach.\nMichael\nmckinneymike\n06-05-2025 12:09pm\n17 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nPost removed\nJun 05, 2025\nzlone\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,431 posts\n06-05-2025 at 12:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nInteresting, and no\n@ditusa\n, it is not rock wool. It looks like it could get a little spendy though.\ncorelli\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,203 posts\n06-05-2025 at 01:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI used Rockwool panels when I put my audio room together.\u00a0 Had I known about this wool based product I suspect I would have gone with it instead given its superior performance (if their data is accurate)\u00a0 Price does not seem that unreasonable--less than $200 for six 2inch 2x4 panels.\nNice find!\n(where are they getting all those sheep???????)\nmckinneymike\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n128 posts\n06-05-2025 at 02:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@ditusa\nNothing new a new name for Rockwool insulation.\nMike\nNo this stuff is made from sheep wool. Much safer on your lungs and it\u2019s aciloustic properties are better than any synthetic product I am aware of, though not night and day. The safety factor is my biggest reason for even considering it, but cost must be considered. Joe much is your health worth though.\nThe cost is not astronomically higher and it looks like Lowes and Home Depot may be offering it soon. Not sure if that scale of economy will lessen delivered costs though. Have to wait and see if that might sway anyone.\n872 posts\n06-05-2025 at 07:\nohlala\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,281 posts\n06-05-2025 at 03:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAnother option is recycled denim/cotton like echo verb or soundproof cow. Moo.\nIn theory broad band panels are generally more effective. You may want to experiment doubling them up or have them offset from the wall/ceiling to maximize midrange absorption.\njpwarren58\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n746 posts\n06-05-2025 at 08:19pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThey even have a van insulating kit for those of us still selling speakers out the back of a van.\njpwarren58\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n746 posts\n06-05-2025 at 08:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThey even have a van insulating kit for those of us still selling speakers out the back of a van.\nPost removed\nJun 05, 2025\nmckinneymike\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n128 posts\n06-06-2025 at 12:12am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@ditusa\nI am not attempting to reinvent the wheel, just add a little bit of room reflection control to a lively space as safely as possible.\u00a0 Dennis has his followers, as do many acoustic gurus.\nblackbag20\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n637 posts\n06-06-2025 at 10:39am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSeems like a no-brainer.\u00a0 Six panels for $200 ... Thanks for sharing!\njrareform\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n218 posts\n06-09-2025 at 06:33pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIs there a concern about the rockwool or other insulation being breathed in?\u00a0 Are you not double covering the panels?\u00a0 I used white batting and then guilford of Maine for my first reflections.\u00a0 I can't see any insulation particles making its way through two layers of thick fabric.\u00a0 What is the concern here?\u00a0 Should I be concerned as my room probably has hundreds of pounds of insulation in here lol.\u00a0 The way I understand it, is unless the panels are disturbed or aren't covered, there is no real risk?\u00a0 I do like the fact that this isn't some synthetic stuff though made in a factory\npindac\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,236 posts\n06-23-2025 at 01:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nChoosing the absorbent filler for Acoustic Panels is one consideration to be decided on. Whether it be a Sustainable Substance as a by-product from one Industry or a product produced from a by-product from another Industry is for the individual to choose.\nA choice might be made for simply wanting a Natural Material only within the home, or wanting to support an industry promoting by-product usage and being participant in reducing impact in other Industries.\nAs a rule of thumb, Fibrous Filler produced as a Glass Wool that weighs approx' 35Kg/m3 is documented for having valuable absorption properties for a broad frequency range, this same guideline may transfer to other Fibrous Fillers Materials as well.\nFabric Covering / Acoustic Fabric Covering are also going to need to be decided on as a Fabric Covering might be the ideal aesthetic, but not be as suitable as a Acoustic Fabric. For either Fabric, choices made will effect the efficiency of the Built Panel. I use a Fire Rated strengthened Paper as my Panel Covers and as a covering for a few other structures produced in the room.\nPlacement of the Panel, not just the siting in the Room, but also how the Panels is positioned to the Wall > Ceiling will optimise their use within the space of set up. Hard Back to the Wall > Ceiling is not the optimised, being set up\nOff the\nWall > Ceiling and being better able to Absorb reflected sound from a Hard Surface has merit as a design within a room, but this can mean support legs for a Panel to make this happen.\nI have my best results in my Room when Panels are not hard against the Wall, where the Bulk of the Panels are Floor To Ceiling in the Room Corners, with the Panels creating Triangular Cavity in a Room Corner.\nSome places between Speaker and Listener can only have the Panel hard against the Wall, between the Speakers directly in front of the listener and behind the Listening Position, I have opted for the Hard against the Wall position.\nOnce when on a Hard Floor, (no soft covering) a Soft Material Temporary Used when using the system tidied up the energies released into the room, a secondary glazing system certainly rattled a lit less on certain tracks. If a Temporary Panels was produced due to the room aesthetic not being made less attractive, such a Panel could be tried on the floor in between the Speaker and Listening Position.\nThe Between the Speakers, Behind the Listening Position and Side Wall Absorbent Panels have Diffusion Panels mounted on the Absorbent Panels.\nDiffusion Panels can be a feature in a room and be quite attractive, but can be costly.\nAlternatively, there is ratio info available to self built Diffusion Panels, which can be a design produced that is noticeably more robust/cheaply produced than many seen. ","title":"Havelock Wool acoustic panels vs fiberglass/Rockwool","url":"https://forum.audiogon.com/discussions/havelock-wool-acoustic-panels-vs-fiberglass-rockwool"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194978-3140\nEdit\nSpeaker crossover capacitor & inductors values: schematic & implementation?\nI've been repairing/restoring/rehabilitating a great 30-year old pair of speakers and I have some questions stemming from my novice inexperience.\n1) In the woofer part of the crossover, the schematic shows a \"100uF 100V bi-polar\" in parallel with the woofer.\u00a0 My existing crossover, spare crossover that I purchases, and in every photo that I've seen of the crossover, they use two 47uF caps instead of one 100uF cap.\u00a0 \u00a0Why?\nWhy not two 50uF caps (which certainly appear to be available)?\u00a0 I understand that two smaller value caps might perform better than one large value cap (correct me if that understanding is wrong), but why use 47uF caps?\nI will certainly re-build this cross over with some type of Metalized Polypropylene cap.\u00a0 But do I use two 47uF (maybe with an added higher-quality bypass cap) or two 50uF caps?\n2)\u00a0 In the midrange section of the crossover, it has two 10uF caps in parallel wire in series with the midrange drivers. See attached snippet from the schematic:\nAs with the woofer circuit, I will probably replace these with\u00a0Metalized Polypropylene caps.\u00a0 I assume I can use one 20uF poly cap rather than two 10uf poly caps without any significant difference in quality.\u00a0 Or will two 10uF actually be much better?\n3)\u00a0 In the tweeter circuit there are 3 inductors. The first in series with the tweeters is a very small 0.011uH ferrite core inductor with a Rdc of 0.1 ohm (the other 2 are 0.5mH and 1.3mH inductors wired in parallel with the tweeters). See:\nNone of the speaker parts sellers (Madisound, Parts-express, Parts-connexion) have any inductor that small.\u00a0 Is that possibly a typo?\u00a0 (I will have to see if I can measure the inductor)\u00a0 0.011uH =\u00a00.000011mH = 11nH.\u00a0 \u00a0Does a value that small make any sense to any of you?\u00a0 I would like to replace it with an air core (for obvious reasons) and I can find air core inductors in roughly that size (0.010 uH) on digikey.com.\u00a0 But the size does seem strange to me. Further, if it is correct, the Rdc of the inductor will almost certainly be different. Do I need to compensate for the different resistance in the circuit, and if so how or where would I do that?\u00a0 Thanks!\nlotusm50\n07-01-2025 12:16am\n9 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ngs5556\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,284 posts\n07-01-2025 at 07:06am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nElectrolytic caps have relatively high ESR and wide tolerances.\u00a0 A good designer will calculate the ESR and the expected over (or under) capacitance into the crossover design. Any changes to ESR and capacitance may degrade the speaker performance. That said:\n1) Perhaps two 47uF caps provide for the capacitance and ESR the designer is shooting for. After all, 47uF caps are more abundant in the market than 50uF caps and therefore more choices to zero in on a desired performance spec.\n2) Film caps have less ESR and tighter tolerances than electrolytic caps... replace with caution for reasons above.\n3) There are 11nh ferrite core SMD chips available (Murata) but why are you replacing it? The size does make sense because it provides a corner frequency in the low Ghz, thereby making it the first line of tweeter protection from HF energy. I don't know enough about crossover design to make a suggestion without knowing the self-resonant frequency of that inductor. The DCR should not be a factor since a well behaved amplifier will not pass DC to the speaker.\nlotusm50\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n34 posts\n07-01-2025 at 01:30pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks.\n2) The main thing that concerns me is the change in ESR.\u00a0 I've heard varying opinions on the extent of the issue.\u00a0 It has been suggested that when switching to low ESR film caps, to add some compensating resistance in series at the driver.\u00a0 But as you suggest knowing what the difference in ESR is, is important.\u00a0 Measuring a 30 year old cap, may not provide the ESR value factored in to the design when the cap was new.\n3) I am contemplating replacing the old 11nH inductors following the concept that ferrite core inductors are problematic, particularly in series with tweeters. This is what the 11nH inductor looks like:\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n07-01-2025 at 01:46pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt has been suggested that when switching to low ESR film caps, to add some compensating resistance in series at the driver\nWell, the importance of this really depends.\u00a0 If this is in series with the driver, and the difference is < 0.3 Ohms it\u2019s probably OK, but you might still hear a difference exactly because you\u2019ve changed the level of that driver relative to everything else.\u00a0 \u00a0Modders do this and go \"OMG!! I\u2019m a genius this sounds so much better...\"\u00a0 Well, it\u2019s different because you\u2019ve now altered the crossover.\u00a0 It\u2019s not necessarily that your $150 cap is so much better.\nWhen ESR or DCR (for coils) really matters is when they are parallel (go to ground) to the driver.\u00a0 In some cases you may even see small value resistors in series.\u00a0 Those very small values should be a clue that the total R is a critical value.\u00a0 \u00a0Very small total R values in this leg can really throw off the entire speaker\u2019s impedance curve.\u00a0 \u00a0When I pick coils and caps to use in a speaker I take these DCR and ESR values into account.\u00a0 They aren't an accident.\u00a0 I did not randomly pick a small gauge coil because I could not afford bigger, so assume the original designers did the same.\nThese situations are where doing a complete electrical analysis\u00a0 and using a crossover simulation like XSim or VituixCAD can really help you evaluate what you are doing.\nThis is a discussion best held in DIYaudio where a lot of builders and experts hang out.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n07-01-2025 at 02:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nLet me add a little more... if I have a choice between a smaller coil with more DCR or a big coil and separate R I'll pick the smaller coil because coils handle high power better.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n07-01-2025 at 02:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBTW, if you are doing this, get something like the\nDayton Audio DATS\n.\u00a0 It's immensely useful for speaker diagnosis, part measurement and creating accurate schematics.\nlotusm50\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n34 posts\n07-01-2025 at 05:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks, Erik.\nWill repost this in DIYaudio and get a\u00a0Dayton Audio DATS.\u00a0 \u00a0I appreciate the help.\ngs5556\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,284 posts\n07-01-2025 at 07:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf you do replace that inductor with an air coil Jantzen, it will be the equivalent of a longer length of wire from the terminal to the first node of the tweeter crossover. That may or may not have an effect on HF roll off. When I spoke with a tech at Thiel Audio years ago about replacing a tweeter and mentioned snipping the wires, he said to de-solder so as not to change the length of","title":"Speaker crossover capacitor &amp;amp; inductors values: schematic &amp;amp; implementation?","url":"https://forum.audiogon.com/discussions/speaker-crossover-capacitor-inductors-values-schematic-implementat"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194923-85419\nEdit\nOutlet is \"Open Ground\" - Is There Still a Safe Way to Connect to My Audio Gear?\nSo typically from a wall power outlet runs a very short Nordost Power Cable to Nordost's Qb8 \"power strip,\" and then a loom of Nordost Power Cables to my vinyl audio set up\u00a0 All the Nordost cables were bought used and sound great.\u00a0 Having just moved and set up everything in a new room, the nearest power outlet is \"Open Ground\"(!)\u00a0 Without moving everything around to fit the main Power Cable length to a \"Grounded\" outlet, please is there a safe and best sounding way to still use this outlet to power everything?\u00a0 Thanks! :-)\nvinylfun\n06-26-2025 12:16am\n23 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nbigtwin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,626 posts\n06-26-2025 at 01:39am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThis may be a silly question, but have you looked inside the outlet box to determine if there is a two wire + ground cable entering the box.\u00a0 Unless your house is very old, it would be surprising not to have a ground wire.\u00a0 Maybe it's there and not connected properly?\u00a0 I can't think of another reason to be having an open ground.\u00a0 Cheers.\ngs5556\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,284 posts\n06-26-2025 at 03:28am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI assume that the receptacle is standard 3-prong and \"Open Ground\" was read from a plug in outlet tester.\nWhat you can do is remove the outlet and check the ground connections. Sometimes the grounding wire is wrapped around a screw on the box and not to the receptacle and the installer assumed the ears of the outlets would make a good enough ground contact with the box. Although not likely, this can defeat the ground over the years. What is more likely is if there is an insulator between the ears and the receptacle. Then simply remove the insulation. If that grounding conductor is long enough then you can attach it to the green screw of the outlet -- the right way of doing it. If there is not enough wire then an electrician should be called for giving you options if you really need to use that outlet.\njea48\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,944 posts\n06-26-2025 at 03:40pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@vinylfun\nIt is possible what\n@gs5556\nposted above, is possible.\nDid you check the other wall outlets in the same room for Open Ground?\nIf you have a multi-meter it would be easy to check without removing the outlet from the wall box. You would only need to remove the wall duplex cover plate. Set the meter to AC auto volts. Touch, contact, one test lead probe to the top or bottom of the steel metal outlet box. Insert the other test lead probe in the smaller of the two slots of one of the outlets and check for voltage If no voltage make 100% both probes age making good electrical contact. If still no voltage insert the test lead in the other, longer slot of the two and check for voltage.\nIf there is a safety equipment ground present you will measure 120V nominal.\nApproximate age of the house?\nIf really old there is a chance the wiring is original and could be old cloth covered rubber insulation. Do not try to remove the outlet. Just pulling the outlet out of the wall box for a look inside could cause the brittle insulation to fall off the wires baring the two conductors.\nThere is a chance the in wall branch circuit wiring is only two wire. Therein no safety equipment grounding conductor present.\nIf that is the case, at some point in time the old worn out original 2 wire duplex receptacle was changed out and was replaced with a 3 wire\u00a0 grounding type outlet.\nUse your plug-in circuit tester in the bedroom outlets. What does the tester show? Open Ground?\nGround\"(!)\u00a0 Without moving everything around to fit the main Power Cable length to a \"Grounded\" outlet, please is there a safe and best sounding way to still use this outlet to power everything?\nIF there is not any grounded objects within arms length of the equipment and the floor is wood or carpeted there is not a provided path for you to receive an electrical shock through your body. What would you have done if the wall outlet was only a two wire outlet? Used a ground cheater?\nYou might want to consider in the near future to hire an electrician and have a new dedicated 20A branch circuit installed for your audio system equipment.\nAlso have the electrician check out the Open Ground wall outlet. If it is only a 2 wire circuit, and if the box is deep enough, he can install a GFCI duplex outlet, in place of the 3 wire grounding type outlet. If the box is not deep enough he can buy a new 2 wire duplex receptacle and install it in place of the 3 wire outlet. Or just remove the outlet and install a blank wall plate.\ndekay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,249 posts\n06-26-2025 at 04:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWere the faceplate screw in place when you took the reading?\nIf not install the screw and check it again.\nDeKay\nvinylfun\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n47 posts\n06-26-2025 at 04:41pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGreat questions and thoughts - thank you very much.\nThe house is 63 years old.\u00a0 Yes, the \"Open Ground\" duplex outlet was identified with a three prong plug-in outlet tester, before I opened it up.\u00a0 Inside there are only two sets of two wires for the two outlets; the wires are cloth and rubber covered.\u00a0 There is no ground wire\u00a0 \u00a0The outlets are three prong so presumably were added after the original wiring.\nOther room outlets test as \"Grounded,\" hence my idea to first use one of these outlets and move my audio equipment, furniture, carpets, under lay et al around(!)\nLonger term I'm considering having an electrician install a dedicated 20A branch circuit and/or a GFCI duplex outlet...thank you all again for all your kind help.\u00a0 It is much appreciated.\u00a0 Enjoy your music!\njea48\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,944 posts\n06-26-2025 at 05:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe house is 63 years old.\u00a0 Yes, the \"Open Ground\" duplex outlet was identified with a three prong plug-in outlet tester, before I opened it up.\u00a0 Inside there are only two sets of two wires for the two outlets; the wires are cloth and rubber covered.\u00a0 There is no ground wire\n@vinylfun\n63 years old, 1962... I imagine the branch circuit wiring is cloth covered NM, Romex. Though going from memory, the two conductor where insulated with TW thermal plastic, PVC insulation.\nIt is possible, because of local Fire Codes, Electrical Codes, AHJ (Authority Having Jurisdiction) in your city required houses back then to be wired using BX, steel armored cable. (In 1962 the steel armor was not used as an equipment grounding conductor,) In 1962 it may have still had cloth covered rubber insulation covering the bare conductors.\nYes, the \"Open Ground\" duplex outlet was identified with a three prong plug-in outlet tester, before I opened it up.\nInside there are only two sets of two wires for the two outlets\nThat indicates a convenience outlet branch circuit. More than likely a 15A circuit. The outlet terminals were used for feed through in and out circuit through the box. Good chance th","title":"Outlet is &quot;Open Ground&quot; - Is There Still a Safe Way to Connect to My Audio Gear?","url":"https://forum.audiogon.com/discussions/outlet-is-open-ground-is-there-still-a-safe-way-to-connect-to-my-au"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194940-20253\nEdit\nDon't try to fix these electrical prolbems with a conditioner!\nOver the years of hanging out here I\u2019ve seen a lot of audiophiles with significant electrical problems try to fix them with a power conditioner.\u00a0 Lordy.\u00a0 \u00a0Look I\u2019m a big fan of power conditioners and as you all know recommend Furman often... but they can\u2019t fix what they can\u2019t fix, and may mask serious problems.\nIgnoring an electrical problem in your home is to ignore a property and life safety issue.\nLights flickering?\u00a0 Feel a tingle when you touch your equipment (or washer or range)?\nWe are used to seeing famous authors recommend weird/bespoke AC panel solutions, or isolated circuits, which of course are not free.\u00a0 My two recommendations here will set you back $20 or less.\nA tool every audiophile, no, every homeowner should have is an AC outlet tester.\u00a0 You can get them at any hardware store but I like the cheap-o\nKawaits style from Amazon\nbecause they include AC voltage AND, critically, Neutral to Earth voltages.\u00a0 \u00a0 All you have to do is plug it in and watch the AC.\u00a0 Is your AC stable while playing music?\u00a0 Does the N-E ever rise above 2 Volts?\u00a0 Do the red lights on the top light up as they should?\u00a0 Then you are good.\u00a0 (PS, a nice voltage meter is better and more reliable, but this is an excellent and safe alternative for those who don\u2019t have a soldering gun in their desk at all times. ) .\u00a0 Don\u2019t stop at your audio rack, check your other outlets too, especially if you\u2019ve moved into an old home.\nThe other recommendation is to at least inspect your outlet.\u00a0 If it\u2019s just old anyway replace it with an outlet that is rated for commercial AND residential.\u00a0 About $5-$7.\u00a0 Make sure your outlets are using screw down terminals and not back-stabbed (i.e. push in) terminals.\nI wrote more about this here.\nAgain, I know there are many here who are going to recommend bespoke extremely expensive jewel like outlets.\u00a0 My feelings about all that are in the blog. My point in this post is to suggest super cheap tests and improvements any audiophile can afford.\nBe safe.\u00a0 If you see signs of electrical problems don\u2019t patch over them with a conditioner.\nerik_squires\n06-27-2025  3:22pm\n25 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\natmasphere\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n12,453 posts\n06-27-2025 at 03:50pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@erik_squires\nTotally FWIW Dept.:\nMost of the people I encounter who are interesting in a power conditioner have already done their homework getting the AC up to code with new materials and often a 20A dedicated line. They want to see how far they can push it. I've never heard of anyone thinking a conditioner might be used as a band-aid.\nMost of the so-called 'conditioners' offered to high end audio are not; most seem to be glorified AC power strips, perhaps with some high frequency filtering on even a passive isolation transformer and so unable to clean up AC power of lower harmonics (of which the 5th is the most pesky) or regulate the output and so on.\nA real power conditioner has active circuitry. It will generate its own low distortion line frequency signal, usually synchronized with the AC line. It will then correct the AC line to minimize distortion and probably also regulate the AC line Voltage. Feedback is used to compare against the low distortion reference, so the output can be guaranteed low distortion right up to full current.\nIf the distortion of the output is not listed in the specs, its a power strip rather than a conditioner. IOW a proper conditioner will reduce AC line distortion.\nThe real conditioners I've seen are mostly older units. Apparently the commercial AC power conditioner market had the bottom drop out of it a long time ago- back in the 1980s.\nPost removed\nJun 27, 2025\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n06-27-2025 at 04:54pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOP... \"Lights flickering?\u00a0 Feel a tingle when you touch your equipment (or washer or range)? \"\nThat is a thing? Ignoring something like that? If it is my opinion of audiophiles goes down a few notches.\nGood idea to check outlets. They get flabby over time.\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n06-27-2025 at 04:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy experience is that direct lines and good quality power conditioners both make significant contributions to better sound quality. Both on the same order of magnitude. I have experience with three different homes and a half dozen good quality power conditioners (like Shunyata for instance). What you hear is always dependent on how good and resolving your audio system is.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n06-27-2025 at 06:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@atmasphere\n- I specifically wrote this for those on the opposite end of the financial situation.\u00a0 While yeah, it seems like many well-to-do audiophiles are able to and have spent money with an electrician to create custom AC solutions there are also those I read about here who try to avoid spending that money and try to fix actual AC\u00a0 problems with a conditioner, or some other patch, like a new outlet, when the problems they describe are more serious.\n@ghdprentice\n- Yes, yes it is.\u00a0 I\u2019ve seen more than one thread her on A\u2019gon start like that.\u00a0 \"My lights flicker a few times a day, especially if I run up the stairs... what kind of power conditioner should I get...\"\u00a0 \u00a0In one such thread we convinced the OP to get an electrician who found their house neutral was bad.\nNot too long ago there was a poster who had current running through his interconnects.... I think that was a reversed L-N issue or something.\nPoint is, peace of mind is cheap.\u00a0 \u00a0Better to test and know than to let things linger.\nUnfortunately it\u2019s exactly because we so often discuss the dedicated line, if not dedicated meter/panel/line that we exclude the less well-off audiophile who takes matters into his own hands via a power conditioner or strip.\u00a0 \u00a0Having a safe and reliable outlet is something everyone should have, even if they can't afford the higher levels of AC customization.\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n06-27-2025 at 06:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@erik_squires\nWow. Although I do remember one flickering lights story recently\u2026 but that is the only one.\nwhart\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,406 posts\n06-27-2025 at 06:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'm a big advocate for doing a power audit of a single family residence starting at the meter (which the power company will pull so you can see if there is any corrosion at the contact points) and having the feed traced to the main service panel which can be inspected and checked for hot spots and arcing; how secondary service panels are wired; the condition of the receptacles as well as their polarity (which the cheap hand-helds can do) before spending money on black boxes. I prefer to use electricians who are qualified for commercial work -- I find they often have more experience with the sorts of demands that audiophiles impose (which may seem ","title":"Don&#39;t try to fix these electrical prolbems with a conditioner!","url":"https://forum.audiogon.com/discussions/don-t-try-to-fix-these-electrical-prolbems-with-a-conditioner"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n1359429232\nEdit\nWhat is nearfield listening?\nI had someone \"in the industry\" who some of you have bought products from tell me that nearfield listening doesn't have to do with actual distance from the speakers, that it refers to whether you are sitting inside or outside a 60 degree angle from the speakers.\nSecondly, what are the drawbacks to sitting close to your speakers? I figure that there are advantages like being able to pull your speakers far out from back and side walls and also that the listening seat can also be far from the back wall.\nb_limo\n01-29-2013  3:13am\n24 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nbdgregory\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,746 posts\n01-29-2013 at 12:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt's when you position your speakers very, very close to you. Sort of like headphones but not, because they are in front of you. I think of it as w/i 4 ft from your seating position - but I'm not an authority.\nhttps://www.google.com/search?q=What+is+nearfield+listening&hl=en\nPost removed\nAug 12, 2015\nonhwy61\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,459 posts\n01-29-2013 at 02:19pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHas nothing to do with the angle formed by the speaker. Near field is simply listening close enough such that the direct sound from the speaker is more than the room reflected sound.\nlarryi\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,674 posts\n01-29-2013 at 02:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOnhwy61 is correct that nearfield mean where direct sound is louder than all of the reflected sound at the listening position. This distance would vary considerably, depending on the speaker, the size of the room, the reflective quality of the room, etc.\nThe primary drawback is that recordings are mixed, to some degree, to sound their best with \"normal\" speaker/room/listener arrangements. This means that there is eliance on the room providing more reflected sound in the mix than that provided by nearfield listening. I would expect that, as time goes by, more mixing would be for nearfield listening, given how much more common listening to computer monitors is becoming these days. Unless a speaker is designed for nearfield listening, there are other problems to contend with--e.g., large speakers with spaced out drivers may not have the sound of the drivers properly integrated at close distances; because high frequencies drop off more than low frequencies as distance increases, speakers are balanced for a particular distance that is probably farther away than nearfield.\nThe best thing about trying nearfield listening is that it is free. Just move your speakers or yourself and try it out. In a typical room, you probably don't have to get closer than say 4-5 feet to get the full effect, and one can back away some to find the best balance of the attributes of nearfield and farfield listening.\nmapman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23,710 posts\n01-29-2013 at 02:41pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNearfield is listening close to the speakers so that most of the sound reaches your ears directly from the speakers. Its an attempt to take room acoustics and reflected sound out of the equation, much like listening to headphones. SOme speakers are designed for nearfield listening ie to sound \"best\" listening nearfield. The focus may be more on flat on-axis frequency response along with detail and perhaps also dynamics to some degree. SOund artifacts that require room acoustics and reflected sound to be heard, like imaging, soundstage, and \"air\" are not a consideration.\nrrog\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,958 posts\n01-29-2013 at 04:49pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI agree with Mapman. Also, nearfield monitors must have drivers close together for proper integration. Floor standing speakers with drivers mounted across the front baffle are not designed for nearfield listening although many people use this type of speaker this way due to small listening rooms. This is a good reason to select the speaker that fits your room.\nbuconero117\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,311 posts\n01-29-2013 at 06:25pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMost none orchestra recordings are mixed using near field speakers very close to the mixing board. Headphone mixing is even worse, yet seems to be done to often. So, there is nothing \"normal\" about the speaker/room/listener arrangement present. That is one reason that so much of what we are presented with to hear in recordings is pretty bad. It is the reason things like imaging, soundstage, and \"air\" are often missing.\nmapman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23,710 posts\n01-29-2013 at 06:57pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYEs, good point. NEarfield listening requires tighter co-location of drivers for proper integration/coherency across the audible sound spectrum as Rrog indicated, although that often helps with imaging, soundstage and detail in non/less nearfield listening configurations as well. Proximity of drivers becomes less important geometrically when listening from a more distant location/perspective.\nonhwy61\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,459 posts\n01-29-2013 at 07:48pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSOund artifacts that require room acoustics and reflected sound to be heard, like imaging, soundstage, and \"air\" are not a consideration.\nI disagree. Imaging, soundstage and air do not require reflected sound. The can be enhanced by reflected sound, but it is not required.\nwarrenh\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,299 posts\n01-29-2013 at 08:27pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBill Evans, Scott LaFaro and Paul Motian = nearfield listening at its' best. Of course a little SET action in there will make it as toasty as their three recordings were meant to be. I always move my listening chair a couple of feet closer when these guys are on my rig.\ntgrisham\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,291 posts\n01-29-2013 at 08:49pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have tried many configurations in different rooms, and even though my room is 25 feet long and 17 feet wide, I prefer to sit with the speakers along the 17 foot wall, and I sit 9 feet from each speaker. This leaves a lot of space behind me, so there are minimal reflections off the back wall. Is this \"nearfield\"? It is to me because it takes much of the primary reflections out of the equation. It is easier to set up the speakers and requires little wall treatments at the first reflection. I am curious about the statement that recordings are mixed to \"sound their best in a normal room\", (implying a large room with reflections?). All of the studio mixing consoles I have seen are in the nearfield. They may be mixed to sound like a large room but the monitors are close to the sound engineer/mixer. How can this be?\nmapman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23,710 posts\n01-30-2013 at 02:04am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOnh,\nTrue the spatial cues are in the recording, but i'm pretty sure re","title":"What is nearfield listening?","url":"https://forum.audiogon.com/discussions/what-is-nearfield-listening"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n185868-184154\nEdit\nAudioAero Capitole Mk2\nMy audio engineer has tried replacing the Phillips transport with a new one in my\u00a0AudioAero Capitole Mk2 but the same fault \"no CD\" still reads on the display. I have been in touch with Vermeer Audio, the UK ex-agent and directly with various Audiogon members non of whom have been able to help. I'm seeking to find the service manual / schematics / test points for the unit so my engineer here in New Zealand can test the values. The chip installed is version 5.3. Can anyone help please?\nsantani\n08-09-2023 12:24am\n3 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nmem916\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n20 posts\n06-19-2025 at 03:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI replaced my transport a few weeks ago and it cured the \"no CD\" problem. However I have a new problem.\u00a0 Both channels have no output even though the drive is working properly and I get a good lock on toslink and coax digital inputs.\u00a0 A couple of times I was able to get it to work by cycling through the channels but now even that doesn't work.\u00a0 \u00a0Did you find the service manual and schematics?\u00a0 If anyone has some suggestions I would sure appreciate it.\u00a0 I've owned this player for over 20 years with no major issues until now.\u00a0 Had the drive replaced in 2011 by a shop in Arizona that is now shut down but that's it until this year.\nchayro\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,097 posts\n06-19-2025 at 05:34pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSignature Sound in NY was an AA dealer and the owner did the repairs I believe. You might try contacting them.\njafant\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n21,760 posts\n06-23-2025 at 04:16am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nmem916\nKeep me posted as you find an Audio tech to repair/service your AA player.\nHappy Listening!\nMore to discover\nAudioMeca vs. AudioAero vs. Electroco...\nAudioaero Prima CD Player vs Lexicon ...\nAudioAero Capitale II vs Muscial Fide...\nAudioAero Capitole Mk2\nAurender N100H\nAyon Audio S-10IIxs\nAntipodes Audio K40\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"AudioAero Capitole Mk2","url":"https://forum.audiogon.com/discussions/audioaero-capitole-mk2"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192978-201206\nEdit\nmore power\nI currently have an onkyo tx-sa607 re\nceiver with cerwin vega vs-100 for the front high speakers vs-150 fronts and vs120's for my rear and surrounds, It rocks and clean with lots of bass, but I want more. The speakers are not getting their full potential. I was using onkyo a tx-sv909 pro receiver which I believe is a better quality along with two onkyo m-282 amps but limited to 5ch. Can I intergrate these with my current receiver for more power or does anyone have suggestions on what to use.\nfubar555\n01-30-2025 10:45pm\n2 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ndlevi67\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n56 posts\n01-31-2025 at 10:30am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe 607 has pre-outs for all audio channels, so you should be able to add external amplification to both front and rear channels if you want, effectively using the receiver as pre-amp only (or as power amp for surround channels only).\nIf you still have the M282s, then start from connecting those in the chain, and see how you get along. The VS150 and VS120 can easily take more than the 100 wpc that the M282s are capable of. If you no longer have the M282s, I would consider trying the Fosi V3 - they are inexpensive, very well reviewed and incredibly powerful for their size.\nceltic66\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,974 posts\n06-23-2025 at 03:27am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCrewing Vega speakers are absolute power pigs. \u00a0They consume amplifiers and get louder but rarely distort. \u00a0The Onkyo not up to the task. \u00a0Without getting too crazy, would look at Outlaw as their power regulation is more solid than Onkyo. \u00a0Not sure how many channels they do today.\nDon\u2019t get me wrong, Onkyo in past has done well with 2-channel, just not theater surround stuff.\nMore to discover\nFlexible Power Cords\nCLASS A POWER RATINGS\nKrell KSA-200S Power Cable\nMating power cords with APL 3910\nReview: VH Audio Flavor 4 Power cord\nRSX MUSIC SERVER RSX MUSIC SERVER\nAyon Audio S-10IIxs\nAurender N10\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"more power","url":"https://forum.audiogon.com/discussions/more-power-3"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194086-182356\nEdit\nTroubleshooting help\nNew to audio stuff.\u00a0 I have inherited some Adcom equipment. I have a cd player, preamp and power amp.\u00a0 There is a slight distortion in the right channel.\u00a0 What is the best procedure to determine the faulty component?\u00a0 Help please.\nsavant19970\n04-15-2025  2:42pm\n6 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ngrinnell\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,193 posts\n04-15-2025 at 03:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSwap input cables right and left to see where its coming from.\u00a0 one device at a time\nhilde45\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,101 posts\n04-15-2025 at 03:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGood advice. I have an Adcom amp. For me, the problem was an old fuse. Easy to fix.\nbojack\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n703 posts\n04-16-2025 at 09:22am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nJust be sure the components are turned off before you change inputs, etc.\nzlone\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,431 posts\n04-16-2025 at 12:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDoes the static vary with the position of the volume control? Some older gear uses resistive volume controls that can get corroded. If there are any buttons like tone defeat, try those too, if the sound varies when you press them, then there is corrosion. DeOxit is a good solution for fixing those problems. I had an old Nakamichi receiver that had all of these problems and I was able to resolve the problems with DeOxit.\nlordmelton\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,190 posts\n04-19-2025 at 11:13am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou should confirm you are't getting DC volts on your speaker outputs.\nPlenty of YT vids.\nIf there isn't any DC blow out the cobwebs for a few days, see if that helps\nceltic66\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,974 posts\n06-23-2025 at 03:13am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nhttps://www.amazon.com/CAIG-D5S-6-Contact-Cleaner-Rejuvenator/dp/B00I3G272M/ref=sr_1_5?crid=56EEG4X5ZO6S&dib=eyJ2IjoiMSJ9.Cr0w1rfCs0cpsQ90vTZPJr_f-gifbfhG31iackwzXzjBbeSLctR-ZdGm-jnPfDH2sM_YM2OuXraUTXCw1eOJw17DWaBH-f2vtjWwfixwjE13RtMB0dfCNAws2-zZhlItMKvFLYOct5ntXjjtMn8j-NsfSmWoiONHVM2lrBDxQL5UD0Bf5TY7Luf_AtpYuluiZQugPdKtYH4r0kGHrFWQbFyaYeoQcA1GT6nHuXmWRyoqbybNSl-hS60ZuR3i8j3B3C6dmBrbvDYl28qLLXXYve2HdY3GFe9LsZo9ZPNu-MA.sG6JFNqLCZeio1igA9rjVlLIVAuf9RN4_NmW7EJ3KIA&dib_tag=se&keywords=caig+deoxit+d5&qid=1750648207&sprefix=Caig%2Caps%2C164&sr=8-5\nThe wonder of Caig Deoxit 5! \u00a0Probably need apply, wait 1 hour, repeat. \u00a0May take several times while also working the potentiometer. \u00a0Good luck with resurrection.\nMore to discover\nLooking for help troubleshooting Chan...\nWadia itransport troubleshooting\nNeed HELP-Troubleshooting weird balan...\nNAD 208 troubleshooting\nTubed Amp Troubleshooting\nVandersteen Model 2c ii signature\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nAurender N10\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Troubleshooting help","url":"https://forum.audiogon.com/discussions/troubleshooting-help-3"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194836-9095\nEdit\nMetal or Carbon Resistors - Which is better?\nA passive preamp paired with 300B amplifier and TT as main source.\nPassive preamp comes with two options,\na) Metal film resistor - 1% accuracy 0.5W type\nb) Carbon composition resistor -\u00a05% accuracy 0.5W type\nWhich one would you choose and why?\nlalitk\n06-18-2025  3:11am\n28 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nlarryi\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,674 posts\n06-18-2025 at 04:35am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI suppose it would also matter which specific brands were offered too. \u00a0A local builder of very high end custom electronics likes certain vintage carbon composition resistors for the rich and warm sound he favors. \u00a0Most of his builds use the likes of vintage Allen Bradleys, for higher builds it might mean vintage IRC resistors, and so very special builds employ Western Electric parts.\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,218 posts\n06-18-2025 at 02:49pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'd choose metal film in places like power supplies, more likely to choose carbon in signal path. For most mods I've been using Takman carbon film and/or Texas Components TX 2575 naked bulk metal foils, Takman combo of warmer voicing and precision, TX highest resolving/transparent resistor out there, very neutral, some may hear it as analytical. All these resistors have their place, have to weigh out the recipe.\nkofibaffour\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n726 posts\n06-18-2025 at 03:29pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe one with the better implementation. Implementation matters of material rype\nlalitk\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,196 posts\n06-18-2025 at 04:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@larryi\n@sns\nYou\u2019re both spot on and get my dilemma. No matter what I choose, it\u2019s going to be a bit of tradeoff, resolution\u00a0and precision vs. romance and presence.\nSometimes the right choice isn\u2019t about specs, it\u2019s about what makes the music feel right.\nPost removed\nJun 18, 2025\nknotscott\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,430 posts\n06-18-2025 at 05:48pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAlways tradeoffs, but per the recommendation of an audio buddy I went with the Takman REY metal film in my Hagerman Bugle 3 phono stage.\u00a0 No regrets, and will likely use them again when I build the Hagerman Cornet 3. .\nalexberger\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n958 posts\n06-19-2025 at 12:58am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI wanted to share my resistor preferences for different applications.\nI prefer using tantalum resistors in signal paths and cathodes.\nFor power supplies, I opt for metal film resistors.\nLastly, for loads, stoppers, and speaker crossovers, I find carbon resistors to be most suitable.\nmitch2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,780 posts\n06-19-2025 at 02:21am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNot sure about \"better\" but I chose Amtrans AMRG non-magnetic carbon film resistors in my Hattor passive that I use to adjust volume and provide a display and remote control in my system.\u00a0 I have been happy with the sound, and compared to the many other preamps I have owned I don't believe it leaves anything on the table wrt volume control without gain.\nsalectric\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n785 posts\n06-19-2025 at 10:31am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhat resistor sounds best very much depends on application. \u00a0After several decades of comparing resistors, I have strong opinions on the subject. \u00a0A short summary:\nFor loads (input, interstage and output), Audio Note 2w silver tantalums. \u00a0The 2w silver sounds better than 1w or 1/2w.\nFor gridstoppers, Riken carbon film (discontinued).\nFor phono RIAA eq, Vishay bulk foil.\nFor plate loads and power supplies, Mills wirewound.\nI don\u2019t like some of the other resistor types mentioned above such as AMRG and Takman, and I haven\u2019t had any luck with vintage Allen Bradley\u2019s. \u00a0However, there is one other type that is a solid second or third choice to my favorites listed above, namely, Dale/Vishay CMF metal foils. \u00a0The Dales are cheap and readily available in lots of values. \u00a0They have a warm, musical sound with good detail and dynamics. \u00a0Take a look inside a Lamm preamp or amp and you will see Dale CMFs throughout. \u00a0Same with older Cary amps and preamps.\ncuriousjim\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,165 posts\n06-19-2025 at 02:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@lalitk\nSupposedly the film resistors are better, but I doubt I\u2019d hear the difference in a passive preamp. If it\u2019s an option, I would try wire resistors, but then again, with the preamp being passive. \u00a0I\u2019m not picking on passive preamps, but they so many fewer parts, a few better resistors might only make a difference on paper.\nAll the best and let us know what you decide.\ncuriousjim\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,165 posts\n06-19-2025 at 02:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@lalitk\nSupposedly the film resistors are better, but I doubt I\u2019d hear the difference in a passive preamp. If it\u2019s an option, I would try wire resistors, but then again, with the preamp being passive. \u00a0I\u2019m not picking on passive preamps, but they so many fewer parts, a few better resistors might only make a difference on paper.\nAll the best and let us know what you decide.\nlarryi\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,674 posts\n06-19-2025 at 04:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFor some passive linestages, the resistors are almost the whole game\u2014they have a few switches/selector, and attenuation means a stepped attenuator or relay switching of different combination of resistors. \u00a0The right choice is important.\nsalectric\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n785 posts\n06-19-2025 at 04:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThere is a website that reviewed resistors for a passive attenuator and it concluded the Audio Note 2w silver tantalums were the best sounding by far; unfortunately they are so expensive it isn\u2019t practical to use them for all steps in a stepped attenuator.\ngrannyring\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,700 posts\n06-19-2025 at 05:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@lalitk\nplease let us know the specific use. It is to load a stepped attenuator? Khozmo attenuator? Shunt style stepped attenuator?\u00a0Omron\u00a0relay based Shunt type? Thanks.\nNude Vishay ZFoils are wonderfully resolving, quiet and still pleasing to the ears. They do less editorializing than the other resistors mentioned. You could place Audio Note 2W silver tants in the shunt position.\nPotentially even better is to avoid this question by using the Tortuga LDR based \u201cThe ePot.V4\u201dsystem. Perhaps the best sounding attenuator/control center on the market. \u00a0I am just not exactly sure what you are up to.\nsalectric\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n785 posts\n06-19-2025 at 06:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe review I mentioned is at:\nsw1xad.co.uk\nIf the link doesn\u2019t work, just google \u201caudio n","title":"Metal or Carbon Resistors - Which is better?","url":"https://forum.audiogon.com/discussions/metal-or-carbon-resistors-which-is-better"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194859-537\nEdit\nIs The Audio Asylum Down Today?\nUsing several browsers I keep getting the error page.\nThis site can\u2019t be reached\nwww.audioasylum.com\ntook too long to respond.\ndill\n06-20-2025 12:40pm\n3 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nyogiboy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,232 posts\n06-20-2025 at 12:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\ndill\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,636 posts\n06-20-2025 at 01:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks, must have been a glitch on their end this morning. I can access now.\ndekay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,249 posts\n06-20-2025 at 04:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI had that happen a day, or two ago.\nThis morning when I ran Audiogon.com on the \"Is It Down Right Now?\" website the reply was \"Who\u2019s asking?\".\nDeKay\nMore to discover\nAsylum Powercord. Has anyone tried th...\nAudiogon/Asylum and magazine reviewer...\nIs The Audio Asylum Down?\nThanks to Audiogon and Audio Asylum\nIs The Audio Asylum Down?\nFocal 36 MONTH FINANCING\nAurender N10\nAyon Audio S-10IIxs\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Is The Audio Asylum Down Today?","url":"https://forum.audiogon.com/discussions/is-the-audio-asylum-down-today"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194846-108378\nEdit\nMixing Crossover Caps..., What Would You Do???\nLet\u2019s say that you wanted a conjugate capacitor value of 72 mfd.\nNow lets say that you have at your disposal two 400 volt MKP \"47\" mfd, two\u00a0 polypropylene 220 volt, \"15\" mfd and two 220 polypropylene \"10\" mfd caps to work with.\nFor those who care, the MKP are Audyn Q4s and the polypropylene are Sprague.\u00a0 I can hear, and prefer, what the Sprague do to the sound of the Audyn even in the conjugate position.\nOK, now we measure the caps and find one Audyn is 46.0 mfd and the other is 47.0 mfd.\u00a0 The two Sprague \"15\" mfd caps measure 15.0 and 15.5 mfd and the two Sprague \"10\" mfd caps measure 10.0 and 10.5 mfd.\nSo..., by which of these two options we put this mess together...,\n46.0 + 15.5 +10.5 = 72 mfd AND 47.0 +15.0 +10.0 = 72.0 mfd and the \"final\" values are both perfect..., OR\n46.0 +15.5 + 10.0 = 71.5 mfd AND 47.0 +15.0 +10.5 = 72.5 mfd\nBUT in this case at least the polypropylene caps add up the same (i.e., 25.5 mfd).\nSo, splitting hairs, what becomes more important..., that the total values come out closer to the same, or that the various types come out closer to the same?\ntoddalin\n06-18-2025 10:45pm\n2 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n06-19-2025 at 01:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhat is the goal? Where is this cap used?\ntoddalin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n708 posts\n06-19-2025 at 05:30pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAs noted, this is the conjugate cap and is used with a 5.8 mH choke to produce a 245 Hz crossover frequency for the JBL 2241H 18\" woofer.\nMore to discover\nWhy does mixing quality'n'crap sound ...\nMixing Speaker Impedance?\nMixing balanced and single-ended outputs\nTube mixing\nMixing Tenor hybrid with SS multichan...\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nAuralic Aries G2.1\nVandersteen Model 2c ii signature\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Mixing Crossover Caps..., What Would You Do???","url":"https://forum.audiogon.com/discussions/mixing-crossover-caps-what-would-you-do"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194824-205000\nEdit\nWe want more of this!\nhttps://youtu.be/2IlW-HX_m_4\nWonderful initiative on capacitors!\nOther than listening live, theres only a few ways to find out how capacitors work. A great starting point, no objective statements, just samples for people to listen to.\nAlmost 60 other capacitors in the lineup as stated on the website\naudiorev9\n06-16-2025  2:32pm\n4 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nPost removed\nJun 16, 2025\ndweller\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,950 posts\n06-16-2025 at 11:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSpeaking of capacitors, what's the status of the M.I.T. \"Multi Cap\" that was suppose to be audio's salvation?\naudiorev9\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6 posts\n06-17-2025 at 10:11am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNot commercially viable, hard to stardardized. One can always get those for DIY project but most DIYers would not want to spend that much on one component\nmofimadness\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,591 posts\n06-18-2025 at 01:45am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHere's the capacitor shootout from awhile ago that I use quite often:\nhttps://www.humblehomemadehifi.com/Cap.html\nGreat info and a really good read...\nMore to discover\nNeed power amp suggestions for ProAc ...\nFlexible Power Cords\nCLASS A POWER RATINGS\nStriking a balance between musicality...\nMating power cords with APL 3910\nAurender N100H\nRSX MUSIC SERVER RSX MUSIC SERVER\nAuralic Aries G2.1\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"We want more of this!","url":"https://forum.audiogon.com/discussions/we-want-more-of-this"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194827-35370\nEdit\nICEpower 125ASX2 front end\nI'm building an amp using two\u00a0ICEpower 125ASX2s bridged.\nAnyone built a front end/buffer with good results?\nOutput Power 1 % THD+N, 20 Hz \u2013 20 kHz\n(SE)\n125 W (4 \u03a9)\n150W (8 \u03a9)\nOutput Power 1 % THD+N,\u00a020 Hz \u2013 20 kHz\n(BTL)\n450 W (4 \u03a9)\nOutput Power 10 % THD+N, 20 Hz \u2013 20 kHz (SE)\n150 W (4 \u03a9)\nOutput Power 10 % THD+N, 20 Hz \u2013 20 kHz (BTL)\n550 W (4 \u03a9)\nMinimum load impedance\nMaximum amplifier efficiency\nMaximum total amp+psu efficiency\n86 %\nSupply voltage input (Selectable)\n85-264 VAC\nPeak output current\n20 A\nDynamic range (SE)\n117 dB\nDynamic range (BTL)\n121 dB\nAmplifier maximum output voltage per channel\n32 V\nOutput referenced idle noise (A-weighted)\n(SE)\n30 \u00b5V\nAmplifier maximum output voltage per channel\n32\u00a0V\u00a0(SE)\n60\u00a0V\u00a0(BTL)\nOutput referenced idle noise (A-weighted)\n(BTL)\n36\u00a0\u00b5V\nTHD+N 1W/1kHz\n0.003 %\ndeancacioppo\n06-16-2025  5:49pm\n1 response\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n06-17-2025 at 01:12am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'm not sure... if you mean a preamp, then my experience with the ASP line was that they were a little on the warm side.\u00a0 Close to Parasound Halo, like the A23\nbut also good candidates for Parasound's P7, which worked REALLY well with mine.\nMore to discover\ni am getting a buzzing sound from my ...\nDecisions, decisions (upgrades to dig...\nCat SL-1 reference vs Sonic Frontiers...\nWhat so special about Sonic Frontiers ?\nSuggestions for an Analog Front-End\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nFocal 36 MONTH FINANCING\nVolumio Primo Plus\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"ICEpower 125ASX2 front end","url":"https://forum.audiogon.com/discussions/icepower-125asx2-front-end"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194230-90040\nEdit\nRoom Treatment: A Primer\nWhen a speaker emits sound waves, they travel to your listening position but also to the ceiling, sides walls and floor, where they are reflected toward the listening position. While these first reflections arrive later and are measurably distinct from the initial signal, they reach our ears too soon for our psychoacoustic system to distinguish them from the initial signal and they become one in our head. What can be lost or overwhelmed by this wave interference are the subtler sounds that can help depict hall size, performer placement, soundstage width and depth, and the music\u2019s overall tonal signature. This is more the \"psycho\" part of psychoacoustics and is distinct from the later reflections that bounce around the room and result in frequency peaks and nulls that accrue from room modes and the like. These later reflections might also interfere with the initial speaker signal much as first reflections do, but they further screw up the sound as they contribute to a less than smooth room frequency curve and/or cause \u201cringing\u201d. Treatment at first reflection points helps a lot, but whole room treatment is necessary to deal with these later reflections.\nAbsorption simply captures these interfering wave reflections and converts them to heat. Diffusion breaks the waves up and reflects them in different directions instead of directly back at you. To better understand diffusion\u2019s role, imagine being in a room and shooting a shotgun directly at a flat wall (no diffusion) versus against a rock wall (diffusion). The return path of the former is predictable and most are flying directly back at you. The latter will have much of the shot going elsewhere and taking a more circuitous route, bouncing off the surfaces of the room and even bumping into other shot before they might return to you. Because they are fewer, have been delayed, and have a lower energy, their return will not bother you as much as if they came flying straight back at you. Similarly, diffusion provides a time delay along with a weaker signal, allowing your psychoacoustic system to ignore or at least differentiate the reflections from the initial signal. Scattering panels work similarly and often are combined with absorption.\nAt a minimum, you want to avoid \"first reflections\" and instead have either \"first absorption\" or diffusion. Opinions are mixed as to which is better. It is probably easier to do absorption with standard home goods/furnishings such as rugs, blankets, curtains, overstuffed couches, etc. Some suggest that books and records have significant absorption properties, but I would argue they are primarily reflective and if there is absorption, it is over an extremely limited frequency range. \u00a0Bookshelves, racks, and the like do not give a predictable diffusion pattern. You may be getting different reflections from various media or equipment but they will not have the significant and ordered differences in depth to achieve meaningful diffusion. Neither will a popcorn ceiling nor textured wallpaper. On the other hand, if you wanted to arrange your equipment or books to follow a QRD pattern, you might see some benefit. Also, while too much absorption can be a bad thing as it sucks the reverberant life out of the room, I am not sure there is such a thing as too much diffusion.\nIf you cannot go full Monty because \u00a0of WAF, expense, room layout, etc., at the least put a rug down in front of you, avoid any hard surfaces such as a table between you and the speakers, and hang draperies on your windows and tapestries on your wall at the first reflection points.\ntcutter\n04-25-2025  1:06pm\n6 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nbaylinor\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,671 posts\n04-25-2025 at 02:14pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe exact best ratio of absorption vs diffusion is totally dependent on the room size AND construction. Under my house of stereo system, I show pics of what exactly works best for it. It's just not possible to make general recommendations even though the OP did an excellent job of explaining it. It took me well over 3 years of experimenting with various room treatments and placement to get it right. And that's starting with a room built purely for sound and of widely accepted ideal rectangle dimensions. It's a lot more complicated than upgrading components. That's why the majority do without.\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n04-25-2025 at 02:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI learn acoustics experimenting but also reading a lot about acoustics concepts. It takes me 2 years full time to understand... I am retired... If not i would had never try. I owned a dedicated room if not i would not had tried either...\nSave all we can read about balance between reflection/absorbtion /diffusion...\nThe most important discovery for me was how to use the basic physical device\u00a0 at the root of modern acoustics : Helmhotz resonators...\nit was my means to modify my room acoustics content and acoustics parameters by using different location for many of them and not only their mechanically variable cross ratio parameters...\nI did all that for fun using my hearing to tune them and place them at the right spot all around the speakers and my listening position...\nIf you dont read basic scientific articles about room acoustics and many deep acoustics phenomenon like the ratio between LAV/ASW you will not do the right thing...\nIf you dont want to take all this time the best solution exist now and even if you dont buy it you can read also the articles about sound by Dr. Edgar Choueiri you will learn many thing which are nowhere else easy to find......\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n04-25-2025 at 03:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBaylinor is right!\nas i said, i am in retirement and it takes me 2 year full time to figure out everything needed..\nBut trust me my system (low cost) was audiophile (spatial characteristics of sound were incredible all sound around my listening position, speakers dont exist anymore) ...\nIt could have been improved for sure with high end components\n, but after my optimization of my low cost system i was already in heaven, it was enough for my needs and budget...\nWith the same knowledge i can now optimize any system at any price anyway...\nI did it a second time with a smaller system ( way less spectacular because desktop speakers cannot replace full and big speakers)\nI\u00a0 had used my acoustics knowledge to optimize my headphone also and i own now one of the best headphone in the world (soundfield natural and out of my head)\nAcoustics rules....\nSomeone saying otherwise is ignorant...\nIt\u2019s a lot more complicated than upgrading components. That\u2019s why the majority do without.\nbaylinor\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,671 posts\n04-25-2025 at 03:14pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@mahgister\nI always like reading about your knowledge of resonators. Being a novice in the matter, I chose to invest in an AD-POWR Sorcer x4 harmonic resonator and I very much enjoy the extra liveliness it provides.\nmahgister\nDetails\nDiscussi","title":"Room Treatment: A Primer","url":"https://forum.audiogon.com/discussions/room-treatment-a-primer"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194513-189789\nEdit\nBluesound node confusion\nI was hoping to get some help determining the differences between the different versions of the node. First gen .,second gen., 2i in between, n 130,n132?\nhave a second system with some klipsch rp600m II an old outlaw pre/pro and would like to stream on the cheap. Using a slash 6 and my phone with iTunes and it\u2019s pretty rough sounding in the front end. I\u2019ve never had a dedicated streamer and thought this would be a good way to get my feet wet.\nAny advice will be greatly appreciated!\njohnnybwood\n05-21-2025 12:01pm\n38 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ngkelly\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,124 posts\n05-21-2025 at 01:13pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTo get one\u2019s feet wet, and to be streaming on a budget, this is a good way to start.\nhttps://www.amazon.com/dp/B09HC5GRKY?ref=emc_p_m_5_mob_i_atc\nrick_n\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n491 posts\n05-21-2025 at 01:36pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe Nodes have evolved over time as most audio products do.\u00a0 The biggest difference that you will likely hear will be from the DAC section.\u00a0 The DAC section in the newest release, the Icon, is quite good and much superior to earlier gen Nodes.\njohnnybwood\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n75 posts\n05-21-2025 at 04:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe icon is nice I\u2019m sure but I\u2019m looking for hapless streaming for five hundred dollars or less. If the dac performance is good enough for now I can always add a better dac later. I was trying to differentiate between the standard versions of the node because there might be a feature that might miss. And also the best performing internal dac in that range.\njohnnybwood\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n75 posts\n05-21-2025 at 04:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGapless streaming. Auto correct got me again!\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n05-21-2025 at 05:38pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI needed something to break in an amp. So I bought a 2021 Bluesound Node...\nhttps://www.amazon.com/Bluesound-Wireless-Multi-Room-Hi-Res-Streamer/dp/B0937GTQ78/ref=sr_1_3_pp?crid=2XC3IXURMNNIX&dib=eyJ2IjoiMSJ9._yGgKgwX75uiLaJXrgJoGhOUXo9OR7lZsIO_cmJDLThCr785RpqULIcYpKKaiIGLAQ1sDrjLfIOjXO7NkL-KFDlkUtBU6QsvjtLqGn5KSa2oNzuWu5T_WOlcterGrBFHzORD7Z3KvuPR5h5s0URKOmdH6ssMufXTRVGqUOgB60tR1rdT7F7CQB3fa3TvQPiParccLk7dsF9H5FlNiZQ5s1BCefspCrnmPbJQQ5rZh7A.oeY3zpA-FiJzf8Z60Zz9wojOrUfiS3aistn-4UzmVrk&dib_tag=se&keywords=bluesound%2Bnode&qid=1747848934&sprefix=bluesound%2Bnode%2Caps%2C204&sr=8-3&th=1\nI have it attached to a $10K amp and $34K speakers. It sounds surprisingly good. For $349 it is hard to go wrong. I would not think there are any features missing. It is controlled but the Bluesound app which works very well.\njohnnybwood\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n75 posts\n05-21-2025 at 06:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks for that\nllg98ljk\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n333 posts\n05-21-2025 at 07:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCheck out the \"Audio Factory\". Multi line distributor for Bluesound. Feature really nice pricing on official refurb and overstock items. Also carry NAD, Dali and PSB.\nNo affiliation, just a satisfied customer.\njohnnotkathi\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n146 posts\n05-21-2025 at 07:26pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWiiM Ultra\u2026\u2026\ud83d\ude0e\nnogaps\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n187 posts\n05-21-2025 at 09:48pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nJust went through all the Node models/differences thing.\u00a0 Google \"bluesound node models by year\" and/or \"bluesound node model differences\". I ended up picking up a Node with a custom power supply and internal power supply board of A-gon..sounds terrific.\nThe short version..get at least a Node 130 (2021 launch to more recent).\u00a0 You can find them used on us audio mart or here on A-gon for $250-$300.\u00a0 \u00a0I think(my memory isn't great..I've gone through a ton of info) the N130 features an optical out(not on previous models) for connecting to an external DAC and a little better internal DAC. The most recent/current model has a much improved DAC.\nGoogle the specifics I mention here to be sure, but this should get you on the right track.\njohnnybwood\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n75 posts\n05-21-2025 at 10:06pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks for all the info! I didn\u2019t know the 130 referred to the 2021 version. I was planning on getting no earlier than that so that helps me a whole bunch. Thanks for the source references too. I was watching a YouTube video about the node that the guy was explaining that gapless streaming is not a given for all devices and the blue Sound node was one of the best at achieving that.\nCheer's\ndrmuso\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n262 posts\n05-22-2025 at 12:05am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI've used a Bluesound Node 130 for several years with a system that some here would say deserves a much more expensive streamer.\u00a0 I did add an external power supply and use an external DAC, and it sounds very good.\u00a0 The BluOS app is one of the better ones, and that is an important consideration in choosing a streamer.\nYou might find the internal DAC on the 130 or later Nodes quite acceptable.\u00a0 I thought it was comparable to a Denafrips Ares II DAC, which many have raved about.\n2psyop\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,944 posts\n05-22-2025 at 12:28am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have had several versions of the Bluesound Node over the years. Original Node, Vault, Node 2, Node X and I would buy the Icon without hesitation. I think with the level of customer service, dedication to the Bluesound family of streamers and great software, it\u2019s a brand (Bluesound) that does not get the credit it deserves. The Node X with Teddy Pardo external Power Supply is killer. Add your best external DAC and you are golden!\nmacg19\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,541 posts\n05-22-2025 at 12:43am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@ghdprentice\nThat's a NODE N130, $349. Get that. I've got mine playing through some pretty nice gear and it sounds great. You can always add a better DAC later.\nAlso for later, an LPS is a great upgrade but the LHY LPS is a better deal and the vendor is great. Wait until your warranty expires though.\nmwinkc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n390 posts\n05-22-2025 at 03:09am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe 2i had better SQ than the 2\nThe n130 supposedly improved SQ a little, but it also introduced an HDMI input.\nThe n132 offers slightly better DAC, HDMI and DIRAC live support and they changed the headphones jack from 3.5 mm to \u00bc inch.\nI have a 2i on my basement system.\nI have a n130 on my main system where the 2i used to be. I did notice a slightly more refined sound when I upgraded.\nI've always used an external DAC so I can't speak to the DAC changes.\nmaprik\nDetails\nDiscussions\nPost","title":"Bluesound node confusion","url":"https://forum.audiogon.com/discussions/bluesound-node-confusion"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194748-2195\nEdit\nFun Electronics Videos for Guitars Speaking \u201cOur Language \u201c!\nThe brother of a friend of mine repairs and builds amps for guitars and music reproduction. He\u2019s made some fun videos, explaining the concepts of what makes a tube amp work, differences between tubes and transistors, cabling and shielding. Very enjoyable to watch and directly applicable to our hobby. He is in Los Angeles and also knows how to repair tube amps.\nTube Amps\nCables\npeter_s\n06-09-2025  3:34pm\n0 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nMore to discover\nReview: Kora Electronics Hermes DA co...\n\"Ever happen to you\" strange electronics\nElectronics for Vandersteen Home Theater\nYpsilon Electronics\nYou get to have 3 pieces: 2 speakers ...\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nAyon Audio S-10IIxs\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Fun Electronics Videos for Guitars Speaking \u201cOur Language \u201c!","url":"https://forum.audiogon.com/discussions/fun-electronics-videos-for-guitars-speaking-our-language"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194734-198972\nEdit\nDAC to Preamp/Processor, question please?\nHello, I have a Anthem AVM 70 processor, and Denafrips Pontus 15th DAC.\nIf I run RCA from Pontus DAC to AVM 70 Preamp, but leave the AVM 70 Room Correction on (this way it integrates my subs etc...), I understand I am using the AVM 70 DAC, so, is the Pontus DAC totally useless and not being used? I was pretty much advised I should maybe upgrade to the Anthem 90, as it has better DAC's, and maybe forget about the Pontus DAC?\nBut, I'm trying to understand what is really happening to the Pontus DAC signal, when also using the AVM 70 DAC's?\ntom899\n06-08-2025  3:20pm\n5 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\njond\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,109 posts\n06-08-2025 at 04:12pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTom you are using the Dac in the Pontus the RCA\u2019s you're running are from the analog outputs. It does not have a digital output.\ntom899\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n29 posts\n06-08-2025 at 05:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThat\u2019s good to know! I\u2019m more at ease now, Thank you!\naudiotroy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,001 posts\n06-08-2025 at 05:46pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nno you are not hearing the external dac, the anthem uses rom correction so any analog signal is digitized and fed to the pre/pros built in dacs\nthis is why if you have room correction you will not get\u00a0 big improvements by using an external Dac\nand we were an anthem dealer for many years the 70 is a great pre/pro and the 90 wasn't a big improvement\nDave and Troy\nAudio intellect NJ\ngkelly\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,124 posts\n06-08-2025 at 08:10pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nJust curious, was wondering if you ever tried to AB your source directly in to your Anthem? You know the old adage the less boxes in the chain the better the sound, you might have landed on this one.\ntom899\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n29 posts\n06-08-2025 at 09:40pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNo, haven\u2019t tried just the Anthem. Thanks everyone, lots to think about\nMore to discover\nQuestion about BNC to RCA adapters?\nBasic question about impedance and watts\nVandersteen 2Ci -  Bi-wire cable ques...\nQuestion about adjusting the balance\nQuestions about VPI TNT-MK-IV Platters\nRSX MUSIC SERVER RSX MUSIC SERVER\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAntipodes Audio K40\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"DAC to Preamp/Processor, question please?","url":"https://forum.audiogon.com/discussions/dac-to-preamp-processor-question-please"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194718-205881\nEdit\nIs 15amp 120v all the same?  Battery Technology\nI had a situation where the power went off in the neighborhood for some time. Thought maybe I\u2019d try to see how my second system would sound like with using Goal Zero Yeti 1500x Portable Power Station 120v 16.5amp(size of a car battery). Surprise that it sounded as good as the power coming from the wall.\u00a0\u00a0I\u2019m a believer in the benefits of clean power, quality cabling and maybe the need for power conditioners. I\u2019m using Furutec e-TP609 NCF Power Distributor(not a conditioner?). Maybe that levels the playing field. I\u2019m curious what others think about the battery setup vs standard home power.\u00a0\u00a0Is 15amp 120v all the same?\u00a0\u00a0Is the Goal Zero Yeti well advanced with battery technology or is 15amp 120 is the same no matter what?\nBefore I sent this I, I by passed the Furutec and when direct from battery to amp. Similar or same sound quality on both approaches\ngoldenways\n06-07-2025  3:47am\n7 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nbruce19\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n387 posts\n06-07-2025 at 11:24am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI noticed you are a very new member to the forum \u00a0and have not bothered to list the equipment in your system. That will make a big difference in what kind of responses you get to your question. I too have been interested in battery power and have implemented it for both my streamer and dac \u00a0in one system I own and feel it works quite well. Powering the amplifier is a heavier lift and the question arises why bother converting the DC power to AC then converting it back to DC inside the amp. All amps use the sea in their inner circuitry. All batteries supply DC and have to be converted to AC using an inverter. The inverter is the source of potential noise pollution.\ngoldenways\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n125 posts\n06-07-2025 at 02:50pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAccuphase E-4000 (A/B), T + A MR 2500 R, Harbeth Super HL5 Plus, and a mix bag of cables.\u00a0 Being an A/B amp, it draws very little power, 54-66 watts, and 4.9-6 amps at 70 dB at 7 feet.\u00a0 The Yeti, iPhone, and dB app software are not calibrated, nor do they need to be, for this exercise.\nThe battery serves as a backup in case of a power outage for the fridge and a light or two. The chance of the power going out is rare. Only twice in 5 years. As for testing the battery with an amp, it was more of a curiosity.\ngoldenways\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n125 posts\n06-07-2025 at 02:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSorry about the last post. Did not mean to have such a large font and be bold.\ngoldenways\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n125 posts\n06-07-2025 at 02:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCorrection: T + A streamer/CD player model is MP 2500 R\nbruce19\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n387 posts\n06-07-2025 at 06:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSo that is a nice amp which I am sure has good power conditioning built in being used with a beefy power station. Probably has a decent inverter.\u00a0 My sense is you will be fine. The quality of home AC is quite a local issue in any event. Much of the interference comes from within the home but the particulars of your neighborhood (any local arc welding for instance or big motors nearby) can degrade the quality.\ngoldenways\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n125 posts\n06-07-2025 at 09:43pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMakes sense about good power conditioning and beefy power station.\u00a0\u00a0I never thought about that. Thank you for your well laid out responses. As for the neighborhood, it\u2019s a large planned community 5-30 years old. All power underground. Multiple sq miles. Closes commercial building is about 1+ mile away. Have modern solar power system with no battery backup. Zero issue day or night. I have tried the battery a few times. At most 3 hours.\u00a0\u00a0There may be some unseen risk that the battery can damage the amp so no need to drain battery to zero. So, I\u2019m done messing with the battery hook up.\nWhat surprised me the most was the amp pulled only 53 amps at a fair volume. Harbeth Super HL5plus XD is rated sensitivity is 86dB 6 ohms.\u00a0\u00a0I do not know the relationship between speaker power needs and amp wattage power needs.\nwhart\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,406 posts\n06-08-2025 at 12:44am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThere was a high end audio battery solution offered for larger systems by Definitive Audio/Living Voice folks in the UK. It was quite elaborate and spendy. I use a line stage that, when operating, runs from lithium batteries, it is built to aeronautics grade, and uses tubes (and is very particular about which vintage/source of 6h30 is inserted).\nMy approach, without going completely crazy, was to trace back the power to the meter, have the meter pulled to inspect the block, then do a system \"audit\" with a commercial electrician, from feed lines to service panels, replacing and upgrading what was needed. I've lived in old houses, some going back to the colonial era, and the mishmash of wiring in some of these was frightening.\nMy present abode is an 1880s Victorian that was fully restored from the foundation up in 2004. I nonetheless did a thorough system audit, installed a subsystem running 4 gauge through a 10kVA Iso transformer that sits in a large utility box outside, and feeds 4 gauge to a service panel adjacent to my listening area. From there, I run 10 gauge dedicated lines. I did as much as I could to eliminate possible noise issues attributable to the household wiring (when we installed the whole house back up generator, I had that isolated from the audio system so that the auto transfer switch is not even in the same current path as the audio system), but there are limits to what you can do. If the grid is iffy-- and the Texas grid gets strained by heat, demand, and the need for more infrastructure to support the boom here-- there isn't much you can do. People use power conditioners in situations where their household power is questionable. I've tried them in the past and found I could always hear their effects and not for the better. But, the baseline is what your power source sounds like to begin with, assuming you don't have contributing factors in the home wiring.\nI tend to prefer commercial electricians since they are used to demanding situations, including power for stadiums and auditoriums. It may cost a few bucks to have your system gone over by a good electrician but a reputable tradesperson will not try to sell you stuff you don't need. Whole house surge is good too, although it isn't a complete solution.\nGood luck, good listening, and welcome to the forum.\nBill Hart\nMore to discover\nHarmonic Technology Fantasy AC 10 pow...\nReview: Harmonic Technology Battery P...\nEminent Technology LFT 8b?\nhas anyone had any experience with ha...\nTechnics SU-R1000 a new Class-D GaN T...\nAntipodes Audio K40\nAurender N100H\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.c","title":"Is 15amp 120v all the same?  Battery Technology","url":"https://forum.audiogon.com/discussions/is-15amp-120v-all-the-same-battery-technology"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194091-204007\nEdit\nSaving old vintage gear is a lot harder than people make it out to be.\nI\u2019ve been trying to save my Eosone rsf-600 speakers for a few months now. I noticed the highs were muffled & discovered that two electrolytic capacitors (16uf & 100uf) are used as some sort of shunt in the crossover design. I saw a Paul Mcgowan video (one of the dudes who designed the Eosones) where he makes a reasonable claim that electrolytics should be replaced by polypropylene due to the aging factor. That fixed a few problems; although, something seems off about the sound. Replacing old electrolytic capacitors is not as simple as putting in new polypropylene capacitors; there must have been some fine tuning with the orignal electrolytics in mind. The brand is made by tecate industries. Both are 50v 10\u00b1 tolerance and they are both relatively small radial leads. There\u2019s no point in buying an expensive tool to measure esr since the orignal caps must have changed in value. Are my Eosones screwed? Chat gpt has said to add resistors to poly caps but isn\u2019t esr different for higher frequencies in electrolytics?\njmncbh\n04-15-2025  6:30pm\n12 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\njeffbij\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n273 posts\n04-16-2025 at 04:31am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@jmncbh\nIt is possible that something else is off in the crossovers or with the drivers themselves and replacing the caps is bringing the problem back into the spotlight.\u00a0 Or possibly you got used to the way they were sounding and now the \"repaired\" sound is just different?\nSince these are bi-polar speakers, is it possible that the rear facing drivers were not working properly, and now they are?\u00a0 If would definitely cause a change in the sound.\u00a0 (Also keeping in mind that bi-polars need a lot of care and experimentation to get setup properly.)\nSo, are they screwed... probably not.\u00a0 Are they worth working on and fixing?\u00a0 I would say yes as long as the $$ are not too high.\u00a0 Would I go changing the crossover design by adding additional resistors to the crossover, NO.\u00a0 You could mess things up, and ChatGPT is not an Audio or Electrical Engineer.\nAnd you can always send Paul McGowan an email at PS Audio, or post something in PS Audio's forum on there web site for his help.\u00a0 He is usually willing to lend a hand when he can.\n...just my 2 cents...\n-Jeff\njmncbh\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5 posts\n04-16-2025 at 04:36am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThank you for the reply. What others could learn from me is that if you have speakers you love and they have electrolytic capacitors in the crossover: find a way to get proper measurements to find a suitable replacement. If you\u2019re too late like me, then your speakers are never going to sound the same once the electrolytics start to age. Unless, the entire crossover is rebuilt. It\u2019s the sad truth.\njeffbij\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n273 posts\n04-16-2025 at 05:10am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@jmncbh\nI wouldn't say that you need to get proper measurements to find a replacement.\u00a0 I would think the point of replacing the parts is to try and fix the speakers, making them sound as close to orginal as possible?\nAnd I wouldn't say your are too late in process....In your case, assuming that everything else in the speaker (drivers and crossovers) is ok, changing to polypropylene caps is going to change the sound.\u00a0 So maybe the thing to do is replace them with electrolytic caps of the same values.\u00a0 Yes, different manufacturers of caps will still have an effect on the sound, but I would think not as much as a change in cap type.\nI have repaired or rebuilt several sets of speakers in my past.\u00a0 From old Polk Audio Monitors (10's and 5b's), to 2 sets of Definitive Tech 10's, a set of 8's and am now fixing blown tweeters on a set of 6's, replaced panels on Martin Logan electrostatics, repaired the crossovers on Magnepan MG12s, and two different sub-woofers.\u00a0 Most of the time there was a change to the sound I had gotten used to, because there was something wrong with the speaker.\u00a0 Thus the reason to repair/rebuild them.\u00a0 \u00a0(Except for the MG-12's, which I accidently sat on the remote and turned the volume to max and destroyed the crossover.\u00a0 It was ugly..sparks and smoke....\nSo don't loose heart.\u00a0 Give the repairs a chance.\u00a0 You may find that once you get used to the \"fixed\" sound, you might like it even more.\n- Jeff\njmncbh\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5 posts\n04-16-2025 at 05:21am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks for the encouragement! I replaced electrolytic capacitors on my polk rt55's and loved the sound. I'm sure I'll be able to figure something out with the Eosones. I'm going to buy a number of electrolytic capacitors to find the best replacement for my tricky dipole speakers.\njeffbij\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n273 posts\n04-16-2025 at 06:05am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@jmncbh\nThe key is to take your time and be methodical about the process.\u00a0 Don't make to many changes at once, don't get radical with anything (yet) and don't make any assumptions...test everything.\u00a0 (Not getting any sound out of a speaker... make sure the cables are connected... and the amp is acutally plugged in...\noops...LOL)\nAnd to the whole group... If anyone happens to have a schematic for the crossovers or know where he can get a copy, it would help.\u00a0 I believe that Sandy Gross, who founded Definitive Technologies, was still at Polk at this point and may have been involved in the design of these dipoles.\u00a0 If so, the rear drivers maybe crossed over at different points than the front drivers.\u00a0 (As he did with some of the early models from Definitive.)\njmncbh\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5 posts\n04-23-2025 at 04:22am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI replaced the new polypropylene capacitors with electrolytics that mimicked the old ones & the speakers sound amazing!\njeffbij\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n273 posts\n04-23-2025 at 04:30am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nExcellent.\u00a0 Glad you are happy with them.\nEnjoy!\ntexbychoice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n176 posts\n05-05-2025 at 02:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@jmncbh\nGlad you are happy.\u00a0 For future reference here is information to consider.\nThe 100 uF cap was likely in the woofer circuit.\u00a0 Finding a reasonably sized 100 uF Poly cap is a challenge.\u00a0 You probably discovered that.\u00a0 Can usually get away with\u00a0 good quality electrolytic cap in the woofer circuit.\u00a0 Although, it was proven years ago that electrolytics should never be used in a crossover circuit at all.\u00a0 Manufacturers continue to use them due to small size and very cheap price.\nPoly caps are the best choice for midrange and tweeter circuits, hands down.\u00a0 Air core inductors are far superior also.\u00a0 Again, due to size and cost considerations, iron core inductors are frequently used.\nSand cast resistors are bad, but still frequently used due to cost.\u00a0 Do you sense a theme.\u00a0 Manufacturers skimp on crossover parts because they know most buyers will nev","title":"Saving old vintage gear is a lot harder than people make it out to be.","url":"https://forum.audiogon.com/discussions/saving-old-vintage-gear-is-a-lot-harder-than-people-make-it-out-to-be"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194579-2047\nEdit\nTone Arm lifts at end of playing a record\nOnly happening with one record. Any idea what could be the problem?\nklimt\n05-26-2025  7:45pm\n19 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nklimt\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n317 posts\n05-26-2025 at 07:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThat is before the record is over.'\nklimt\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n317 posts\n05-26-2025 at 09:50pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPlease Help!\nericsch\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n779 posts\n05-26-2025 at 09:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMake and model of TT?\nklimt\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n317 posts\n05-26-2025 at 09:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTechnics 1500c\nPost removed\nMay 27, 2025\nyogiboy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,232 posts\n05-27-2025 at 09:58am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThat one record most likely has short run out groove ( the blank space\u00a0 between the label and the last recording!\naewarren\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n794 posts\n05-27-2025 at 02:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nUnlike CD players, some turntables are picky about the music being played. Obviously your turntable doesn\u2019t like the end of that record. Or maybe it just can\u2019t wait to get it over with, is it Bruce Springsteen?\nmycarnival789\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n22 posts\n05-27-2025 at 03:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYogiboy +1.\nI use a Little Fwend. With about an 800-900 LP collection, early lift happens to me on only 2 of my albums. It's definitely the short runout\nmalbers\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n12 posts\n05-27-2025 at 05:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSome thoughts, and likely force related - too light, so it pops out:\n1. Some records can be different than others towards the end.\n2. Check the tracking force (pressure on record) setting for your player & cartridge (e.g: 1.8g) - if you haven't yet make sure the tracking force is set properly - there are some youtube video's to watch.\n- I suspect it might be too low so can pop out.\n3. Make sure your anti-skating force is properly set (usually this should match tracking force). Mine is slightly higher.\nHope this helps, I suspect you've set the tracking or anti-skating force a bit too low so it pops out.\nwestcoastaudiophile\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n819 posts\n05-27-2025 at 05:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nklimt, I installed AT6006R safety riser on sl1200gae, precisely, and.. voila, one record can\u2019t reach to the end, at one side.. that record has abnormal short runout track at one side, no worries, all other PLs are fine!\nklimt\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n317 posts\n05-27-2025 at 06:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks Guys!\nYou've been really helpful.\n:thumbsup:\nknock1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n387 posts\n05-27-2025 at 09:14pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@yogiboy\nmost likely if not certain\n@malbers\nnone of your advices make sense in OP case\nmalbers\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n12 posts\n05-27-2025 at 09:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@knock1\nI'd imagine if his tracking force is way too light, it would also be more likely to pop out (I've seen this). It's likely the record though.\nbernardwilliams\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n25 posts\n06-01-2025 at 06:58am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nQuestion rabco had a perfect tone arm lift at the end of play.\nbernardwilliams\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n25 posts\n06-01-2025 at 07:01am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhere is rabco today.\nronginsberg\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8 posts\n06-01-2025 at 04:26pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI also have an Technics SL-1500C. \u00a0What you have encountered is a \"feature\" of how this turntable operates. \u00a0This turntable has a switchable and adjustable ability to enable a tone arm lift at the end of the record and stop rotation. \u00a0It also has a feature that will shut the power to the table after about 15 minutes. \u00a0Not all these features are listed in the manual, but some of the features are mentioned in the repair manual. \u00a0First and most simply, if you do not want to engage the lift up feature you can turn it off and the turntable will operate as a fully manual table. \u00a0There is a switch to turn off the arm lift at the back of the table, see page 19 of the manual if you have trouble finding it. \u00a0If you encounter failure to lift at the end of a record, make sure you wait at least 30 seconds before you assume that the lift won't work as sometimes it takes a while. \u00a0If the arm doesn't lift after 30 seconds, then you can adjust it so that it will lift earlier. \u00a0Unfortunately this operation is not described in the manual, but it is in the service manual. \u00a0Search for it on Vinyl Engine. \u00a0The procedure is described in section 7 \"Measurements and Adjustments\"and 7.2 Auto lift-up function adjustment\". Essentially you place the turntable into Service Mode and you can program the table to pick up the arm further away from the spindle. \u00a0However, it is possible that some records with only a little \"dead wax\" may then experience tone are lift during playback of the inner groves. \u00a0So it can be a trade off. \u00a0The two settings are either 51.5mm to 56.5 mm from the spindle, or 57.0mm to 60.5 mm from the spindle. \u00a0Once I altered the setting on my table I discovered that it reduced the time it takes for the arm to lift up and it also engaged the auto lift function of a few of my records where the arm did not lift up. \u00a0To engage the function that stops rotation after auto lift and shuts of all the power to the table after about 15 minutes from auto lift up do the following. \u00a0While the table is turn off the auto lift switch. \u00a0Then hold the 33 + 45 buttons while you switch auto lift back on. \u00a0Then release the the 33 and 45 buttons. \u00a0Now after auto lift the rotation will stop and the main power will shut down after about 15 minutes.\nronginsberg\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8 posts\n06-01-2025 at 05:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI also have an Technics SL-1500C. \u00a0What you have encountered is a \"feature\" of how this turntable operates. \u00a0This turntable has a switchable and adjustable ability to enable a tone arm lift at the end of the record and stop rotation. \u00a0It also has a feature that will shut the power to the table after about 15 minutes. \u00a0Not all these features are listed in the manual, but some of the features are mentioned in the repair manual. \u00a0First and most simply, if you do not want to engage the lift up feature you can turn it off and the turntable will operate as a fully manual table. \u00a0There is a switch to turn off the arm lift at the back of the table, see page 19 of the manual if you have trouble finding it. \u00a0If you encounter failure to lift at the end of a record, make sure y","title":"Tone Arm lifts at end of playing a record","url":"https://forum.audiogon.com/discussions/tone-arm-lifts-at-end-of-playing-a-record"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193663-1541\nEdit\nHearing aids for audiophiles or musicians?\nGot diagnosed with hearing loss and tinnitus a few years back due to a medical condition. Given options of surgery to removed the calcifying bone and replace it with a titanium \"bone\" (50/50) or hearing aids. Told at time that the loss would be gradual at a undefined rate of decline. Held off due to perception it \"wasnt that bad\"and fear of surgery as well as being told that no hearing aids existed that would help in listening to music. Now due to a couple of recent events and my wife's \"urging/nagging\" as she has grown tired of repeating things, I have decided I should try the hearing aid approach. I recalled reading some threads on others in the late 60s having similar issues and references to better quality aids that were used by audiophiles and musicians. However, search of the threads hasnt surfaced those responses. So, since most of us are apparently older does anyone have similar issues and have found successful solutions? Realized that buying some new gear maybe was not going to solve some of my hearing as it was more a problem with the \"user\" and I might be better off putting the dollars into the final link in the chain. ENTs out here in Hawaii dont seem to be up on the latest so I am open to travel to see a Dr too.\njoekapahulu\n03-18-2025 10:45am\n9 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nwlutke\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n759 posts\n03-18-2025 at 11:38am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI've\nresearched quite a bit but never pulled the trigger on\nWidex\nwhich seems the most promising. \u00a0My Signia are great for general use. \u00a0But for music, not so much.\nlarsman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,218 posts\n03-18-2025 at 03:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMost any good hearing aid brands have multiple programs, and usually one of them is 'music', that you can work with your audiologist on EQ'ing to get the best sound for you. Like other audio gear, different people will prefer different things. I've worn hearing aids for over 20 years, and the difference it makes between listening to music without them in and with them in is immense. I'll never listen to music without hearing aids again.\njoekapahulu\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n270 posts\n03-19-2025 at 09:39am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks all for feedback. Found a site that is all about HAs and there is a long string on \"audiophile hearing aids\" that is very interesting and offers some more input. Have another ENT appointment coming up and one of my questions is can he project how much more loss I can anticipate with this condition as well as probability it will move to my other ear. It is supposedly a more common condition with women but I guess I got \"lucky\" :-(\u00a0\u00a0 I also need to get more info on the surgical approach even though it gives me the willies to think about it.\ndinosore\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n114 posts\n03-21-2025 at 01:41pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThat's odd, there were a number of threads on Audiogon on this topic.\nI did some research and the Widex Moments kept coming up as a recommendation for musicians and audiophiles. My audiologist also recommended them. I got them a little over a year ago and have been very happy with the results. There are different settings, including one for Music, and all of the various settings can be further customized. My music listening has been greatly improved, and the HAs have helped a lot with my tinnitus (although there is no guarantee that your tinnitus will improve).\nNote, however, that the technology in this area is moving rapidly. Widex just announced a new line with more advanced tech, and I am sure there are other brands doing the same.\nceltic66\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,974 posts\n03-23-2025 at 02:52am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWidex is reportedly quite good. \u00a0Business associate running a high end stereo shop swears by them, about 7K.\nFinanced hearing aids through Costco for a musician friend who swears by them and Costco\u2019s service. \u00a0Believe those were 2K. \u00a0Honolulu has Costco. \u00a0They are not Widex.\njoekapahulu\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n270 posts\n04-01-2025 at 02:36am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@Celtic66\u00a0 Yeah, I spoke to the folks at Costco. Because my issue is driven by an actual disorder medically and not \"normal age related loss\", they were leary about discussing anything. They recommended I work with the ENT Dr and see what he tells me and if he recommends HAs then they will see what they can help with. They said point blank that I would be more likely to need something much higher end than they sold to get real quality sound in the case of Music. Got the same response at Sams Club. I am just going to wait and see what comes out of the Drs visit. It has been 3 years since the initial diagnosis and only recently that it has become clear that my loss has accelerated and the frequency of tinnitus occurring is more often.\u00a0 Appreciate your response and everyone elses.\nlarsman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,218 posts\n04-01-2025 at 03:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@joekapahulu\n- hi there - The models that Costco sells are the previous top-of-the-line models that they've since upgraded in some way with the current models.\u00a0 I've got Jabra ones and am delighted with how music is with them.\nNot every Costco or Sam's Club hearing aid center has the most informed audiologists, and I would go with what a regular audiologist suggests (unless they're just trying to make a sale) over what the people at Costco or Sam's Club would tell you.\nI got Widex in-ear hearing aids 4 or 5 years ago, and I didn't much like them for my headphone listening; could just be an issue with the audiologist's programming; that was the best she was able to come up with.\nBut it's all so subjective what people think sounds good to them.\njoekapahulu\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n270 posts\n05-15-2025 at 09:48am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks to all for input. Saw ENT and had new test and surprisingly the deterioration was very minimal (maybe just the frequencies my wife's voice uses?). Anyway, the audiologist suggested that there has been lots of improvement in HAs ability to address music in the last few years with sw apps. So that was encouraging. I also spoke to the another person at Costco and got a more detailed explanation of things there. Interestingly they sell some major brands but under different names...e.g. Sennheiser is Phonak, other names are well known too. Suggested I come in and do the test with them, which is required, and see what they can offer. They do have a return policy which helps. Also spoke to a friend who is a musician and wears one and he got his from Costco, a Jabra which he likes. Now have to see where this all goes. Mahalo.\ndelm\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n65 posts\n06-03-2025 at 06:43pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI purchased from Costco Canada in early 2023 Rexton brand ITE, in","title":"Hearing aids for audiophiles or musicians?","url":"https://forum.audiogon.com/discussions/hearing-aids-for-audiophiles-or-musicians"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n128826-93547\nEdit\nHome Wiring Improvements For Better Quality Sound\nPeople are flocking to buy high-end plug strips and thousand dollar a.c. cables and may still have problems that are easy to address, and may result in a marked improvement in entertainment system performance.\nThe place to start is at the point where the electrical service enters the building. Very often, varying amperages have heated up the primary conductors, and these have changed shape inside the screwed-down compression connectors, enough so as to introduce a slightly higher resistance, which may result in a loose connection, at\nonly certain times and under certain loads.\nThis job is for a qualified electrician.\nThe idea is to loosen the compression connectors on the primary cables, to burnish their copper finish with Scotch Brite, to add a dielectric grease such as No-Ox-Id \"A\" (Special), and to reclamp the wires in their compression connectors with plenty of torque so as to firmly seat the cables and to ensure solid connections.\nThe next place to work on is the circuit breaker panelboard distribution cabinet. You will find circuit breakers with corroded spring-clamp attachments, etcetera, being fed from buss bars in the cabinet. All these need to have\ntheir mounting connections taken loose, cleaned, greased and refitted.\nNext, the White, or a.c. return legs. All these (sometimes referred to as the Neutral) conductors also suffer from heat-related expansion and contraction with subsequent buildup of corrosion. Same treatment as all the rest before: Loosen, clean, grease and re-attach firmly.\nOnce the panel board is done, move on to the convenience outlets. Question: Do your convenience outlets have screws clamping the wires, or are they all the \"push-in\" variety? Switch from push-in types to outlets with screws to eliminate a possible source of high resistance from corrosion.\nThis is all possible for much less money than thousands of dollars spent in high-end cabling. Eliminate the most common sources of interference before thinking about upgrading the hifi.\nMany years ago, a customer called me in on a service call, telling me the data download at night was failing, and they were confused, because most electrical interference would happen during working hours. After three repeat calls, I attached a recording line monitor to the a.c. distribution panel primary wiring and left it recording all night. At 2:30 a.m., a chiller unit on the roof would kick in to defrost the tubes, automatically. This device was on a circuit where the neutral or return a.c. current wire, clamped in a buss bar screw-down attachment, was loose enough to cause a spike just when the chiller started up, and right smack dab in the middle of the data transmission to the accounting office.\nFrom then on, whenever hearing complaints of squirrely \u00a0power issues, the first step was a refit of all the electrical power clamped attachments, and ninety-nine percent of the problems were abated.\nka1xo\n03-11-2017 10:34pm\n6 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ngs5556\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,284 posts\n03-12-2017 at 12:13am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nA word of warning: those compression lugs on the service entrance conductors are live even if the main breaker is switched off. This is a job ONLY for a qualified electrician.\ncleeds\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,635 posts\n03-12-2017 at 12:48pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nUsing dielectric grease on connections inside an electric service panel does not seem like a good idea to me at all.\nlivinon2wheels\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n274 posts\n05-30-2025 at 04:20am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@cleeds\nWhy would using a compound that enhances conductivity and reduces corrosion over time within an electrical service panel be a bad thing?\ncleeds\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,635 posts\n05-30-2025 at 12:18pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPlease read what I wrote,\n@livinon2wheels\n. My objection was to using a dielectric grease.\noldelectricalinspector\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n70 posts\n05-30-2025 at 01:10pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOnce a conductor has been torqued, it should never be re- \u00a0torqued. \u00a0The conductor needs to be cut back and the properly terminated . \u00a0UL tests have verified that once the individual strands have been compressed they can\u2019t effectively be re-terminated\nhbarrel\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n554 posts\n05-31-2025 at 11:18am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOther than preventing corrosion die electric grease provides no benefits to electrical conductivity.\nMore to discover\nLooking to better my redbook action....\n45RPM reissues: really better one-sid...\nWhich of my components has the better...\nCary SLP-03 pre-amp:  Does it need be...\nCLEARAUDIO - UNIFY 9'' better than OL...\nAurender N10\nVolumio Primo Plus\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Home Wiring Improvements For Better Quality Sound","url":"https://forum.audiogon.com/discussions/home-wiring-improvements-for-better-quality-sound"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194585-184946\nEdit\nHelp to Identify AC Connector\nCould anyone please assist me in identifying this AC connector? It is 5/8 x 1 inch and is on the output of a 24VDC 3kW inverter. (I need to purchase a matching male connector.) Any suggestions of part description and possible sources are welcomed. Thank you in advance for your help...\ntsampa\n05-27-2025  7:53pm\n5 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nPost removed\nMay 27, 2025\nfreediver\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,467 posts\n05-27-2025 at 09:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThat is an MPPT Smart Solar Charge Controller connection...You'll need to do some googling because there is a lot of info to assimilate..\nimhififan\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,260 posts\n05-28-2025 at 02:09am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt is a direct wiring socket, please\u00a0refer to the manual for wiring method:\nhttps://www.epever.com/wp-content/uploads/2021/09/IPower-Plus-Manual-EN-V3.4.pdf\nIf you prefer to use some kind of connector, maybe you could try some wire ferrules, just make sure no metal parts are exposed.\nhttps://www.amazon.com/Self-adjustable-AWG-23-7-Electrical-Connectors\ntsampa\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n47 posts\n05-28-2025 at 05:16am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThank you both for your help! I'm happy to direct wire the socket, but I wasn't sure of the gauge or force required to push the wires in. The manual helps and obviously a solid conductor is best. I will play with it...\nOn the side: I find that even though the inverter is claimed to be pure sine wave, my torroidal transformers buzz when connected. I understood this to be a sign of a DC offset in the AC waveform, which causes the transformer to saturate - clearly not a good thing! Any suggestions, please? Thank you.\nimhififan\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,260 posts\n05-29-2025 at 03:19am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDC blockers are easy to make if you're handy. Otherwise, try the Emotiva CMX2.\nMore to discover\nHardwire speaker driver connectors?\nWBT RCA Connectors\nRight Angle Connectors for DIY Power ...\nEichmann Bullet Connector versus XLR\nRecommend: Thin spade connectors\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAurender N10\nAuralic Aries G2.1\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Help to Identify AC Connector","url":"https://forum.audiogon.com/discussions/help-to-identify-ac-connector"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194594-205779\nEdit\nMic signal\nHello,\nI understand that it is difficult to capture a voice audio signal when there is distance between the microphone and the source. I am looking to mic a person's voice with about 15 feet between the microphone and the person. However, the quality of the capture does not need to be high --- only good enough to discern what the person is saying. Does anyone have any suggestions on how to best accomplish this? Mic, amp, etc.?\nThanks!\nt-forcepro\n05-28-2025  6:55pm\n1 response\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ncleeds\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,635 posts\n05-28-2025 at 07:14pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou can use a\nshotgun mic.\nMore to discover\nNew E.A.T. small signal tubes\nhow can I get DSD signal from my Sony...\nI was told I2S  is a better signal fr...\nHave someone used Signalcables silver...\nTransport signal thru mult cables sim...\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10IIxs\nFocal 36 MONTH FINANCING\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Mic signal","url":"https://forum.audiogon.com/discussions/mic-signal"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194271-145775\nEdit\nWill AI. Minimize the Design differences  of audio\nWith AI \u2018s ability to search the world in seconds for audio designs will we get to the point of nominal \u00a0sound differences in equipment\nright now it seems most differences are in parts used not necessary design\nyour thoughts\nsawbuck\n04-28-2025  6:46pm\n39 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n04-28-2025 at 07:33pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nA.I.\u00a0 will be used to improve audio for sure at a level unknown now....\nJust look at the acoustics process used by Dr. Choueiri to create the soundfield...\nNow imagine you use A.I. to analyse\u00a0 the hearing process of each listener and optimally match it with his room...\nAlso we can use A.I. in the design process of any audio gear for his acoustics optimization...\nhbarrel\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n554 posts\n04-28-2025 at 09:49pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy brother does high level tool path programing. (Think a single part worth hundreds of thousands to millions) Anyhow we were talking about a future in his area of expertise. He said he is glad to be on the way out and not on the way in.\nA solid model will be sent to A.I. and a tool path along with all the required tools will be generated in no time at all.\nIn audio wave analysis, finite structural analysis, material analysis, electrical signal layouts among a plethora of other things are coming. Not a matter of if. Only when.\nspenav\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n557 posts\n04-29-2025 at 01:26am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWell, honestly, AI power is not its ability to search the world in second. Any good search engine can do that nowadays. It's a little more complex than this. But the answer to your question is a resounding yes. Frankly, the patent concept is what is slowing down human progress. If I discover something first, then you cannot use it even though you were looking for it too and was close to the solution. AI is going to be like the Internet and computing power on steroid. We are lucky IBM wasn't selfish when they created the PC, they allowed anyone to clone it.\u00a0 Thanks IBM. Same with America's willingness to open the Internet to the world. Let's hope AI will be open to everyone.\nmopsauce\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n31 posts\n04-29-2025 at 11:07am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDefine AI. Questions on Audiogon could stand to be tighter. A human is still required for non-linear thinking. Assembly. And even asking AI the correct question in the first place. If you don\u2019t understand physics then your questions will probably be less than useful. It\u2019s funny watching folks answer questions like this. It\u2019s armchair psychology for me. Blowhard know-it-alls, ethereal dreamers, dealers chiming in but not selling\u2014I actually wish they would incorporate more sales into their responses, and the purist with only one wire and AI can\u2019t breath like an open baffle.\nmy real answer actually sucks more then I would want. When I run this sim, and I did this every which way. AI will help private equity push manufacturers into a resolution deemed good enough. Then it can streamline and leverage harder. Less research for pure awe. This will make top engineers seek work in a different growing field. The highest end won\u2019t be affected as long as they stay small boutique.\nin short, we don\u2019t need better computers we need better people. AI can\u2019t make leaps of discovery, but I can.\neurorack\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n72 posts\n04-29-2025 at 02:18pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDude. AI is not up to the task. Period.\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n04-29-2025 at 02:19pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nA.I will makes the general population\u00a0 completely dumb...\nOnly a few will use it as a tool....\nIt will be a god for lesser mind who without need to use their brain will walk listening to their god as zombies...\nOligarchs sell it as miracle solution it will be in many fields as surgery and others\u00a0 one ...But for the average dude it will the death of his working brain as TV\u00a0 was\u00a0 and way worse...\nThis week i spoke about History and a dude oppose an argument using Grok, he completely misunderstand the matter under discussion and blindly confide into A.I. oracle...\n\u00abData\u00a0 will make us beta\u00bb-- Groucho Marx\n\u00abWhy working harder to learn to write and read if the machine does it better for me?\u00bb-- Anonymus dude\nmulveling\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,475 posts\n04-29-2025 at 03:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nA.I. is still a very poor substitute for precision engineering. No telling if it will cover the gap anytime soon, but it\u2019s definitely not a given. There are certainly questionable audio designers making questionable things out there, and A.I. might help them - but the fact someone would use A.I. to help design a circuit should be a red flag they don\u2019t know what they\u2019re doing, OR that what they were doing is extremely simplitsic and already copied / known everywhere.\nUnfortunately our hobby is a bit like the Garfield Mondays gag - every time you think the landscape in here can\u2019t get any worse, it does :(\nHigher prices AND wonky A.I. design? No thanks.\nA.I will makes the general population\u00a0 completely dumb...\n@mahgister (agon's at-mentions are wonky again) This is a real fear. EVERY generation before us has had thier own \"thing\" which they thought would kill society - but yeah, this one is a bit frightening.\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n04-29-2025 at 04:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCongratulation for your magnificent Tannoy...\nmulveling\nI like your system....\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n04-29-2025 at 05:45pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNo. Because there. Are many flavors of the desired \u201cideal\u201c sound.\nmitch2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,780 posts\n04-29-2025 at 06:47pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nA.I. is tool that can primarily improve speed and accuracy in completing a task.\u00a0 In one medical field study, ChatGPT outperformed doctors in diagnosing medical conditions from case reports (i.e., improved accuracy), and did it quicker (i.e., speed).\u00a0 In my technical/engineering field, we are considering an internal A.I. tool based on our 60 years of documented experience.\nTherefore, yes, I fully expect A.I. could be used to generally improve audio designs but there will still need to be a designer with a personal vision who can interpret the A.I. results and utilize them to avoid pitfalls and possibly learn from what others have done previously.\u00a0 Somebody has to listen to prototypes and decide what the final product will sound like.\u00a0 Also, there is probably enough misinformation related to audio that even A.I. will not get it right all the time.\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n04-29-2025 at 07:21pm\nCopy Comment URL\nReport Comment\nEdit\nDe","title":"Will AI. Minimize the Design differences  of audio","url":"https://forum.audiogon.com/discussions/will-ai-minimize-the-design-differences-of-audio"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194542-91377\nEdit\nWasted amp power to limited range speakers...how degrading is it to SQ?\nPer title, basically trying to understand the electrical science more with power amplification and transducers in passive speakers when it comes to low frequencies the speakers may struggle to produce. to start with, here\u2019s my amp/speaker chain right now:\nSF Sonetto 1\nArcam SA20\nSVS Micro3000 sub\nNOTE: I probably am restating the same question in multiple ways, or maybe asking questions that are\ndifferent to be tied together well\u2026i simply don't understand electrical physics for this stuff well at all.\nI use preout on my arcam to the sub and lowpass to set sub performance well...but I\u2019m more concerned with the power chain to the sonetto\u2019s. Power to produce all frequencies is being sent to the sonettos\u2026including frequencies they have no hope to reproduce. Given lower octave frequencies are\nmost\ndifficult to properly power for an amplifier\u2026isn\u2019t it massively detrimental to it\u2019s power delivery/speed elsewhere in the midbass+ frequency ranges?\nIsn\u2019t the amp doing its\nhardest\nwork for nothing? I understand that the arcam is neither AVR nor a very high end piece but am I misunderstanding power delivery to think this is a huge issue with this amplifier and others that don\u2019t have adjustable high pass filters for stereo speakers? if it is a detrimental effect\u2026what would that look like? Leaner delivery? more vol cranking to get going?\nWhen i\u2019ve read reviews in the past of amps that\n(say, parasound hint 6 or something), its discussed as a nice bonus feature\u2026when my intuition (though incredibly novice here) screams that this is much much more detrimental than \u2019oh well cant have everything\u2019, more like a significant kneecap in its speed and control?\nif it's not an issue, is it because theres some element in the power amplification stage that routes power appropriately\nthe given speaker? is it up to the speaker to handle that (even if passive)? Wouldn't think the latter for passives but maybe the power stage part? im lost lol.\nWhat am I missing? Is it not a big deal? Is there some factor to the sonetto woofer\nactively moving to produce lowest frequencies that makes it not draw much power to begin with for those? what about the lowest frequencies it CAN \u2019produce\u2019 (though not in the best manner)...say 40-60hz region etc.\nI tried looking for threads but honestly didn\u2019t quite know how to search this and didnt find quite the results i was looking for.\nTLDR:\n- When a speaker has limited frequency range, how are amplifier stages handling energy \u2019needed\u2019 to produce frequencies outside of the speakers ability?\n-\u00a0is the speaker simply not drawing energy for those from the poweramp stage?\n- Is there NOT a tremendous waste of energy by speaker and/or amp to worry about?\nzander024\n05-23-2025  9:53pm\n4 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nkofibaffour\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n726 posts\n05-23-2025 at 11:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nyou're not wasting anything. you're fine and overthinking it. Some amplifiers are more efficient so there's that but don't fret\n@zander024\nkennyc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,146 posts\n05-24-2025 at 01:41am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n+1 you\u2019re overthinking this\nAmps are rarely used to their full power. \u00a0Increased headroom often leads to better sonics running at lower wattage. \u00a0Only class A is considered highly inefficient as it runs full power and gives off lots of heat. \u00a0Understanding a speaker\u2019s impedance and phase angle graph helps to understand how easy/difficult the speaker is to drive including electrical current needs. \u00a0Understand a speakers frequency to amplitude graph helps to understand how neutral a speaker is and it\u2019s frequency extremes.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n05-24-2025 at 03:46pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHi OP:\nSo without a high pass filter before the main amp, the main amp produced the same voltage no matter what the sub does, and the speakers attempt the bass frequencies as best they can.\nFrom a technical perspective, adding a high pass filter before an amp can really reduce wasted power... but it's rare that it even matters outside of professional applications.\u00a0 What really matters is reducing the distortion of the midwoofer.\nIt is often highly beneficial to high pass the main speakers and, if ported, to seal the ports.\u00a0 Use as high of a cut off frequency as you can (80 to 120Hz), not the lowest. The real sonic benefits of a sub + satellites comes when you can reduce the distortion of the mid-woofer.\nBest,\nErik\naudio_guy_uofw\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n79 posts\n05-24-2025 at 10:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThis is typically not really an amplifier issue, unless you are pushing the output capabilities of the amp. It IS a speaker issue, however, as the LF can heat up the voice coil even if the speaker can't reproduce them, and they can cause significant cone excursion. Plus depending on the design the LF can modulate the higher frequencies causing distortion. So for the speaker it is indeed better to limit the input to frequencies it can reproduce.\nMore to discover\nrecommendations of phono preamps  &lt...\nStrange film on new records.\nStrange thing happens when I bias my amp\nBest mid-range for $3K\nBest power cords in the $250-$400 range?\nAyon Audio S-10IIxs\nAurender N10\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Wasted amp power to limited range speakers...how degrading is it to SQ?","url":"https://forum.audiogon.com/discussions/wasted-amp-power-to-limited-range-speakers-how-degrading-is-it-to-sq"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n124170-41\nEdit\nSynergistic Grounding Block and Tweaking it.\nSynergistic Grounding Block and Tweaking it.\nI always liked the Synergistic Products and I have to give them credit for bringing out some of the most unique tweaks available today. There interconnects, speaker cables, and power cables were always top notch, perhaps a little pricey, but I always hated all of those extra mini couplers wires! So, I moved away from their wires. I think there new series does away with the extra mini couplers, but they are still IMHO still quite pricey.\nI wanted to try the Synergistic Grounding Block. The price was not too expensive, so I ordered one from my dealer. Did I mention I always hated all those darn extra SR wires? This grounding block better impress.\nOnce I received it, I couldn\u2019t believe the size of it. It is about 6 \u201clong and maybe 1 \u00bd\u201d thick and about 2\u201d inches high. At one end it has a hole for accepting a regular size banana plug and on the top there are 18 pin hole openings. The grounding block comes included with six (6) of the skinniest wires with the smallest banana plugs I have ever seen for grounding! There is also included another skinny wire that is connected to an AC plug (ground only) that plugs into the wall outlet with the other end having a standard size banana that connects to the side of the grounding block.\nWell, since I only own one other SR product, I changed five (5) of the rest of the banana plug ends to RCA so I was able to try it with my own non SR equipment.\nTo my surprise, it did indeed make the soundstage purer and deeper. I don\u2019t understand it? All of my equipment is plugged into dedicated grounded outlets, so why would this little diminutive grounding block with all those skinny wires do more?\nNow, the tweaker in me took over. It seems SR also sells higher grade connection ground cables, but boy, are they pricey! Two of them cost more than the block itself! And the Synergistic grounding block can accept 18 of these ground connections!\nI had some pure .9999 22 gauge silver wire left over from another project so I installed an RCA connector, sleeved it through some Teflon tubing and pushed one end into one of those 18 pin holes in the grounding block. To keep the wire from falling out of the pin holes, I pushed cut 2\u201d lengths of some .999 18 gauge silver wire also into the pin hole which tightened up the connection. On the end, the RCA was connected to an unused RCA on my equipment. I also had some pure .999 16 gauge silver wire, so I installed this on one end with a regular banana, and then installed an AC plug (ground only) to the other end. This replaced the skinny wire that SR supplied to connect from the wall to the grounding block.\nSounding better\u2026 interesting!\nOn line I found some 12 gauge .9999 silver wire about 6 foot long, that cost about $50. But with this cable, to keep it pure throughout I used no connector on either end. I did this by shaping the wall outlet wire end into a V and pushed it into the wall outlet for a tight fit. The other end was crimped tight and shoved into the regular banana hole into the grounding block.\nEach \u201cupgrade\u201d in wire went through a minor break in period. (hours not days) and doggone it, it did increase the purity of the sound.\nSo, now with the 18 available pin holes in the grounding block, I have all of my system connected. That includes my video and subwoofers!\nSomeday, I would like to try one of the higher grade SR cables to compare to my DIY version.\nFolks, this little grounding block does work wonders and far exceeds the price to performance, but it is still a mystery to me. Plus all those darn wires!\nEnter your text ...\nozzy\n04-16-2016  1:53pm\nNext \u203a\nLast \u00bb\n70 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nPost removed\nApr 16, 2016\nmichelzay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n114 posts\n04-17-2016 at 05:42am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOzzy,\nEven though it is not related to SR ground box, hope that would help.\nRegarding Grounding box, there are a couple of other companies doing as such like Entreq. There are also some links explaining inside of Entreq GB:\nhttp://www.whatsbestforum.com/showthread.php?11995-Entreq-Tellus-grounding/page169\nIt shows there is not too much inside a box retailing for more than $1500.\nThere is also this link explaining how to make a Grounding box.\nhttp://www.monoandstereo.com/2015/11/interesting-ground-box-project.html\nReading your comments shows you like to make some DIY projects. That's why I mentioned these two links. My own experience on DIY projects especially on Power cords (with measured RFI filtering/rejection) resulted on more fruitful and much better performance compared to very expensive power cords. This Grounding box is kind of the one I am working on.\nMichel.\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,825 posts\n04-17-2016 at 02:06pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nInteresting concept, thanks\u00a0(guys) for the post and comment.\nI'd like to hear what\nalmarg\nand/or\u00a0jea48 has to say about a grounding block. I always learn so much then those\ngentmen\nengage in conversation.\njperry\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,542 posts\n04-17-2016 at 02:25pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGranite Audio makes a similar product as well. You might want to look at it.\nozzy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n7,835 posts\n04-17-2016 at 03:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWow! Pretty cool. Thank you so much for the info.\nBut still, why should this improve the sound? After all my components are all plugged into grounded outlets.\nmichelzay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n114 posts\n04-18-2016 at 05:14am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOzzy,\nThere are two issues: 1-Grounding box types like SR, Entreq and Tripoint dedicated to Grounding on interconnect level circuitry. 2- grounding on AC outlet which affects also circuit level grounding on other way.\nBriefly speaking, this is because most of Audio circuit designers use chassis grounding as main base of circuit level ground. Obviously noise generated from Chassis structure would affect audio sound quality. Otherwise, If circuit design is done properly, these GR boxes have no affect and are useless.\nSome GR Boxes having an attached  power cord would add some kind of EMI cancellation by using a filter/capacitor. Filter is attached between line to ground or neutral to ground connections. This could eliminate interference in an asynchronous way.\nThese filters/capacitors cost less than a dollar! Some using those on their power conditioners like Shunyata Research. For more lecture you may look at this article:\nhttp://www.10audio.com/diy_power_conditioner.htm\nSynergistic Research GR box seems to be more modest on their pricing compared to Entreq and Tripoint (>$15000!!). Tripoint GR box is heavy as 90Ibs! One thing is sure, circuit part wouldn't be more heavier than 1Ib!!!! There are always online magazines with non-ethical cheap reviewers that would praise these as wonderful... But reality is certainly doesn't converge with those reviews.\nMichel.\nozzy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n7,835 posts\n04-18-2016 at 01:50pm\nCopy Commen","title":"Synergistic Grounding Block and Tweaking it.","url":"https://forum.audiogon.com/discussions/synergistic-grounding-block-and-tweaking-it-3"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194369-1479\nEdit\nHarman To Acquire B&W, Denon, Polk And Marantz From Masimo In $350 Million Deal\njust saw the above announcement--of particular note is that masimo paid over a billion for the same brands just a few years ago. not sure whether harman will add any value--they've neither hurt nor helped revel or arcam--or what this move indicates about the consumer audio market generally, but this doesn't bode well for the future.\nloomisjohnson\n05-07-2025  1:14pm\n48 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nroxy54\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,245 posts\n05-07-2025 at 01:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWow...that sounds like a fire sale for all of those brands.\nupshift\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n92 posts\n05-07-2025 at 02:27pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThat does sound like a bargain price for those brands.\u00a0 Masimo didn't know what to do with those brands, hopefully Harman can be a better fit. Though you have to wonder what kind of attention each brand gets with the portfolio that Harman currently has.\njayctoy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,659 posts\n05-07-2025 at 02:37pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMasimo on Marantz don\u2019t have technical support after warranty. Even if you pay on your own pocket ? Their authorized repair shop won\u2019t do it.\njayctoy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,659 posts\n05-07-2025 at 02:38pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI thought Harman acquired Mark Levinson as well?\nonhwy61\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,459 posts\n05-07-2025 at 02:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHarman\n(Harman Kardon, JBL, Mark Levinson, AKG, Infinity, Bang & Olufsen, Lexicon, Revel, Becker, BSS Audio, Crown, dbx, AMX, Arcam, Soundcraft, Martin, and JBL Professional)\nis owned by Samsung\ngano\nDetails\nDiscussions\nPosts\nThis discussion\n750 posts\n05-07-2025 at 03:13pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSounds undervalued. I see a bright future for Polk and B&W, they are very strong in their own segments. Marantz and Denon are probably OK but obviously not doing as well as they could.\nmitch2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,780 posts\n05-07-2025 at 03:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSounds like Harman is doing fine, which is good since I continue to enjoy my early-adopted lifetime subscription to Roon!\nSince Harman is a subsidiary of Samsung Electronics, then S. Korea must also be doing well.\ngano\nDetails\nDiscussions\nPosts\nThis discussion\n750 posts\n05-07-2025 at 04:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nand since S. Korea is part of the Planet.... :) Oh no\ntexasblues1959\nDetails\nDiscussions\nPosts\nThis discussion\n188 posts\n05-07-2025 at 04:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWith the exception of Levinson, Martin and to a degree B&W it is all mid-fi brands.\nFire sale indeed.\nloomisjohnson\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,021 posts\n05-07-2025 at 05:43pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nmassino also owns definitive , classe, heos and boston acoustics. i haven't seen sales figures, but i'd think only b&w (which does some car audio) and denon would have a lot of momentum--their other brands don't seem to have the same presence they once did.\nbbarten\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n97 posts\n05-07-2025 at 05:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt's kinda sad to me that these brands aren't owned by people who really care about sound.\nmapman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23,710 posts\n05-07-2025 at 06:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNothing stays the same forever.\u00a0 For every fading star there will be a new bright one and vice versa.\u00a0 \u00a0THose are fine brands but nothing all that unique or special about any of them any more\u00a0 \u00a0that I can think of.\u00a0 All easily replaced perhaps by other items offering high quality and value.\nbassbuyer\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n947 posts\n05-07-2025 at 06:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nConsolation is ongoing in all industries. \u00a0I love my Revel speakers, Denon AVR and Lexicon stereo in my car. \u00a0I have a Samsung fridge and washer. \u00a0I think everything else is made by Yamaha. \u00a0Innovation is important to stay competitive, profitable and on top. \u00a0It\u2019s eat or be eaten in business. \u00a0When the lion is hungry he eats - cue Matthew in The Gentleman. \u00a0Looking forward new and better equipment whoever owns the company.\nmapman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23,710 posts\n05-07-2025 at 07:46pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe only thing in my system so unique that I consider irreplaceable are my Ohm Walsh speakers.\u00a0 If Harmon buying the company were needed to keep it alive so be it.\u00a0 It\u2019s a very small privately owned company with limited production capabilities so would actually be interesting to see what a large company like Harmon might be able to do.\u00a0 Regardless, I will be hanging on to the Ohms I have for the foreseeable future.\nI also own gear from Cambridge Audio, Class D Audio, Schitt, Linn, Electrocompaniet, Denon, Rega, Polk, KEF, Sonus Faber, Fosi, Yamaha, Bel Canto, Boston Acoustics, Dual, Goldring.\nkofibaffour\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n726 posts\n05-07-2025 at 07:50pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGood. Masimo was a terrible owner\nmapman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23,710 posts\n05-07-2025 at 07:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHow could I forget Roon?\u00a0 \u00a0Harmon has done wonders for Roon.\nquincy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n487 posts\n05-07-2025 at 08:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@loomisjohnson\nThanks for the post!\u00a0 This is very important information.\u00a0 I have seen nothing in the news feeds I get on a daily basis.\u00a0 Might be a good idea to purchase stock in Samsung, as they now own (or soon) a large section of the audiophile equipment market!\njpag\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17 posts\n05-07-2025 at 09:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@mapman\nWhen I was much younger I would have loved to have gear from many of the mentioned brands. Now I don't have nary a one.\nlonemountain\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n513 posts\n05-07-2025 at 09:13pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIs all china or India now.\u00a0 \u00a0Most of those brands dont make anything in their home countries and the few that do make only a few of their small quantity highest end products there.\u00a0 The real thing of value in those brands is the car audio.\u00a0 There is millions available when you outfit a 500,000 new cars and Harman is HEAVILY invested in car audio.\u00a0 ATMOS is coming and these cars will have 15, 16, 17 channels with speakers everywhere, including overhead.\u00a0 The small amount of stuff B+W sells to audio dealers is dwarfed by the automotive business.\u00a0 \u00a0Here in Las Vegas, a purely audio store cannot make it work, they have to do home theater and video to turn any kind of profit.\nAnd doesnt Samsung own JBL?\u00a0 Harman so","title":"Harman To Acquire B&amp;amp;W, Denon, Polk And Marantz From Masimo In $350 Million Deal","url":"https://forum.audiogon.com/discussions/harman-to-acquire-b-w-denon-polk-and-marantz-from-masimo-in-350-mill"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193872-161078\nEdit\nHave You Seen - 10 Characteristics of Great Audiophile Sound\nI ran across this article:\n10 Characteristics of Great Audiophile Sound\nand wanted to share on Audiogon (as I think it makes some great points) and secondly to ask this community if there are any other characteristics you would add as further discussion points?\nFor my own amusement I\u2019ve scored my subjective level of achievement against the 10 characteristics and that was an interesting exercise too that you might like to use to rate your audiophile sound?\nsparksgja\n03-29-2025 10:46pm\n14 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nbdp24\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10,509 posts\n03-30-2025 at 12:37am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAnd in the discussion of point 1 (the speakers should disappear in the room), they show a pair of PS Audio FR30\u2019s right in front of a wall of glass windows and doors. Duh. And that goes for PS Audio too; the picture was taken from the PS Audio website. Double duh.\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n03-30-2025 at 01:04am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI was very skeptical when hearing the title... expecting a list of esoteric stuff about transparency and microdynamics. But at least the titles aren't that bad.They are fine... I would come up with different ones... but there would be overlap.\n@bdp24\nYeah... that photo is of a system guaranteed to sound terrible. Obviously a marketing shot.\nsteakster\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,220 posts\n03-30-2025 at 01:36am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHow about:\n- Musical instruments sound real. *\n- Vocalists sound real.\n- The presentation sounds like music. Not like a HiFi that\u2019s reproducing music.\n- - -\n* Electric instruments, amplified instruments, synthesizers- difficult to tell.\nbdp24\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10,509 posts\n03-30-2025 at 03:44am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@ghdprentice\n: A marketing shot, yeah. But what kind of potential customer does PS Audio think the picture will attract? A woman? A novice audiophile? I don't think anyone new to high end audio is going to be buying a pair of PS Audio's $30,000 FR30 loudspeakers.\njsalerno277\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n533 posts\n03-30-2025 at 05:12am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTo me, the list is a subset of the groundbreaking literary work by J. Gordon Holt starting in 1962 in\nStereophile\nand summarized in\nSounds Like? \u00a0A Audio Glossary\n,\u00a0Jul 29, 1993 and Harry Pearson starting in 1973 and summarized in\nHow to Readthe Absolute Sound,\nfor which I do not remember the formal reference. Yes this podcast addresses key points of audiophile sound and simplification is not a bad thing for some, not for me. \u00a0I may disagree with you George (\n@ghdprentice\n) in that I miss the list of esoteric stuff and artistic descriptives of the many aspects of sound from the \u201cold\u201d days of those publications that challenged and stimulated my mind to understand the sound of a system or equipment from the reviewers perspective. \u00a0I understood what Mr. Pearson ment by a chocolatey sound. \u00a0 I find the current reviews sterile, without passion, and tamed by the hand of legal\nreview in our now more litigious society, making it more difficult to ascertain the sound from the reviewers perspective. I agree with\n@steakster\nin that the list misses the attributes of audiophile sound most important to me \u2026 timbre \u2026 for without timbral accuracy it cannot approach the sound of real music, and is that the point of the hobby. \u00a0So again I have been too verbose in expressing the fact that this simple list is too simple.\nknotscott\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,430 posts\n03-30-2025 at 01:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWe all have our descriptors, but that list works for me.\nsparksgja\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n71 posts\n03-30-2025 at 06:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGot to agree on the PS Audio speaker shot maybe they were trying to tackle the acceptance factor.\n@jsalerno277\nI really like the addition of timbre it's maybe part of the \"You hear details in recordings you don\u2019t hear from lesser systems\" section but it could be emphasized by expanding into timbre. It helps cover\n@steakster\nresponse too about reality as that's definitely something timbre provides.\nThanks for everyone's responses, I just thought I'd share and see what others think, thanks again.\nquincy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n487 posts\n05-07-2025 at 08:34pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGreat post!\u00a0 Thanks for sharing!\u00a0 I looked over the list and concur with the authors opinion!\u00a0 Of course others have added some good comments as well!\ntoddalin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n708 posts\n05-09-2025 at 12:03am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n#11 System should exhibit \"slam\" when called for.\nThis is different than punchy bass from a sub and I saw no mention of it.\n#12 System should be able to play back undistorted at the original level, in its intended environment, whether it be in the front row at the Hollywood Bowl, at the California Jam in Ontario, or at the studio mix-down.\nIf you want to \"be there\" you need to hear it as if you were there.\nsparksgja\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n71 posts\n05-11-2025 at 12:37am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@toddalin\nThat is good input too, although I suspect the 'being there' at a rock concert slam requires the stack you show in the photo. That level of scale and dynamics needs a room and very special system set-up to achieve that particular greatness.\njafant\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n21,760 posts\n05-11-2025 at 12:57am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nsparksgja\nThank You for posting. 10 Pearls of wisdom.\nHappy Listening!\ntoddalin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n708 posts\n05-11-2025 at 02:00am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSlam is not typically something you would experience at a rock concert.\nThis tune is good for demonstrating slam if your system can do it:\nhttps://youtu.be/aLEhh_XpJ-0\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n05-11-2025 at 05:28am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@toddalin\n+1 exactly. In any venue I have ever been the bass arrival times are differentially delayed causing a wave of bass to wash over you, it is nuanced with different frequencies blended together. Never slam as is often desired and delivered by some high end system. \u00a0This is one of the very convincing aspects of my tube amp the bass is highly nuanced and is like a giant wave hitting you when a classical or rock crescendo occurs.\nquincy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n487 posts\n05-23-2025 at 05:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGreat post!\u00a0 Thanks for sharing the link to the article.\u00a0 I concur with the article!\nMore to discover\nBest quality connection from Network ...\nDoes this degrade sound?\nOn good sounding inductors\nJitter","title":"Have You Seen - 10 Characteristics of Great Audiophile Sound","url":"https://forum.audiogon.com/discussions/have-you-seen-10-characteristics-of-great-audiophile-sound"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n131860-80335\nEdit\nMusings on Switching Power Supplies (LPS for Oppo / DirecTV/  Radiance)\nSo, this whole story begins about a couple\nmonths ago when I was watching a satellite television show on my HT\nsystem.\u00a0 While I was watching, I noticed\nthat my Oppo bluray player was still on (I often turn everything on in the\nbeginning to warm stuff up and/or listen to music).\u00a0 Well, I hit the remote button to turn off the\nOppo and a weird thing happened.\u00a0 The\nsound got a little bit better.\u00a0 It lost a\nsmall bit of that digital \u201csolid-state\u201d harshness / brightness.\u00a0 I then thought, \u201cwait a minute, something is\ngoing on here\u201d.\u00a0 The next thing I did\nwas, even though my Oppo was powered off in \u201cstand-by\u201d mode, I went and just\nunplugged it completely.\u00a0 The sound\nactually got a tiny bit better after that.\nNow I have read postings that say switching power supplies can cause\nnoise in other devices when they share the same circuit/outlet.\u00a0 I never really gave it much thought, but\napparently this is definitely a thing.\u00a0 My\nOppo is plugged into the same outlet as me left surround amp, which is a\ncompletely different circuit than my HT processor and other amps.\u00a0 However, the switching power supply in my\nOppo BDP-103 was still causing havoc in the system!\nI have four dedicated 20 amp circuits for\nmy HT equipment.\u00a0 I also had two other\ndevices that still contain switching power supplies:\u00a0 DirecTV Genie satellite receiver and a\nLumagen Radiance video processor.\u00a0 My DirecTV\nwas plugged into the right surround outlet and the Radiance was plugged into\nthe same outlet as my Krell S1200 HT processor.\nSo the next step was to pull those out and connect them to regular house\noutlets (which are different circuits and not even in the same subpanel).\u00a0 I could see immediately that I lost some of\nthe video quality through HDMI.\u00a0 The\npicture was not as sharp and it introduce a little bit of noise into the image.\u00a0 However, it did improve the sound even more\n(got rid of more of that digital harshness).\nSo what to do next?\u00a0 Well, of course get rid of all these\nswitching power supplies and, somehow, implement linear power supplies!\nauxinput\n10-15-2017  9:50pm\n17 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nauxinput\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,924 posts\n10-15-2017 at 09:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFirst step was obvious.\u00a0 I had been looking at that Oppo linear power\nsupply on the OPPOMOD website for a while now, but always thought that it was\nlower down on the priority list.\u00a0 Well,\nobviously, it just rose up to priority #1, lol.\nSo, I pulled the trigger and ordered it.\nThe OPPOMOD LPS came.\u00a0 I ordered the \u201cSE\u201d version (though it looks\nlike that the non-SE version is no longer being offered for the older players,\nno big deal, the SE is better).\u00a0 I am\nquite impressed with this power supply.\nNichicon KW capacitors throughout!\nA whopping 60,000uf just for the 5V regulated output!!! (for\ndigital).\u00a0 Upgraded schottkey\ndiodes.\u00a0 It looks like the post-regulator\ncaps are WIMA MKP and the tantalum to really stabilize the voltage.\u00a0 I don\u2019t think this needs post-regulator\nelectrolytic caps because the digital board already has these as power supply\nfilters.\u00a0 This thing is HEAVY!\u00a0 The build quality is absolutely\nexcellent.\nFirst thing to go is the stock AMR fuse he\nputs in.\u00a0 I placed in a 2A Hi-Fi Tuning\nSupreme fuse I had sitting around.\u00a0 I\nfigured, it\u2019s a digital transport and silver digital cables are best, so let\u2019s\nuse silver for power supply fuse as well.\nIn addition to the LPS, I also upgraded the internal 15-pin power\nconnector between the LPS and digital board \u2013 using the 22awg upgraded cable\nfound on ebay listed as \u201cTweak OPPO BDP 93EU 103EU 103D 103US 103AU nappe\nd'alimentation optimis\u00e9e\u201d.\u00a0 I applied\ndynamat to the top of the disc drive, the top of the case/cover (where it didn\u2019t\nimpede the LPS transformer) and to sections of the bottom of the Oppo chassis.\u00a0 These things were just tweaks and wouldn\u2019t\nhurt, but the main upgrade was the LPS.\nSo, initial findings.\u00a0 The LPS does get hot!\u00a0 The LPS has a thick metal L-bracket that\nthermally connects the voltage regulators to the bottom of the Oppo chassis\n(for heat).\u00a0 I found that the bottom of\nthe case gets really hot after a few hours.\nI did notice that after a few days of burn-in, it did not get quite as\nhot.\u00a0 I think the regulators became more\nefficient during burn-in.\u00a0 I don\u2019t think\nthis heat is a big concern for the 103, as my Krell processor also warms\nup.\u00a0 The rest of the Oppo case is only\nmildly warm, so I think the case does a good job as a heatsink.\u00a0 The digital board definitely uses a lot of\ncurrent!\u00a0 It\u2019s almost like a Class A\nanalog circuit!\nSo, I did notice a good\nimprovement of video quality from the Oppo.\nIt is apparent that the stock switching power supply was introducing\nnoise into the picture.\u00a0 Images were much\nsharper and cleaner than before.\u00a0 Surprisingly,\nthe audio had a distinct jump in sound quality as well.\u00a0 Everything was more solid and, man, the bass\nwas so strong and hit hard!\u00a0 So, even\nthough it\u2019s \u201cjust a digital transport\u201d, the linear power supply matters a great\ndeal!\nauxinput\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,924 posts\n10-15-2017 at 09:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOkay, so what\u2019s next.\u00a0 There\u2019s still those switching power supplies\nin my DirecTV receiver and Radiance video processor.\u00a0 Upon investigating, I can see that the\nswitching power supply adapters clearly show voltage specifications:\nRadiance:\n12V DC, 2.5A\nDirecTV: 12V DC, 4A\nThe Radiance uses an industry standard DC\nplug (5.5mm outer diameter / 2.1mm inner diameter).\u00a0 However, the DirecTV uses a very proprietary 2-pin\nDIN connector.\u00a0 The 2-pins are off center\nat a weird angle with the DIN notch at top.\nI could not find an industry standard connector for this, so I knew I\nwas going to have to chop the DirecTV adapter.\nI just ordered another DirecTV adapter from ebay ($10 for a spare\nEPS44R0-16, you can buy these all day long on ebay).\nSo I started looking for external linear\npower supplies and came down to Teradak as a solution.\u00a0 Now, I could have gotten two separate linear\npower supplies for the DirecTV/Radiance.\nThere were a 12V 3A supply and another 12V 5A supply.\u00a0 I also saw Teradak had a dual 12V / 6.5A\npower supply.\u00a0 It would have been more\nmoney to buy the individual power supplies.\nI am also a fan of oversizing power supplies to ensure completely smooth\nDC.\u00a0 Additionally, I would only have to\nworry about one extra power cord instead of two extra power cords.\u00a0 So I decided on this unit from ebay:\nTeraDak dual 12V / 6.5A chord hugo Hifi\nDC-200W Linear Power Supply\nIt had two individual 12V / 6.5A DC\noutputs, which was perfect for me.\u00a0 The\nTerDak power supplies on ebay are often marketed for a specific piece of equipment\n(\u201cchord hugo\u201d, \u201cauralic aries\u201d, \u201cLogitech squeezebox\u201d, etc.).\u00a0 This makes it easy for those consumers\nbecause the power supply is \u201cplug-n-play\u201d with those devices because it uses\nthe proper DC voltage and DC connector.\nHowever, these are just linear power supplies and can be used in other\ntypes of equipment, as long as the DC voltage is correct and you attach/wire-in\nthe proper DC connector.\u00a0 In any event,\nthis item came with the same 5","title":"Musings on Switching Power Supplies (LPS for Oppo / DirecTV/  Radiance)","url":"https://forum.audiogon.com/discussions/musings-on-switching-power-supplies-lps-for-oppo-directv-radiance"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194422-134895\nEdit\nRudy Van Gelder on Vinyl\nI was reading about the esteemed recording engineer on Roon and came on this quote.\n\"I think it has been a tad too quiet around here lately so here it goes:\nIn a 1995 interview Mr. Van Gelder said, \"The biggest distorter is the LP itself. I've made thousands of LP masters. I used to make 17 a day, with two\nlathes\ngoing simultaneously, and I'm glad to see the LP go. As far as I'm concerned, good riddance. It was a constant battle to try to make that music sound the way it should. It was never any good. And if people don't like what they hear in digital, they should blame the engineer who did it. Blame the mastering house. Blame the mixing engineer. That's why some digital recordings sound terrible, and I'm not denying that they do, but don't blame the medium.\nbruce19\n05-11-2025 12:55am\n17 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nbigtwin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,626 posts\n05-11-2025 at 01:50am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'm sure some members will be moving Rudy's name to the Wall of Shame. \ud83e\udd23\nPost removed\nMay 11, 2025\nnoromance\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10,536 posts\n05-11-2025 at 06:38am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWe all know that Rudy played his vinyl on a Dansett.\nbigtwin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,626 posts\n05-11-2025 at 03:25pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nbillstevenson\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,319 posts\n05-11-2025 at 06:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAs a guy who still has the first vinyl record he ever bought in 1963, along with about 12,000 more, I should be insulted.\u00a0 I also have significantly more dollars invested in analog playback equipment than in excellent digital equipment.\u00a0 It is nevertheless true that digital at it's best is remarkably good.\u00a0 In the recent past I have been particularly impressed with the improvement in the sound quality of the best PCM recordings.\u00a0 In other words ordinary CDs.\u00a0 Although vinyl usually still sounds better, the difference is narrowing and there are times when CDs win.\u00a0 It seems clear that Rudy knew what he was talking about.\ndill\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,636 posts\n05-11-2025 at 07:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nRemember, that interview with Rudy was 30 years ago ...\nbigtwin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,626 posts\n05-11-2025 at 10:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nA rising tide floats all boats.\nkofibaffour\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n726 posts\n05-11-2025 at 11:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAnd not one lie told.\nbruce19\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n387 posts\n05-11-2025 at 11:45pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@billstevenson\nBill\n, I\u2019m like you in that I actually have more vinyl than anything else. However, in my case, my turntable is in need of repair and I have not bothered getting it fixed or replacing it. Vinyl was a means to an end, but in my humble opinion, a more rube Goldberg system couldn\u2019t be arranged if you were trying. I had more than enough years of trying to be extra careful about caring for my records, cleaning, not getting fingerprints on them, worrying about whether the turntable was adjusted correctly. When the other media came along, I was more than happy to say goodbye to clicks and pops and scratches. I appreciate those who say it\u2019s the ritual. That\u2019s fine. As far as the \u201csound\u201c, to me it was a high noise floor. I am more in the camp that says it\u2019s the recording and the mastering that makes the sound.\nkofibaffour\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n726 posts\n05-11-2025 at 11:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@bruce19\nI am firmly in that camp and anyone who isn't in that camp to me is either trolling or gullible (I know a bit antagonistic but honestly)\nVinyl will always be a-okay with me for the ritual of physical media listening and ownership pride but fidelity isn't something to look for in vinyl. 128kbps opus has more fidelity. 320kbps mp3 v0 has more fidelity\ntyray\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,049 posts\n05-12-2025 at 03:38am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@bruce19\n, I can\u2019t tell you how many times when I went crate digging I specifically looked for Rudy Van Gelder\u2019s work. I\u2019d say about half my album collection is from Verve, Riverside, CTI, KUDU and other\u00a0Rudy Van Gelder produced vinyl.\nIt\u2019s so interesting and funny you should mention this about the cd/album \u2019syndrome\u2019. How many times over the years have we and others been through the selling of our albums when cd\u2019s came out. Or even\nvice versa\n, some years ago too.\nNot to mention some few years ago young(er) folks started getting into albums and buying turntables! And all of a sudden the album was back!\nNow I think the reason cd\u2019s are back in vogue is because of two things.\nHigh\u00a0quality separate low priced streamers, and high\u00a0quality separate low priced cd\ntransports and dacs\n. And even though it\u2019s in digital form, those mediums can be effortlessly connected to any analog rig.\nCheck out this post I made a fews weeks ago.\ntyray\n707 posts\n04-28-2025 at 09:05pm\n@hbarrel\n, yeah I don\u2019t care about DSD cd\u2019s (SACD) either. I\u2019m just a used cd crate digger and could care less about an uber priced cd. I\u2019ve got thousands of cd\u2019s boxed up as I\u2019ve been a phono head for some years now and like so many of us did some years ago sold our cd\u2019s or albums, I did not, I held on to them.\nI\u2019m really curious to see the Laiv streamer when it comes out too.\nHere\u2019s correspondence I got from Soon from Laiv about the Laiv pinout mode intelligent auto-configuration and passed the specs on to Brad:\nDear\u00a0Tyray,\nGood Day!\nYou can use\nLaiv\u00a0mode\nfor the I2S connection with the Shanling ET3 transport. We have many customers using the Shanling ET3 transport with our Laiv Harmony DAC via I2S and getting great results.\nNice right up\n@bruce19\nceltic66\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,974 posts\n05-12-2025 at 05:26am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nRudy's work, legendary. \u00a0The world forever indebted to him for his excellence in preservation of truly great art. \u00a0His original masters will for decades be remastered.\nThe torch IMHO has been passed on to Bernie Grundman. \u00a0I can with confidence blindly pick off Rudy and Bernie mastering. \u00a0Oh, that sound.\nbillstevenson\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,319 posts\n05-12-2025 at 04:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMay I add to this discussion in the spirit of expanding it, not wanting to in any way detract from the excellent points raised so far.\u00a0 I share the enthusiasm for RVG, but want point out that he was not so good at recording piano and particularly in the early years, he was a mono guy, not a stereo guy.\u00a0 The guy who figured out that stuff and who was better than he was Roy DuNann of Contemporary Records.\u00a0 It is a historical fact that it was Roy DuNann who figured out how to properly use the new stereo format to place the musicians across the stage in belie","title":"Rudy Van Gelder on Vinyl","url":"https://forum.audiogon.com/discussions/rudy-van-gelder-on-vinyl"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194478-145141\nEdit\nEMI from Roku Ultra?\nMany moons ago when I had DirecTV satellite television, I had two of their satellite TV receivers sitting on my stereo rack.\u00a0 At that time, whenever I'd crank up the gain pretty high on my amp when spinning vinyl, I'd hear a tiny bit of feedback over my speakers.\u00a0 At first, I thought this might have been EMI because the TT was too close to the amp's current supply.\u00a0 So, I moved those components on the rack as far away from each other as possible.\u00a0 The feedback phenomenon continued, regardless.\u00a0 The next suspect became the DirecTV satellite receivers.\u00a0 So, again, I moved those as far away from the TT and amp on the rack as possible.\u00a0 When I eventually got rid of DirecTV (and their receivers), thankfully, this feedback issue completely disappeared.\u00a0 So, I'm assuming the DirecTV satellite receivers were the culprits.\u00a0 Now, I'm thinking of getting a Roku Ultra streaming device to hook up to my TV.\u00a0 I can't imagine this would pose a similar problem.\u00a0 However, I thought I'd shoot this out there to the audiophile community to see if any of you might have possibly experienced any problems in this regard when adding a Roku device.\noldaudiophile\n05-17-2025  6:43pm\n1 response\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ngkelly\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,124 posts\n05-17-2025 at 06:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe Roku is a WiFi or Ethernet internet connection. Being a low voltage device doubt you will have any problems. Good luck \ud83c\udf40 in your viewing journey.\nMore to discover\nWhat mixes with Transparent Ultra Xl ...\nSpectral MH750 Ultralinear ll  or  MIT\nReview: Ultra Fi DAC-41 DA converter\nPreamp dillema for McCormack Ultra Pl...\nMapletree Ultra 4A SE - mods\nAyon Audio S-10IIxs\nVandersteen Model 2c ii signature\nAntipodes Audio K40\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"EMI from Roku Ultra?","url":"https://forum.audiogon.com/discussions/emi-from-roku-ultra"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194461-178702\nEdit\nTo Battery Or Not To Battery (12 Volt)\nhttps://www.youtube.com/watch?v=4sEvxjdLW-o\nJay's Audio Lab interviews Danny from GR Research about Danny's 12 volt battery power setup. I am not going to pay for a $17,000.00 Stromtank, but the discussed battery arrangement looks more doable though I would prefer it in kit form which Danny just might want to do though the liability costs might be prohibitive.\nbolong\n05-15-2025  8:28pm\n8 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nglennewdick\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,011 posts\n05-15-2025 at 08:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI've hear another option is one of the battery back up systems like from golezero etc.\u00a0 as long as the requtifier is noise free it should be a stable power source. Add solar charging to it and your off grid for your audio system. Some youtubers say its an upgrade over standard AC from the power co.\nkofibaffour\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n726 posts\n05-15-2025 at 08:57pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSigh\nbolong\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n966 posts\n05-16-2025 at 12:59am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'll raise you a harrumph.\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n05-16-2025 at 01:10am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI don't think I want that mess in my audio room. My streamer (Aurender W20SE) runs on a battery and looks good. I have heard preamps that operate on batteries, very low noise floor.\nbolong\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n966 posts\n05-16-2025 at 11:35am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAs a woodworker I could dress that up in a vented cherry wood box, but the off-gassing of the batteries inside a home might be a problem. Of course, one could place the whole assembly outside and wire it into the house. Then the problem becomes very cold weather and that effect on the batteries. Probably battery heaters would be required.\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,218 posts\n05-16-2025 at 04:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBack in the day I had N.E.W. (Nirvana Electronic Werkes) class a SS amp that ran off 4 wheelchair 12V batteries. My Merlin VSM BAM runs off four 9V batteries. I've tried various battery packs/inverters to run some source equipment. There is a certain level of the black background/noise floors thing even conditioned AC can't compete with.\nporchlight1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n107 posts\n05-16-2025 at 06:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI do location recording of orchestras, bands, choirs, etc. and don\u2019t want to be running long cables across the floor of a church or auditorium. \u00a0Trip hazard!! \u00a0So a Tascam SD-20M was a solution. \u00a0Much better than those hand-held portable recorders. It was designed to use a 12 VDC wall wart, but what was amazing is when I substituted a 12 VDC battery pack made up from 8 D cell batteries. \u00a0Not only could I dispense with the long AC extension cord, but the increase in sound quality in my recordings was remarkable. \u00a0Lower noise floor (I always recorded at 24/88.2) and much smoother tone from massed strings and voices. \u00a0And I could park the recorder right under my Blumlein microphone set up! \u00a0 The only disadvantage was that the recorder drew about 350mA so the battery pack was good for only about 3-4 hours using 48 V phantom power for the mikes. Enough for anything but Wagnerian operas \ud83d\ude06.\nrichardbrand\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,544 posts\n05-16-2025 at 10:57pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI run a domestic 240-Volt audio-visual system off-grid in my motorhome, from 12 Volt battery power.\nTwo 100 Amp-hour lithium batteries are recharged from solar, the alternator or mains, if connected.\u00a0 I use a 2000-Watt pure sinewave inverter and power a Marantz AV receiver, Sony universal disc transport and KEF powered subwoofer.\nSome basic physics implies that very heavy currents are drawn when the inverter is running close to full power.\u00a0 A couple of hundred amps is normal.\nAll lithium batteries must include internal overload protection, and often these circuits have very limited current capacity.\u00a0 In this application, the most important specification is the maximum current that can be supplied by each battery through its protection circuitry.\nThe energy stored in each battery is quite small, about 1 kilo-Watt Hour - enough to run a hair drier for half an hour.\nThere is some irony that a very pure power supply has to be converted to AC and then back to DC in each audio component.\nMore to discover\nNew Rowland Criterion 2-chassis batte...\nVandersteen 5a battery biased crossovers\nGoing Battery Powered\nAudioquest Battery Pack comparation\nBackup battery UPS for my system...\nAntipodes Audio K40\nVandersteen Model 2c ii signature\nAurender N10\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"To Battery Or Not To Battery (12 Volt)","url":"https://forum.audiogon.com/discussions/to-battery-or-not-to-battery-12-volt"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194341-90040\nEdit\nTom Martin's Listening Room\nhttps://audioxpress.com/news/redi-acoustics-designs-high-end-listening-room-for-hifi-reviewer-tom-martin\ntcutter\n05-04-2025 10:20pm\n13 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nroxy54\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,245 posts\n05-05-2025 at 12:58am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAnd how much did all of that cost?\nkofibaffour\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n726 posts\n05-05-2025 at 04:50am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhy does this read like an ad?\nI'm all for room treatment and all that but let us not treat it like y'all have done to other aspects of audio. It is not magic ffs. It is a literal science with established rules and laws that cannot be flouted\ntcutter\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n451 posts\n05-05-2025 at 12:02pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@roxy54\nThey have a price list. Neither their services nor their products are cheap, but not out of line with Vicoustics and others, although GIK and Acoustic Fields provide a free assessment. \u00a0 I\u00a0use REW but that is not nearly as user friendly as writing a check. Not as much bragging rights either. I would not be surprised if Martin got a discount for his job, likely as did Darko with Vicoustics.\n@kofibaffour\nThere is science in terms of first reflections, not placing a QRD too close to the listening position (which it appears they did), diffusion on front and rear walls, and avoiding over-absorption. Perhaps they are able to place a panel within millimeters of its optimal position and that makes them better, but I believe close is plenty good enough for room treatment considering all of the myriad factors that one cannot address. Close will still sound remarkable.\nhilde45\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,101 posts\n05-06-2025 at 11:20am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI was surprised to see the components between the speakers. Usually, they're down the side to help optimize imaging and minimize vibration.\ntcutter\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n451 posts\n05-07-2025 at 03:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAppears he has a PSI audio AVAA C214 active bass trap in the left front corner. Dude is serious.\nhbarrel\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n554 posts\n05-09-2025 at 01:07am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nReflective surfaces sure are minimized. 75% of the ceiling has acoustic panels?\ntcutter\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n451 posts\n05-09-2025 at 11:42am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThey aren't minimized, they are virtually eliminated. Most intriguing is that RPG does not have any diffusion panels covered with fabric so this appears to be pure absorption. Not the way you usually do a room, so I have to assume something was done custom for aesthetics.\nbassbuyer\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n947 posts\n05-10-2025 at 10:26am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBeautiful room and equipment setup. \u00a0I\u2019d move that lounger to right in the middle for listening. \u00a0I Don\u2019t want to sit on the side. \u00a0My recliner is in the middle and it sounds great. \u00a0I have seats on the side if someone else wants to join in and listen too.\nrbstehno\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,653 posts\n05-10-2025 at 10:53am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThis is a minor room treatment, most serious audiophiles have this setup or more. I\u2019ve had this kind of setup for 20 years, but I\u2019ve had friends with setups from Rives where they have many floating panel on the ceiling, their rooms had no 90 degree corners, their rooms were wider as they went back from the front walls, reflection devices in front of each speaker, and more. The room is the most important piece of the puzzle\nronboco\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,135 posts\n05-10-2025 at 11:45am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@rbstehno\nThe room doesn\u2019t look over damped to me either. Just well controlled\ntcutter\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n451 posts\n05-10-2025 at 12:57pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe issue is not the way the room looks nor how many panels are up, but rather whether there is an appropriate mix of absorption and diffusion. Because there's no evidence of a diffusion device, I'm assuming they have them and just covered them with fabric so it was more uniform aesthetically.\nI would not call this a \"minor\" setup.\nrbstehno\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,653 posts\n05-10-2025 at 01:46pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMinor might not be the right word, maybe 'appropriate' is the better word to use. Like I said, I have friends that have rooms that do make Tom's room look like a minor setup. For example, I have friends that hired Rive's to build out their room, the floating cloud panels, the walls that fan out like an amphitheater. remember the hundreds of dots you put on the walls and floors, the cup and saucer pieces, where each 1 was made out of a different mineral, the big half round diffusor in the middle front wall, the argent diffusers, now the wood spindle diffusors in front of the speakers, back of the speakers,,super bass traps, on and on. Tom's room looks clean but I don't see any diffusors either.\nunreceivedogma\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,172 posts\n05-11-2025 at 12:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWell, this all looks very expensive.\nAs some of you know, I took an alternative and far less expensive route. For the rest:\nMy wife and I bought an 1865 4.5 story brick townhouse in Newburgh, NY. It had been abandoned for 21 years and was extremely distressed.\nWe restored it and did so to near passive house standards.\nMy architect - who I was friends with from my Cooper Union days - got his Masters in construction management at Harvard and while there he became friends with an acoustic engineer and scientist who now holds a number of patents. When my architect told him about our restoration project and the dedication of the 390 sq ft attic room to my audio system, he advised us to not cover with drywall the 6\u201d of rockwool in the walls, nor the 14\u201d in the attic, to simply cover it with fire resistant burlap. So we did.\nAnd the sound was superb. I added Moroccan rugs on the floor, and then pictures on the walls (of blown up album covers of course) as needed to brighten up the otherwise very dead, semi-anechoic room.\nCost? $0.00, because I was already insulating the room for thermal reasons anyway.\nI would post a picture but I STILL haven\u2019t figured out how to upload a photo on audiogon.\nMore to discover\n2x Stereo Power Amps 4 MartinLogan Mo...\nMartin Logan Clarity and Manley Sting...\nMeridian DSP 5200se vs Martin Logan 1...\nNew Martin Logan 40XW Line Array Loud...\nHissing Martin Logan SL3's\nAntipodes Audio K40\nVolumio Primo Plus\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand","title":"Tom Martin&#39;s Listening Room","url":"https://forum.audiogon.com/discussions/tom-martin-s-listening-room"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194378-140688\nEdit\nHow do I use an equalizer with a Hegel H390 using Spotify wirelessly?\nI use my laptop to stream Spotify wirelessly to the Hegel and the Spotify equalizer does not work for some reason and I'd like to use an equalizer.\u00a0 The Windows equalizer software works with my USB output for headphones but not wirelessly. I also thought of getting a Schiit Loki but it would have to have wireless capability. Any suggestions on how to use an equalizer in my system would be appreciated!\nimabucfan\n05-07-2025 11:33pm\n11 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\naudiotroy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,001 posts\n05-08-2025 at 12:42am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nuse roon\u00a0 it has a built in parametric equalizer no Spotify instead it had tidal and quobuzz\ngkelly\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,124 posts\n05-08-2025 at 01:55am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWill anybody argue with me that a Wiim mini\nhttps://www.wiimhome.com/wiimmini/overview\nor pro\nhttps://www.wiimhome.com/wiimpro/overview\nwill not sound better than a laptop?\nboth have equalizers functions within the app.\nkofibaffour\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n726 posts\n05-08-2025 at 02:16am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@imabucfan\nyou need Wiim Ultra or if you want a more comprehensive DSP, get a MiniDSP SHD which has Spotify Connect too via Volumio -\nminiDSP SHD with Dirac Live\u00ae room correction\njeffbij\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n273 posts\n05-08-2025 at 07:25am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n+1\u00a0 with\n@gkelly\n, although I would skip the Wiim Mini and get either the WiiM Pro or ProPlus.\u00a0 Both can use the parametric equalizer built into the app.\u00a0 It will sound worlds better than using a laptop or PC.\u00a0 And who knows, it might be so much better that you don't need to use equalization.\nQuestion.\u00a0 I'm assuming that you have a network cable (and therefore and Internet connection) going to the Hegel, correct?\u00a0 If so, you could also go the Roon route, as\n@audiotroy\nsuggested, and upgrade the streaming service to either Tidal or Qobuz.\u00a0 Then you can stream directly to the Hegel, which is Roon Ready.\u00a0 Both are going to give you a better quality source stream than Spotify.\u00a0 And it is more worthy considering the level of the Hegel.\n[Spotify is still limited to 128kbs for the free version and 320kbs for the paid premium version.\u00a0 320kbs is not even CD quality, you have to go over 4X to 1411kbs for that.]\n...Just my 5 cents (including tariffs)...\n-Jeff\ngkelly\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,124 posts\n05-08-2025 at 05:06pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI am at my sister\u2018s walking her dogs, and even the WIIM mini now has room correction. I remember a couple of months ago when it came out that I tried it and it wasn\u2019t available then but apparently it\u2019s available now so this is another plus.\ngkelly\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,124 posts\n05-09-2025 at 12:29am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOK, I asked my sister when she got home to let me know what she thought.\nHere is her response\nThis definitely sounds better, not so boxy if that makes sense.\nI\u2019m a firm believer that when a female can hear the difference there is a difference.\nsaugertiesbob\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n49 posts\n05-09-2025 at 09:37am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhy won't the spotify EQ work? Are you sure you have it toggled on ? It works wirelessly for me via my phone for instance?\nIf you have a bluesound set up you can use spotify via that device and bluesound has its own eq function too.\nimabucfan\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n56 posts\n05-09-2025 at 09:14pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n*saugertiesbob The Spotify EQ does work it just doesn\u2019t work with the wifi-ethernet-H390 setup and I don\u2019t know why. It will work with usb out to my headphone amp.\nDon\u2019t get me wrong, I need very little adjustment to the Hegel, it\u2019s nothing short of a phenominal piece of gear but I think everyone likes to hear more or less bass or trble in their music.\n*jeffbij Yes, I use my laptop to stream Spotify to my modem device plugged into an outlet which has ethernet to the H390. It wakes the H390 up and begins playing the streaming Spotify. I assume the EQ only effects music using the USB output.\nThanks for the help guys, I\u2019ll try Wiim Pro out or Pro Plus! (assuming they have an equalizer function)\njeffbij\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n273 posts\n05-09-2025 at 09:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@imabucfan\nThe WiiM should work since:\nThe EQ is done internally on the WiiM hardware, and\nit will be directly connected to the Hegel, either by USB or Coax (you can use the RCA analog output of the WiiM, but I think you will find the Hegel's DAC to be better.)\nimabucfan\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n56 posts\n05-09-2025 at 09:26pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks Jeff. How would I bypass the DAC in the Wiim to use only the H390 dac?\njeffbij\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n273 posts\n05-10-2025 at 03:42am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe WiiM Pro and ProPlus models have both an Optical and digital Coax output. Use the Coax output into the Hegel's coaxial connection.\u00a0 When you go through the initial setup of the WiiM, if I remember correctly, it will ask you to pick the output you want to use.\u00a0 If you don't already have a digital coax cable, you will need to purchase one.\u00a0 You can buy a very cheap no name one on Amazon just to get you up and going, and then, after doing some research, etc. pick a better one from a respectable manufacturer.\u00a0 (And there are a lot of those ranging from $75 into the stratosphere.)\nIf you want to use USB instead, you would need to go to the WiiM Ultra.\u00a0 But that isn't necessary for what you need.\u00a0 And the Ultra is double the price.\n-Jeff\nMore to discover\nHome stereo equalizer\nbose 901 active equalizer\nAccuphase DG-38 Digital Equalizer\nTest gear for room nodes - parametric...\nDo Your Speakers have LEVEL CONTROLS ...\nRSX MUSIC SERVER RSX MUSIC SERVER\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"How do I use an equalizer with a Hegel H390 using Spotify wirelessly?","url":"https://forum.audiogon.com/discussions/how-do-i-use-an-equalizer-with-a-hegel-h390-using-spotify-wirelessly"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194389-198816\nEdit\nPower supply questions. How to know when it needs repair?\nI have 3 separate power supply units in my system. They are all getting old. How do I know when they need recapping or whatever they may need? How can I test them? They all use umbilicals to hook to turntable, preamp and phono preamp. What might I hear that would be an indicator? Thanks,\nBill\nbillpete\n05-08-2025  4:07pm\n1 response\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\narnieco\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n21 posts\n05-08-2025 at 05:57pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nfor the pre amp and phono amp, you will notice a sharp drop in gain, or perhaps a drop in audio quality. it would be significant. A turntable, the motor will slow down under load.\nIf I were to test them, I would put a VOM meter on the output and measure DC voltage, just to confirm. I'd also measure AC voltage. All under load. It's the simplest test i can think of.\nThere are others were you can measure resistance, and watch it reduce as it charges. But\u00a0 the time it takes to do that will vary depending on the VOM meter.\nMore to discover\nNeed power amp suggestions for ProAc ...\nFlexible Power Cords\nCLASS A POWER RATINGS\nLuxman 507Z Stock Power Cord\nMating power cords with APL 3910\nRSX MUSIC SERVER RSX MUSIC SERVER\nAyon Audio S-10IIxs\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Power supply questions. How to know when it needs repair?","url":"https://forum.audiogon.com/discussions/power-supply-questions-how-to-know-when-it-needs-repair"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194364-11040\nEdit\nSonore sonic orbiter 2.9 SD card installation\nIssue resolved...\nmooncrikit\n05-06-2025  4:59pm\n0 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nMore to discover\nSubs - Installation\nquestion about installation of 20 amp...\nInfra-Red Sensors for Installations?\nOracle Delphi Mark V Belt Installation\nVPI Super Platter Installation\nVolumio Primo Plus\nAyon Audio S-10IIxs\nAurender N10\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Sonore sonic orbiter 2.9 SD card installation","url":"https://forum.audiogon.com/discussions/sonore-sonic-orbiter-2-9-sd-card-installation"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194239-203103\nEdit\nDoes a 2-way active crossover make sense when using a REL sub connected to the amp?\nRecently at Axpona a couple of the systems that sounded the best to me had active crossovers.\u00a0I have a Modwright KWA-150 SE power amp, Dynaudio Special 40s speakers and a REL T7/X sub in my system and I was wondering if there'd be any benefit to introducing an active crossover, especially since the REL sub is feed directly from the speakers connectors.\nI looked at the Sublime crossovers but they are 3-way designs. The Marchand Electronics XM66 looks very interesting, but I wanted to know first if any of you has had experience using active crossover with REL subs and/or used ME products.\nsenna27\n04-25-2025 10:25pm\n4 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nhelomech\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,042 posts\n04-25-2025 at 11:25pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI used to have the Marchand XM66 and used it with Rythmik L12 subwoofers. Ultimately I preferred the sound of my system without the crossover unit because, unfortunately, the Marchand was not completely transparent.\nI think whether an active sub crossover is a benefit depends on the quality of your system, such as whether the main speakers can handle the lowest octaves without strain and the transparency of your signal chain.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n04-27-2025 at 03:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSorry for replying so late, my real job kept me busy.\nSo, yes, having an active high pass filter is a very good thing.\u00a0 About 3 out of 4 a\u2019goners who apply a high pass filter _and_ raise the crossover point to ~ 80 to 100 Hz report greatly improved imaging and clarity.\nThe mistake I see many audiophiles make is they go by speaker spec and how much they spent on their main speakers.\u00a0 \"I bought these enormous floor standers and paid $7,000 for them so I want to get every single Hz out of them that i can\"\u00a0 goes the thought.\u00a0 They then throw a subwoofer into the mix, and set the low pass filter ~ 40 Hz and achieve extremely mediocre results.\nUsing a high pass filter (i.e. crossover) lets you minimize distortion, excursion and power sent to your main speakers which often achieves exceptional improvements in clarity especially with 2-way speakers.\u00a0 The physics is relatively simple.\u00a0 If you add a sub the main amplifier and speakers still get 100% of the frequency range of the music.\u00a0 A high pass filter reduces that so that the bass, which is where most of the cone movement and amplifier power is spent, is greatly reduced before your amplifier sees it.\nAlso consider potentially sealing the ports on the back.\u00a0 This may make it easier to integrate with the subwoofer and reduce distortion.\u00a0 A clean tight sock stuffed in the back will do, won\u2019t harm anything\u00a0 and is immediately reversible.\nTwo other tips.\u00a0 Use the AM Acoustics room mode simulator to help you place all of your speakers and your listening location.\u00a0 Use your own measurements instead of speaker specs or dial settings.\u00a0 Absolutely nothing about a speaker\u2019s -3 dB point in the low end matters once it\u2019s in a room.\nozzy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n7,835 posts\n04-27-2025 at 07:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have several JL Fathom F-113 subs and for a while I was using the JL Audio Crossover. Though the crossover's worked well I thought I was losing some transparency in the main speakers.\nToday, I just play the main speaker's full range and augment the bass at about 40hz. which seems to blend in with the mains better.\nozzy\nsenna27\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2 posts\n04-28-2025 at 01:12pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThank you all for your comments. It sounds like I might need to play with sub placement some more as well as make some control adjustments.\nMore to discover\nAudio Server Newbie...Does This Make ...\nDoes a Sub for Wilson Sophia II make ...\nAudiophile book of \"Common Sense\"\nWhich makes more sense? - CD player v...\nHas anyone used the new Innuos 2.0 Se...\nAntipodes Audio K40\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10IIxs\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Does a 2-way active crossover make sense when using a REL sub connected to the amp?","url":"https://forum.audiogon.com/discussions/does-a-2-way-active-crossover-make-sense-when-using-a-rel-sub-connected"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194215-140513\nEdit\nSound Pressure Meter for Android\nHi all:\nI need an accurate, simple SPM that I can use on my Android phone.\nThe application is 2-channel stereo in a living room, so NOT extremely loud...\nAny suggestions?\nThanks in advance,\ninagroove\n04-24-2025  6:50pm\n6 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nkofibaffour\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n726 posts\n04-24-2025 at 07:49pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@inagroove\nTest these two:\nSound Meter -\nhttps://play.google.com/store/apps/details?id=com.ktwapps.soundmeter\nDecibel X -\nhttps://play.google.com/store/apps/details?id=com.skypaw.decibel\ninagroove\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n302 posts\n04-24-2025 at 09:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nkofibaffour - Thanks!\naudio_guy_uofw\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n79 posts\n04-25-2025 at 03:04am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI use Dexibel X pro, and like it. But note that with Android, unlike Apple products, different manufacturers have different microphone sensitivities. So this means that the sound level meter apps need to be calibrated to be accurate. I do this with an inexpensive sound level meter...but maybe you should just get a sound level meter. The .\u00a0BAFX Products SPL Meter gets good reviews for accuracy for a lower cost unit. Or consider a Dayton Audio IMM-6 calibrated mic to plug into your phone for use with a SLM app. Good luck!\nbaylinor\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,671 posts\n04-25-2025 at 12:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIMPORTANT if you lay your phone down to get db readings:\nThe microphone is located on the low edge of the android phone, therefore you must aim the low edge of the phone towards the speakers to get reliable db readings. I used to have the top edge of the cellphone facing the speakers and the readings were way off.\ninagroove\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n302 posts\n04-25-2025 at 01:34pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks to all:\n@audio_guy_uofw\nYes, I agree that a inexpensive sound level meter may be an option.\u00a0 Thanks for the lead on BAFX Products.\n@baylinor\n- Good point. I can imagine the frustration this mistake has cause more than a few...\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n04-25-2025 at 01:47pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHighly recommend this\nUSB C microphone from Dayton.\nYou can download the calibration file from their site and then use it with Audio Tools.\nIf you are lucky enough to still have a headphone jack you can use\nthe slightly less expensive version here\nMore to discover\nSeismometer on iPhone\nPass X250vsX350:same size meter?\nMedium-priced balanced interconnects ...\nFozgometer?\nmeter lights\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nAyon Audio S-10IIxs\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Sound Pressure Meter for Android","url":"https://forum.audiogon.com/discussions/sound-pressure-meter-for-android"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n166749-120185\nEdit\nNAD C-388 w/BluOS2i WiFi Connectivity\nI have a NAD C-388 w/BluOS2i (and HDM-2) MDC cards. It has worked very well for several years.\nLater, I purchased a Node2i. They are both in my 2-ch music listening/concert watching system. Typically use PC, tablet, or Note phone to control the C-388 using BluOS app to stream AmazonPrimeMusicHD.\nBetween C-388 and Node2i, I prefer to use the C-388 because it is more direct connection, since the Node2i is connected to Coax1 input of the C-388. However, the C-388 seems to drop the WiFi connection after 5-10 minutes of play. My solution has been to switch to the Node2i - which has always been rock-solid connection.\nInvestigating this issue, I've found that the Node2i is always connected on 5GHz (never fails), while the C-388 is always connected on 2.5GHz. Home network is all Asus mesh, with AC3100 (master) and three AC1900 (nodes) spread throughout the house and to cover an acre of property (for IEM noise-blocking + tunes while mowing).\nQuestion is about the C-388 WiFi being 'stuck' in 2.5GHz. Seems I need to move it to the more robust 5GHz.\nAnyone know if this is possible and how to do that? Is it a C-388 setting or BluOS2i setting?\nmwatsme\n05-14-2021  2:11am\n19 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nfuzztone\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,651 posts\n05-14-2021 at 04:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSounds like a firmware issue.\nHave you reached out to Lenbrook?\nmwatsme\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n188 posts\n05-15-2021 at 03:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@fuzztone\u00a0Good call! Firmware was not up-to-date. Seems NAD has been very busy lately. Here are the latest versions (as of 5/15/21)...\nC-388:\nMain= v1.74\n(model-specific, NEW)\nVFD= v1.22\n(model-specific, not new)\nBT= v1.26\n(model-specific, not new)\nBluOS2i: v3.14.10 (updates automatically, not new)\nHDM-2: v1.19 (model-specific, not new)\nApparently, I'll need to work on this a bit.\nmwatsme\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n188 posts\n05-15-2021 at 05:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDidn\u2019t help, but accessing the back of the unit (manual firmware update), was reminded of the WiFi dongle method used for the BluOS2i. Previously, I had dug-out the extension cord that came with the BluOS2i MDC card to improve WiFi reception.\nSo I was thinking maybe the dongle could be upgraded.\nDoes anyone know if a standard WiFi dongle can be used?\nThe USB-WiFi dongle that came with BluOS2i is a Unex DNUA-93F.\nhttps://www.unex.com.tw/products/wi-fi/usb-wifi/802-11n/80211n-usb/detail/dnua-93f\nAn 802.11 b/g/n, and as I suspected 2.4GHz only.\nI\u2019ve ordered a TP-Link Archer T3U Plus and see if it works with BluOS2i MDC card (AmazonPrime Free-Returns if it doesn\u2019t).\nmwatsme\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n188 posts\n05-19-2021 at 01:49am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAs the TP-Link Archer T3U arrived, I was investigating how the NAD C388 was connecting to the Asus mesh router system, again this is made-up of AC3100 (master) and three AC1900 (nodes) spread throughout the house.\nWhat I found while digging into the \u2019weeds\u2019 of QOS and which device is connected to which mesh node, and watching the traffic analyzer for activity on the C388, which I had just fired-up using BluOS (from my laptop)... C388 began playing like it always does - then abruptly lost connection. Just before that happened, C388 was showing full 2.4GHz signal strength connected to a mesh node just a floor below (although it is a concrete slab and on the other side of a Bedford stone wall).\nJust then, the notorious yellow exclamation point showed-up in the Asus control screen. I know what this means... there is a router firmware update available. Asus releases frequent updates, and I\u2019ve had this issue before (several times), when there is a router update \u2019pending\u2019, the C388 gets glitchy. So approved the Asus router update, which took all of 5 minutes, and now everything is good!\nSomething about pending router updates the C388 doesn\u2019t like. I had also locked the C388 to the garage mesh node (via Asus router control), that can be good (if you don\u2019t want it floating around amongst mesh nodes) and it could be bad (if the node it\u2019s locked to goes down or gets over-used by other devices). Removed the lock on that, let it roam if it wants. Also enabled automatic scheduled updates on the Asus mesh - see if that helps avoid these issues in the future.\nSo, ultimately the answer was check if there are pending updates for the wireless router and approve them.\nmwatsme\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n188 posts\n05-20-2021 at 01:54am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBTW, replacing the supplied\u00a0Unex DNUA-93F (WiFi dongle that comes with BluOS2i MDC card) with\nTP-Link Archer T3U Plus does not work.\nI think it has to do with a feature of the\u00a0Unex DNUA-93F called \"Off-load capability\".\nHas anyone successfully replaced the WiFi dongle that comes with NAD BluOS2i MDC card?\ncnoyes72\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1 posts\n06-18-2021 at 04:29pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI had issues with the bluos2i module dropping off the network at random intervals (sometimes even while streaming).\u00a0 That wifi dongle that comes with the MDC module is complete garbage.\u00a0 I ended up using a wifi ethernet bridge and using the wired ethernet port on the MDC module.\u00a0 Has been stable ever since.\nparkzhi\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2 posts\n08-06-2021 at 09:53am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHi, actually I have same issue now, since I recently bought NAD C388 with MDC Bluos 2i but unfortunately the usb wifi adapter was broken now and I was trying to see if I can replace with a new one. I read through your conversation and did some investigation as well. I noticed the original usb wifi is drive support with win7 and\u00a0Linux (ath9k_htc), would that be possible that usb wifi adapter is like free drive and linux supported. Since I would guess Bluos is based on Linux. I also bought a TP link usb wifi adapter but that needs me to install driver, so I can not use TP link ones at all.\nmwatsme\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n188 posts\n08-06-2021 at 11:21am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@parkzhi\nSeems there are three options, listed best -> worst result:\nRun Ethernet cable to the unit\nUse a wifi bridge for improved wifi\nCall NAD/Lenbrook and order a replacement wifi dongle. NAD support is good when you use their website to open a ticket.\nmwatsme\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n188 posts\n08-06-2021 at 11:30am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have moved on to NAD M12, which uses the exact same dongle, and am still using that for wifi connection. Having both C388 and M12 (without built-in amp), I can say that any improvement of sound quality from the 'upgrade' is marginal.\nI didn't need the amp section of C388 and wanted the M12 for its features - specifically the digital coax output and XLR in/out - M12 also has bigger, nicer, touch screen.\nparkzhi\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2 posts","title":"NAD C-388 w/BluOS2i WiFi Connectivity","url":"https://forum.audiogon.com/discussions/nad-c-388-w-bluos2i-wifi-connectivity"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194187-116499\nEdit\nwoofer replacement question (not sure if right forum, but...)\nI have my eye on a pair of old Kan MK2 (I know, I know, spare the hate\n) that have been refurbished via Falcon B110. My hesitation is that Falcon replicates the original SP1003 B110, and my understanding is the MK2 used the later SP1057 model, which would interact differently with MK2 crossover, altering the sound. Can anyone advise on this who has any experience with such matters?\nsifter\n04-22-2025  6:21pm\n3 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nkofibaffour\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n726 posts\n04-22-2025 at 07:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAsk on\nhttps://www.diyaudio.com/\n@sifter\nyogiboy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,232 posts\n04-22-2025 at 08:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGive Jerry Bloomfield at Falcon Acoustics a call. I\u2019m sure he will give you the information that you are lookin\u2019 for!\nFalcon Acoustics | The Leading DIY Speaker Parts and Kit Supplier since 1972\nsifter\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n100 posts\n04-22-2025 at 08:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThank you very much. I fired off an email to Jerry, in the meantime I\"ll try DIY as well. You guys are great, thx.\nMore to discover\ntt caused am right channel fuse to blow\nNeed cable to soften brightness just ...\nPass Labs XA30.5 and ModWright KWA150\nQuality 15 Amp Right Angled Plug\nAre Harbeth Super HL5 XD right for me?\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAntipodes Audio K40\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"woofer replacement question (not sure if right forum, but...)","url":"https://forum.audiogon.com/discussions/woofer-replacement-question-not-sure-if-right-forum-but"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194126-181583\nEdit\nHelp - static noise in speakers\nI hear static in one speaker.\u00a0\u00a0I switched the speaker wires and the static changed speakers, so I guess its coming from the amp or from the speaker wire.\u00a0 Its not loud but its noticable.\u00a0 I have a Mcintosh 352 integrated tube amp and Audioquest Red River cables.\u00a0 It happensd regardless of the input, so its not the table or the streamer.\nDoes anyone have any ideas beyond taking the amp in for service?\nThanks\nmojo771\n04-18-2025  7:37pm\n18 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nyogiboy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,232 posts\n04-18-2025 at 08:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSwap the left and right tubes and see if the static moves to the other speaker! If it does you have a bad tube!\njea48\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,944 posts\n04-18-2025 at 09:40pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCould just be dirty signal tube pin to tube socket connections. Pull and reinsert signal tube(s) in tube socket a few times. The friction should clean the connections.\nmojo771\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n113 posts\n04-19-2025 at 12:35am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nyogiboy and jea48, thanks.\u00a0 I really thought those ideas would work, but they didn't.\u00a0 I can try again to clean them, but the static stayed on the right speaker.\nI'm still waiting for McIntosh and Audio Advice to respond to my support requests.\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n04-19-2025 at 01:35am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSorry to hear. You also switched both cables (both ends)... I assume. It's not likely to be the cable. But worth verifying\nmojo771\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n113 posts\n04-19-2025 at 02:35pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSo now, I've removed and reinstalled the tubes several times with no improvement.\u00a0 All the tubes are lit up green.\nI also tried a different speaker cable with no improvement.\nI hate to buy all new tubes, but it seems that the problem is in the McIntosh amp\njea48\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,944 posts\n04-19-2025 at 03:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nyogiboy said:\n04-18-2025 at 03:51pm\nSwap the left and right tubes and see if the static moves to the other speaker! If it does you have a bad tube!\nDid you try swapping the left and right channel tubes?\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,218 posts\n04-19-2025 at 07:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'd not continue to use the amp, continuing static after swapping everything means this internal issue. You may end up in catastrophic failure if situation left unresolved, I know this from direct experience.\nmojo771\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n113 posts\n04-20-2025 at 12:08am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI did try moving the tubes to the other side, and even tried 2 new, extra tubes that I had on hand - no improvement.\nSo I guess I will wait for McIntosh to respond (even thought it took them weeks to respond the last time I had an issue)\njea48\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,944 posts\n04-20-2025 at 03:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe static noise could be caused by a cold solder joint/connection. Or possibly a poor internal wiring connector connection.\nI did a quick look through the owner manual of the amp.... That amp is basically controlled by a computer.\nMay not do a thing, but did you try unplugging the amp from the wall outlet for a few minutes then plug it back into the wall outlet?\nmojo771\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n113 posts\n04-20-2025 at 05:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI tried unplugging the amp for about 5 minutes but that didn't fix it.\nI also just plugged in headphones and I don't hear the static. So does that mean it may not be the tubes, but maybe the speaker out connection?\nThanks for all the ideas everyone.\njea48\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,944 posts\n04-20-2025 at 08:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIMO, it's not the tubes. If it was the tubes, switching the tubes from one channel to the other the static would have followed the bad tube.\nI also just plugged in headphones and I don't hear the static.\nIMO, that says the preamp section is ok. That would include the tubes. The static is in the solid state amplifier section.\noddiofyl\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,644 posts\n04-21-2025 at 04:24am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI had a weird static noise coming through my speakers and discovered two things contributing to noise.\u00a0 Ethernet\u00a0 cabling near speaker wires and I also had to move e my ethernet switch away from my tube preamp.\u00a0 \u00a0Amp is tube.\nIn my last house I had a Glade Plug In air freshener causing noise.\u00a0 \u00a0Whenever it released its scent I got a crackling noise through speakers.\u00a0 Wasn't even on the same circuit.\u00a0 Unplug any stuff like that while troubleshooting\nfaustuss\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n973 posts\n04-21-2025 at 08:00am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@mojo771\n\"Audioquest Red River\" are these your speaker cables? I can't find any reference to that being a line of Audioquest speaker cable, interconnect yes.\u00a0 Its much more helpful if you accurately include the brand and model of the equipment, you're using to help you troubleshoot an issue. Otherwise, most comments are relying mostly on conjecture.\nmojo771\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n113 posts\n04-21-2025 at 01:43pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nfaustuss - you are correct.\u00a0 The Red River box was right next to the other one and they look almost identical.\u00a0 My speaker wires are AQ Rocket 44\nmojo771\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n113 posts\n04-21-2025 at 01:46pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\noddiofyl - you are correct as well.\u00a0 I had no idea, but yes - when I moved the ethernet cable farther away from the amp, the noise stopped.\nThanks to everyone who responded.\u00a0 After all the troubleshooting, it was the simplest fix - move the ethernet farther from the amp.\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,218 posts\n04-21-2025 at 02:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAny noise due to external factors would show up on both channels, my best guess of OP issue is failing cap, resistor, cold solder, either diy repair or return to manufacturer, let them diagnose, this all speculation at this point.\njea48\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,944 posts\n04-21-2025 at 05:02pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAny noise due to external factors would show up on both channels, my best guess of OP issue is failing cap, resistor, cold solder, either diy repair or return to manufacturer, let them diagnose, this all speculation at this point.\nNot really.\nI imagine the internet cable the OP moved was on the same side of the amp\u2019s\u00a0 connected speaker. Just a guess the static sound started recently when the OP moved the internet cab","title":"Help - static noise in speakers","url":"https://forum.audiogon.com/discussions/help-static-noise-in-speakers"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192105-196045\nEdit\nWhy does USB feature so much in discussions about DACs when the newer HDMI seems better?\nI am a bit confused about the frequent mention of USB in the context of stand-alone Digital to Analog Converters (DAC).\u00a0 Why is HDMI left out?\u00a0 Is this a US versus Europe / Asia thing?\nThe Universal Serial Bus (USB) was introduced in 1996 by a group of computer manufacturers primarily to support plug-and-play for peripherals like keyboards and printers.\u00a0 It has only two signal wires, plus two wires that can supply DC power.\nThe High-Definition Multimedia Interface (HDMI) was specifically designed by a group of television manufacturers for transmitting digital audio and video in many formats.\u00a0 It hit the shops around 2004.\u00a0 There are 19 pins supporting four shielded twisted pairs, and seven other wires (3 of which can instead form a shielded twisted pair for Ethernet).\nI have three universal disk players from Sony, Panasonic and Reavon, which all have two HDMI outputs, one can be dedicated to audio only, the other carries video or video plus audio.\u00a0 (Only the Panasonic does not support SACD).\u00a0 My Marantz AV 8802 pre-processor has 11 HDMI connections and only two USBs.\nOf course, both USB and HDMI continue to evolve.\u00a0 Then there is the Media-Oriented System Transport (MOST) bus designed by the automotive industry, which looks even better.\nWhy is it so?\nrichardbrand\n11-25-2024 11:02pm\n45 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nmike_in_nc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,250 posts\n11-25-2024 at 11:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMost computers have several USB ports, so one is likely to be available for digital audio output. On the other hand, not all computers have HDMI, and the ones I have seen have only one HDMI port, intended for the monitor. All that makes USB a useful input for a DAC.\nOf course, some newer DACs are adding HDMI input.\nrichardbrand\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,544 posts\n11-26-2024 at 12:27am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@mike_in_nc\nYes, that makes sense for computers.\u00a0 My partner's Dell XPS 13 has so little space for any physical connections, it has an external adapter to support HDMI and Ethernet over USB!\nWhat about separate streaming boxes.\u00a0 What would be the best connection to a DAC for them?\nDo most people stream via computers these days?\u00a0 The only streaming I use is to check the music out before buying a disk, and I use WiFi (great Australian invention) to connect my mobile to the pre-processor for that.\nmike_in_nc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,250 posts\n11-26-2024 at 12:38am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe best connection is the one supported both by the streamer and by the DAC. Some manufacturers have their own connections (like Auralic\u2019s Lightning Link) or use I2S, and many say that the sound is best if those are used. I have no experience with that.\nLeaving aside specialty links, if USB is available, I like to use that, as it supports the widest range of sampling rates. Also, over USB, the DAC controls the clock entirely, without depending on the source. I will say, though, that with the new equipment I\u2019ve tried recently, I cannot hear any difference between USB and SPDIF or AES3.\nartemus_5\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,016 posts\n11-26-2024 at 01:51am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@richardbrand\nWhy is it so?\nYou'll have to talk to the Accountants, then Marketing, Then the Lawyers who must grease the palms of the proper officials who will make sure they have\u00a0 your complete cooperation with the proper authorities who will keep your competitors off your case should one arise.\nrbstehno\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,653 posts\n11-26-2024 at 10:54am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nUSB is a terrible interface to a dac. Ethernet is better and i2s is even better. Most won\u2019t know this because they buy cheap stuff and the cheaper stuff doesn\u2019t include Ethernet or i2s. For a decade, all your high end manufacturers provided a proprietary link from their space player into their preamp or integrated or possibly a dac. They used hdmi/i2s for this. I use a streamer that doesn\u2019t even include usb out, only i2s into my dac\nbassbuyer\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n947 posts\n11-26-2024 at 11:21am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt depends on the manufacturer in my experience. I have a Holo Audio Cyan 2 DAC. \u00a0It has multiple inputs. \u00a0Holo makes a Red streamer which connects through i2S which is tailored to connect between the two units. \u00a0I didn\u2019t like the Red and the apps I needed to use. \u00a0I went with a Innuos Zen Mk3 streamer instead which only connects using USB. \u00a0It sounds excellent in my system. \u00a0Would i2S sound better- possibly if I could even tell the difference with my old guy ears. \u00a0I love the Sense app that Innuos uses, even better than the BluOs app which was my previous favorite. \u00a0I only use HDMI connections with my TVs. \u00a0So many connections and so many different cables. \u00a0 Pick what sounds good to you in your system.\nvinylshadow\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n556 posts\n11-26-2024 at 12:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGlass Toslink likely better than cables. No interferences.\ndaveteauk\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n92 posts\n11-26-2024 at 02:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@vinylshadow\n- Toslink, whether glass or some kind of plastic, is THE worst thing to use for audio connections. It's been slagged off for decades, since it was first used for audio in fact, for having terrible sound quality. Obviously opinions will vary, but it totally depends of the resolution of the system - if you have a poor/low quality system, it probably sounds OK.\nvinylshadow\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n556 posts\n11-26-2024 at 03:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@daveteauk\nI guess so....I was going off the P-Link glass optical cable that Playback Designs uses to connect their streamer to their DAC. That cannot be beat by any cable.\nemergingsoul\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,582 posts\n11-26-2024 at 08:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI would like to find an HDMI splitter, that I can use to feed audio into my dac and have the simultaneous video be fed into my av processor. I\u2019d like to be able to bypass the dac in my processor and maybe I can get it to sound better.\nAlthough, maybe it won\u2019t sound better because my processor is very good. Would love the flexibility to pursue other dac options.\nrichardbrand\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,544 posts\n11-26-2024 at 10:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@emergingsoul\nAll of my recently purchased silver disk spinners support two HDMI connections, from the very cheap Sony transport (A$250 or so) and up, I guess for exactly this reason. In my case, the lauded Texas Instruments Burr Brown DACs in my Reavon player turned out to be far worse than the eight 2-channel AKM DACs in my AV pre-processor.\nI would encourage you to read the specification sheets of any","title":"Why does USB feature so much in discussions about DACs when the newer HDMI seems better?","url":"https://forum.audiogon.com/discussions/why-does-usb-feature-so-much-in-discussions-about-dacs-when-the-newer-h"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192746-8746\nEdit\nWhy do I have to prove I am a human,  every time I refresh a page on this site ?\nIt started a few weeks ago,\u00a0 only on my Samsung tablet, every time I leave the site and return I get this annoying request to prove I am a human. It doesn't happen with my iPhone. Anyone know how to stop this.\nallanblissett\n01-12-2025  4:28am\n28 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nsls883\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,084 posts\n01-12-2025 at 08:15am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'm getting that as well on my phone.\u00a0 Started a few days ago.\u00a0 Not getting it on my computer.\nAlso seeing a 404 error code.\nI don't know how to fix it.\nevank\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n348 posts\n01-12-2025 at 10:06am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI've been getting that for over a year\ndlevi67\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n56 posts\n01-12-2025 at 11:46am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nevery time I leave the site and return\nLucky you. I get it on every page loaded, but I've only been on the forum for a couple of weeks, so I assumed it was 'normal' (if paranoid). Fortunately the CAPTCHA works without manual intervention ~90% of the time, and the other 10% it's a 'tick here if you are human' box.\nthecarpathian\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,296 posts\n01-12-2025 at 12:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSame here. I get it every time I want to do anything on here.\nsnapsc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n725 posts\n01-12-2025 at 01:36pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAs AI hacking gets better and better, you may soon have to provide a retinal scan.\ncarlsbad2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,036 posts\n01-12-2025 at 03:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI love it when I am logging in on my phone and they want to send a text to my phone to cofirm it is me.\nchazz101s\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n29 posts\n01-12-2025 at 05:12pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@Tammy, please help???\nallanblissett\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n172 posts\n01-12-2025 at 05:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt\u2019s the website that\u2019s requesting it, as after you check the box , it waits for approval \u00a0from Audiogon.\nlordrootman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n384 posts\n01-13-2025 at 12:47am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nJust to make sure you are \ud83d\ude02\ud83d\ude02\ud83e\udd23\ud83d\ude02\ud83e\udd23\ud83d\ude09\ntimlub\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,057 posts\n01-13-2025 at 03:57am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt's better than having bots answer or starting bogus threads\ncuriousjim\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,165 posts\n01-13-2025 at 04:38am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@carlsbad2\nThat just started for me yesterday.\nI love it when I am logging in on my phone and they want to send a text to my phone to confirm it is me.\nriie\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n241 posts\n01-13-2025 at 05:57am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBecause it wants to know if you are a human or a dancer.\nasvjerry\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,194 posts\n01-13-2025 at 06:20am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n\"....and just What makes you think I'm not human anyway?\"\n*Shifting position on the chair....tail getting kinked....*\nThe one minute power failure over the entire planet was finally ascribed to a surprise surge of sunspots on the opposite face of the sun, unseen from human monitoring stations.\u00a0 These stations are being checked to make the potential recurrence of this event unlikely to not be predicted in the future.\n( But that was just the 'official version' that Didn't explain why every cell phone everywhere in the regional language displayed:\nF all y'all\nor words to that effect, later blamed on a glitch....)\nIn short, don't take it personally...when asked, I usually mark 'Other'....\nasvjerry\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,194 posts\n01-13-2025 at 06:23am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n...nobody's followed up on it.....that left, anyway.... ;)\nthecarpathian\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,296 posts\n01-13-2025 at 12:48pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPlus it doesn't prove you're a human.\nIt only proves you're something capable of tapping a tiny box.\nmesonto\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n99 posts\n01-13-2025 at 01:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@thecarpathian\nThis method actually does prove that you are human. It's the way you touch the screen or use the mouse. A computer will do it in an exacting way whereas a human will not.\nLook look it up, it's actually quite interesting and quicker than captcha.\nAlbeit, it's still incredibly annoying.\nthecarpathian\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,296 posts\n01-13-2025 at 02:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@mesonto\nI mean it could be a cat, or a parrot, or an ocelot.\nMy cat can be a real jerk. Who knows what he'll say when he gets on here when I'm at work...\nmesonto\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n99 posts\n01-13-2025 at 02:35pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@thecarpathian\nokay, you got me. lol.\nwolf_garcia\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,918 posts\n01-13-2025 at 05:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nA lot of this stuff seems a little unfair to non humans. Does everybody have to be human? No they don't, but they still have this uphill battle against the so-called humans who think they're so superior. I'm fed up with the whole thing.\nthecarpathian\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,296 posts\n01-13-2025 at 05:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019m with you!\nSay a cyborg wanted to join. Technically he/she is capable of doing it, but this place is rife with anti-cyborgites. I can prove it:\nQuestion to any forum member;\nWhen was the last time you invited a cyborg over for dinner, or just drinks and snacks? Didn\u2019t think so...\ud83d\ude11\nstager\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n85 posts\n01-13-2025 at 07:36pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWHY???\nBecause there have been too many cats and dogs trying to log on.\nLast week gerbil tried to post.\nThey all hear far better than humans and their participation would make humans feel inadequate.\nThis has got to stop.\nI fully support Audiogon's requirement that only humans post here.\nallanblissett\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n172 posts\n01-20-2025 at 11:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSeems like they fixed the issue .\ncincyjim\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n142 posts\n01-22-2025 at 02:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nApple says your password can be compromised you need to change your password to something with ten or fifteen letters, numbers or some other stuff.\nsfgak\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n212 posts\n03-20-2025 at 11:35am\nC","title":"Why do I have to prove I am a human,  every time I refresh a page on this site ?","url":"https://forum.audiogon.com/discussions/why-do-i-have-to-prove-i-am-a-human-every-time-i-refresh-a-page-on-th"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193885-198816\nEdit\nWhat are we hearing below 20hz?\nIt is often said that the human ear can hear 20hz to 20khz in range. This varies from one person to another and usually diminishes as we get older. So..........I listened to a test record the other day. It had tones from 20 hz down to 15 hz if I remember right. Anyway, at 20 hz, I could hear it very well. Each note after was down in 1 hz steps. I could hear down to 17 but each below 20 became more faint. This would be due in part to the speakers which are rated down to 18 hz. If I cannot hear below 20 hz, what am I hearing?\nLikewise, a pipe organ can reach 8 hz from a 64 foot pipe. Few of these even exist but they do exist. 16 hz is produced from a 32 foot pipe. Most pipe organs probably don't have much more than the 32 foot pipes and some don't even have that. At any rate, the sounds are clearly heard, at least something is heard. The latest pianos are now producing 16 hz tones. We are able to hear the notes. If we can't hear below 20 hz, what are we hearing?\nbillpete\n03-30-2025  5:30pm\n9 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ncleeds\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,635 posts\n03-30-2025 at 05:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nbillpete\nIf we can't hear below 20 hz, what are we hearing?\nLower frequencies are felt more than \"heard.\"\nbaylinor\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,671 posts\n03-30-2025 at 06:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n100% correct. Below 20 hz, my chest pounds.\nbillpete\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n396 posts\n03-30-2025 at 06:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI feel it too but what am I hearing? Those low notes on the organ (and now piano) are making a sound that I can hear. If I can't hear 16 hz, what am I actually hearing? It isn't nothing and it isn't just that I feel it, I hear something. Or..........am I just nuts?\nbillpete\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n396 posts\n03-30-2025 at 07:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOK, so I read now that under ideal conditions, that the human ear can hear as low as 12 hz and as high as 28 khz. That is well beyond what we're always led to believe. Not everything on the internet is true but my ears are telling me something different than what is normally thought of anyway so...... Since I seem to hear something below 20 hz, I feel better about reading that. There are also speakers that claim to reach 12 hz, Golden Ear maybe? I also thought the Avante Garde large horns were able to reach maybe even 10 hz? I'm not aware of anything that has been recorded to those levels so not sure of the point but range beyond what we can hear makes some sense to me also. If a component can go well above and well below our hearing range, it seems like it should be able to reproduce within our range all that much easier or better. I'm probably oversimplifying but this is the non-engineer in me, thinking this way. Many components show a frequency range well beyond what we can hear, such as cartridges reaching 10hz to 40khz or higher, preamps that show 1hz or 5hz to well over 100khz etc. I appreciate those numbers, even if I can't hear them. Maybe I just like to be impressed by numbers but I appreciate them nonetheless.\nquincy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n487 posts\n03-31-2025 at 09:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nInteresting post!\u00a0 Thanks for the question and replies!\u00a0 I found it interesting and educational!\nbillpete\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n396 posts\n04-01-2025 at 03:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSo, has anyone ever heard or felt the presence of the 64 foot organ pipe? I have not but would like to. Hard to imagine when the organist hits that note, that the crowd hears nothing. That would be very odd. Anyone??????????\nAlso something that floats around the internet is that 14hz is a lethal tone. A ridiculous claim. The tone at a certain SPL, certainly could be lethal as could many other frequency range tones. It is the SPL decibel level that is the danger. Nobody dies in church with a large pipe organ. The lowest tones can make you feel a bit uneasy, kind of like a carnival ride. I enjoy that odd feeling that I get from the deepest bass notes. It borders on \"uncomfortable\" like a thrill ride.\nThanks\nroxy54\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,245 posts\n04-01-2025 at 04:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI once owned TDL Monitors that were large transmission lines and were said to reach down to 17hz. On a few recordings I could feel what seemed like a mild earthquake in the room.\nbillpete\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n396 posts\n04-01-2025 at 05:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@roxy54\nYes, my AR 9's cause considerable vibration in my listening room as well. The hardwood floor vibrates at times, interesting sensation. What did you hear at the same time? I hear very low bass, according to the test record, I was hearing 17 hz. Probablly most bass below 30 hz is going to cause considerable vibration and will also depend on the SPL as to how much. I'm still trying to figure out what we actually hear at those lowest tones but from what I've read, it is humanly possible to hear 12 hz. Still poses the above question. What happens at 8 hz or 10 hz?\nedsemble\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2 posts\n04-19-2025 at 07:43pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWe can\ndiscern\ndistinct pitch\n@ 20 Hz, some tests reporting 17-18 Hz.\nWe can definitely hear sound of some sort below 18 Hz, but we wont hear it as a tone. When I played back 16 Hz on the subwoofer, I heard a chuffing sound, like that from blades of a helicopter sitting at idle. But no sense of a distinct tone.\nPlaying my record of Holst\nThe Planets - Saturn\n2/3ds into it\nI could easily hear the organ pedal tone of E(0) 20.6 Hz -\nas a distinct tone\nMore to discover\nBest pre-owned subs below $1k?\nHelp me to choose turntable below 1600$.\nNews: Qobuz Hi-Res platform's debut i...\nBest subwoofer below 40Hz for Magnepa...\nBest power amp below US $ 20.000,00 ??\nAyon Audio S-10IIxs\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"What are we hearing below 20hz?","url":"https://forum.audiogon.com/discussions/what-are-we-hearing-below-20hz"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193261-112139\nEdit\nSeeking a Power Conditioner\nMy system consists of the following:\nMartin Logan 11A Impression Loudspeaker (hybrid)\nBryston\u00a04B3 cubed power amp-300/channel into 8 and 500 into 4\nBryston Bp-19 preamplifier\nChord Qutest DAC\u00a0with S Booster Linear power supply\nLumin U2 mini streamer with LHY Linear power supply\nRead reviews on both Niagra 1200 & Puritan Audio PSM 156 power conditioners and the reviews were extremely positive. While reading I came accross a review of both products\u00a0by Audio Science Review (ASR) who claims his reviews are objective with scientific data supplied and his reviews were not nearly as positive to say the least. Anybody have any thoughts on how I should proceed with the differing of opinions.\u00a0 Thank you.\nkjl1065\n02-19-2025  8:06pm\n26 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ngkelly\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,124 posts\n02-20-2025 at 12:52am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFirst of all with your system, I would recommend a Niagara 3000 or 5000.\nAs far as ASR, there is a lot of Kool-Aid being drank in this hobby. He drank some pretty weird Kool-Aid.\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n02-20-2025 at 01:51am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTwo direct lines... 10 gauge, one for power conditioner and all components except amp. Amp, directly into wall.\nLook at the best Shunyata or IsoTek you can afford.\n@gkelly +1 Pay absolutely no attention to ASR.\nbillstevenson\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,319 posts\n02-20-2025 at 02:36am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n+2 for pay no attention to ASR.\u00a0 As far as power conditioning is concerned there is a controversy sparked by misunderstanding.\u00a0 It is only needed in locales where the power supply is not tightly regulated or in areas served by old infrastructure or where a recent increase in population has resulted in a power demand that is taxing the power grid.\u00a0 Not everyone needs power conditioning and if it isn't needed it does no harm, but it does no good either.\u00a0 Hence the confusion.\u00a0 I live in South Florida and in the summer months in densely populated areas the voltage swing goes from ~105 to ~120vac.\u00a0 Especially during peak usage times this can affect audio performance.\u00a0 I use a PS Audio P20 and it smooths things out completely.\u00a0 I don't have to fuss with the bias on my tube amp any more and tube life is greatly extended.\u00a0 That is real world experience over the past 8 or 10 years.\ncarlsbad2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,036 posts\n02-20-2025 at 04:28am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nASR writes fiction to attract clicks.\nThat said, have you ever seen a negative review (except the clowns at ASR)?\nNeither of them would be on my list.\nGo with a regenerator.\nJerry\nkjl1065\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n89 posts\n02-20-2025 at 12:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHave a question about ASR. reviews. I have been into this field for about 40 years and believe that each piece of the puzzle makes a difference in what we ultimately hear, room treatments absorption, diffusion etc. cables and interconnects, power cords, amps, preamps. dacs, streamers, etc. I have always believed reviews whether from magazines or fellow audiophiles are credible. Of course, I attempt to listen for myself before making a decision. For example, I plan to purchase the Schiit Loki Max, based on reviews.\u00a0 Now I come to the issue of power conditioners.\u00a0 I currently have a Richard Gray conditioner that is 20 years old or more.\u00a0 I wanted to make a change on the rationale that conditioners have improved technology\u00a0 since my purchase. My goal is to reduce the noise floor so I can listen to music at 55 dbs and still hear the dynamics and full body of the music. In my quest, I figured that less noise, more music. Then I read a few positive reviews in print and was ready to make a buying decision, until I came\u00a0 2 reviews from ASR, who claims his tests are conducted with objective scientific instruments, and he concluded that 2 specific conditioning products\u00a0 that I already mentioned make almost no difference at all as to the goals of reducing the noise floor or otherwise.\u00a0 On this site, a few people have said his supposedly scientific testing is not useful, and that the subjective reviews online and in print have more value as compared to his objective tests. Are the conditioners for real?\u00a0 \u00a0Who is correct and what is your rationale for your conclusion? Would appreciate any thoughts that you may have.\u00a0 By the way, my budget is in the $3000.00 range, new purchase only. Thank you.\ndean_palmer\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n94 posts\n02-20-2025 at 12:29pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGet the best power conditioner you can afford, but be aware that there is no magic, just reality of electricity. If there is a benefit, it can be measured, so don't believe false claims of better audio in most cases. Where I live in Florida I'm done with paying for repairs from dirty power and surges, even when the house has surge protection (that didn't protect the stereo and on-demand water heater). I have not read the reviews of power conditioners on ASR, but it's electric and there should not be such negativity from this group to looking at the facts about the measurable characteristics of the power handling. I have a simple conditioner from Panamax and I have seen it work in storms and with generators that push dirty power as well. We have had fireballs traveling down the power lines and houses having things burst into flames even with surge devices installed as I assume it was a bigger event than they could handle. I have had to repair two McIntosh components due to immediate and latent failures related to this type of issue. A good conditioner will tell you that there is an event happening and dirty power may not be obvious, but can cause damage. I cannot plug things into the wall unless I want to risk losing them. A good conditioner should also have the high current capacity needed for pretty big high current amps. Every system and device is different so do your research on the actual power needs of your system, not this crazy idea that everything must be plugged directly into the mains with a cord made of unicorn hair. IMHO, you are not going to get any sonic benefit, just cleaner power and protection.\ncleeds\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,635 posts\n02-20-2025 at 01:35pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\ncarlsbad2\nASR writes fiction to attract clicks.\nPretty much. ASR promotes controversy and drama. Some people like that stuff.\nwinoguy17\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,344 posts\n02-20-2025 at 02:27pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI used to have my amp plugged directly into a dedicated 20 amp line, pre and source on another, protected by a PS Audio in wall surge protector. I would always unplug the amp any time thunder storms were forecast. After a little research, I bought this :\nhttps://www.crutchfield.com/p_756ELT15PF/Furman-Elite-15-PFi.html\n. Everything is now plugged into it, and it is plugged i","title":"Seeking a Power Conditioner","url":"https://forum.audiogon.com/discussions/seeking-a-power-conditioner"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n186079-20253\nEdit\nWhy whole house surge protectors are not enough\nTL;DR:\nOne measure of a surge protector is the clamping voltage. That is, at what voltage does the surge protector actually start to work. Whole house surge protectors are limited to no less than ~ 600 Volts (instantaneous) between a leg and neutral or ground. That\u2019s up to 1,200V if symmetrical.\nThe best surge protecting strips and conditioners clamp below 200 Volts.\nPlease keep this in mind when deciding whether or not to use surge protectors at your PC, stereo, TV, etc. in addition to a whole house unit.\nI wrote more about this here:\nhttps://inatinear.blogspot.com/2021/09/time-for-new-surge-suppression.html\nNo manufacturer of whole house surge protection claims that their devices alone are enough for sensitive electronics when you check the fine print.\nerik_squires\n08-26-2023  3:18pm\nNext \u203a\nLast \u00bb\n77 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nupshift\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n92 posts\n08-26-2023 at 04:49pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'd like to second your callout regarding surge suppression and LAN protection from your blog.\u00a0 A few months ago we had lightning hit a tree that was just 15 feet from our electrical entrance with is underground. It took out 2 TVs, 2 UPSs, Router, 3 Switches, BlueSound Node, and the Inverter for my solar system, One of the UPSs actually smoked!\u00a0 One TV would not even power on, the HDMI ports and LAN port did not work on the other.\u00a0 I suspect the static charge traveling through the LAN as taking our the2 TVs and the LAN equipment. Strangely enough, the cable modem was not damaged.\u00a0 I have since added lightning arrestors to the cable and LAN networks.\nupshift\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n92 posts\n08-26-2023 at 04:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI should have added, that I had a whole house surge suppressor in place on the outside panel also.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n08-26-2023 at 05:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019d like to second your callout regarding surge suppression and LAN protection from your blog. A few months ago we had lightning hit a tree that was just 15 feet from our electrical entrance with is underground.\n@upshift Sorry to hear that but really interesting.\nI want to warn you not to use grounding Ethernet arrestors inside your home. Use those, if any, outside or as close to that edge. Inside stick to isolators. The most recent thinking I\u2019ve seen is that grounding Ethernet cables during a surge just allows a high current surge to form through MORE devices when otherwise you wouldn\u2019t have one. Better to isolate the gear and let lightning find a path through a single device and it\u2019s power cable than to form a long circuit and let it take out even more devices downstream. So far during the worst of the lightning I\u2019ve only lost a cable modem, which wasn\u2019t mine anyway. \ud83d\ude01\nAlternatively, use fiber converters to air-gap your gear.\nAfter installing my whole-house suppressor lightning took out a laptop. It was the only PC in my home that was plugged in but NOT on a surge strip.\nThe same way audiophiles are kind of ridiculous with having too much gear to play music, we also have a lot more Ethernet devices hooked up than the average person, though hard core gamers are close.\u00a0 For many Americans who have Internet access Wifi is the only connection they use and lightning is not the same problem than for someone like me who has a dozen items hooked up via copper networking cables.\nupshift\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n92 posts\n08-26-2023 at 06:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@erik_squires\nThanks for the update, I didn't realize that.\u00a0 I am using a grounding type arrestor, I'll check out the isolators.\u00a0 I am using optical between my router and my audio equipment, mainly to replace a 50' run of ethernet cable.\u00a0 Have a plan in place to do the same throughout the house.\u00a0 Would be nice to see optical connections supported on more equipment like modems and routers but realize that it may be a limited market.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n08-26-2023 at 06:19pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI am using optical between my router and my audio equipment, mainly to replace a 50' run of ethernet cable\nA solid idea in terms of minimizing surge risk at least.\u00a0 The longer the Ethernet cable, the more the antenna effect it can have.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n08-26-2023 at 06:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI want to point out that lightning entering the Ethernet system without actually coming through the cable provider\u2019s wiring is an edge case, but exactly the sort of problem I\u2019m worried about.\nThat is, my guess is that 90% of home network surges happen from the copper that goes from outside to inside of the home, and the remaining are from induced (EM pulse) currents from INSIDE the home Ethernet wiring.\nThe longer a run of Ethernet the better it may pick up a lightning surge. From what I\u2019ve read this danger starts around 30\u2019 long runs.\nOnce the wiring is involved the next question is how will it find a path to ground? That path is often through a power supply somewhere. Once that gap is broken through everything in the way will fry as the surge arcs over. In these cases shorting (MOV) based surge protectors become co-conspirators by offering a low-volrage gap to ground.\nNetwork isolators work by increasing the necessary arc-over voltage by 4kV at a time. This forces the surge current to look for a path with less resistance to ground which hopefully involves fewer devices.\nAnd this is the thinking I've read lately.\u00a0 You may not stop the surge current, but you can reduce the total number of connected devices involved.\u00a0 If you fry a cheap switch instead of your switch, TV, streamer, PC, etc. it's a good thing.\ncarlsbad2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,036 posts\n08-26-2023 at 11:09pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nErik,\nGiven that I don't have to deal with lightning where I live, and power is actually underground so cars don't hit poles either.\nBut I would rather take my chances and buy new gear if damaged than compromise sound quality.\nJerry\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n08-26-2023 at 11:26pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@carlsbad2\nDo whatever you\u2019d like so long as you remain informed. :)\nPersonally, I don\u2019t even want to LIFT the equipment off my rack, much less deal with insurance or replacements. :) Also, I run some nice PC\u2019s here and don\u2019t want them to fry with my data on them, same for my music collection.\nHere on the SC coast I have underground power in my neighborhood but that doesn\u2019t stop the power from glitching due to transformer and other power issues elsewhere. My surge protectors or UPS has to intervene about 3x a year even without lightning or known vehicular assaults on my gear. :)\nAs for the rest of the home, I have a lot of permanently attached devices besides major appliances such as automated lights, fi","title":"Why whole house surge protectors are not enough","url":"https://forum.audiogon.com/discussions/why-whole-house-surge-protectors-are-not-enough"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194092-1640\nEdit\nHouse Power Supply  - getting the best out of it!\nThere are lots of threads about approaches on how to make the best of the household power supply.\nE.G. Do I need power cables, or Do I Need a power conditioner, etc...\nHaving experimented extensively with cables, plugs, outlets and power conditioners I thought I would throw my 2 cents worh into the mix.\nI will state now, power cables can make a noticeable improvements - if you buy good cables\nNOTE: as the quality of the components inceases, you will need a very good power cable (see links below\u00a0for some pointers)\nTo start with, I found that buying a power condtioner early in the process had very little impact on sound quality, mainly because, as I discovered later,\u00a0 my house power was actually pretty clean and my cables at that time were not capable of conveying any improvements it made.\nSo, as I was developing my own cables, I took the following aproach....\nDetermine the stability of your houshold supply (i.e. without getting too technical and by using my\u00a0earsl)...\ninstall very good power cables on every component\nNOTE: I found plugging\u00a0power amp(s) directly into the wall outlet provided the best dynamics andbass performance\ninstall hospital grade outlets where needed - they make a huge improvement by camping the plugs like a vice\nif you are still not happy - install dedicated lines to audio outlets\nNOTE: I stopped after installiing a dedicated line because there was no noise\nif there is still noise on your system - then get a very good power conditioner. I would suggest looking at $2000+ units - most units below this price point will probably\u00a0provide very little tangible improvements and impact amp dynamics\nIf you are still experiencing noise, then get a power regeneration unit.\nOne thing I have not mentioned here - My other cables -\nI.E. Speaker and Interconnect cables\nI have already invested heavily in ensuring these were capable of extremely good performance. Without them, you will not be able to hear the more subtle imrovements that good power components and conditioners will convey.\nFor more info on my other cables Take a look at\nhat I have found makes a good-cable\nDIY Helix Geometry Cables\nHope you find this post and threads useful\nRegards - Steve\nwilliewonka\n04-15-2025  8:05pm\n0 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nMore to discover\nAmy Winehouse LP Lioness:Hidden Treas...\nMacintosh/Sonus-Faber House of Sound ...\nDetails on wiring my house for sound\nYamaha c-2 vs. modern powerhouse\n13.2, 5.1 and so on.  \"the best seat ...\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"House Power Supply  - getting the best out of it!","url":"https://forum.audiogon.com/discussions/house-power-supply-getting-the-best-out-of-it"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193866-198816\nEdit\nAnyone wear gloves to handle vacuum tubes?\nI wear cloth gloves to change or to test tubes. Does anyone else do this? I see lots of bare fingers handling tubes on ebay. If I ever do touch them with bare skin, I am very quick to wipe with dry cloth after. Just wondering what the rest of the world does. Thanks\nbillpete\n03-29-2025  6:37pm\nNext \u203a\nLast \u00bb\n74 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nmulveling\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,475 posts\n03-29-2025 at 06:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNo. Normal skin oil is no danger to the tubes. You know what is a danger to tubes? Dropping them. And what makes one more likely to drop them? Those cheesy, slick white cotton gloves included with some tube gear. It\u2019s fine if you use gloves with a better grip than bare skin.\nThink about a 100W incandescent bulb - that\u2019s pushing out at least as much heat as a power tube like KT88, with a much thinner and weaker glass envelope - and we don\u2019t worry about skin oils there either.\nI guess we\u2019re all still paranoid about skin oils from those horrendous halogen bulbs of the 1990s.\nbillpete\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n396 posts\n03-29-2025 at 07:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@mulveling\nInteresting. I haven't dropped any yet but they do not improve grip, that's for sure.\nHated the halogens, at least in the house. Good for starting fires, not much else.\u00a0 OTOH, I had halogen bulbs in my truck that lasted over 120k miles and they were on 100% of the time. It's the only good thing I have to say about them but............there is that. :)\nozzy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n7,835 posts\n03-29-2025 at 07:40pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhen I owned tube equipment, I always wore the cotton gloves.\nozzy\nhilde45\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,101 posts\n03-29-2025 at 10:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI use kitchen tongs.\nJust kidding. I use my teeth.\nsls883\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,084 posts\n03-30-2025 at 01:13am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNo, but I wash my hands if they're oily.\nGloves might be nice if they aren't slick.\u00a0 I don't like to wait for the tubes to cool off.. \ud83d\ude42\nbaylinor\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,671 posts\n03-30-2025 at 01:19am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI used to until I found out it doesn't matter.\nmofimadness\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,591 posts\n03-30-2025 at 01:25am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI always wear gloves.\u00a0 Kevin Deal, IMHO, one of the top authorities on tubes and who I've known for over 40 years, says the oil from your hands won't hurt the tubes in any way...I still use gloves.\nTo quote Kevin:\n\"As for the glass itself, despite what some people might tell you, the oil on your fingers will NOT damage the glass or leech through it.\nTubes are not halogen bulbs. Tubes may get hot to the touch, but your finger oil will not cause the tube to break when heated up, nor will it affect tube life or sonics. It will not go through the glass.\"\nbillpete\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n396 posts\n03-30-2025 at 01:51am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks all. I was never concerned that my skin oil would penetrate the glass but wondered if it could more or less \"burn\" to it. Some people have marked with some sort of paint on their tubes. I don't but I suppose if they use the right stuff, it can't be any worse than the original paints that mark the tubes. Some of that is better than others. Bugle boy white paint is one of the worst at wearing off.\nAnyway, I'll worry maybe a little less about it but will probably still use them. If I feel particularly dry, I tend to worry less and then I still wipe them down after putting them where they are going. Can't hurt to keep them clean I guess.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n03-30-2025 at 02:06am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNot always, but was careful to clean them with alcohol wipes before turning them on\nbillstevenson\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,319 posts\n03-30-2025 at 02:20am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf the tubes are hot and there is not time to wait for them to cool sufficiently for safe handling, by all means wear gloves.\njond\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,109 posts\n03-30-2025 at 02:33am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI wear gloves if the tubes are still hot otherwise no.\ntheo\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,767 posts\n03-30-2025 at 03:12am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAlways wear cotton gloves I get from Dan at dedicatedaudio.com\ntomcy6\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,689 posts\n03-30-2025 at 05:11am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019m pretty sure that back in the heyday of tubes, the 50s and 60s, no one wore gloves to handle them. Glove wearing may just be more audio tweakery.\ntestpilot\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,020 posts\n03-30-2025 at 10:21am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf you have expensive NOS or OS tubes you might want to wear gloves to help prevent body oils from removing the sometimes delicate silk screen tube markings. \u00a0Nothing to do with decreased performance or longevity, but merely cosmetic\nknotscott\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,430 posts\n03-30-2025 at 10:44am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI just got an idea to market audiophile vacuum tube gripper gloves...\nthecarpathian\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,296 posts\n03-30-2025 at 11:34am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI use kitchen tongs.\nJust kidding. I use my teeth.\n@hilde45\nrcm1203\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n124 posts\n03-30-2025 at 11:35am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI wear gloves with the grip dots which helps keep hold of the tubes. As for the why, I do it for aesthetics. I keep my gear clean, and oil from the skin attracts dust. Anyone who has ever pulled tubes from an old TV or radio knows how dingy they look after many hours of baking on the dust that has settled on them.\nyogiboy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,232 posts\n03-30-2025 at 12:25pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI use these when I want to swap out a tube that is too hot to handle!\nrenosteve\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n42 posts\n03-30-2025 at 02:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI've always used gloves, just to be safe & no fingerprints. Its like chicken soup, it can't hurt.\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,825 posts\n03-30-2025 at 02:27pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMaybe one doesn't need to wear some type of glove when handling tubes, but I always do.\nbillpete\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n396 posts\n03-30-2025 at 02:41pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@hilde45\nDo you remove te","title":"Anyone wear gloves to handle vacuum tubes?","url":"https://forum.audiogon.com/discussions/anyone-wear-gloves-to-handle-vacuum-tubes"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194028-204007\nEdit\nProblems replacing electrolytic capacitors on my Eosone rsf-600 dipole speakers.\nI played Gila Monster by KGLW and I noticed\u00a0 the mid to highs sounded horrible. I was ready to give up on them\u00a0until I discovered the problem with electrolytic capacitors drying up. I replaced the 16uf & 100uf electrolytics, both in the high pass due to dipole, rear tweeters, with dayton polypropylene capacitors. The sound came back alive in my speakers. Now, the issue I face is when I turn the speakers to a high volume, there\u2019s some dampening and distortion going on in the high frequencies. In order to fit the 100uf & 16uf poly caps, I had to cut about 5\" of 16 gauge ofc so I could sticky mount them to the side of the cabinet. I\u2019m good at soldering so that\u2019s not the issue here. I really love these speakers and will do anything to fix them. Any help or advice would be gladly appreciated. The original electrolytic caps were made by tecate, 85\u00b0C, 50 v, 10\u00b1 100uf & 16uf.\nArnie Nudell & Paul Mcgowan really knocked it out of the park with the Eosones. These speakers have become meaningful to me due to the history behind them. Long story short, they loved music, specifically operas, and hoped to enrich America\u2019s flailing art and culture scene.\njmncbh\n04-11-2025  1:15pm\n3 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,218 posts\n04-11-2025 at 02:19pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDon't like electrolytics in speaker crossovers, but 100uf eliminates film caps and appears you don't have space to fit in any case. If you had lower values VHAudio ODAM the way to go. I'd check out Clarity and Jantzen,other quality cap manufacturers, I consider Dayton cap pretty mediocre, but could be burn in issue with those Daytons.\njmncbh\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5 posts\n04-11-2025 at 02:31pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhat should I do with the 100uf capacitor? I actually replaced the 16uf dayton with Janzen since I had some on hand: that did not fix the problem.\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,218 posts\n04-11-2025 at 03:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI don't know what's available in 100uf but try to find reputable brand and don't need 50V rating so lower voltage rating may open you up to speaker specific electrolytic. Check partsconnexion, Sonic craft, also like hificollective over in UK for quality electrolytics.\nMore to discover\nProblems replacing electrolytic capac...\nany eosone fans?\nManual/Brochure Eosone RSF series.......\nReview: Eosone RSF-400 Monitor\nAre Eosone speakers worth anything?\nAurender N10\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10IIxs\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Problems replacing electrolytic capacitors on my Eosone rsf-600 dipole speakers.","url":"https://forum.audiogon.com/discussions/problems-replacing-electrolytic-capacitors-on-my-eosone-rsf-600-dipole"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193531-159739\nEdit\nStreaming network puzzle\nI have been using a TP-Link wireless extender connected to my Innuos Zenith with good success. I recently added a PS Audio P15 power conditioner and wanted to try logging my power data for a while to see how the power quality fluctuates. This involves another network connection so I plugged a cheapo Linksys 5 port switch into the TP-Link and then plugged the P15 and Zenith into the switch.\nNow the puzzle. I use the Innuos Sense app, and it connects fine, I can play Qobuz just fine, but I cannot play any online radio stations. They try and fail after a few seconds. I am a technical guy, but haven\u2019t come up with any solutions. It is probably an Innuos thing and I can post in their forums, but thought I would pick your brains.\nAdded note, this is not a crisis, I can revert back to the original setup easy enough, but thought I would see if anyone had any ideas. Thanks.\nzlone\n03-09-2025  2:21pm\n5 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nmattmiller\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,620 posts\n03-21-2025 at 05:32am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDude please stop! Go get drunk and listen to music, if you even have a stereo system.\nzlone\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,431 posts\n03-21-2025 at 12:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@mattmiller\nWho\u2019s doing the drinking? I spent my career in tech, these are things I think about, I like puzzles and am prone to solving them. If I start sharing my WireShark traces you can stop me. My system is available for review on this site.\nPost removed\nApr 10, 2025\nzlone\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,431 posts\n04-11-2025 at 12:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@dalims4\nJust to see if I could hear a difference. Not a significant change in this case. However, I recently picked up a pair of shotgun biwire cables, Harmonic Technology 9\u2019s, and these\nan improvement, but not necessarily due to biwiring.\nPost removed\nApr 11, 2025\nMore to discover\nUSB Bit Rate Puzzle AMR Off-ramp Amar...\nPuzzle: exceptional sound in custom a...\nKef Reference 1 Meta Impedance Puzzle\nCardas PC puzzle\nJust Puzzled !\nVandersteen Model 2c ii signature\nFocal 36 MONTH FINANCING\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Streaming network puzzle","url":"https://forum.audiogon.com/discussions/streaming-network-puzzle"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n194025-203944\nEdit\nOpinions about particle dampers?\nCheap, easy to build and seems to have fantastic results:\nhttp://www.\nartificialintelligence.fi/\nhifi_damping_calculator_en.\nhtml\nHas anyone already tried such particle damper based solution?\naimoturva\n04-11-2025  3:37am\n0 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nMore to discover\nSistrum racks and the use of Herbie's...\nOpinions about particle dampers?\nActive Dampers\nrecommendations for tube dampers???\nEAT Cool Dampers??\nAyon Audio S-10IIxs\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAurender N100H\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Opinions about particle dampers?","url":"https://forum.audiogon.com/discussions/opinions-about-particle-dampers"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193960-21661\nEdit\nJupiter copper & foil cap\nI'm looking for some advice. I have 4 Jupiter Copper & Foil wax caps that I put in my power amp a few years ago and 2 of them have a \"drop\" of hard wax on the bottom side of them.\nIs this something to be concerned with?\nIs this a sign of a failing cap?\nI emailed Jupiter a few days ago but no response\nThanks,\nScott\nandirocks\n04-05-2025  2:14am\n1 response\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,218 posts\n04-05-2025 at 03:02am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI can't give definitive answer but I'd be leery of placing any part with wax in amps which are generally hottest audio component.\nMore to discover\nBest Copper Dig. Cable For &lt; $300\nCopper Mat on Technics sp-10?\nUsing solid copper Door Bell wire as ...\nAnalytical, revealing COPPER w/\nHow to Attach Spade 10 AWG Solid Copper\nAyon Audio S-10IIxs\nVandersteen Model 2c ii signature\nAyon Audio S-10IIxs\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Jupiter copper &amp;amp; foil cap","url":"https://forum.audiogon.com/discussions/jupiter-copper-foil-cap"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193943-203721\nEdit\nMiflex capacitors in the US?\nHello,\nI\u2019m in the process of building a phono stage, I\u2019m using a few different Miflex capacitors, but am having a hard time finding a 0,47 uF KPCU 01 cap. I think I got the last one from partsconnexion (Canada) and everywhere else I\u2019ve found is selling the same part for twice the price with shipping from Europe or Asia. I was told partsconnexion is not restocking because Miflex went out of business. Does anyone have any leads on US online distributors that might carry these caps still?\nthanks!\ndonnyhifive\n04-03-2025 10:44pm\n2 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nandirocks\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n29 posts\n04-04-2025 at 12:47am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHave you looked at Sonic Craft?\nhttps://www.soniccraft.com/index.php/miflex-kpcu-01-c-301_453_455?osCsid=93n9jvlfqcm33jouqvkaoga1o4\ndonnyhifive\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1 posts\n04-04-2025 at 04:36am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYeah, they\u2019re on my radar but also twice the price I just paid on the other site which was actually not US based. Thanks!\nMore to discover\nRipple current Q for amp capacitors\nReplacing capacitors for my ARC VS110\nProblems replacing electrolytic capac...\nNEED HELP WITH A MIRAGE M1 CROSSOVER-...\nBest Capacitors for Crossovers\nRSX MUSIC SERVER RSX MUSIC SERVER\nVandersteen Model 2c ii signature\nAuralic Aries G2.1\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Miflex capacitors in the US?","url":"https://forum.audiogon.com/discussions/miflex-capacitors-in-the-us"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193859-112139\nEdit\nSeeking a recommendation for a reasonably priced Class 1 SPL meter\nI am in the process of treating my room acoustically and wish to purchase a Class 1 SPL meter, as opposed to Class 2. I believe the Class 1 is accurate within plus or minus 1 DB. Would appreciate any recommendations .\nThank you.\nkjl1065\n03-29-2025 12:34pm\n2 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ntestpilot\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,020 posts\n03-30-2025 at 10:26am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWouldn\u2019t you be better off investing your money into a calibrated microphone that feeds into an acoustic measurement software program like Room EQ Wizard.\ntoddalin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n708 posts\n03-31-2025 at 06:19pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n...And a Class 2 is accurate to within two dB.\u00a0 But both of these are as measured at 1kHz, not across the audio band.\nI have a Quest Type 2 that I bought new in 1996 for business (noise consultant) and had it certified every year and it was never more than 0.18 dB from the standard so a Type 1 wouldn\u2019t necessarily be any closer.\nKnow that in addition to the meter, you will also want a calibrator, and if you intend to keep your meter and calibrator factory calibrated to the standard, the last time I had mine calibrated (am now retired) was ~10 years ago and it cost >$350 + shipping both ways.\u00a0 Actually, the meter, the mic, and the calibrator are all done separately.\u00a0 This was a yearly requirement when I was in business.\nB&K makes the best units, but Larson Davis and Quest are also very good and less $$$.\nBTW, you could buy a used Behringer 2496, 61-band RTA with a microphone or an REW set-up for less money than having your meter factory calibrated/certified just once.\nMore to discover\nReasonably Priced Fuse Upgrade for Ma...\nReasonably priced integrated to power...\nwhat can reasonably be expected of a ...\nBest reasonably priced SACD player?\nFavorite Tube Amps, Reasonably Priced\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nVolumio Primo Plus\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Seeking a recommendation for a reasonably priced Class 1 SPL meter","url":"https://forum.audiogon.com/discussions/seeking-a-recommendation-for-a-reasonably-priced-class-1-spl-meter"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193869-2231\nEdit\nBreak-in time\nAfter decades of enjoying chasing the stick, I\u2019ve peaked and spend most of my energies gnawing the stick\u2026.. and enjoying; convinced more and more of the protracted break-in time of equipment. The unchanged pieces seem better and better. Just leave them alone for some time, I\u2019ve stopped neurotically slotting new in and out.\nYes, the case could be made for habituation. However, I do know what a real acoustic piano sounds like, as well a dobro, female voice and so forth.\nMore enjoyment, less doubt. Perhaps if I just make this small change\u2026\u2026\u2026\nceltic66\n03-29-2025  8:38pm\n4 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nbaylinor\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,671 posts\n03-30-2025 at 01:24am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAnymore, anytime I install something new in my system I run it a full week 24/7 before I do critical listening.\nknotscott\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,430 posts\n03-30-2025 at 10:42am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCaps burn in...maybe other things too. New equipment typically has new caps.\nI installed some new caps in my preamp a couple of months ago.\u00a0 Everything sounding brittle and sibilant for a while....now it doesn't.\u00a0 It's like magic!\nmclinnguy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,158 posts\n03-30-2025 at 12:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAfter having to re-break in speakers nothing surprises me anymore.\nAnd beyond \"break-in\" which may take many weeks there definitely is a \"settling in\" period which may take several days- some claim weeks.\n\"System equilibrium\" is very rewarding.\nStick gnawing.\u00a0Mmmm.\nlarsman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,218 posts\n03-30-2025 at 01:30pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMost of the speakers I've bought new have required weeks if not months to sound like they're supposed to, but they get there in the end. Many headphones require 150 hours or so of break-in time, as do tubes....\nMore to discover\nSR BLACK UEF Outlet break-in and why ...\nBreaking in speaker cables??\nMaggie break in time\nEquipment break in question\nDAC break-in...\nAyon Audio S-10IIxs\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nAyon Audio S-10IIxs\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Break-in time","url":"https://forum.audiogon.com/discussions/break-in-time-3"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193813-168972\nEdit\nany decent 12Vdc power supplies that can be used as a 12V trigger?\nI went online and purchased a 12Vdc power supply to use as a trigger plugged in to a smart plug. I noticed after trying it the 12Vdc power supply was actually putting out 17,4Vdc not 12 and also noticed when shut off or unplugged it takes a while for the supply to shut off/ discharge. Anyone have 12V trigger power supply suggestions?\nThanks\nrbull11\n03-26-2025  7:00pm\n8 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nkijanki\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,510 posts\n03-26-2025 at 08:25pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAre you asking about +12V trigger for power supply sequencing?\u00a0 If so, devices have their own internal pull-up to 12V and are being shut down by pulling it down to GND.\u00a0 I had one power amp that required more current to pull to GND than pre was able to deliver and had to put Normally Closed optical switch in series.\nrbull11\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n74 posts\n03-26-2025 at 09:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have a Micromega M-100 and I want to use a 12Vdc power supply plugged into a smart plug so I can use as a sleep timer. The Micromega has a 12V trigger\nkijanki\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,510 posts\n03-26-2025 at 11:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI believe that your integrated should work without anything connected - it pulls up trigger input internally.\u00a0 In order to shut amp down you need to short this input to GND (or at least to drop voltage below 5V).\u00a0 likely you don't need any external voltage.\nrbull11\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n74 posts\n03-27-2025 at 12:40am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFrom my understanding, The Micromega M-100 has a 12V trigger input, I need a 12V source to trigger it. I was going to plug a 12V power supply into a smart plug and control it with Alexa ( So I'd have a sleep timer )\nkijanki\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,510 posts\n03-27-2025 at 01:26am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYour amp will work, even without anything connected to trigger input.\u00a0 Yes, amp turns ON with the presence of +12V, but this voltage is already there (pulled-up internally to 12V).\u00a0 Try shorting this input to GND - it will turn your amp OFF while removing short will turn it back ON.\u00a0 All you need is switch.\nrbull11\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n74 posts\n03-27-2025 at 01:53am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI just discovered my WiiM pro has a 12V trigger, going to try a cable from WiiM to amp.\nrbull11\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n74 posts\n03-28-2025 at 02:15am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI also discovered by e-mailing Micromega, Thier triggers are labeled backward due to a manufacturing issue, so I was plugged in to the output instead of the input. Waiting on my 2.5mm to 3.5mm trigger cable to come in tomorrow so I can try it with the WiiM Pro.\nrbull11\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n74 posts\n03-28-2025 at 11:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGot the cord for the WiiM pro from Amazon and it works great. I believe a switched mode 12V power supply would work with the smart plug too, the power supply I got probably would work but it takes a while to discharge so the voltage drops enough to shut the amp off. I never left it on long enough to find out.\nMore to discover\nLexicon MC-1; DC-1 Power supplies\nWhat are the different Levels of qual...\nPower cords with inductive Aloia powe...\nSimple and Effective Upgrade for Wall...\nPreamp Power Supplies Inboard/Outboard\nAurender N100H\nFocal 36 MONTH FINANCING\nAuralic Aries G2.1\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"any decent 12Vdc power supplies that can be used as a 12V trigger?","url":"https://forum.audiogon.com/discussions/any-decent-12vdc-power-supplies-that-can-be-used-as-a-12v-trigger"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193773-46301\nEdit\nStream Tidal to Oppo BDP-105?\nCan you stream Tidal directly to the Oppo? \u00a0I opened the Tidal app on the Oppo and it instructed me to download the Oppo media control app, which I did. \u00a0Seems like you should be able to download the Tidal app directly to the Oppo and use the media control app for the interface. \u00a0I have see others say Oppo doesn\u2019t support Tidal now but it seems some people may still be using it? \u00a0Any help appreciated!\nlanjett\n03-23-2025 10:20pm\n3 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nmattmiller\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,620 posts\n03-24-2025 at 06:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe Oppo would need to be connected to Wi fi either with a Cat 5 or using the wireless adapter provided with the player. Then you have to have Tidal open and within the tidal app you can then airplay to the Oppo and hear sound over your system. If this does not work, you may have to connect a seperate music server and connect to Oppo using USB audio cable.\nMatt M\nbuellrider97\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,066 posts\n03-24-2025 at 09:54pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have the Oppo 105 and I\u2019ve streamed Tidal. I used the included Wi-Fi dongle and ran it using the Oppo app ( it\u2019s blue ). It was a few years ago and I was transitioning from a laptop to a dedicated streamer. I also used it for my headphones. Unfortunately for me the DAC is a little dry for my tastes. I never tried running the digital out to my DAC. Cheers , Mike B.\nlanjett\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5 posts\n03-26-2025 at 08:49pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks guys, I'll give those suggestions a try!\nMore to discover\nTidal Sunray vs Gryphon Trident\nNode 2i vs. Cambridge CXN (V2) for Ti...\nTidal Replay Gain Has No Effect In th...\nI built a music discovery app for Tid...\nTidal Connect not showing on iPad\nVolumio Primo Plus\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nFocal 36 MONTH FINANCING\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Stream Tidal to Oppo BDP-105?","url":"https://forum.audiogon.com/discussions/stream-tidal-to-oppo-bdp-105"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193688-181583\nEdit\nShort in my system?\nI keep getting shocked when walk across the room to touch the system, which then pops really loud through the speakers.\nI have a McIntosh 352 tube amp plugged into a Niagara 1200 power conditioner, which is really like a giant surge protector.\nI live in cental NC, and wSo I don't know if theres an electical problem with the house or with the system, or if this just happens sometimes.\u00a0 It also happens sometimes when I touch the floor lamp, just a static spark.\u00a0 Its just so much worse when I touch the amp because its amplified so loud and I'm afraid its going to short out the whole system, or at least blow some tubes.hile its been a cold dry winter, I live on a lake and it rained a couple of days ago so I don't think its the dry weather.\nmojo771\n03-20-2025  1:40pm\n22 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nhifiguy42\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n390 posts\n03-20-2025 at 03:05pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThis happens to me if I'm wearing rubber-soled shoes.\u00a0 It's static electricity and no joke I've had a spark arc about half an inch from the tonearm to my finger, and it's both LOUD and unnerving. Take those shoes off, or ground yourself to a large metal object before touching the gear and I'd bet dollars to dog biscuits it will go away.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n03-20-2025 at 03:33pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt\u2019s not a short!!\nIt\u2019s static electricity, the bane of technicians and electronic assembly. You need more humidity or go barefoot.\nI do encourage you to avoid touching sensitive electronics like that as they can cause dysfunction or damage. I have a DAC which I used as a preamp and whenever this happened the volume would shoot up to maximum. Ouch.\nThese shocks have very little current, but just enough voltage to damage sensitive electronics. One trick is to hold on to a key when you touch something that\u2019s grounded (besides your gear). That will let you discharge the static your body has built up using a large surface area. Won\u2019t lessen the discharge, just the pain of the zap.\nIn case you are curious, you can get\na humidity monitor like this one.\nI like Govee because their phone apps are really solid.\u00a0 Put it next to your rack so you can see how dry your room is before you go adjusting something.\nsls883\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,084 posts\n03-20-2025 at 03:54pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI've gotten into the habit of touching my rack before my gear. I've had static here recently.\nmojo771\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n113 posts\n03-20-2025 at 04:05pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks for all the tips.\u00a0 I have tried touching a few things, like my anti static album brush, but it still happens.\u00a0 I will look into losing my shoes or touching something else and see if that works.\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n03-20-2025 at 04:12pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYes, static. Take off your shoes, walk barefoot.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n03-20-2025 at 04:35pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYour brush will only work if\u00a0 it is grounded at the time you touch it.\n2psyop\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,944 posts\n03-20-2025 at 05:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHopefully you don\u2019t live in an apartment sitting directly atop a power station??\nreubent\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n7,266 posts\n03-20-2025 at 07:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have pretty bad static in the winter when my furnace is running. I have a whole house house humidifier, but still have static discharge. A couple of weeks ago I had a particularly loud static discharge when I touched the lifter on my tonearm. There was a huge POP that came through my speakers, followed by a really loud hummm. Well, it took out the left channel in my Schiit Audio Mani 2 phono pre-amp.\nSo, here's the question: What is the best way to create a ground wire that I can grab/rub before touching any of the components in my system? I think I read in the past that the center screw hole in the cover plate of a duplex outlet was connected to ground. Is this correct? Can I just connect a wire to the center screw of one of the outlets connected to my system? If not, can I connect a wire to either ground lug on my turntable or phono pre-amp and just rub my fingers on the wire before touching one of the components in my system?\ntosnc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n35 posts\n03-20-2025 at 07:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSearch on amazon for \u201cgrounding plug with grounding strap\u201d and you will find a three prong plug that can be plugged into an outlet and a grounding strap connected to it.\njeffbij\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n273 posts\n03-20-2025 at 08:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAssuming that the floor is carpeted, you can make a spray using a fabric softener (1 to 5 dilution) and spray it on the carpet and let dry.\u00a0 There are also commercial product anti-static sprays available as well.\u00a0 You can search Amazon for them. That should help.\nI would avoid using the ground lug on any of your equipment to disipate the static charge.\u00a0 In most cases, it is no different than touching the face plate, etc.\u00a0 (and you definitely don't want to send a high voltage static charge into you cartridge.)\nAnd logic tells me using the same grounding path of a AC outlet would be potentially dangerous.\u00a0 The ground wire at the outlet is there for safety incase there is a fault or short at the outlet.\nreubent\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n7,266 posts\n03-20-2025 at 08:26pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@tosnc\n- I may have a grounding strap laying around somewhere. Was hoping to not have to sacrifice one of the AC outlets on a duplex plug as All of my nearby outlets are in use.\nI submitted the question to Copilot AI and the answer came back that the center hole in a duplex outlet is grounded. Think I'll get out my multimeter and confirm it before going this route.\ntony1954\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,321 posts\n03-20-2025 at 11:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nLooked on Amazon and there are a multitude of \"grounding mats\" that look similar to those anti-fatigue\" kitchen mats. The mats have a ground wire attached.\nAnd of course, you need to have bare feet.\nwhart\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,406 posts\n03-20-2025 at 11:40pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019ve tried grounding mats, brushes with grounding straps, etc. Long ago, I concluded that the best way to run my system is bare feet. I also clean my records in bare feet to minimize the risk of charging them. Resleeving can charge them through friction, which is why I don\u2019t try to shove the sleeved record into a jacket but package it outside the jacket with a 5 mil outer sleeve HDPE that presents like Mylar. (I protect the record on ","title":"Short in my system?","url":"https://forum.audiogon.com/discussions/short-in-my-system"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193641-130910\nEdit\nIf you think about capacitors, check out this video\nOne of my favorite nerd-channels posted this today. It\u2019s about millions of faulty and/or counterfeit capacitors flooding the market in 2002 and after. If you have gear from that era, you might want to check it out.\nWhat happened to capacitors\nmwinkc\n03-17-2025  5:04am\n6 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nknotscott\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,430 posts\n03-17-2025 at 11:36am\nCopy Comment URL\nReport Comment\nEdit\nDelete\ncarlsbad2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,036 posts\n03-17-2025 at 12:05pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe good news is a failed capacitor almost always is detectable visually.\u00a0 Open it up and inspect the caps.\u00a0 If you find the bad one, it is pretty easy to replace.\nJerry\nlarryi\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,674 posts\n03-17-2025 at 01:31pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nA very young man\u00a0 (just turned 18) who works as a part time tech at a local audio shop, has done repair/refurbishing of hundreds of pieces of gear.\u00a0 He mentioned certain brands of caps that almost never go bad and others that he automatically replaces even if they look okay and have an acceptable ESR because he knows they will go bad in the future.\u00a0 He particularly does not like certain Panasonic electrolytics (grey in color) because they almost always end up leaking and the electrolyte is very caustic and destroys board traces when they leak.\u00a0 I just saw a Technics 1500 tape deck he worked on that he replaced 234 of these bad caps; it took him five hours (it would take me five years).\u00a0 Most of the caps he pulled did show signs of just beginning to leak.\u00a0 The owner of the deck is very lucky because there was no big leak damaging a board.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n03-18-2025 at 01:29am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf you suffered from that problem you would have known it by 2004.\nIt wasn't so much a counterfeit capacitor as capacitors that used counterfeit electrolytic.\u00a0 There's a whole story about a chemist who \"stole\" the electrolytic recipe and apparently didn't do it very well.\nNone of this AFAIK has had any impact at all on audio gear.\ndrbond\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n488 posts\n03-18-2025 at 02:14am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019ve had two boards from subwoofers go bad. \u00a0I\u2019m wondering if the culprit is the metallized polypropylene film capacitors which are closest to the power source. \u00a0Looking at them, you can\u2019t tell that those capacitors are bad, from what I\u2019ve seen. \u00a0Any ideas?\nlarryi\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,674 posts\n03-18-2025 at 01:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNo way to know what went bad on the board.\u00a0 If you suspect certain caps, the only way to test this is to remove the cap from the circuit and test it with a meter that tests capacitance.\u00a0 You could do a rough, in-circuit test with an ESR meter (equivalent series resistance).\u00a0 For most home diagnostics, an ESR meter is more handy than a capacitance meter.\nMore to discover\nQuestion about BNC to RCA adapters?\nBasic question about impedance and watts\nIts all about the experiance\nQuestions about VPI TNT-MK-IV Platters\nLearned about DACs, need help to take...\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nBricasti M5\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"If you think about capacitors, check out this video","url":"https://forum.audiogon.com/discussions/if-you-think-about-capacitors-check-out-this-video"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n128497-73725\nEdit\nInsane ground loop; anybody wanna try?\nI have a ground loop that's been killing me for weeks. I've tried several things to limited or no success. I've written to Mike Sanders at Quicksilver, but I'm a little chagrined to keep asking him questions that aren't really the fault of his gear.\nAnybody want to have a go at solving this puzzle? It's driving me nuts, and I'd be grateful for any help.\nRelevant equipment:\nRowland Capri preamp\nQuicksilver Silver 60 mono amps (EL34)\nSunfire True Sub\nAmps, preamp, and sub are all plugged into a Monster 2000, so everything shares a common wall outlet.\nPlugging the amps into separate wall outlets has little effect either way.\nAmps are damn near dead-quiet with no input, so it's shouldn't be the transformers or the tubes.\nAmps plugged in to the preamp (shielded DH Labs RCA cables) hum, and the sub does too. Swapping cables has no effect.\nUnplugging and reconnecting sources (a turntable and a Mac Mini via a Schiit DAC) has no effect.\nUnplugging the sub has little effect (except it eliminates the hum in the sub, haha).\nLifting the ground on the amps reduces the hum \u2014 by about half, but definitely not completely.\nA Hum-X has no (or very little) effect, whether placed on the preamp, an amp, or the sub.\nFor obvious reasons I don't want to lift the ground on the amps permanently.\nI'm not an electrical engineer, but I'm a logical guy.\nIdeas? I'm open to any with two requests: First, if you don't know something for sure, please say so. I don't want to play in electron traffic because somebody just guessed at a solution. And second, if you disagree with somebody, don't call him names, okay? There's more than enough gratuitous meanness in the world right now without insulting people over stereo equipment. Thanks.\npbraverman\n02-20-2017  9:47pm\nNext \u203a\nLast \u00bb\n65 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ncleeds\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,635 posts\n02-20-2017 at 10:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nVery puzzling!\nHave you tried your preamp in another system to ascertain that it's not a problem with it?\nLifting grounds is a good diagnostic tool - obviously it's not a safe remedy - and if that doesn't cure the hum, then it's likely the hum is caused by something other than a ground loop.\nDo you have any other equipment near the audio gear that could be causing the hum? Are dimmers turned off, LED lighting turned off, CATV disconnected from your gear?\ndill\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,636 posts\n02-20-2017 at 11:05pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nRemove the Monster 2000.\npbraverman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n22 posts\n02-20-2017 at 11:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks to both of you for trying. I haven't tried the preamp in another system because I don't have a second one, but I'll rig something up in another spot and report back. Good suggestion.\nNo dimmers, LEDs, TVs on the same circuit.\nDill: I inserted the Monster because of the hum, hoping it might give everything a single ground spot. D'oh! :)\nThanks again. Keep 'em coming. This is a pain!\ntoddverrone\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n840 posts\n02-20-2017 at 11:43pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhat about some history? Has this combo ever been hum free together? Is this pre new to you? Did you changed anything at all before the hum started? Sorry, I know these are basic questions, but if you're at all like me, you'll be searching down rabbit holes for days, just to realize the answer was right where you had started.\nalmarg\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,670 posts\n02-20-2017 at 11:48pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nUnplugging the sub has little effect\n....\nIs the sub connected at speaker level (to the amps) or at line level (to the preamp)?\u00a0 And if the latter, is it connected to the preamp via XLRs, while the power amps are connected to the preamp via RCAs as you stated?\nIn any case, if you already haven't, try disconnecting the sub from whichever component(s) it is connected to, in addition to unplugging it from the AC.\nRegards,\n-- Al\njmcgrogan2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,346 posts\n02-21-2017 at 12:27am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNo dimmers, LEDs, TVs on the same circuit.\nDisconnect any CATV hookup regardless, you may be surprised.\nI fought a ground loop hum for a month or so, and ignored the CATV line because it was on a different circuit. Turned out to be the culprit anyway.\nGround loops find a way.\npbraverman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n22 posts\n02-21-2017 at 12:55am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGreat \u2014 again, indebted to all of you for taking the time. Please don't apologize for asking basic questions. I agree that it's easy to overlook something obvious and I take no offense. It also occurs to me that I never actually tested the outlets with a receptacle tester. I'll do that as well \u2014 having met the previous owners of this house, anything is possible.\nI got the preamp a while ago and honestly don't remember if it ever played nice, though obviously Rowlands have a reputation for being pretty tightly engineered. I like the earlier suggestion to try it elsewhere and I'll figger how do that tomorrow.\nThe preamp has one RCA and one XLR output (one pair of each, but you knew that's what I meant). The amps are connected to the RCAs; the sub is connected to the XLRs via adapter and then by RCA cables. I'll disconnect it from the preamp and try again \u2014 another good suggestion \u2014 and I'll try switching the two sets of outputs.\nThere is no CATV in the house at all. (I have two teenagers. They think I'm Stalin.)\nalmarg\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,670 posts\n02-21-2017 at 01:03am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nthe sub is connected to the XLRs via adapter and then by RCA cables.\nI wouldn\u2019t be surprised if that turns out to be the key to the problem. While the post I made earlier today in\nthis thread\naddresses a somewhat different situation, it provides what may very well be relevant background.\nThe following paragraph in that post may be particularly relevant:\nMost XLR-to-RCA (and RCA-to-XLR) adapters short the inverted signal on XLR pin 3 to ground (XLR pin 1), although I believe Cardas can supply adapters on special order that leave pin 3 unconnected. Shorting XLR pin 3 to ground is appropriate when adapting RCA outputs to XLR inputs, and may be appropriate when adapting a transformer-coupled XLR output to an RCA input. However, at best it is poor practice when adapting an actively driven XLR output to an RCA input. And while many and perhaps most components would be able to tolerate that, with some designs shorting that signal to ground may result in major performance issues (see\nthis thread\n, for example), or conceivably even damage, eventually if not sooner.\nThe likelihood of a problem arising as a result of shorting an output signal on XLR pin 3 to ground with an adapter figures to generally be greatest when the output impedance of the circuit providing the signal is low.\u00a0 That is the case with your Capri preamp","title":"Insane ground loop; anybody wanna try?","url":"https://forum.audiogon.com/discussions/insane-ground-loop-anybody-wanna-try"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n190111-4181\nEdit\nSeeking help with the Innuos Sense app\nHello, Audiogoners. A warning at the top: This post, by necessity, will be long and detailed, as I\u2019m a blind guy who is looking for very specific help with a certain app, and will need first to describe how blind folks employ a screen reader to access their phone.\nMy reason for writing: I\u2019ve been thinking about buying an Innuos Zen Mini, but need to determine if the company\u2019s Sense app will be accessible too me, as the last thing I want to do is drop a bunch of money on something I cannot use.\nA bit of information so this makes sense. On my iPhone, I use VoiceOver, Apple\u2019s built-in screen reader for the blind. It speaks what\u2019s on the screen and allows me to click on buttons, etc. On apps that are written properly, that is. And not all are \u2014 at all.\nI\u2019d like someone who has an Innuos device to check the Sense app to determine if it could work for me. Simply put, there are three general categories of accessibility: Some apps are completely inaccessible, giving a blind user no information whatsoever. At the other end of the spectrum are the apps that work like a charm, allowing a blind guy to do anything a sighted person can. And then there are a great many apps that are somewhere between those two extremes, working to a degree, but not always easily or completely.\nFor anyone still with me and willing to read more, I\u2019ll explain how VoiceOver works. You launch it with a triple-click of the iPhone\u2019s power button. (It\u2019ll say something like, \u201cVoiceOver on. Another triple click turns it off.) At this point, your phone no longer works as it used to. If the app on your screen is accessible, moving your finger around will tell you what\u2019s beneath the cursor. You can also flick left or right to move forward or back from one element to another. When you find something you\u2019d wish to activate, like a button labeled \u201cNew,\u201d you tap twice and you are off to the races.\nIf someone with the Innuos Sense app would be willing to try launching VoiceOver and seeing what happens, I\u2019d greatly appreciate it. If you move your finger around on the screen does it speak what\u2019s under it? If you flick left and right, does it do the same? When you find something you\u2019d wish to tap on, does double-tapping it activate it? Also, are items labeled clearly? Sighted folks would be surprised to know how many times a VoiceOver user comes across a button that is simply called \u201cbutton,\u201d instead of, say, \u201cplay\u201d or \u201cpause\u201d or some such. When that happens, it\u2019s not a deal-breaker, as a motivated blind user generally has ways to soldier on.\nI\u2019ve gone on far too long here, but felt I needed to. If anyone with an Innuos system and the Sense app would be willing to give this a try, I\u2019d greatly appreciate it.\nThanks so very much.\n\u2014 Howard\nhodu\n06-02-2024  7:34pm\n12 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ntomcy6\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,689 posts\n06-02-2024 at 09:38pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe Innuous Sense app, like most apps, uses pictures of album covers as its most common way of displaying music for choice by the user. There will also be text of the artist and name of the album. These are in pretty small print and are not particularly bright.\nIf you tap on an album you can then see the album name in larger print and a track list, sometimes information about the artist or the album in small print.\nThere are many Innuous dealers in the US. If you tell us where you live, I\u2019ll find the dealer near you and give you the phone number and address. I\u2019m sure they\u2019d let you try out VoiceOver in their store.\nSorry I can\u2019t be more help, but if you\u2019re close to a dealer that might be the best way to find out if the app is right for you.\nhodu\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n319 posts\n06-02-2024 at 10:45pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks for the suggestion,\u00a0tomcy6 -- it's a good one. Sadly, the nearest Innuos dealer is close to two hours from here. My wife has suggested that we might find something we'd wish to do near to one of them at some point this summer and make a day of it -- and that could well happen -- but not tomorrow, if you know what I mean.\ntomcy6\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,689 posts\n06-03-2024 at 06:06am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYeah.\u00a0 I'm in the same situation.\nzlone\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,431 posts\n06-03-2024 at 02:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI can do that. I have a few things in my queue, but will try it and report back on the rough results and then we can sort the details. Stay tuned.\nin the meantime, you might contact Innuos and ask them that question.\nhodu\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n319 posts\n06-03-2024 at 03:13pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks so very much, zlone! Don't be in a crazy hurry, but I look forward to hearing what you discover. \u00a0\u2013Howard\naudiotroy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,001 posts\n06-03-2024 at 08:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nwont be a satisfying solution\nthe sense app wont do it however there is a chat gpt plug in for roon,\nforget the Innous a 432evo standard $3500 sounds better and is designed as a roon core and can be upgraded to a higher model.\nrun roon, and talk to chat gpt to run roon for searching content\nor to run roon via siri:\nlong story short roon offers much greater acess to third party control.\nDave and Troy\nAudio intellect NJ\n432evo and roon dealer\nhttps://gitlab.com/doctorfree/RoonCommandLine/-/wikis/home\nzlone\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,431 posts\n06-04-2024 at 03:19am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI gave this a try tonight and I would say that the Sense app does work with VoiceOver. Others are correct in that it is a very visual app, and graphic tiles tend to just yield the verbal statement, \"grid\". However, using single left or right finger swipes allow you to get to the titles and artists which are listed after the album graphic. These are pronounced appropriately. You can also just wander around the screen with your finger and it will say everything you touch.\nI found scrolling a bit difficult, but I think I may not be doing it right. It says to use a three finger swipe up or down, and I had only limited success doing this in any app. Activation works as advertised, single tap tells you what you are on, double tap activates it. I was able to start tracks, albums and radio presets. Other than the album pictures yielding the useless word \"grid\", everything else seemed to state clearly its real function or name.\nMy feeling is it is functional, but not perfect, probably on par with what you find with other apps. If you have real specific questions, I am happy to test them out, just let me know.\nhodu\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n319 posts\n06-04-2024 at 10:46am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWow! This is absolutely fabulous news, and not a little unexpected, too. I cannot thank you enough for having taken the time and done the work to check this out for me. You are too kind. I don't think I'll have any more questions, but","title":"Seeking help with the Innuos Sense app","url":"https://forum.audiogon.com/discussions/seeking-help-with-the-innuos-sense-app"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193584-110830\nEdit\nWhich tubes to buy\nI have an Audio Research Ref. 160s power amplifier. It's almost time to replace the tubes. This will be the first time I replace the tubes in this amp. In the past I have purchased tubes for my Ref. 6SE preamp directly from Audio Research or Upscale Audio. Audio Research furnishes Tung-Sol\u00a0 KT 150 tubes with the amp. and also as replacements. Recently I have found PSVANE brand tubes available. Does anybody have experience using these tubes? I'm trying to get the best sound quality. Tung-Sol made in Russia have been around a long time. PSVANE made in China is new to me. Any suggestions or recommendations?\nmotorheadflash\n03-13-2025  8:15pm\n11 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nnewbee\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,843 posts\n03-13-2025 at 08:29pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI've never used Psvane tubes, but they are getting mixed reviews about quality. Best do some research on this issue as well as whether or not (good or not) they are suitable for you ARC amp. I'm not familiar with your amp but ARC tends to drive their amps tubes hard which would stress 'weak' tubes and cause amp failures. I use Tung sol tubes in other amps (not ARC however) and have never had a premature failure. FWIW\nmulveling\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,475 posts\n03-13-2025 at 09:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI remember that many years ago, Psvane tried to make a KT120 and they were notoriously unreliable. Maybe they\u2019re better now, but there\u2019s no way I\u2019d trust a new KT150 from them until it\u2019s had a lengthy, good track record under its belt.\nYou could ask ARC their thoughts on this tube, but my guess is they won\u2019t be too keen on that. Upscale doesn\u2019t sell JJ or Psvane tubes for a reason.\nPost removed\nMar 13, 2025\nnewbee\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,843 posts\n03-13-2025 at 11:34pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nARC sez you can use KT120, KT88, and 6550's. They just don't necessarily indorse them. Sounds like they voiced the amp for the KT150's.\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n03-13-2025 at 11:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have an ARC Reference 160s as well. My preference is to get the tubes from Audio Research... because they extensively test them and I want to support this great company. I have a spare quad of power tubes I bought from Upscale just in case I needed for testing. In general, I don\u2019t tube roll with Audio Research equipment as they were carefully voiced. That said, a friend of mine tried a GE NOS 6550 in his ARC Ref preamp an liked it... so I ordered one just for fun.\nknotscott\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,430 posts\n03-14-2025 at 11:22am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe Tung Sol KT120s have a good reputation.\nmotorheadflash\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n12 posts\n03-14-2025 at 11:31am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI took mulveling's advice and called Audio Research. They said they use the Tung-Sol tubes in all their power amps including the KT-170 in their new Ref. 330 mono's. They think they sound better and are definitely more reliable.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0I love the way the amp sounds I think I will stay with the ARC tubes for now.\ndocknow\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n333 posts\n03-14-2025 at 01:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@motorheadflash\nI think you are making the right decision.\u00a0 Why have the doubt that tat your tubes are sub-optimal when you are using one of the word's best amps?\ndecooney\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,566 posts\n03-14-2025 at 05:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTo @motorheadflash, I agree, best to stick with the same and what your amps were designed and voiced with originally. \u00a0Best to source from a dealer who truly batch matches the tubes as AR did for your amps new.\nWhile I use close-matched sets of TungSol KT150 / KT120s in my own amps -and-use PSVANE tubes in my preamps and input tubes for my amplifiers, quality has been better the past two years. We'll see how it goes for the PSVANE KT150s, and time will tell, watching forums and feedback. \u00a0I'm evaluating some other PSVANE replacements now that do seem better than my prior pairs from 2-3 years ago fwiw.\nbuellrider97\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,066 posts\n03-14-2025 at 07:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGreetings , I have Rogue gear but here\u2019s my experience over the last 2 weeks. I sent a pair of M-180\u2019s back to Rogue for a repair and upgrade to the \u201c Dark \u201c level. The fee for this was $2495 and comes with new signal tubes ( 3 per amp ). \u00a0They no longer provide NOS signal tubes due to availability, quality and price. Instead they use higher quality new production tubes. When I enquired about Tung Sol KT-120\u2019s which were their standard, they switched to Psvane KT-88\u2019s. They STRONGLY suggested that I avoid current production Russian power tubes including the 120\u2019s and GL KT 88\u2019s. They said if I could source older sets I\u2019d be ok. They said they were close to 50% failure rate on the current ones. So Rogue is shipping with Psvane KT 88\u2019s. They charge $500 for an octet. Considering my amps have all new parts I said to ship back with the Psvanes. They said they like them as much as Gold Lions and they\u2019ve had good reliability. The only Psvanes I\u2019ve used before were the T Series Mark II from Grant Fidelity. They are coated glass and a gold base, built like a tank. I\u2019ll be up and running in about 2 weeks with the Psvanes and I\u2019ll see what happens. At least I\u2019ll have a base set of tubes for the amps. As soon as the amps are broken in I\u2019ll roll NOS Telefunken signal tubes and look for some KT 120\u2019s. I\u2019ll probably bite the bullet and overpay at Upscale, but I\u2019ll feel safe. A few years back I had a brand new GL KT-77 fail in another amp and damage the amp. I also asked about KT 150\u2019s and was told that I\u2019m my amps I would not gain anymore power due to limited plate voltage. Good luck and I hope my ramble helps. Regards, Mike B.\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n03-15-2025 at 05:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nyou can research reliability, customer service, but you need to actually hear them in your equipment/system to know.\nyou can buy both brands from ali-express, just leave them in/on for 60 hrs (no signal needed) to burn them in: listen, keep one, both, return one or both\nKT150 ali-express\ntubedepot has a 20% restocking fee, tubestore does not mention that, but ... I bought from brent jesse, he let me return, no charge, I just paid the shipping difference, and I got a refund, the ones I liked cost less.\nMore to discover\nCary CAD 805 AE tubes\nupgrade tubes for jolida 302\nBuying Vacuum Tubes in Prague, Czech ...\nTubes in PVS?\nTubes and organ music\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nVolumio Primo Plus\nAyon Audio S-10IIxs\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease","title":"Which tubes to buy","url":"https://forum.audiogon.com/discussions/which-tubes-to-buy"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192391-9095\nEdit\nThe Disappearing Act\nNope, I am not talking about some magic trick!\nI often read here and other forums, when someone describing sound of their system\u2026.the music flows and speakers simply\ndisappears\n. Also read similar acclamation for an amp, preamp or DAC.\nWould you agree when someone experience this phenomenon, you\u2019re left with nothing but the music in its purest form. I would say, it\u2019s a testament to the synergy of your components, room acoustics and meticulous setup.\nI would like to know, were you listening to something particularly special when \u2018disappearing act\u2019 happens, or is it a consistent experience across the tracks?\nlalitk\n12-18-2024 12:47am\n28 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nbaylinor\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,671 posts\n12-18-2024 at 01:02am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt depends on the recording, if some engineer is set on a sound coming out purely from the left speaker or right speaker, it will emanate from there. Think Electric Ladyland from Hendrix early stereo experiments. For engineers who like to spread it out, the disappearing act will happen every time. The beauty with a properly setup room and system, is that regardless of what the engineer was trying to do, you will hear it just like he wanted too. But knowing your system, you already know that.\nsteakster\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,220 posts\n12-18-2024 at 02:07am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe Disappearing Act\nYour audio question reminds me of another artform.\nIn filmmaking, the goal is \u2019suspension of disbelief\u2019. To be so engrossed in the storytelling that the audience disregards that they\u2019re sitting in a movie theater. The elements include the script, acting, cinematography, production design, et al. The willingness (mood) of the viewer to be mesmerized also plays an important part. Having a darkened environment helps to block out distractions.*\nIf something breaks the spell - such as bad acting or lack of continuity - then the special experience is lost - and very difficult to regain.\nIMHO, music playback also has a variety of elements that must work together synergistically to draw the listener in. The artistry in the recording, the engineering of the recording, the audio system, the room - and of course, the listener\u2019s mindset. My appreciation of disappearing speakers increased substantially when distortion was finally exorcised from streaming.\n- - - -\n*Trying to recreate the move palace experience in a home theater is a major conundrum. The bigger the budget, the better the execution - usually.\u00a0\ud83e\uddd0\ntoddalin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n708 posts\n12-18-2024 at 02:28am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt\u2019s pretty much across all tracks. You don't hear it from the speakers, per se.\u00a0 The music just \"emanates\" in the room.\nlalitk\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,196 posts\n12-18-2024 at 03:04am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@baylinor\nThat\u2019s an insightful perspective, and you\u2019re absolutely right\u2014recording styles and mixing decisions play a huge role in how the soundstage is perceived. A great system doesn\u2019t\nimpose\nits own interpretation but instead reveals the recording engineer\u2019s intent with precision. Just like mine, your system seems to strike that balance perfectly.\n@steakster\nThat\u2019s a beautifully articulated comparison. Just as a well-crafted film can transport the viewer into its world, a well-tuned audio system can immerse the listener in the music, making the equipment and even the room fade away. It\u2019s fascinating how much the listener\u2019s mindset and environment contribute to both experiences.\n@toddalin\n\u201cThe music just \"emanates\" in the room.\u201d \u2026..Exactly!\nrodman99999\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,207 posts\n12-18-2024 at 03:29am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI call it: taking me from here and now, back to there and then.\nEverything above= +1\nSo many variables!\neurorack\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n72 posts\n12-18-2024 at 10:49am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOP asks if the disappearing happens uniformly -- with all recordings.\nFor me, definitely not. Only with a few LPs and a with a few CDs. In my experience, most recordings and subsequent transfers to media suck; probably because of weak technology, or possibly because the responsible engineers \"had other ideas\" about how things should sound.\nBut don't get me wrong -- I still enjoy this hobby, and I still love music. Most often, the disappearing I experience comes in a brief moment as a shocking surprise, and it transfixes me. In those moments I connect with the music, and -- forgive the metaphor -- I become one with the music.\nnoromance\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10,536 posts\n12-18-2024 at 12:12pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@lalitk\nMy speakers disappeared long ago. It happened gradually as I dialled in the sound with relatively small but significant improvements which, if you can imagine it, pulled the sound from 2D against the plane of the speakers to 3D away from them until they just disappeared.\nAlmost everything I play is simply in the room.\nartemus_5\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,016 posts\n12-18-2024 at 06:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt happened gradually as I dialed in the sound with relatively small but significant improvements\nThis is my experience. Many tweaks who are often dismissed were a big part of the disappearance. First was the footers Then the electric. . A $2 footer tweak started the journey. It wasn\u2019t that the tweak was so astounding. it was the very fact that I heard a difference at all. I was quite skeptical. Not now. I discount few things.\ngrislybutter\nDetails\nDiscussions\nPosts\nThis discussion\n3,627 posts\n12-18-2024 at 06:14pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nvery recording dependent for me. Some albums from the 60s already have it but .likely not. Also genre dependent, studio dependent, etc.\nllg98ljk\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n333 posts\n12-18-2024 at 06:34pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAs others have mentioned, some of the early stereo recordings from the 60's are particularly egregious. I listened to some Mommas and Pappas that were cringe worthy. Especially on headphones. Many songs start with sound from only one channel. Weird feeling of sound in one ear and a vacuum sucking on the other (with phones). No disappearing components from that.\nblisshifi\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,270 posts\n12-18-2024 at 06:54pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe disappearing act is one very prominent characteristic of \u201cthe suspension of disbelief\u201d, but others are required to get there. I\u2019ve heard lots of systems that image so well/holographically such that the speakers absolutely disappear, but the system lacks the appropriate tonal balance, effortlessness, harmonics, etc that it still doesn\u2019t sound \u201creal\u201d.\nlalitk\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,196 posts\n12-18-2024 at 07:18pm\nCopy Comment URL\nReport Comment\nEdit\nDelet","title":"The Disappearing Act","url":"https://forum.audiogon.com/discussions/the-disappearing-act"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193597-180904\nEdit\nPioneer 1280 hook up help.\nHey guys, I'm back seeking more Pioneer 1280 hook up help. I'm running two eq's and two tape recorders through the 1280. TAPE 1 gets a Bose eq and RT-701 and TAPE 2 gets a Technics eq and CT-F850. Should I hook up like this or should I separate thy eq's and integrate them into the ADAPTOR RCA jacks while using a switched audio selector or loose the switched audio selector and the 901 eq altogether and just run the Technics eq through the 1280's ADAPTOR? Thanks in advance for all the previous 1280 hook up help as I'm catching up after 45 years sporting a Technics 200 and Bose 301- HA ha I'm in heaven! Thanks for all the help in advance and all the help previously given as I'm learning at the speed of sound.\n1perpet2\n03-14-2025  5:50pm\n0 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nMore to discover\nReplacement bulbs for Pioneer SA 7700...\nHeadshell suggestion for my Pioneer P...\nPioneer Direct Drives - Now and then?\nthe new line of PIONEER ELITE HT AMPS\nMarantz DV8400 vs Pioneer DV-59avi\nVolumio Primo Plus\nAyon Audio S-10IIxs\nAurender N100H\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Pioneer 1280 hook up help.","url":"https://forum.audiogon.com/discussions/pioneer-1280-hook-up-help"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193552-12336\nEdit\nSubwoofer / Amp advice!\nHello! I'm inquiring about a Simple Home Audio set-up that I'd like to perform. I have Two J.B.L. Century L-100 MKII Bookshelf Speakers with slanted metal floor racks. I'm looking to power them up with at least 100-Watt Amp. I'd also like to Use a 12\" Velodyne Floor Sub with this setup. What can you recommend? I have an old great working 1977 Sansui AU-717 Two Channel Amp & a TU 717 Tuner. But! I don't think I can connect it to the back panel (Floor Sub)? How can this be done? (if) at all.\nAny recommendations on another Amp suitable to connecting with another sub-woofer.\nThanks. thechops\nthechops\n03-10-2025 11:06pm\n5 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nyogiboy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,232 posts\n03-11-2025 at 10:41am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou can use the Sansui. Remove the straps that connect the preamp and amp. You will need 4 of this type of y adapter and 2 pairs of interconnects. One pair will go from preamp out to amp in and the other pair will go to the subwoofer input from preamp!\nPost removed\nMar 14, 2025\nsedond\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,391 posts\n03-14-2025 at 03:11am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nthe au717 is a great integrated amp. competitive with expensive new product available today, especially if refurb'd and updated. (and the tu717 is a fine tuner as well.)\nhere's what i'd recommend, w/this amp.\u00a0 as it has preamp outputs and main inputs, it's a perfect amp to run with a good active outboard 24db/octave crossover and a pair of subs.\u00a0 as the l100 speaker's bass-midrange driver x-over is at 450hz, this means the bass driver plays well into the midrange.\u00a0 if you hi-pass the jbl's at ~60-80hz, they and the amp driving them will be so much happier, and so will your ears.\u00a0 just run the sansui's preamp outs into the inputs of a good outboard active crossover. feed the x-over's low-pass, set at 60-80hz (you can experiment) to your subwoofers. definitely use two; it offers so much better performance than a single sub, for several reasons. each sub will be working about half as hard for the same spl, which means less distortion and tighter bass.\u00a0 soundstaging will be better if the subs are positioned adjacent to the main speakers.\u00a0 and bass from two sources will mean less issues with room nodes.\u00a0 then, from the x-over's high pass outs, connect them back to the sansui's main amp inputs to drive the jbl's.\nwhile i use a dedicated preamp and separate amps, i have been running all iterations of my setup in this fashion since the early 1990's.\u00a0 it's definitely the way to go, imo. and when i 1st did this a bit over 30 years ago, my main speakers were -2db at 20hz, w/crossover frequencies very similar to the jbl's you have.\u00a0 and yes, everything was greatly improved; the main speakers as well as the low end. while i use passive subs. w/active subs, just set their internal x-over at the highest setting; crossing over w/the outboard active x-over at 60-80hz will effectively bypass the powered subs internal x-overs.\u00a0 and some active subs (not familiar w/your specific model) have a direct input that bypasses the internal x-over altogether\nyou can get a decent inexpensive dbx x-over; even new, it would be <$300.\u00a0 but i'd recommend keeping an eye out for a used marchand or sublime acoustic unit.\ndoug s.\nPost removed\nMar 14, 2025\nsedond\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,391 posts\n03-14-2025 at 03:24am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nhere's a pic of my present active 4-way system\u00a0 x-over points are 60hz between subwoofer and mid-bass, 300hz between midbass and midrange, 7khz between midrange and treble. these horns originally had 8\" full range drivers; extensive mods were just completed, which attached extension adapters to use a 2' coax compression driver. pic shows everything being dialed in w/a pink noise generator and spectrum analyzer.\u00a0 it's virtually flat from 20hz to 20khz\ndialing in the system w/pink noise & spectrum analyzer\ndoug s.\nMore to discover\nsubwoofer setup problem\nLowther Bass Reflex and Subwoofers\nHelp with my sunfire subwoofer wiring\nI just purchased  ab&amp;k pt3 preamp...\nPractical tips for setting up your su...\nAyon Audio S-10IIxs\nAyon Audio S-10IIxs\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Subwoofer / Amp advice!","url":"https://forum.audiogon.com/discussions/subwoofer-amp-advice"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193541-201934\nEdit\nDoes this make sense\nMy first ever post please be gentle but I would like an honest opinion am I wasting my time?\nNot sure this is even the correct location for such posts ?\nAlso\n1- I\u2019m no audiophile but I do like and always have liked analog sound over digital\n2- The following is just a prototype things will get more refined this is only a test fit\n3- I usually make watches but got this idea a while back and i finally made this...\nBesides the obvious tilting mechanism Ill let the pictures do the talking\nWell I guess I need to learn how to post pictures\nxtreme65\n03-10-2025  3:10am\n15 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nroxy54\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,245 posts\n03-10-2025 at 04:21am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWithout pictures it makes no sense. You need to have an online site that hosts your pictures, and then you can grab them and attach them to your thread.\nPost removed\nMar 10, 2025\nPost removed\nMar 10, 2025\nxtreme65\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6 posts\n03-10-2025 at 04:59am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nxtreme65\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6 posts\n03-10-2025 at 05:00am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPosting these pictures took all my brain power LOL\nozzy62\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,753 posts\n03-10-2025 at 11:22am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNot sure what your contraption does?\njea48\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,944 posts\n03-10-2025 at 12:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNot sure what your contraption does?\nIt\u2019s a P mount headshell.\nIt has a arm finger lift.\nIt has a fine tuning adjustment screw to dial in the cartridge/stylus alignment.\nMass of the headshell? Just a guess it is low. No more than a standard P mount headshell.\nI usually make watches but got this idea a while back and i finally made this...\n052rc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n78 posts\n03-10-2025 at 08:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe only TT's that have P mount headshells are for DJ and commercial applications. A lot of the carts that are designed for P mounts don't need a headshell. The P mount connection is part of the phono cart and connects directly. That's why all those TT's have S arms. You can't adjust them. Yours you can because you can mount a regular cart on it. I guess what I'm trying to say here is I don't really see a need for what you made. And that's not meant to be a negative comment. Your headshell is really well made. If I ever needed a mount like that, I would use it without hesitation.\nxtreme65\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6 posts\n03-11-2025 at 02:45am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nLove this kind of comment this is what im after.\nasvjerry\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,194 posts\n03-11-2025 at 07:58am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOP, maybe this might help....\nIt's obviously a collectable, at minimum... ;)\nDo any woodworking, or know someone...?\niseland\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n260 posts\n03-11-2025 at 08:25am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHow much would you ask for a headshell? \ud83d\ude42\nknock1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n387 posts\n03-11-2025 at 01:29pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@jea48\nP mount?! Does not look like one.\njea48\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,944 posts\n03-11-2025 at 01:33pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe only TT\u2019s that have P mount headshells are for DJ and commercial applications.\nThat\u2019s not true. I have two vintage direct drive TTs that have P mount head shells.\nA Marantz 6300 and a Sony PS X55. The Marantz has an S shape arm. The Sony has a straight arm.\nasvjerry\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,194 posts\n03-11-2025 at 01:46pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nApparently, not as clunky as one might think....\n....check this out.... ;)\nI'm a tangential arm fan myself....2 Rabco's, one Teac, and Garrard Z-100 'mutant'\u00a0 *L*\u00a0 Used to own a Technics SL-8 but stupid enough to let it go away....\ud83d\ude23\nI just saw a release on this Beo TT the other day.....\nBeautiful....*sigh*\n35K$....'a pittance'....Uh, yeah....\nxtreme65\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6 posts\n03-13-2025 at 05:18am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nasvjerry\nOP, maybe this might help....\nIt's obviously a collectable, at minimum... ;)\nDo any woodworking, or know someone...?\nIf that was for me no no wood work sorry\n--------------\niseland\nHow much would you ask for a headshell? \ud83d\ude42\nI was not planning on selling these really this is not what I normally make but if there was interest and if my limited time allows I'm willing to look into making some as for the price I have no clue all I can say is apart from the Cad time fabrication took me around 15h\n--------------\nAs for why I made this I wanted to test out and understand the tracking error of a sweeping arm as compared to a tangent I know there is an reading error induced by the sweeping arc of a non tangent and\u00a0 thought this could mitigate the error\nslightly\nthe only thing is it would have to be adjusted for every track on an album is it worth it? no clue LOL\u00a0 if so one would need a way say a scale type device on the pivot point allowing you to adjust the angle of the cartridge to the track/position your playing\nMore to discover\nAudio Server Newbie...Does This Make ...\nAudiophile book of \"Common Sense\"\nWhich makes more sense? - CD player v...\nHas anyone used the new Innuos 2.0 Se...\nInnuos sense 3.3.0 is here!\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nFocal 36 MONTH FINANCING\nAuralic Aries G2.1\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Does this make sense","url":"https://forum.audiogon.com/discussions/does-this-make-sense"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193555-149162\nEdit\nPuritan 156 and Furman\nI am currently using a Puritan 156, and was thinking of putting my Furman back into the mix, I know I have to try it so I won't ask if it will improve anything. So I would plug the Puritan into the Furman.\nMy question is any possible negatives doing this? Here is the unit I have.\nhttps://furmanpower.com/products/pl-proc?srsltid=AfmBOooTv9r7hYvOTNUlEXM7pKcEdZnXmikWA8lLCDPCBCbMhUT0FedB\nskids\n03-11-2025  9:30am\n4 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\npinwa\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n341 posts\n03-11-2025 at 09:57am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDon't plug the Puritan into the Furman.\u00a0 First, the Puritan is better than the Furman (I own a Furman Elite-15 PFi and a 156).\u00a0 Second, cascading power conditioners like that is very likely to rob your music of dynamics, especially the amplifiers with no real positives that I can see.\u00a0 An affordable tweak that is talked about in other threads on here are the Vera-Fi Snubway and MainStream plug ins.\u00a0 I think they make an audible difference and they have a 30 day return policy.\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,825 posts\n03-11-2025 at 12:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@pinwa\nhilde45\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,101 posts\n03-11-2025 at 12:37pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nReview here:\nhttps://www.audiosciencereview.com/forum/index.php?threads/puritan-audio-psm156-review-ac-filter.26136/\nConclusions: As you see, I have run a number of tests to give the PSM156 ample opportunity to show it can do something to improve audio but it can't even move the dial one hair. There is no indication or logic that would tell us that it can make an audible improvement. Yet the company says this in the feature list of this product:\n* 52 cumulative stages of purification removes common and differential mode interference, enhancing clarity, staging and dynamics.\n* Equal resistance routing to all outputs realises full dynamic performance.\n* Integral earth management system inbuilt with cleansed ground and star earthing format further lowers the noise\nNone of these things is observed in the measurements.\nThe device however seems to have real filtering in there as opposed to toy implementation we see in other audio devices. So if you have audible mains related interference that is above a few hundred Hertz, then the PSM156 may have an effect.\nAs an audio fidelity improvement device, I can't recommend the Puritan Audio PSM156. As a mains filter in general, it seems to be well built and does a far better job than typical consumer gear sold for this purpose.\nsteakster\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,220 posts\n03-11-2025 at 05:10pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThere will be no electronic damage by daisy-chaining the two units. How it affects the SQ needs to be determined.\nMy electricity is very dirty. For my source components, I daisy-chain an active balanced power conditioner with a passive power conditioner. For my 200w amp, I only use a non-current limiting passive power conditioner.\nBlack background. No loss of dynamics whatsoever. None. Much depends on the system synergy. It took years for me to get it right. Lots of trial & error.\n- - - -\nExperiment with which unit is in front of the other. It made a difference in my system.\nAlso, experiment by putting the analog components on one unit and the digital components on another.\u00a0 Perhaps another experiment with each of the units on a different household circuit.\nMore to discover\nEquitech vs Furman Balanced Power Con...\nFurman IT Reference 20i PC price diff...\nFurman solves ground loop issue?\nFurman IT Ref 20i - Hums/Buzzes\nFurman Power Factor Pro r\nRSX MUSIC SERVER RSX MUSIC SERVER\nAyon Audio S-10IIxs\nVandersteen Model 2c ii signature\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Puritan 156 and Furman","url":"https://forum.audiogon.com/discussions/puritan-156-and-furman"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193413-112139\nEdit\nWHICH POWER CONDITIONER IS BETTER PASSIVE OR ACTIVE WITH ISOLATION TRANSFORMERS\nLooking to purchase a Power Conditioner to reduce the noise floor in my system as well as to protect my system from electric spikes. The two types of conditioners seem to be as follows:\nPassive conditioners such as an Audience AR-12 T4 which claims that passive conditioning with the use of chips\u00a0is the way to go because their filtering is better accomplished without the use of\u00a0isolation transformers. The proponents of passive seem to claim that the use of isolation transformers\u00a0adds noise to the components in the chain.\nActive or non passive-An example would be the Niagra 3000, 5000 &7000 by Audioquest which all use\u00a0Isolation transformers to accomplish the filtering. Most of the conditioners I see advertised seem to accomplish filtering with the use of isolation transformers.\nMy question is what type is better and why? Any recommendations would be appreciated. My budget is $4000-$5000.00, would consider used, a/k/a pre-owned.\nThank you for your input.\nkjl1065\n03-01-2025  2:45pm\n26 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nPost removed\nMar 01, 2025\nrsf507\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,596 posts\n03-01-2025 at 04:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPassive all the time. I've heard many transformer based conditioners and every time I've heard a reduction in dynamics. Others claim this isn't the case but listen for yourself.\nzlone\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,431 posts\n03-01-2025 at 05:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou left out regenerators like the PS Audio. After trying Furman and Puritan, their P15 had a positive effect on my system.\ncarlsbad2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,036 posts\n03-01-2025 at 08:29pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou can\u2019t filter noise out of a power signal. Neither.\nNotice that nobody shows an oscilloscope picture of the electrical output other than regenerators.\nnonoise\nDetails\nDiscussions\nPosts\nThis discussion\n11,226 posts\n03-01-2025 at 08:41pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'm glad this came up. I've always been in the camp that passive conditioning is the way to go, just filtering out the noise on the line. Every time I got new equipment, it always sounded better on my Niagara 1200 passive conditioner so when I got my Technics SU-G700M2 I used it that way for some years now, unit yesterday.\nIt was just out of boredom from going through the last stages of weird cold (I'm on the 22nd day but feeling much better) that I decided to try out my integrated straight into the wall AC with everything else plugged into the Niagara.\nIt was some kind of audio epiphany. More airy, clearer, tighter and defined with better frequency extension and increase in soundstage with absolutely no downsides. My Marantz Reference PM15S2 integrated was no slouch but still benefited from the Niagara. Whoever designed the power supply in the Technics should be given a raise. I can't believe the sound I'm getting from a $3,000 integrated.\nSuffice to say, it largely depends on the gear you're using as all power supplies are not made the same. I live in an old apartment with old wiring that had noise on the lines that went away when using the Marantz on the Niagara but hindered the performance of the Technics on the Niagara, so you'll need to see about getting a loaner and trying it out with the gear you have. Good luck.\nAll the best,\nNonoise\ncarlsbad2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,036 posts\n03-01-2025 at 10:30pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@nonoise\nThis is not the first instance Ive heard of the Niagra limiting current to an amp.\nAnd I fully agree it depends on the gear.\nnonoise\nDetails\nDiscussions\nPosts\nThis discussion\n11,226 posts\n03-01-2025 at 11:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@carlsbad2\nIt's strange but I've read that and finally experienced it. Before the Marantz, I had a Kinki integrated that sounded the same no matter the configuration but the Marantz just couldn't cut it on it's own.\nAll the best,\nNonoise\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n03-01-2025 at 11:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019m not really onboard with the definition. In all other situations I know of, active means powered. That power is being used in addition to the input and output. Isolation transformers by this definition are still passive.\nThe PS Audio power regenerators are very much active. Furman with LiFT is active.\nPersonally, I prefer voltage regulation over isolation. Day in, day out, winter and summer it keeps the voltage at my gear solid.\nFurman with AR (auto regulation) plus SMP\nfor surge suppression is really hard to beat at a great price point.\u00a0 Of course, you can also get Furman with AR, SMP AND isolation... but that's above my budget.\ncarlsbad2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,036 posts\n03-02-2025 at 02:05am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@nonoise\nI agree, it is hit and miss how each amp works with power supplies.\u00a0 And it can be the opposite of what you think.\u00a0 I have a 14 lb, 2 wpc tube amp that is very sensitive.\nJerry\nmark200mph\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n909 posts\n03-02-2025 at 02:52am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAll i know is i had more power spikes this wk and all the power filtering systems worked and saved my equipment including the monster 2000 +7000.the furman 20i\u00a0 is nice cuz it has big capicators to help the transients in the big monoblock amps. They could rob me of some clarity but it's like a timex that takes a licking and keeps on ticking.i don't have to pay 500$ shipping them off to get fixed.the niagra has the magic tube that I think is a capicitor for transients.watch the interview by upscale audio on upscale audio site. I'm sure my amps sound better plugged directly into the wall but I can't afford it.i do like the gadgets on the ps 20.it would be nice for you to go to a dealer and try stuff out crutchfield will let you do it.the bug spray dude fell over and lost controll of his spray nosel we heard the loud crash as his big 10 gallon can hid my grandkids toys.then 3 hours latter the ge surge protector was like the wizard of Oz and lit up.called the. The next day and the manager came and evaluated the situation.the next day got full page denial letter stating they are trained not to spray outlets. And the outlet would have char on it if thaT truly happened.they fun it by thier genius electrician. Moral of the strory.do it yourself.they must have not looked at the outlets cuz 3 had ionizationation from arc .it was soaking wet.off to the fire arsonist\u00a0 I go.good luck with your search and keep the pesticides sprayers away from your outletts.\njeffbij\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n273 posts\n03-02-2025 at 04:13am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@kjl1065\n+1 on the Regenerators.\u00a0 I have very noisy, high distortion incoming power with significant voltage swings.\u00a0 I bought a PS Audio PP12 and it made a world of difference, better than Furman I was trying out.\u00a0 Everyth","title":"WHICH POWER CONDITIONER IS BETTER PASSIVE OR ACTIVE WITH ISOLATION TRANSFORMERS","url":"https://forum.audiogon.com/discussions/which-power-conditioner-is-better-passive-or-active-with-isolation-tran"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192569-149985\nEdit\nTweeters with or without fluid?\nHappy New year to all and all the best in the new year. Looking for all the input out there on the question that tweeters with a cooling fluid or no fluid. The benefits and the drawbacks thank you to all who respond.\ndickface\n01-01-2025  1:57am\n13 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ngdaddy1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n549 posts\n01-01-2025 at 07:36am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNo fluid at all!\u00a0 Ribbons are much faster. Catchy nickname btw.\nlarryi\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,674 posts\n01-01-2025 at 08:24am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe main function of the fluid is to cool the voice coil of the driver by transferring heat to nearby structures. \u00a0The fluid can also act to damp the motion of the coil/diaphtagm.\nThe main downside is that the fluid will dry out in about 15 to 20 years. \u00a0With some drivers, the gummy remsins of the gluid can be cleaned out and replaced eith hew fluid. \u00a0I have not done this so I don\u2019t know what that entails, but you can look it up by googling speaker ferrofluid.\nknotscott\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,430 posts\n01-01-2025 at 02:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFerrofluid can help flatten the impedance curve and reduce Fs and diaphragm excursions, but each design is different and handles those potential issues differently, so it\u2019s use isn\u2019t universally advantages.\nI changed out the FF on my 30 year old Seas domes a few years ago, and it made an audible improvement after.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n01-01-2025 at 02:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt\u2019s fallen pretty much out of favor. The biggest advantage today is higher power handling, which for home listening is usually not a big concern. I doubt most home tweeters ever see more than 3 W honestly.\nOne big disadvantage is that it dries out and gums up the magnet cavity and voice coil requiring replacement AND cleaning.\nLike\n@knotscott\nsaid, if your tweeter was designed for FF you definitely need to maintain it as intended.\nHere\u2019s a good article on the subject\n.though I don't necessarily agree that all tweeters should have some.\nLike every other type of technology buzz word, take it with a grain of salt and evaluate the finished product, not the buzz words.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n01-01-2025 at 04:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNot exactly a scientific poll, but of about 160 tweeters available at Madisound only about 30 advertise the use of ferrofluid.\ndickface\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15 posts\n01-01-2025 at 04:33pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThank you for your thoughts on this, I was only aware of the fluid drying out. Never realized it was a maintenance item, not surprised to hear pros and cons of no fluid or with.\n@erik_squires\nSir you are magical at your explanations I quite enjoy this forum and you are one of the reasons I keep reading.\u00a0 Thank you again to everyone. I wish for everyone here on audiogon, a happy, healthy and musical filled 2025.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n01-01-2025 at 06:27pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@dickface\n- Obviously your mileage may vary, but search DIYaudio and you\u2019ll find lots of discussions about cleaning out old tweeter voice coils with dirty or gummed up ferrofluid. That\u2019s the only reason I know about this.\nI don\u2019t know however how much better a certain brand or model of modern FF using tweeter is vs. the early days, but certainly some top brands still have a couple of models which rely on it, and they also tend to be high power versions, which given how efficient the modern tweeter is, really are for very high output systems.\nkennymacc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n747 posts\n01-02-2025 at 01:38am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFunny.\u00a0 This post is like a time warp.\u00a0 I haven't heard anyone mention anything about fluid filled tweeters on 15 or 20 years.\u00a0 Ferrofluid-filled tweeters?\u00a0 Beautiful.\nmulveling\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,475 posts\n01-02-2025 at 02:06am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou don\u2019t see \"ferrofluid cooled tweeter\" advertised much anymore, except in cheaper speakers. Being a big Tannoy fan - this topic is intresting to explore in the 2000s era Tannoy lineup, where they used ferrofluid tweeters in the \"tulip\" DC drivers (lower lines and pro lines) and no-fluid compression chamber / horn tweeters (\"pepperpot\" DC - dry coils) in the upper half of their top Prestige line.\nI have a few of both kinds, and though ferrofluid tweeters are defnitely out of fashion now, those Tannoy ferrofluid tweeters still do GREAT. Haven\u2019t had a problem with one yet, and their treble response actually tends to be a bit smoother and more extended than the pepperpot one. However, the latter DC lends its magic in the midrange, and with its massive efficiency.\nAt some point I'll have to check on them and clean / replace the fluid, but frankly that seems pretty easy. The magnetic gap will hold it in place.\nhasmarto\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n252 posts\n01-02-2025 at 02:31am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI believe Vandersteen still uses ferrofluid in the tweeters of their 2 and 3 Signature speakers.\nquincy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n487 posts\n02-20-2025 at 12:48am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe tweets in my Kef speakers use Ferro fluid. Yep, it dried out . I cleaned and replaced the fluid. Tweets now sound like new. I did a post on this subject a few years ago. So far so good!\njmera\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n35 posts\n02-25-2025 at 03:14am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe choice between tweeters with or without cooling fluid (usually ferrofluid) depends on what you're looking for in terms of sound quality, durability, and application.\nTweeters with ferrofluid have better heat dissipation, which helps prevent overheating and improves their lifespan. They also handle more power and tend to have smoother performance because the fluid dampens unwanted resonances. However, ferrofluid can dry up over time, which can affect performance, and some audiophiles feel it slightly reduces sensitivity and detail in high frequencies.\nTweeters without ferrofluid don\u2019t have to worry about fluid drying out, and they often sound more open and natural, especially in high-end audio setups. They can also be more efficient since there\u2019s no damping. On the downside, they don\u2019t handle heat as well, which can lead to more distortion at high volumes and potentially a shorter lifespan.\nIf you\u2019re using them in a high-power setup like a home theater or PA system, ferrofluid tweeters are usually the better option. If you\u2019re into high-end critical listening and want the purest possible sound, non-ferrofluid tweeters might be the way to go. For general home audio or car speakers, either can work, but ferrofluid tweeters ","title":"Tweeters with or without fluid?","url":"https://forum.audiogon.com/discussions/tweeters-with-or-without-fluid"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193448-198816\nEdit\nCV2493 Tubes, can't find any info\nJust got my new preamp today (new to me, 8 yrs old). It uses two 12AX7's and two 6922's. The AX7's that came with it are Mullard KQDD/K 4004's. The 6922 spot has two Mullard Gold Pin CV2493's which are also numbered 7614 with KB/QDD codes. I can't find any info on the 2493's anywhere. 7614 or CV2493 is not shown in my tube tester guide, which is very old. Are these something newer? I'm sure they must be a variant of 6DJ8/6922 but I can't find any with the numbers that I have. Anyone know them? Thanks,\nBill\nbillpete\n03-03-2025 10:07pm\n8 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nyogiboy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,232 posts\n03-03-2025 at 11:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHere ya go!\nDescription\nMullard CV2493 | CCA | ECC88 | CV2492 | 6922 | 7308 Mitcham Made Military Spec Dual Triode Preamp Tube\nnoromance\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10,536 posts\n03-03-2025 at 11:47pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nhttp://www.r-type.org/exhib/abs0003.htm\nhttps://www.radiomuseum.org/tubes/tube_cv2493.html\nbillpete\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n396 posts\n03-03-2025 at 11:50pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks yogi\nI thought you'd show up with an answer. Do you know if these are a later designation? Not in my book for some reason. My book is probably from the 50's. maybe 60's. The tubes don't look new but I don't know either. The codes might indicate a date but I can't find any info. I didn't see any of them anywhere, which seemed odd to me. Going to give them a listen very soon. Time to test the new toy. I'm sure all the Mullards should be good. Hope so, I don't think I have any other variants of these but I might. Never had a piece that used them before.\nbillpete\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n396 posts\n03-04-2025 at 12:02am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nnoromance\nThanks a lot. Great info.\nyogiboy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,232 posts\n03-04-2025 at 12:16am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf there are no date codes there is no way of knowing how old those tubes are! Here is some info about Mullard!\nhttps://www.youtube.com/watch?v=GDvF89Bh27Y\nbillpete\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n396 posts\n03-04-2025 at 01:09am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou guys are amazing. Thanks\nInteresting video, what a process. Incredible amount of work into each valve or tube. Hard to imagine it being profitable but I know it was. Lots of automation but still a tremendous amount of tedious work too. I especially like the point that \"even left handed people could to it: :) I was surprised at how often bare skin came in contact with the various components. Lots of heat, some acid baths, maybe that takes care of it. Interesting anyway. Now, I know how to make my own. :)\njond\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,109 posts\n03-04-2025 at 04:28am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThose are great tubes man I have a pair in my Dac and love them.\nbillpete\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n396 posts\n03-04-2025 at 03:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks guys. Nice to hear an upvote and great info.\nMore to discover\nCV2493 Tubes, can't find any info\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"CV2493 Tubes, can&#39;t find any info","url":"https://forum.audiogon.com/discussions/cv2493-tubes-can-t-find-any-info"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n179246-109462\nEdit\nNew Jupiter Comet and VitaminQ Silver PIO Capacitors\nHas anyone tried the\u00a0Jupiter Comet and VitaminQ Silver PIO capacitors?\nHow do they compare to Duelund Silver Bypass capacitors?\nRegards,\nAlex.\nalexberger\n08-23-2022  5:27pm\n11 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\npdreher\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,253 posts\n09-17-2022 at 08:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nbumping as I'm curious too.\noddiofyl\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,644 posts\n09-19-2022 at 08:28am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy Toolshed Amp has some Jupiter caps in it and it's matching preamp I am having built will also have some Jupiters in it too.\nCan't tell you how they compare but Matt at Toolshed is a fan of Jupiter and his amp sounds incredible..\nalexberger\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n958 posts\n09-19-2022 at 03:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@pdreher\nI ask about new Jupiter - Comet Silver and VitaminQ Silver series.\nRegards,\nAlex.\nPost removed\nSep 07, 2023\nPost removed\nSep 15, 2023\nPost removed\nFeb 01, 2025\nkeithefox\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10 posts\n02-25-2025 at 02:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nJust saw this,\nI have been meaning to post about Comet and vitamin Q silver PIO caps.\nI replace them in my line stage coupling position (comet), and output (comet /vitaminQ paralleled.\u00a0 Preamp is a very nice Jadis jp200 mc ..\u00a0 This swap was not cheap as the amp uses .47 uf and 1 uf in the positions.\nThe results were\u00a0 worth it though,.. these jupiter caps are the only ones I have ever tried that have this level of resolution , yet still retain a completely natural presentation.\u00a0 They are more natural sounding to me than duelund ( which I like their copper cast).\ntecknik\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n493 posts\n02-26-2025 at 11:26am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nKeithefox\nDon\u2019t be afraid to try a silver mica, I\u2019ve tried a few and the best so far is the Charcroft silver micas and after a long burn in for a mica 200 plus there amazing especially compared for the cost I\u2019d a Dueland silver bypass.\ni currently have the Matsuzaki case type 0.0056 on order, the glass types are ok but so far the Charcroft for a fraction of a Dueland are amazing especially in your application and don\u2019t get me wrong I love the Dueland silver bypass\u201d I currently run 6 in diff. Places.\nkeithefox\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10 posts\n02-26-2025 at 01:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAs far as Duelund goes, i prefer jupiter comet or vit Qsilver PIO, even given their cost as they sound more natural to me.\u00a0 I do however like duelunds speaker crossover inductors, I replace a alphacore copper foil with a duelund recently in my first order series crossover for my big altec clone horns and ,....wow amazing sense of space , resolution ,\u00a0 timing.. they are not THAT pricey either, littel bit more that twice the alpha cores.\nalexberger\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n958 posts\n02-27-2025 at 11:09pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe Duelunds speaker crossover inductors 1.5mH pair (for my Altec 604E n1500 crossover) will cost $750 WAX and $700 Cust. Not cheap.\u00a0The Jantzen Wax Coil that I use now cost me just $150.\nI use a Duelund silver bypass in the same crossover to bypass the 14uF capacitor. But I think Duelund silver has some little kind of brightness.\nI like the Soviet silver mica SGM-3. They are really great.\nkeithefox\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10 posts\n03-01-2025 at 03:50pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have heard good things about the silver mica as well, might try as a bypass in my crossover.\nMore to discover\nProblems replacing electrolytic capac...\nRipple current Q for amp capacitors\nReplacing capacitors for my ARC VS110\nNEED HELP WITH A MIRAGE M1 CROSSOVER-...\nBest Capacitors for Crossovers\nAurender N100H\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"New Jupiter Comet and VitaminQ Silver PIO Capacitors","url":"https://forum.audiogon.com/discussions/new-jupiter-comet-and-vitaminq-silver-pio-capacitors"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193383-2244\nEdit\nTampa Audio Show 2025\nI skipped last years show mainly because I didn\u2019t like the hotel they were in before and the prior show wasn\u2019t that good overall. This year there were some very very good sounding rooms with some very expensive equipment, $1M+ in price. There were quite a few very good rooms with very reasonably priced equipment too like the Orchard room and the multiple Borreson rooms.\n\u2018But there were a lot of rooms with expensive equipment that sounded very bad. Some bad enough to leave in less than a minute, some we waited for a couple different songs to play to see if it was just the song. In all cases, it wasn\u2019t the song causing the issue. In some of \u00a0these rooms, the bass sounded terrible, overly rich sounding, distorted, some just over powering the room. Some of us thought a couple of speakers blew out their tweeters they sounded so bad. A couple of these bad sounding rooms had the darling speakers of the audio mags with prices north of $170k. I\u2019m curious if the audio mags will call out these bad sounding rooms like they did a couple,e years ago at axpona, or give us the rooms sounded very good to not bash any manufacturer.\nrbstehno\n02-27-2025  3:47am\n4 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nbaylinor\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,671 posts\n02-28-2025 at 12:53am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt always goes back to it's all about the room, regardless of the price of the equipment.\nShort of trying equipment in your own listening room, a lot of time will be wasted in\u00a0 evaluating equipment in other rooms, regardless of the audio show.\nnoromance\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10,536 posts\n02-28-2025 at 02:13am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nLarge, expensive speakers are never going to sound good in a deluxe hotel bedroom.\nrbstehno\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,653 posts\n02-28-2025 at 03:41am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFor home systems, I agree. For hotel rooms, yes and no. There were a half dozen rooms that sounded excellent. These rooms had some of the largest speakers at the show. A couple systems cost close to $2M. These large speakers had some of the bigger rooms. Other bigger speakers in appropriate sized rooms sounded like $&!$.\nOther rooms were smaller but the dealer brought larger speakers that sounded terrible. This is the dealers fault. Then there were many rooms that were on the smaller side but they brought size appropriate speakers and they sounded very good.\nI bought a pair of speakers that I heard at rmaf and couldn\u2019t be happier. I knew what their potential sound was and I knew in my room they would sound even better, and they were\nnoromance\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10,536 posts\n02-28-2025 at 08:09pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThere\u2019s nothing quite as amusing as seeing $20k 2\" thick power cords hanging out of an 80 cent receptacle behind the plastic ficus.\nMore to discover\nTampa Audio Expo 2022\nNew Regional Audio Show in Tampa Feb ...\nLooking for audiophile friends in Tampa\nTampa Audio Show 2025\nTurntable cartridge installation in T...\nFocal 36 MONTH FINANCING\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Tampa Audio Show 2025","url":"https://forum.audiogon.com/discussions/tampa-audio-show-2025"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n131814-20042\nEdit\nDoes anyone use hearing aids when listening to your hi-fi audio system?\nYeah I just got hearing aids and I am feeling very old. Six years total time in Air-defense artillery and Field-artillery with the Army has ruined a band of my mid to high level frequency hearing.\nDoes anyone else out there listen to your hi-fi audio system with your hearing aids? What are the disadvantages? Does it make the experience any better? Pros and cons?\n2psyop\n10-12-2017  6:06pm\n10 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nelevick\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,640 posts\n10-12-2017 at 07:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI went through this with my dad.\u00a0 Hearing loss is not equally distributed.\u00a0 There's a couple of options that help.\u00a0 You can go with mono and just lose some imaging.\u00a0 Another option is headphones-you would most likely want a headphone amp with a balance control and skip the hearing aids.\nFinally, keep in mind that what you end up enjoying may sound \"off\"\u00a0 to someone without your disadvantages.\u00a0 Audio can sound great but this might be more of a very personal experience.\nlloydc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n779 posts\n10-12-2017 at 08:33pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI sometimes do. Cymbals otherwise have no shimmer, and so forth.\u00a0 A hearing aid is an equalizer matched to the curve of your hearing loss, for each ear, with some extra processing (admittedly, some compression.)\nInexpensive aids won't do.\u00a0 Mine are adjustable out to 10 mhz and have 4 eq curves, including one which is uncompressed.\u00a0 Few of them adjust anything above 8 khz.\nI rationalized the $6K cost in part by considering them a component of my hifi system.\u00a0 Not ideal, but what can you do if you have a big dip in your hearing in the typical 2-4 khz range?\u00a0 Which, I suspect, considering their average age, most audiophiles do.\nnonoise\nDetails\nDiscussions\nPosts\nThis discussion\n11,226 posts\n10-12-2017 at 09:50pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nLike you, @2psyop, I have hearing damage from shooting guns in my adolescent days and although I scored 100% on word recognition, I have trouble hearing normal conversation in a noisy setting like a restaurant. All the consonants like\nch, sh, ng, th\n, etc. tend to smear and are at a lower level than the rest of conversation. It\u2019s right around the 3Khz level where my hearing drops well below the rest of what I can hear. Anyone who\u2019s gone shooting without ear protection, just once, will have this deficiency and never get it back. Once, broken.....\nI find I don\u2019t need hearing aids since the drop starts from 2Khz and continues slightly after 3Khz area and my brain, such as it is, easily makes up for it. The only downside is a loss of shimmer, air and presence with some music in that area.\nGranted, you\u2019ve had years of abuse from your service but I think you can work around it all unless your tests show that the damage is more severe than what I think you have. I wish you the best on this.\nOne thing I\u2019ve found is that ribbon tweeters go a long way towards restoring some of that lost area of hearing. When I had speakers with them, everyone thought my system was a bit too bright but it sounded fine to me.\nAll the best,\nNonoise\n2psyop\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,944 posts\n10-13-2017 at 12:52am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks for the response and tips. Interesting notion thinking of your hearing aid as part of your hi-fi (lloydc). Another thing, I did spend much of my time on the firing range, and back in the 80\u2019s not too much hearing protection was provided or thought of .. as a safety net for hearing...like today in the US Army. Although I am not whining or finding fault at all. Guess like all things I will get used to them even though they still make me feel old!\npsag\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n518 posts\n10-26-2017 at 10:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nlloydc, what make and model?\nlloydc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n779 posts\n11-20-2017 at 08:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\npsag, I have Oticon Intiga 10 hearing aids.\nThe newer aids have faster processors and software.\ngeorgehifi\nDetails\nDiscussions\nPosts\nThis discussion\n10,312 posts\n11-20-2017 at 09:26pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n2psyop\nIf my hearing got to a point of questioning it, I\u2019d be selling the expensive speakers and amp, and getting the best headphones and headphone amp I could get.\nCheers George\njbuhl\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,112 posts\n02-16-2018 at 10:38pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThis is fairly recent so I will post for posterity. I have classic Noise Induced Hearing Lose (NIHL) also known as Noise Notch. One of the most significant losses are transient like cricket chirp frequencies. I remember when I first got my Oticon aids I was getting ready for bed one summer night and the windows were open and the crickets were at full chat. I pulled out my aids and my heart just sank. The crickets literally just vanished. :( As I type this I am listening to a tune that has what sounds like claves and if I pull out my aids the claves become significantly veiled (Thick curtain is more like it). Now the tune has changed to percussion that has brushes and without the aids the brushes are gone, sad. If I cup my hands around the back of both ears, like grand paw, the brushes return but not as clear as with the aides. I have 4 program settings that can be programmed. #1 is normal settings targeted to aid my loss, #2 is set to cull out background noise and focus on the sound coming directly at me.#3 is wide open. #4 is turned down to a lower volume and I try that setting when listening to music. My audiologist said she would come to my house and program them while I listened to my system. When I crank the volume I take them out. My version were about $3k When you jump up to higher end models ($4K-$6k) you get many more sophisticated program options and features like mobile device control apps and blue teepher. I got the $3k model cause that is what my insurance will pay. I highly recommend getting a pair if you have hearing loss and especially if your insurance covers them, but be warned they take some getting used too and some noises will cause you to rip them from your head like the continuous clacking of a Mazzer dosser being used in a busy coffee shop or someone hitting a spoon against a saucer as they eat. Thank god for the mute setting. I just wish I had used them when auditioning my speakers. Let me tell you people, if you like live concert music or exposed to any loud noise, for gods phuck\u2019n sake, take measure to protect your hearing or risk losing one of the greatest gifts of existence.\nmapman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23,710 posts\n02-16-2018 at 11:06pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOnly if cry'od.\nSeriously, not me....at least not yet.\nmark200mph\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n909 posts\n02-27-2025 at 04:06am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThank you for your service.my brother did 2 tours in iraq.he got s","title":"Does anyone use hearing aids when listening to your hi-fi audio system?","url":"https://forum.audiogon.com/discussions/does-anyone-use-hearing-aids-when-listening-to-your-hi-fi-audio-system"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193052-2625\nEdit\nAUDIO RESEARCH SP-10 MODIFICATIONS\nI'm looking for a old school Audio Research Repair Person ???\u00a0 \u00a0 I have a very fine Audio Research SP-10 two piece pre-amp that Steve Huntley has pretty much messed up and need someone with Special Audio Research experence to put it back to its original fine design, instead of some dream of betterment......It would need to be that special technition .......Please if you don't have special or direct information about these SP-10's don't respond.............THANKS\nautospec\n02-05-2025  3:36am\n8 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nbdp24\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10,509 posts\n02-06-2025 at 12:13am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@autospec\n: Good point about after-market mods done by those who don't fully understand the stock design, and the reasons the designer did what he did. Roger Modjeski of Music Reference regularly received in for repair amplifiers of his which had been butchered by someone replacing perfectly fine parts with inappropriate ones. Inappropriate in terms of those parts not performing in the manner the circuit in which they were installed required.\nautospec\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n521 posts\n02-06-2025 at 12:59am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBDP24:\u00a0\u00a0 Very well put, Most people don't understand the intermingling of components,les they be good or bad , expensive or cheap..........I need a old school Audio Research technician like Chris from the old days, but Chris is gone to.............\nwhart\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,406 posts\n02-06-2025 at 04:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDoes the manufacturer still service these? I had an SP-10mkii that went back and forth to ARC when WZJ was still around. We tried gel tube sockets to minimize microphony- didn't work; and the factory hot rodded it per something that HP discussed- I can't remember what was bypassed in the hot-rodded version. To me, this model was the height of the original tube preamp era for ARC. There have got to be schematics for the unit, no? And some restoration shops could follow those. I think Audio Classics (or whatever that used McI shop is called) restored a Marantz 7 for somebody on SH forums who bought a unit which suffered a gutted \u00a0phono stage that had been replaced with solid state circuitry; the shop restored the unit to original design.\nautospec\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n521 posts\n02-06-2025 at 06:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nwhart:\u00a0\u00a0 The problem is Audio Research does not have the time to work on something that Steve Huntley messed up, and I am qualified to work on it but I don't have the time either ..........I build tube amplifiers and I have about 10 orders now, so I don't have time............Will\nwhart\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,406 posts\n02-07-2025 at 12:28am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTry Audio Classics- they do sell used ARC and I know they had a lot of work to do on that Marantz 7, which had been bastardized. They won't be cheap. Bill Thalmann, who did a fair amount of pieces for me, passed, sadly. Good luck, the SP-10 has a well deserved place in the history of tube preamps, though a tad microphonic.\nautospec\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n521 posts\n02-07-2025 at 01:51am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI think I'll give it a couple days and if I can't get something going on it I will just sell it to someone who has the time and money to repair it.............It does work, just not real good and a couple people ask to buy it...........Will\ntecknik\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n493 posts\n02-26-2025 at 11:40am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou\u2019re the first person I\u2019ve known or read about that Steve Huntley screwed something up, Steve has had a stellar reputation especially with AR gear\u201d Steve used to work for AR years ago. I met Steve at Haven and Hardesty in Huntington Beach Calif. years ago like back in the late 80,s I believe and had a AR SP 8 tricked out by him.\nsomething doesn\u2019t add up here but wish u luck.\nautospec\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n521 posts\n02-26-2025 at 07:13pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSir:\u00a0\u00a0\u00a0 I am the largest collector of Audio Research in the USA, and I will tell you for a fact that Steve Huntley has screwed up a lot of Audio Research Equipment, so much the they will not work on or repair anything that he has messed up........and there was a reason why he left............\nMore to discover\nReview: Townshend Audio Speaker Podiums\nAudio Note Kit 3 AMP\nRecent Evaluation of the Home Audio S...\nWalker Audio Silver jumper vs Nordost...\nAudio Matiere/Audio Sculpture\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nVandersteen Model 2c ii signature\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"AUDIO RESEARCH SP-10 MODIFICATIONS","url":"https://forum.audiogon.com/discussions/audio-research-sp-10-modifications"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193298-112139\nEdit\nPLUG AMPLIFIER INTO POWER CONDITIONER OR INTO WALL RECEPTACLE\nLooking to purchase the Niagra 3000 Power Conditioner by Audioquest. This conditioner has 2 outlets for hi current components such as a power amplifier. This use is specifically mentioned in Audioquests advertising. I have a Bryston 4B3 cubed power amp which is rated at 300 watts per channel into 8 and 500 into 4. I am planning to plug my amp into one of the 2 hi current outlets. Yet, the conventional wisdom suggests that power amplifiers should go directly into the wall. I live in Long Island and I believe the power is not that clean. This is one of\u00a0 the reasons for purchasing this product in the first place. I would be nervous plugging the amp into a standard wall receptacle, which leaves me unprotected.\u00a0 Any suggestions would be appreciated.\u00a0 \u00a0Thank you.\nkjl1065\n02-21-2025  4:39pm\n8 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nstereo5\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,728 posts\n02-21-2025 at 04:41pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt is designed to work with high current amplifiers, I would plug it in to the Niagara.\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n02-21-2025 at 04:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nInto the wall. I have tried high end power conditioners made specifically for high current / amps and they still sounded notably better plugged directly into the wall. I have also tried a high end audio distribution box also claiming not to restrict the current... it also did so.\nrsf507\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,596 posts\n02-21-2025 at 05:06pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nListen both ways but over the years I've tried many so called hi end conditioners and when an amp was plugged in I heard slightly limited dynamics plus other artifacts. There are other things that can affect this but again I'll repeat...listen and see if you hear a difference.\nbigtwin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,626 posts\n02-21-2025 at 07:18pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAs there are only two choices, the obvious correct answer would appear to be, try both and see if you hear a difference.\u00a0 IMHO, the opinions of other members, including mine, have little or no value in these situations.\u00a0 Your system, your ears, your choice.\u00a0 Cheers.\nozzy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n7,835 posts\n02-21-2025 at 10:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI own the AQ 7000 and several 1200\u2019s and one 1000.\nInto the 7000 I have plugged Michi 8 mono blocks. Now these amps can output something like 1800 watts per channel. I have tried the amps directly into the wall outlet and to me, I noticed no degradation plugging them into the Niagara. They actually sound much better.\nWith the AQ 1200\u2019s I am using 4 JL F-113 subs with 2 of them plugged into each 1200.\nOriginally, I just had the front subs plugged into a AQ 1200 and the rear subs were plugged into a wall outlet. Sure, enough disaster struck with fluctuating voltages during a storm and the 2 subs plugged into just the outlet were damaged. The 2 plugged into the AQ 1200 were ok. So, that\u2019s when I bought another 1200.\nThe AQ 1000 is used for my Video equipment.\nAnyhow as what\u2019s been already stated try it both ways, but I bet the AQ 3000 will not miss a beat.\nozzy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,218 posts\n02-22-2025 at 12:33am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI tried many over the years via lending library at CableCompany, every single one impacted transients to some degree. This vs 20amp 10AWG dedicated line just for amps/subs. Dedicated line to PC same 20amp, 10AWG. At that time I was running Cary SLM100 mono blocks and Art Audio Carissa Signature 845SET amps. Even with little 300B mono blocks mostly running these days present modified BPT 3.5 Signature blunts transients to some degree, this through it's dedicated amp circuit. Also, keep in mind with most if not all PC's its likely amp outlets pathway not going through entire PC circuit so you're conditioning is being limited in some way.\nmattmiller\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,620 posts\n02-22-2025 at 02:51am\nCopy Comment URL\nReport Comment\nEdit\nDelete\ni THINK YOU NEED A pOWER sTATION....No im not kidding!\nhttps://www.richardgrayspowercompany.com/products/substation/\ncorelli\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,203 posts\n02-22-2025 at 12:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNot sure on size fits all.\u00a0 You will just need to try it.\u00a0 But, I would guess that efficient Class D amps with less current draw might work well with a conditioner where large Class AB amp such as yours might be restricted?\nMore to discover\nNeed power amp suggestions for ProAc ...\nFlexible Power Cords\nCLASS A POWER RATINGS\nMating power cords with APL 3910\nWhich mono power amp would you choose...\nBricasti M5\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAurender N10\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"PLUG AMPLIFIER INTO POWER CONDITIONER OR INTO WALL RECEPTACLE","url":"https://forum.audiogon.com/discussions/plug-amplifier-into-power-conditioner-or-into-wall-receptacle"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193227-181782\nEdit\nTube Tester settings for PX-25 tubes\nanybody have settings for testing a PX-25 tube on a Hickok 534A?\nor know where to find them.\nthanks,\nJerry\ncarlsbad2\n02-17-2025  5:18pm\n1 response\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nPost removed\nFeb 20, 2025\nMore to discover\nArt DJ Pre II Settings Help\nAyre Phono P5xe settings low / Med / ...\nArcam rPhono Settings for Elys2\nNeed help with Soundsmith Hyperion MK...\njriver settings advice\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAuralic Aries G2.1\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Tube Tester settings for PX-25 tubes","url":"https://forum.audiogon.com/discussions/tube-tester-settings-for-px-25-tubes"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n157827-125761\nEdit\nCrimping Furutech FP203R spades\nHi All,\nQuick question; Have any of you crimped Furutech FP203(R) spades, what did you use for a crimping tool?\nThanks for any input, these are very nice spades, heavy duty! My Klein rachet crimpers are no match for the FP203(R) spades.\nscratcha\n06-13-2020  8:31pm\n17 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\npetg60\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,486 posts\n06-14-2020 at 12:16am\nCopy Comment URL\nReport Comment\nEdit\nDelete\ni you don't solder then a hydraulic press is needed for 203 & 209\nmitch2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,780 posts\n06-14-2020 at 01:02am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYes, a lot of them and I used this (below) for $60 at Harbor Freight.\u00a0 It worked great.\nhttps://shop.harborfreight.com/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/6/6/66150_I.jpg\nscratcha\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n164 posts\n06-14-2020 at 01:50am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks for the quick replies.\nI am going to check out the hydraulic crimper at Harbor Freight.\nmillercarbon\nDetails\nDiscussions\nPosts\nThis discussion\n12,531 posts\n06-14-2020 at 03:02am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nUse TC. For less than the cost of a crimper it will sound better even if you use ordinary pliers. Heck you could whack it with a hammer and do better as long as you get some TC in there.\nscratcha\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n164 posts\n06-14-2020 at 10:22am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks MC,\nWhat do you refer to as \"TC\"?\nIs that a bonding enhancer or sealer?\nThanks\noldhvymec\nDetails\nDiscussions\nPosts\nThis discussion\n5,101 posts\n06-14-2020 at 11:56am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTotal Contact.. enhancer. good stuff..\nI use small amounts of Nuclear Never Seize. Nickel/silver/Gl paste,\nworks good also.. Don't over do it..\nRegards\nauxinput\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,924 posts\n06-14-2020 at 03:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI haven't done the hydraulic press thing (I didn't look for a tool).\u00a0 I do know these FP-203 spades are impossible to crimp with normal tools.\u00a0 I have always used the FP-201 spades instead.\u00a0 They have screw-down clamps to hold the speaker wire, and you can still apply solder through a hole at the top.\u00a0 Just make sure you use a larger 2mm tip and crank the heat up to max (like 450 degree C).\u00a0 Be patient because it takes a little bit for the spade to heat up (it's a giant heat sink).\nscratcha\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n164 posts\n06-15-2020 at 01:06am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks for all the input,\nI'm going to look into Total Contact, also.\njakesnak\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n176 posts\n09-17-2020 at 12:36pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have all Furutech outlets and S032. I soldered all the spade connectors.\ncknd_cnnl\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9 posts\n01-27-2025 at 10:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAnyone has still more tips on this? Specifically from shops in EU?\nmitch2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,780 posts\n01-28-2025 at 12:30am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSame answer as in June of 2020. It looks like the link from then expired but\nthis\nis the same tool I linked previously and still use, and it is not too expensive. Amazon has quite a few different models\nhere\n. Still using with those crimped FP203 spades, for probably around 10 years now, and and they still holding up just fine.\u00a0 However, I wouldn't argue with soldering them.\ntomic601\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n13,758 posts\n01-28-2025 at 12:39am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBelt and suspenders; a simple battery cable lugging tool - Anchor sells one - u use a hammer. Advise a bit of silver contact enhancer and solder.\nAlso\u2026 i believe as many ( but not all ) that lower mass spades sound better and w reasonable binding post pressure will result in a gas tight connection\u2026\nymmv\npalasr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n544 posts\n01-28-2025 at 01:30pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nhttps://tinyurl.com/yey4am9c\nAmazon link for what I used on them.\u00a0 You need leverage.\ncknd_cnnl\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9 posts\n02-18-2025 at 07:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI bought the hydraulic crimper for the Furutech spades. When crimped the barrel moves between the left and right opening. The crimped barrel looks like my drawing with flat pressed sides.\nDoes this happen with yours also\n@mitch2\nEdit: I tried to upload a pic but I can\u2019t figure out how.\nmitch2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,780 posts\n02-18-2025 at 08:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHard without a picture but the result is hexagonal, the same shape as the dies. \u00a0There may occasionally be a bit of the spade material that squeezes into the edges where the two die pieces come together but I have never had a crimped spade come apart or fail in any other way. \u00a0The end result should look sorta close to the Cardas forged connection.\ncknd_cnnl\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9 posts\n02-19-2025 at 09:31pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThis is my drawing:\nhttps://d2ikyu8xyuibjx.cloudfront.net/original/4X/5/b/4/5b4b6ff2eee623f0311f24b5a33febc1b6227d71.jpeg\nmitch2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,780 posts\n02-20-2025 at 03:22am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou may be using too small of a die for the wire/connector that you are crimping.\nCheck out\nthis video\nthat provides some guidance on selecting the die size as well as showing what a finished crimp should look like.\u00a0 You may consider practicing on a few throw-away pieces to get the hang of things.\u00a0 Good luck.\nMore to discover\nCrimping Furutech FP203R spades\nCrimping tool?\nQuestion about using scrimping cable ...\nCrimping bare speaker cable connections\nWBT Spades -- Crimping needed??\nRSX MUSIC SERVER RSX MUSIC SERVER\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Crimping Furutech FP203R spades","url":"https://forum.audiogon.com/discussions/crimping-furutech-fp203r-spades"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193226-112139\nEdit\nLOOKING TO IMPROVE THE ACOUSTICS OF MY LISTENING ROOM\nI am looking to improve the acoustics of my listening room located in Nassau County, New York. I have installed drapes, an area rug and not sure how to proceed further. Do I need absorption, diffusion, tube traps in corners? Not sure of any of\u00a0 this. I am looking for someone to come to my music room and help me. I believe I need an acoustic engineer who has the knowledge to show me what objectively needs to be done to meet my goals. Willing to pay a reasonable hourly for advice. Many audiogon members have stated that if the listening room is deficient, changing equipment will not be the final answer.\u00a0 \u00a0Thank you.\nkjl1065\n02-17-2025  3:39pm\n27 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nnoromance\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10,536 posts\n02-17-2025 at 03:45pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhat\u2019s wrong with the room? Or, are you reacting to what you\u2019ve read?\nCreate a\nVirtual System\nwith photos to give a better idea.\nkjl1065\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n89 posts\n02-17-2025 at 04:13pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTook a picture of my system with my i phone and could not create the virtual. Was really looking for someone to meet with me and maximize my room. There is science to this and I believe there is no substitute for someone with technical knowledge to help me. Trying myself, putting tube traps in corners, absorption panels here and diffusers there is only guessing and trial and error at best.\u00a0 \u00a0Thnak you.\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n02-17-2025 at 05:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'd give another try to create a virtual system. I is easy. I see you have Created a Virtual System... only with contents empty. It would be very helpful for us to see it and know all your components. You probably do not need an engineer... although there are always folks ready to do so.\ntoro3\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n525 posts\n02-17-2025 at 05:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThere\u2019s so much variance in rooms and their acoustics - I can understand why you\u2019d like in-person technical advice (I have no suggestions). In light of this, you could spend some time submitting the free GIK Acoustic Advice form found\nhere\nwhich may point you in the right direction. I\u2019ve found that there recommendations are a little heavy handed in respect to absorption and level of panels, which seems to lean towards pro studios vs \u201cnormal\u201d shared listening environments. Members here may disagree with this last statement.\nAn acoustic engineer or someone competent and experienced in listening spaces would of course be ideal - and something that would have been greatly beneficial for me as well (historically and currently).\nbdp24\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10,509 posts\n02-17-2025 at 06:09pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHere's a video on the topic of the acoustic treatment of listening rooms that Danny Richie of GR Research posted on YouTube just yesterday:\nhttps://youtu.be/rKhcABvL7tc?si=NpH3zZ5TIdjXHFbD\nmashif\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n505 posts\n02-17-2025 at 07:48pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGiven your location, you might look for a Pro Studio designer who can create a specific plan for your room. GIK is a good online resource and has quality products but every room is unique and an experienced designer can take your budget and customize a solution.\nrick_n\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n491 posts\n02-17-2025 at 10:19pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nVery smart question from someone who is doing it the right way.\u00a0 I was in the same place as you.\u00a0 I was starting a listening room from scratch and a dealer recommended treating the room first and then working out the equipment.\u00a0 Best advice I ever got.\nThe dealer worked with Viacoustic and sent my room specs to have recommendations made.\u00a0 Viacoustic came back with a comprehensive, fully modeled schematic to optimize the room.\u00a0 I followed the guidance and was very, very pleased with the results after installing treatments.\nMoney well spent that gave me confidence that spending hard earned money on electronics will yield the best possible return.\nMy best advice is don't half-ass the room treatments, get professional help, then enjoy your room.\u00a0 I'm not all that far from you and if you would like a tour of my room hit me up.\u00a0 Good luck and cheers.\nbaylinor\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,671 posts\n02-18-2025 at 01:37am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n\"The room can make or totally wreck a system\" discussion posted by hilde45 today\nay be a good way to start.\natp001\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n26 posts\n02-18-2025 at 04:19am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have two 2-channel systems, one with flexibility in placement of components (dedicated listening space), the other inflexible (living room).\u00a0 I was not happy with the sound in either space.\u00a0 In my listening room, I played extensively with speaker placement and ultimately settled on a location that sounded best.\u00a0 But it still didn't sound right, lacking the tight bass I was used to, and fatiguing when I look back.\u00a0 I decided to invest in Dirac Live (via MiniDSP) and wow, what a life changer.\u00a0 Best money I ever spent in audio, like a veil being removed from the music.\u00a0 Thousands of dollars spent on an audio system cannot guarantee good sound if your room isn't up to the task.\u00a0 I experienced all the benefits advertised by Dirac.\u00a0 I am now onto my third MiniDSP unit, for my HT.\natp001\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n26 posts\n02-18-2025 at 04:27am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI should have added that one of the negative aspects of the MiniDSP in my setup is that I no longer play any of my DSD files because Dirac only processes PCM.\u00a0 But the incredible improvement in sound I obtain with Dirac far surpasses any theoretical advantages that DSD brings to the music.\nskiznfliz\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n72 posts\n02-18-2025 at 12:26pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhat would really help is to know what exactly are you experiencing sound wise in your room with your system. I have corner bass traps at my ceiling corners and (2) GIK Absorption Panels on the wall behind my listening sofa. I also made sure to have some absorption material behind my system to absorb rear reflections due to the size and shape of my room. Carpet on the Floor, Thick Drapes and almost nothing that has a reflective surface to it as well. I had to correct a 50hz Bump that was sending havoc in my SQ all the way up to 100hz\u2026Finally ended up replacing my Maggi\u2019s to CUSTOM Built Soundfield Audio MMW-1\u2019s that incorporate DSD and was able to tune the speakers to my acoustically treated room. At this point and not to sound prejudiced, but I and numerous audiophiles who\u2019ve come to check out my system at a recent audiophile society listening session event hosted at my home felt it was one one the be","title":"LOOKING TO IMPROVE THE ACOUSTICS OF MY LISTENING ROOM","url":"https://forum.audiogon.com/discussions/looking-to-improve-the-acoustics-of-my-listening-room"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193011-20253\nEdit\nImpedance - The most ignored and useful measurement tool\nI\u2019m constantly reading about audiophiles diagnosing their speakers or attempting to mod their crossovers with expensive new parts. The one tool I wish they\u2019d all get and rarely do is an impedance graphing tool. These are either nearly free or affordable.\nThey let you produce impedance charts like Stereophile does, as well as measure capacitors and inductors with ESR/DCR respectively.\nIn the nearly free variety\nyou can build one and use Room EQ Wizard.\nIn the\naffordable is the Dayton Audio V3\n. Either one does an excellent job of measuring a driver, crossover parts and the entire speaker as well. Completely irreplaceable tools.\nDiagnosing your speakers with the help of others on the internet is made so much easier when you have one of these. Even if your speakers are fine, measure them and keep the charts handy for when they do go bad, it will make it much easier to understand what is and is not working. Replacing a cap/coil? Measure them and the speaker before and after when you are done to make sure everything came back together properly.\nYou\u2019d be surprised how many speakers have a woofer or tweeter that has stopped working but the listeners don\u2019t even realize it.\u00a0 These are immediately visible problems in the impedance plot.\nOf course, it's just a tool, but when a driver goes bad, or a solder joint fails the impedance charts will go wildly off track.\u00a0 It's up to you to dig in and diagnose further.\nerik_squires\n02-02-2025  3:30pm\n29 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ncarlsbad2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,036 posts\n02-02-2025 at 06:46pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGreat post @erik_squires.\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,218 posts\n02-02-2025 at 08:40pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNot sure enough people understand how impedance phase angle affects matching of amp to speakers, too many look at only sensitivity.\nre-lar-kvothe\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n186 posts\n02-03-2025 at 02:12am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@sns\n+1 The first spec I look for in an amp: is it 2-ohm stable; second is wpc. I want it to be able to drive ANY reasonably priced speaker with difficult phase angles and deep dips in impedance.\nbruce19\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n387 posts\n02-03-2025 at 04:01am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nInteresting! Kudos to you\n@erik_squires\n. Is there extra functionaity in the Dayton piece that makes it worth it. I already have REW but have not used it for this. In fact, I was not aware of this capability.\namtprod\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n140 posts\n02-03-2025 at 06:37am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@erik_squires\n!!!!!!!\nBeen reading thru fathers electronics text books on impedance, and studying in regard to speakers, wire, input/output, etc.\u00a0 Your post is perfectly timed and really well stated!!!\nhilde45\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,101 posts\n02-03-2025 at 11:43am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI was talking about this yesterday with\n@decooney\n-- the usefulness of knowing speakers' impedance loads. We were discussing how much class A power would be optimal for speakers.\nhilde45\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,101 posts\n02-03-2025 at 11:47am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNot sure enough people understand how impedance phase angle affects matching of amp to speakers, too many look at only sensitivity.\n@sns Great point.\nIn both the case of Fritz's speakers and my others, Ascends, the builders (Fritz and Dave Fabrikant) wrote to me and explained about the kindness of the phase angles in their designs and how their speakers would work with a wide variety of amps without much trouble. On the other hand, when I was auditioning some other speakers, a couple years ago,\n@tvad\nhelped me realize that the Focals were not sounding great because of a terrible, sharp dip down to 3ohms. I could not have understood it without the phase angle concept.\nbdp24\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10,509 posts\n02-03-2025 at 12:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAll of Danny Richie's (GR Research) loudspeaker evaluations include impedance measurements.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n02-03-2025 at 01:40pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIs there extra functionaity in the Dayton piece that makes it worth it\nTo be honest I have only used the DATS V2 and really love how well and easy it is to use, I\u2019ve not tried the REW, but if I recall it requires you to use 2 audio channels at once?\u00a0 I'm not sure.\nIt\u2019s really a matter of convenience. Also, AFAIK DATS is Windows only, so if you are a MacOS only home REW is your only option.\nThere are other professional impedance measurement tools, BTW, these are just the two least expensive I know of.\nlanx0003\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,051 posts\n02-03-2025 at 02:14pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nInteresting to note negative resistance measure (shown in light green) in REW chart (from the link provided).\u00a0 What does it mean, or how do you interpret it? Do you know?\nknotscott\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,430 posts\n02-03-2025 at 02:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGreat post!\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n02-03-2025 at 02:31pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@lanx0003\nSuggest you hit up the very active REW forums! but I believe that's not negative impedance, it's phase angle.\u00a0 Ask in DIYaudio for help with that, but it's related to how capacititive or inductive an impedance is.\u00a0 These cause the current and voltage to be out of phase compared to a resistor.\nlanx0003\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,051 posts\n02-03-2025 at 03:22pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNo, it is clear the lower curve corresponds to all negative impedance at some positive and some negative phase angles.\u00a0 But I do agree that negative impedance implies the voltage and the current are out of phase.\u00a0 No idea what causes it though in practice.\u00a0 Will reach out to other communities.\u00a0 Thx.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n02-03-2025 at 04:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@lanx0003\nWell, you have taught me something new.\u00a0 I've been at this a long time and just today realized there was such a thing as negative impedance.\nddlux\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n11 posts\n02-03-2025 at 10:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI thought the dark green line is impedance as measured in ohms per the left hand scale; and the light green line is phase angle as measured in degrees per the right hand scale.\nrichardbrand\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,544 posts\n02-03-2025 at 10:46pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@erik_squires\nI've been at this a long time and just today realized there was such a thin","title":"Impedance - The most ignored and useful measurement tool","url":"https://forum.audiogon.com/discussions/impedance-the-most-ignored-and-useful-measurement-tool"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n185990-169390\nEdit\nWhat is the science behind audiophile fuses?\nThere were many threads on the topic of \"audiophile fuses\" on this forum, and I sure don't want to open old wounds and trench warfare. The fuse on my preamp blew suddenly two days ago, which prompted me to search for a replacement. That's when I came across the term \"audiophile fuse\" and the fact that they demand far-out prices. Deeper curiosity brought me to several other fora, where users posted glowing praises about their Zero fuses and other exotica. Now I am a scientist, but not a physicist or electrical engineer: so please enlighten me! How can a fuse have an audible influence on the signal, when the signal does not even pass through it? How can a fuse be \"directional\" when it deals with alternate current? I mean, if I recall my university physics, a fuse is basically a safety valve and nothing more. Am I completely missing an important point here? My scientific field is drug discovery, and because of this background I am thoroughly familiar with the power and reality of the placebo effect. I that's what I am seeing here, or is it real physics? I need objective facts and not opinions, please. I really appreciate your help!\nreimarc\n08-19-2023  1:12am\nNext \u203a\nLast \u00bb\n236 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nmitch2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,780 posts\n08-19-2023 at 01:51am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCans have been opened, worms are out, let the games begin\u2026\nthecarpathian\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,296 posts\n08-19-2023 at 02:01am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWho wants hot buttered and who wants kettle corn? \ud83c\udf7f\nthecarpathian\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,296 posts\n08-19-2023 at 02:12am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have never used an audiophile fuse so I can't comment on them either way.\nBut, I believe the forthcoming answers will be long on opinion and short on objective facts.\njaytor\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n781 posts\n08-19-2023 at 02:13am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nKettle corn for me please.\nnonoise\nDetails\nDiscussions\nPosts\nThis discussion\n11,226 posts\n08-19-2023 at 02:17am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIs Vegas taking bets on this?\nfuzztone\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,651 posts\n08-19-2023 at 02:21am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI guess there is no science. Please pay in gift cards.\nvonhelmholtz\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n911 posts\n08-19-2023 at 02:30am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAre you con-fused?\nmitch2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,780 posts\n08-19-2023 at 02:55am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIs it too early to bring up double-blind testing?\nimhififan\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,260 posts\n08-19-2023 at 03:55am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAre you sure you want to know?\u3299\u26a0\nhttps://y.yarn.co/c4ec072e-c625-\n4941-90a2-f322734e0533.mp4\nroxy54\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,245 posts\n08-19-2023 at 04:23am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhere's\n@jasonbourne52\njasonbourne71\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,904 posts\n08-19-2023 at 05:18am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAudiophile fuses are flying saucer science!\njasonbourne71\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,904 posts\n08-19-2023 at 05:20am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe flying saucer people have abducted jasonbourne52!\ncleeds\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,635 posts\n08-19-2023 at 12:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nreimarc\nThere were many threads on the topic of \"audiophile fuses\" on this forum ...\nThose threads are still there. You might want to read a few.\nPost removed\nAug 19, 2023\nknotscott\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,430 posts\n08-19-2023 at 03:14pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThat's a fair question that I can't answer from experience.\u00a0I would have been very interested in an actual informed answer if anyone can offer one.\u00a0 May just have to do some searching and reading if I truly want to know.\njetter\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,165 posts\n08-19-2023 at 03:29pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIn the history of all fuse threads, and correct me if I am wrong, there has never been a straight answer regarding how the special audiophile fuses work from a manufacturer (spell check roxy54) or retailer.\nAmong those answers by users, as interpreted by myself:\nA billion volts are shot through the fuse wire before assembly.\nA thicker fuse wire is used.\nA much higher quality (better conductivity) fuse wire is used.\nSomehow graphene enters the picture.\nA liquid or other dampener is used in the fuse to prevent fuse wire from vibrating.\nMore conductive fuse end caps.\nCan\u2019t remember any others.\nIt is not disputed that they certainly have gained favor by users.\nmapman\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23,710 posts\n08-19-2023 at 04:18pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOp congrats in that it sounds like you got a good handle on the topic. \u00a0Having seen it all here, why \u00a0one would come to this site \u00a0for science on the topic beyond what is readily available elsewhere is beyond me however.\nNothing more to see here. \u00a0May the force be with you!\nhilde45\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,101 posts\n08-19-2023 at 05:46pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhere\u2019s millercarbon when you need him? I can already picture him riding in on Shadowfax to defeat the dark enemies and doubters of the audiophile fuse.\njetter\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,165 posts\n08-19-2023 at 05:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAmnesia has mercifully aided in my forgetting who that person is you mentioned immediately above.\nHowever, I will take this moment to remember the true champion of the audiophile fuse, and while I may not have agreed with him, I much liked him.\u00a0 I am speaking of a true credit to this website, Oregonpapa.\nraysmtb1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n831 posts\n08-19-2023 at 07:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBack one money was harder to come by, when the system wasn\u2019t flooded with it and people actually worked hard for it they were less likely to spend money on stuff like audio file fuses along with many other products. There\u2019s so much money out there people throwing around on stuff just because they\u2019re bored. It\u2019s absolutely the placebo effect.\ninvalid\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,390 posts\n08-19-2023 at 09:38pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf fuses don't make any difference then why did most of the high end amp manufacturers stop using rail fuses, it's definitely not to save money.\noddiofyl\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,644 posts\n08-19-2023 at 10:09pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI think the Swiss Fuse Box sounds like it h","title":"What is the science behind audiophile fuses?","url":"https://forum.audiogon.com/discussions/what-is-the-science-behind-audiophile-fuses"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193200-1301\nEdit\nLinlai 845, Elite vs Acme vs DG sound\nI know this is a difficult one to answer, but in YOUR experience, what's the sonic differences between the Linlai Elite, ACME and DG? With all the quality issues that Psvane seems to have, I've decided not to gamble on them.\nIt's for a Mastersound 845 Compact\naudiojan\n02-15-2025  2:29pm\n1 response\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,218 posts\n02-15-2025 at 05:36pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDon't use my 845 amp much anymore, but have always been happy with my Shuguang Black Bottle Treasures from early 2000 tens. Not up on reliability of tubes you mentioned but I've had issues with 101D Linlai Elites and Psvane WE version of this tube, present two Psvane 101 no problems at nearly 300 hours. Grant Fidelity quit carrying these tubes due to reliability issues, Psvane Acme 300B's no issues over around 700 hours. Never had a single Shuguang tube failure in any amp or pre, but then these not premium tubes in most models.\nMore to discover\nExperience with Linlai WE845 or Elite...\nLinlai 12AU7 ????\nLinLai WE 300B or the LinLai Global E...\nLinlai 845, Elite vs Acme vs DG sound\nLinlai E 6sn7 tubes\nAyon Audio S-10IIxs\nVolumio Primo Plus\nFocal 36 MONTH FINANCING\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Linlai 845, Elite vs Acme vs DG sound","url":"https://forum.audiogon.com/discussions/linlai-845-elite-vs-acme-vs-dg-sound"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193098-17600\nEdit\nTransformer Hum\nI noticed a hum coming from my Hegel H200 a couple weeks ago. Hadn't noticed anything like this in the 3-4 years I've owned it. Really quiet but in a totally quiet room, audible. I've done some rewiring in the basement recently to hard wire a sump pump but that's all I could figure. Did a bunch of reading about transformer hum and also contacted Hegel who told me it was probably DC offset causing it. So I went on Amazon and bought an iFi Silent Power DC Blocker. Just received it today and placed it between my H200 and the power cable and.... noise gone. Silence. Just thought I'd add my experience to the Encyclopedia Audiolactica.\nmaprik\n02-07-2025  9:18pm\n4 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\njond\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,109 posts\n02-08-2025 at 01:55am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPerfect result that's what DC blockers should do and obviously in your rewiring somehow some DC got on the line glad you got it solved!\ntestpilot\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,020 posts\n02-08-2025 at 12:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDC on the main line can mysteriously appear and disappear. \u00a0Glad you figured it out.\nallears4u\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n198 posts\n02-14-2025 at 12:14pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI tried same device to eliminate last mm of my humm but to no avail. turned out I simply needed no power tubes since mine were old and mismatched causing my auto bias Raven Audio integrated to struggle unsuccessfully to accomplish ifs job. Sometimes the cure just is staring you in the face everyday.\nallears4u\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n198 posts\n02-14-2025 at 12:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCORRECTION: \"New Power Tubes\"\nMore to discover\nCan I trash this damn transformer? PL...\nHalo A51 transformer hum...Need power...\nDistortion mystery -- MC cart mistrac...\nNeed to be educated re: MC Step-up tr...\nStep Up transformer\nAurender N10\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Transformer Hum","url":"https://forum.audiogon.com/discussions/transformer-hum-4"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n1151167933\nEdit\nBest Solder??\nI need to replace some speaker terminals. Can anyone suggest a solder type and/or brand? Thanks\n06-24-2006  4:52pm\n21 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\n42659\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n77 posts\n06-24-2006 at 09:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nJohnson IA-423 is the best sounding solder I have experience with. Lead free with a high silver content, 6.4%. Much perfer it to the WBT and Cardas solder.\nhttp://www.johnsonmfg.com\nJohnny\nhotsauce\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n108 posts\n06-26-2006 at 04:11am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf you really want to find out what different solders sound like, make a run with it as speaker wire, thats about the only way to A:B test it.\nPart of the question should also be the best way to solder. If you just place a wire in a loop or tag strip and solder it then the solder is a bridge between the 2 parts, and very much in the path. The better way is to put the wire through the loop then wrap it tightly, so much so that the solder almost becomes redundant to the connection.\nwebmaster5a1c\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n12 posts\n07-03-2006 at 08:17am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI use WBT solder for my speaker prototypes. Works great ,sounds great, and has a low melting point so it cools off looking nice and shiney, i.e. no cold solder joints. G. Garfield\npiedpiper\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n753 posts\n08-01-2006 at 04:25am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNever done a direct comparison but many prefer Wonder solder which is what I use.\nangaria\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n35 posts\n08-02-2006 at 12:46am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nApplication question: I need to solder the super thin tweeter wire from a SEAS millenium back on to the main contact. SEAS contact info is down... is there a prefered type of solder for this job?\nThanks.\naudioman58\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,646 posts\n06-21-2011 at 09:38am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have worked with lots of solders including wonder WBT , Eichmanns 5% .the Johnsons is 6%\nbut I feel they Mundorf Supreme 5% Slver and Gold solder\ngives the most natural sounding balance.\nmagfan\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,583 posts\n06-23-2011 at 04:32am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf a proper mechanical connection is made, does the solder really make that much of a difference?\ntpreaves\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,690 posts\n06-23-2011 at 01:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI don't think solder has a \"sound\",but hey, what do I know.\npaulsax\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n275 posts\n06-23-2011 at 09:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTpreaves: dont feel bad, I'm still trying to figure out why it's not spelled sodder.\njohnss\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n689 posts\n06-24-2011 at 10:46pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nRja,\nI would be careful with some of the \"audiophile\" solders. Some have pretty corrosive flux in them. IF you dont clean it all off, will eventually attack the joint.\nIn one of our audio club meetings, we had one demo where we tried different solders. They do make a very big difference, bigger than I would have thought. The other thing is you need to have a good mechanical connection over time.\nwe ended up picking Kester 63/37 with a 285 flux as the preferred choice. 63/37 is also eutectic, which most others are not.\nelviukai\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n135 posts\n07-01-2011 at 08:24am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMundorf supreme 9.5%silver 4% Cu, and 0,1% gold- its melts very good with stock soldering iron, with soldering station 460'C even more. it \"sounds\" smooth comparing comapring with WBT for example. its good or bad depends on system.\nliguy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n228 posts\n07-01-2011 at 07:34pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThis thread reminds me of something that happened in my senior year of engineering school. My room mate's brother was an audiophile. He was having trouble with one of his speakers and asked if I would have a look. He had purchased these speakers 2nd hand and I pulled out the crossover board on the offending speaker and plainly seen that someone had been inside the speaker before and modified the crossover. The modification was a real hack job and I found many cold solder joints. I simply broke out an iron and some trusty Kester lead free and reflowed the bad joints. I reassembled the speaker and gave the speaker back to my room mate to give back to his brother telling him I just had to resolder some joints. I recieved a note from his brother thanking me for the repair and using that special solder. He continued by saying it was a marked improvement over the working speaker and asked if I could use the special solder and resolder the joints on the second speaker for him. I just shook my head, kept my mouth shut and laughed.\nsingleendedsingle\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n664 posts\n07-02-2011 at 12:58am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have used Kester 24-7068-7063 for repairs and Diy. Rosin Activated 96.5% Tin 3% Silver 0.5% Copper\nroxy54\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,245 posts\n07-02-2011 at 03:07am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nJeff at Sonic Craft (who knows a lot about this stuff) advised me to use Cardas Eutectic solder. He gave me reasons why it was better than the Mundorf and others, but I can't remember what they were. I think it had something to do with the amount of silver content and also long term corrosion. Call him.\naudioman58\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,646 posts\n07-16-2011 at 07:39am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI had My Rogue 99 Super Magnum -Se preamp built completely with the Mundorf Supreme solder which I found out is 9% pure silver 1%gold and 3%Copper and then the standard tin mix.It is the best solder on the market and complement my Mundorf silver gold oil capacitors,even the Hifi tuning Supreme fuses which are superb and the new rave were designed with this exact Supreme Solder.\njimc555\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n30 posts\n08-19-2011 at 03:46am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFor me it's WBT.I have a lifetime of experience with soldering in High-End Audio. The Quality of sound shows up big-time on interconnect terminations RCA and XLR. UnGodly exspensive and\nworth every penny.I have not yet tried Mundorf Supreme.\nI found out the hard way one time when I ran out of WBT and used Kester Silver solder. Not the same, in any Audio application.\nzmanastronomy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n738 posts\n08-19-2011 at 12:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWBT 4% siver. Perfect.\nprogrammergeek\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n322 posts\n08-22-2011 at 12:22am\nCopy Comment URL\nReport Comment\nEdit","title":"Best Solder??","url":"https://forum.audiogon.com/discussions/best-solder"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193093-17262\nEdit\nBeen out of HiFi for awhile and looking to get back on a budget - Power Conditioner Ask\nI used to use a BPT 3.5 Signature in my set up and was very happy. Present circumstances don't allow for the same outlay. Are there other options which would get me 70,80, 90% of the performance of the BPT balanced conditioner for less? I am looking at Equi=Core 1000 or an Equi-Core 1800 V1 used for around $700. Does anyone have familiarity with a product offered by Antek? Their model BP-1300 uses a balanced torroidal transformer, 4 outlets, weighs in over 30# and can be had for only $300. Is anyone familiar with these and can speak to how they would compare with the BPT 3.5? Any other suggestions?\nsempaul\n02-07-2025  5:40pm\n4 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nmattmiller\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,620 posts\n02-07-2025 at 10:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSo you say you've been out of HI-Fi for a while? And the first thing your asking about is a Power conditioner? I say Dump it! Ive never used a power conditioner nor will I start any time soon after 40 years of having stereo systems of all SQ levels. Any decent systems amplifiers are going to have fully regulated power supplies so it makes me laugh when I see people spending a lot of money for these conditioners that literally rob the life out of your systems sound!\nMatt Miller\nditusa\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,474 posts\n02-09-2025 at 12:45am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@mattmiller\nMike\nsteakster\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,220 posts\n02-09-2025 at 02:40am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHere\u2019s a BPT\nat only $200 for local pickup in Forest Hills, NY. When looking for affordable pre-owned audio equipment, visit\nHiFi Shark\nI\u2019ve got two balanced power conditioners - one is for the streaming chain in another room, the other is in my main system for the source components - not the amp. Definitely improves the SQ.\nsempaul\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23 posts\n02-12-2025 at 09:41pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThat baby sold in a day. Clearly that one was a good deal.\nMore to discover\nLooking to better my redbook action....\nLooking for opinions on Cambridge DAC...\nLooking for An Excellent TT?\nNOT a high end request!  Looking for ...\nAny good looking Home theater/couch s...\nFocal 36 MONTH FINANCING\nAuralic Aries G2.1\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Been out of HiFi for awhile and looking to get back on a budget - Power Conditioner Ask","url":"https://forum.audiogon.com/discussions/been-out-of-hifi-for-awhile-and-looking-to-get-back-on-a-budget-power"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n177673-8481\nEdit\nAudioMagic Fuses Bad Quality I Do Not Recommend!!\nBought the AudioMagic Premium Fuses, now it\u2019s starting to fall apart. \u00a0 I called Jerry@AudioMagic but stated it\u2019s passed the 30 days. \u00a0 Very Disappointed!\nzipost\n06-04-2022  3:56am\n20 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nrsf507\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,596 posts\n06-04-2022 at 04:55am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhat do you mean\u00a0it\u2019s starting to fall apart?\njasonbourne52\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,863 posts\n06-04-2022 at 09:14am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAnother victim of the fuse swindlers! Stick to Buss/Littel fuses and save your money!\nthecarpathian\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,296 posts\n06-04-2022 at 11:14am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nA fuse assumably in its holder is starting to fall apart??\nHow exactly?\nbartholomew\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n89 posts\n06-04-2022 at 12:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nhttps://forum.audiogon.com/discussions/i-m-in-love-with-betty\ntablejockey\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,431 posts\n06-04-2022 at 02:33pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAudiophool defusing is remedied by purchasing good components/speakers\u00a0 setup appropriately with realistic expectations.\ntony1954\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,321 posts\n06-04-2022 at 07:36pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhat is the world coming to, when scam artists can't even have the decency to use a quality fuse to make their $225 Premier Bees Wax Super Fuse.\nbrauser\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n532 posts\n06-05-2022 at 02:04am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nJust to put my two cents in...I have used Audio Magic cables and conditioners for many years and have had nothing but positive interaction with Jerry.\nzipost\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n199 posts\n06-05-2022 at 06:28am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe end caps are falling apart, you can see stuff gushing out and i don\u2019t know if it\u2019s even safe? \u00a0Just bad craftsmanship!!\nclearthinker\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,582 posts\n06-05-2022 at 09:27am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nA FUSE IS A FUSE IS A FUSE IS A FUSE\nJust pay your 20c.for a normal standard properly built fuse, mass produced in their millions.\nYou can paint it red if it makes you feel better.\nrsf507\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,596 posts\n06-05-2022 at 01:25pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf \"stuff gushing out\" I'd not be using the fuse, sounds like a hazard waiting to happen. Call the company and show pics and inform them if a fire happens you will file a law suit, that should make them replace the fuse for you.\nthecarpathian\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,296 posts\n06-05-2022 at 04:41pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHow much 'gush' can be in a tiny fuse?\ntwoleftears\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,371 posts\n06-05-2022 at 04:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe nano-liquid can get everywhere because, well, it's nano.\ntsacremento\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n68 posts\n06-05-2022 at 05:05pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSo, the liquid's coefficient of expansion exceeds that of the glass and metal, forcing the fluid out when the thing heats up? Great engineering.\nthecarpathian\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,296 posts\n06-05-2022 at 06:10pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWho in the blazes thinks it's a good idea to insert something full of liquid inside a piece of electronic gear??!\nteo_audio\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,197 posts\n06-05-2022 at 06:29pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt's Jerry... the perennial IP theft machine the highest order.\nThis hack has been selling dangerous fuses since the dawn of modified fuse times.\nNot surprised that he made something dangerous and..illegal. as in 'not certified for resale'. As it messes with the AC power section of a piece of hardware.. which, by definition, REQUIRES full testing and approval by agencies of the us federal government or it's appointed offices. After testing the approval must be prominent upon the given item that is for sale and for use in the direct AC power pathway.\nAC fuses, AC power sockets, AC power switches, AC intended and utilized wiring, etc, all require government analysis, and applied testing (if deemed necessary), before gaining approval for sale to the public. One cannot just sell anything AC power related to the public, all willy-nilly.\nthecarpathian\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,296 posts\n06-05-2022 at 09:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhat purpose can that liquid possibly serve??!\nIf it's an electrolyte, it defeats the purpose of the fuse. That's just madness I tell you! Madness!!!\ntwoleftears\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,371 posts\n06-05-2022 at 10:37pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBeeswax will ooze much more slowly than liquid, which is surely a good thing.\nThis photo comes from this thread.\nhttps://forum.psaudio.com/t/caveat-emptor-about-the-audio-magic-ultimate-premier-beeswax-fuse/16141\nPost removed\nJun 05, 2022\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,311 posts\n06-08-2022 at 01:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBig ripoff.\naudioxcel\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n12 posts\n02-11-2025 at 10:18am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI bought 5 Audio Magic fuses about 20 years ago.\u00a0 I used one in my amp and one in my preamp.\u00a0 The rest have been just sitting in their boxes.\u00a0 This week I looked at at the fuses that I had not used.\u00a0 None of them still had any \"nano\" fluid in them.\u00a0 Where did it go?\u00a0 How did it disappear?\nMore to discover\nBest quality connection from Network ...\nRecording quality by decade\nTruly High Efficiency, High Quality, ...\nTo get best sound quality, roon or lu...\nWill increasing size of amp improve s...\nAyon Audio S-10IIxs\nAyon Audio S-10IIxs\nAntipodes Audio K40\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"AudioMagic Fuses Bad Quality I Do Not Recommend!!","url":"https://forum.audiogon.com/discussions/audiomagic-fuses-bad-quality-i-do-not-recommend"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193108-2135\nEdit\nDoes a good power conditioner reduce need for power supply upgrade?\nWould like to hear Agoner\u2019s opinion on this topic. \u00a0It appears to me that power conditioning as a part of power distribution role for your whole system, and high end external power supplies designed to either replace and beef up internal linear supplies (e.g. Naim approach) or to replace cheap switching wall warts or internal supplies supporting a single piece of equipment have a similar function, that being to reduce noise without restricting current.\nInterested in what you think.\nknownothing\n02-08-2025  4:54pm\n16 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n02-08-2025 at 05:05pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI don\u2019t think there is any such thing as too much power conditioning. The higher quality the audio component the larger the portion of the component is used for power conditioning... and yet no mater how much better my components have gotten...most are now in the $20K range ... a separate power conditioner still improves the overall system sound, as did direct lines and specialty power outlets.\nMy strategy is always to buy better component versus upgrade the power supply... I would prefer the designer of the equipment choose exactly how to upgrade the power supply versus me buying some off the shelf better power supply. However, on budget equipment I am sure it can be a cost effective means of improving the sound.\nMost high end companies have completely separate boxes for power supplies on their flagship products... for instance Audio Research Reference 10 preamp or phonostage.\nknotscott\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,430 posts\n02-08-2025 at 05:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI tend to deal with both aspects the best I can. A good conditioner should only help, but I can\u2019t say as though it\u2019ll make up for the short comings of a cheap wall wart.\nMy conditioner is a Lightspeed CSL3200. I\u2019ve never done any comparisons, and I haven\u2019t removed it since installing it about 6 years ago, but I have upgraded the wall warts for my modded Bugle 3 phono stage, and my modded SMSL DAC, and both of those upgrades were notable, then I plug those into the conditioner.\nA lot of lower cost components use those cheap wall wart unregulated switching power supplies, but it\u2019s fairly easy to replace them with a linear regulated version with the same specs (many generic versions are under $50), and should always be a step in the right direction....whether you can actually hear it or not, it\u2019s less likely to fail and cause a problem to the component.\u00a0 If you're the type that tries to leave no stone unturned, and you're looking for easy potential upgrades that don't break the bank, I'd recommend it.\nakg_ca\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,479 posts\n02-08-2025 at 06:12pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThink first about running dedicated power lines direct from your electrical panel ALONG with audiophile grade wall receptacles as a best-step-up in audio performance.Add in a panel whole house SIEMENS surge protector at the panel. That\u2019s a separate line for the amp and a second line for your source. It will be far better approach than a Pwr Cond simple plug in .\nThen, ensure your components power cords linked to the anudiophile grade wall outlets are up to the task.\nOk\u2026.sure \u2026.a quality build high-end power conditioner can\nmaybe\nprovide a further smaller further incremental step up, particularly if you have wild power swings experiences in some older buildings.\nok \u2026if dedicated lines are a no-go, then a quality build Pwr Cond might help a bit.\nBut as pointed out in other posts, it\u2019s a summary of the entire cradle-to-grave power supplied to your components that determines your audio performance quotient\u2026.not any Pwr Cond, in isolation.\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n02-08-2025 at 06:25pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n1st, have you seen the wire in the fuse?\nFor years, I used a chain where EVERYTHING that was on was collectively going thru a single tiny fuse, the entire load of amazing crecendos at loud volumes never drew more that that hard to see wire could pass..\n2nd, I thought about my Furman P1800 PF R version\nthat always has 45 amps of current ready for momentary peaks. That means it is the Furman\u2019s Capacitors that are my power plant, always the power source at any moment, not the wall or separate ckt or ckt bkr or street transformer, my own power storage in my rack, for as my fuse proved, is a small need..\nIF you have actual problems, that\u2019s different, but the majority of us solve imaginary non-existant problems, and\nIF there is a rare actual problem, I can do something else for a while.\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,218 posts\n02-08-2025 at 07:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nComponents internal power supplies always matter a great deal, to believe power conditioning somehow negates the need for quality power supplies is fool's gold. Power conditioning and component power supplies serve entirely unique purposes.\nknownothing\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,830 posts\n02-08-2025 at 10:49pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@sns\nI would be interested in any insights or specific information you can provide on how power supply and power conditioners purposes are unique. \u00a0I have a vague idea, but would like to understand more. \u00a0I know power supplies typically convert AC to DC and provide the right voltage and current for the device, but also have some power conditioning functions too. \u00a0That is about the extent of my knowledge.\naudioman58\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,646 posts\n02-09-2025 at 05:01am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt still is very good to upgrade to a \u00a0decent LPS power supplies especially at the starting points\nfor example get rid of the noisy wall wart a $10 piece of junk to the router That just adds more noise.\nglenmschneider\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n107 posts\n02-09-2025 at 12:54pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nLike so many things in this hobby there appears to be no simple answer to power conditioning. And apparently there are various types of power problems that can be addressed.\nmy goto reference for this is live testing done by alpha audio which you can watch where they both subjectively and objectively show that different conditioning devices work better in some situations better than others and in some devices better than others and \u2018conclude\u2019 that the results are situation dependent and you must try the specific devices in their intended places to know if or how much they will help.\nwaytoomuchstuff\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,278 posts\n02-09-2025 at 03:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@sns\nnonoise\nDetails\nDiscussions\nPosts\nThis discussion\n11,226 posts\n02-09-2025 at 04:49pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI live in an older apartment building in a neighborhood with lots of old homes being torn down and repl","title":"Does a good power conditioner reduce need for power supply upgrade?","url":"https://forum.audiogon.com/discussions/does-a-good-power-conditioner-reduce-need-for-power-supply-upgrade"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193114-3028\nEdit\nChinese \"Audiophile\" Fuses\nI have recently had various Chinese \"audiophile\" fuses pop up in my newsfeed. One of the oddest ones claims to reduce resonance by filing the middle part of the fuse with nanographene and the end caps with powdered quartz.. This strikes me as a crazy concept because graphene is an extremely conductive material. How would a fuse that surrounded the wire in the fuse with graphene possibly work? The wire blows but the current still flows though the graphene and my amp self-destructs? WTF\naudioxcel\n02-09-2025 12:04am\n6 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ncarlsbad2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,036 posts\n02-09-2025 at 12:20am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFuses are made of conductive material. that said, I wouldn't trust these to blow at the designated current.\u00a0 I've often thought one of the reasons audiophile fuses sound better is because they are at the top end of the tolerance.\nFrankly, I doubt there is much if any graphene used.\nand nobody ever tests what current they blow at since they are so expensive.\nJerry\nozzy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n7,835 posts\n02-09-2025 at 05:33pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI don't think the fuse blowing protection is the purpose of those fuses.\nProbably sound quality is the goal. In which case just adding a slug instead of a fuse would suffice. That is why I use the SDFB it provides the slug (graphene) and breaker protection.\nozzy\nnoromance\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10,536 posts\n02-09-2025 at 05:47pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@ozzy\nHave you compared the fuse against using only the slug? Does the addition of the SDFB improve the sound? Or is it only for protection?\nrick_n\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n491 posts\n02-09-2025 at 05:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSadly, you usually get what you pay for.\nozzy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n7,835 posts\n02-09-2025 at 06:35pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nnoromance,\nFunny you asked this question. Yesterday, I did run my AQ Dragon power cord directly without the SDFB. Just the graphene slug installed.\nNow to me, it seemed to be better. But I think it is because I am using an inferior jumper pc in the chain. The AQ Dragon power cord is a fantastic pc in its own right.\nI do wish Mark would change the design of the Fuse box to an IEC male on one end so it could be inserted directly into the component, or the other end to have an AC Blade male to plug directly into the wall without having to use a jumper pc.\nozzy\naudioman58\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,646 posts\n02-10-2025 at 04:09am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTo be honest ,in the many tests on fuses yes they do work\nFor chili tuning is a solid choice why ,the higher the conductivity the lower the resistance or noise floor everything goes through the fuses Silver and copper 3x+\nbetterthen tinned brass fuses and up to 20% more accurate cheap fuses can vary or drift , Hifi tuning under$90. Ceramic body and fine sand filled to absorb vibration\nthese have somelogic behind them ,all these Graphene and $250-$500 fuses no thanks Waay to much money Hifi tuning at least from a conductor stand point makes sense VH Audio has all types as well as other brands.\nMore to discover\nWe Need A Separate Forum for Fuses\nAcme silver fuses\nHi-Fi Tunig Fuses &amp; Parasound A21\nPeriodic replacement of Audio Grade F...\nChanging rail fuses inside a B&amp;K ...\nAyon Audio S-10IIxs\nRSX MUSIC SERVER RSX MUSIC SERVER\nAuralic Aries G2.1\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Chinese &quot;Audiophile&quot; Fuses","url":"https://forum.audiogon.com/discussions/chinese-audiophile-fuses"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193061-198816\nEdit\nQuestions about tubes and their subsitites\nHi all.\nI use a Cary PH301 phono stage in my system. I have enjoyed this phono pre for many years. Been tube rolling lately as well as swapping various preamps and also some cartridge swapping, trying to find the best combination with what I have. The Cary PH301 uses 5 tubes, 12AU7 buffer, 2 12AX7 for MM and adds 2 12AU7's for MC. I use Sylvania Gold Pin 5751's in the AX7 spot, I have a Sylvania 5814 in the buffer spot (Cary suggests this replacement in the manual). Question one is why is a 5814 considered a replacement for 12AU7 when their values are so far apart? AU7's have gain of less than 20, 5814's are the same gain as 5751, at 70. Why are the 5814's considered to replace 12AU7? 5751 also is 70 but is considered to replace 12AX7, which is at 100. I don't quite understand the hows and whys of this. Any thoughts? Thanks,\nBill\nbillpete\n02-05-2025  7:43pm\n7 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nyogiboy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,232 posts\n02-05-2025 at 08:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe gain factor of a 5814 and a 12AU7 are the same! Also the 5963 and the 6189 can be used in place of a 12AU7!!\nThe JAN-Philips 5814-A preamp tube type is\nequivalent\nto the common 12AU7 vacuum tube and European ECC82 tube. It can be used in any 12AU7 or ECC82 circuit.\nbillpete\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n396 posts\n02-05-2025 at 09:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFor some reason, I swore I'd read that the 5814 had 70 db gain but I am obviously wrong. It does make more sense now. I have used Sylvania GP 6189's and still have them. I have a pretty fair collection of vintage tubes.\nNext question is alittle more weird. I have a very low output MC cartridge. Fidelity Research FR1MK3F which has .14 mv output. I use an SAEC SUT, which only provides 10db of gain. I have often thought that I'm still a tad low in gain for this cartridge so I tried an experiment. I put a second pair of Sylvania Gold Pin 5751's in the AU7 spots.\nThis obviously provides more gain and to my surprise, it sounded very good to my ears, and to my wife's as well. Everything seemed to sound better than it should. My system has undergone many changes over the past few months as old pieces began to fail and I inserted multiple new (used) pieces into the system and would evaluate each with mostly disappointment and a few pleasant surprises. Things may not be perfect back to where I started but it has become very pleasant to sit and listen. I've gone through half a dozen preamps or more, 2 turntables and several cartridge tries. It's been fun and frustrating at the same time.\nAnyway, the question is this: Am I hurting anything by having 5751's in the Cary where it was designed to have 12AU7's?\nThanks,\nBill\nyogiboy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,232 posts\n02-06-2025 at 12:46am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI doubt that you would hurt anything. But just to make sure you should ask Cary if it is okay to do that. I swap preamp tubes in my phono preamp to lower the gain and I never had a problem. It never hurts to ask the manufacturer!!\nbillpete\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n396 posts\n02-06-2025 at 04:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI am also using lower gain tubes at the 12AX7 spots, using 5751's which are 30db lower than what it calls for. 5751's are often used this way and many favor them, including myself. I have never found any AX7's that sounded\u00a0 better than the various 5751's that I've used, my favorites being the Sylvania Gold pin 3 micas but there have been others that were good such as RCA clear tops and a few others that I've tried were good.\nI've tried a multitude of different tubes in the AU7's spots, including Bugle Boy long plate AU7's, which are considered among the best. In my situation, they were OK but I didn't find them to be \"great\". Many factors involved here, many different preamps etc.I'll give them a try again at some point as I'm on about the 6th or 7th, preamp in this system. The Cary has been used in nearly every situation as I've found nothing better or even nearly as good.\nAt any rate, I'll see what Cary says. I think they recommend against such things but my personal belief is that it is unlikely to actually cause any harm, it's just very curious that things are sounding so good. It's been the best combination I've found with all the reserve pieces that I'm using. My main turntable is down as well as my main preamp. It's been an interesting journey and I've found some pleasant surprises along the way. I shelved this preamp 25 years ago. Loaned it to my son many years back, got it back and tried it after all the pieces that I bought in between. Kind of funny really.\nyogiboy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,232 posts\n02-06-2025 at 05:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have used Sylvania /Baldwin green label tubes and they are outstanding. I am now using GE 12 type and 5751 tubes in all my gear and I won\u2019t be replacing them. I like them a lot!\nbillpete\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n396 posts\n02-06-2025 at 06:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI just got a batch of 5 Sylvania 3 mica 5814's to see what I think of them. I have not tested them yet to make up pairs. After I do, I'll see how they compare to the Gold Pins. I've never really been disappointed by any Sylvania tubes. I have a pretty good collection of Sylvania, RCA, Amperex and others. I do have a fair amount of GE's. I'll have to check to see if I have any of their 5751's but I don't think I do, probably just have AX and AU7's. They were fine when I used them, I just found the Sylvanias more to my liking. I'm sure this stuff varies a great deal from one component to another. I don't think there is any way to make cheap Chinese tubes sound good but I'm sure really good tubes will vary from one component to another.\nAlso, wrote to Cary to see what they have to say about my experiment. I've noticed that for a serious listen (which is pretty loud), I've gone from 12 or 1 o'clock to 11 o'clock on the preamp volume. I may remove the SUT just for kicks to see if it gets better or worse. At 11, with no record spinning, I hear a slight tube hiss so I may be close to where I need to be even with the SUT. Only way to figure it out is to try both ways.\nbillpete\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n396 posts\n02-08-2025 at 06:37pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYogi\nI looked through some of my tubes and found that I have quite a few GE 5751's. I'lll give them a try at some point to see how they compare with the Sylvania GP's. Never heard a word from Cary on my experiment. I have not had the greatest luck with answers from them or others either. VPI was another to ignore me. I have a bearing problem in my HW 19, parked it for now. I did switch it back to the original bearing but have been playing around with some older TT's...........yes, even older than VPI HW 19. An old Lenco and a Micro Seiki. I have others as well....all are old. Still enjoyable.\nMore to discover\nQuestions ab","title":"Questions about tubes and their subsitites","url":"https://forum.audiogon.com/discussions/questions-about-tubes-and-their-subsitites"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n193021-146840\nEdit\nRight channel dead on AR VSI 75\nThe right channel of my AR VSI has no sound. \u00a0I\u2019ve swapped speaker cables with same result. \u00a0Left channel is fine. \u00a0Right channel dead. \u00a0Same result after swapping tubes. \u00a0 Any recommendations? \u00a0Thanks in advance.\nmvrooman1526\n02-03-2025  1:02am\n4 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nnewbee\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,843 posts\n02-03-2025 at 01:27am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDead tube took out resistor in the bias circuit when it crashed? Happens all the time with ARC amps which have no protection in the circuit (and they are not the only manufacturer that does this).\nmvrooman1526\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n44 posts\n02-03-2025 at 01:18pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI think I ruled out the dead tube by switching the 1 & 2 tubes with the 3&4 tubes.\u00a0 Left channel still worked fine and the right channel was dead.\ndweller\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,950 posts\n02-03-2025 at 02:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBlown fuse?\nAlso, you stated you swapped speaker cables, what about interconnects.\nI had a bad IC that caused this problem. Cracked solder connection.\ntony1954\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,321 posts\n02-04-2025 at 05:35am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@dweller\nI had the right channel of my integrated die on me recently.\nTwo visits to a repair shop an hour away, a total of 5 weeks without it and it turned out to be a reasonably new RCA interconnect.\nSometimes the least likely cause, isn't.\nMore to discover\ntt caused am right channel fuse to blow\nPass Labs XA30.5 and ModWright KWA150\nQuality 15 Amp Right Angled Plug\nModwright LS100 vs The followings\nAny experiences with Modwright SWL9.0...\nFocal 36 MONTH FINANCING\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nAntipodes Audio K40\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Right channel dead on AR VSI 75","url":"https://forum.audiogon.com/discussions/right-channel-dead-on-ar-vsi-75"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n186008-164549\nEdit\nPower conditioners and power regeneration\nThere are so many different options on this subject it\u2019s unbelievable. But in the meantime it seems to me that between two companies that I\u2019m comparing, they seem to do the same thing with power conditioning, and as far as I can tell there is no audible difference. Comparing two different conditioners, the elite 20 pfi and the aq pq2. On the other hand, I\u2019ve heard that power regeneration is good, but it also can generate noise. Besides plugging into the wall, which I know works great, I still would like some protection to my amplifiers against brown out or surges. Has anyone else experienced any difference with these 2 products?\npureclarity\n08-20-2023 10:52am\nNext \u203a\nLast \u00bb\n52 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n08-20-2023 at 02:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI only use Furman for my audio gear for surge protection.\u00a0 I use a Furman voltage regulator upstream of the surge protection.\u00a0 This gives me tight (5 VAC) voltage control along with excellent surge protection without the AC noise or expense of the regenerators.\nvinylvalet\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n956 posts\n08-20-2023 at 02:27pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPower regeneration is generally expensive and runs hot. Some folks like the results, others don't.\nThis reviewer has used both regeneration and filtration. You might find it interesting.\nPuritan PSM156 vs PS Audio P20 Regenerator\ncarlsbad2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,036 posts\n08-20-2023 at 02:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nLots of sour grapes on regeneration. I have the PS Audio P10 and it has none of the problems that those selling other \"conditioners\" report.\u00a0 When you're good enough that people have to make stuff up to defame you, then you must be doing something right.\nMy power into my house is 4% THD with chopped sign waves.\u00a0 \u00a0The output from my P10 is a perfect sine wave with 0.1% THD.\nIt sits there cool as a cucumber year after year.\nI'm not saying there are no other \"conditioners\" that work but I know this one does and I know a lot of the \"conditioners\" on the market limit current and do more harm than good.\nJerry\nkota1\nDetails\nDiscussions\nPosts\nThis discussion\n2,706 posts\n08-20-2023 at 03:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhen it comes to power conditioning YES, it adds value to the chain AFTER you have your room acoustics dialed in. I would recommend changing the outlet first (about $100), the conditioner you plug your system into next (I use Black Lion Audio PG2, stellar results, about $400), and the actual power cables last.\nhttps://www.blacklionaudio.com/store/power-conditioners/pg-2-power-conditioner/\nphillyb\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n420 posts\n08-20-2023 at 03:46pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nJerry is dead on the right. The best overall power conditioner you can buy is a PS audio regenerator, P10, P12, P15, or for big systems the mighty P20. I have tried all the big names and the only one that has stayed is the PS Audio ones, they do what the claim they did. One look inside shows you how your money is spent.\ntablejockey\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,431 posts\n08-20-2023 at 04:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nLike most things audio-yes, no and maybe.\nDemo is the only way to find out.\nPP user here.\nkota1\nDetails\nDiscussions\nPosts\nThis discussion\n2,706 posts\n08-20-2023 at 04:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@phillyb\nThe best overall power conditioner you can buy is a PS audio regenerator, P10, P12, P15, or for big systems the mighty P20.\nThat is not accurate. If it were true those conditioners would be in use in every recording studio on the planet.\npureclarity\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n96 posts\n08-20-2023 at 05:36pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThx, I compared the aq pq2 which is like a conditioner power strip, with my elite20 power factor, which you know has the reserve tank in there, but if I remember correctly, the elite 20 shuts down with low voltage as well as high voltage, the aq only on high voltage. \u00a0I was considering adding the furman f1500 ups. Only other way to have ultra clean power is condition from the pole to your meter, which I\u2019m not going there.\noddiofyl\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,644 posts\n08-20-2023 at 05:38pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have an Equi-Tech Son Of Q and it did help with hum, etc in my last residence .\u00a0 \u00a0My new place has surge protection at the panel and honestly I am not sure if it is OK to use with tube rectified gear .\u00a0 \u00a0It runs +60 VAC on the Hot lead and\u00a0 -60 VAC on the Neutral lead of each AC recepticle on the rear.\u00a0 \u00a0 Never had a problem with any gear , including my SS rectified tube amps.\nIt definitely helped with transformer hum in the past on my mono amps .\u00a0 Jjst not sure if it is safe for something with tube rectification so i plug it directly into the wall and unplug if there is severe weather or loss of power\nPost removed\nAug 20, 2023\nkota1\nDetails\nDiscussions\nPosts\nThis discussion\n2,706 posts\n08-20-2023 at 07:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@carlsbad2\nBefore I answer did you check out my virtual system yet? Very low on aesthetics, high on SQ. Studio's are built like tanks, practically bomb proof, they are work spaces. I agree that consumer gear is MUCH more practical. When it comes to power though what do you want? Something that's a work horse, bomb proof, and transparent enough to reveal the nuance in a master tape right? I have never auditioned the PS Audio power gear, no disrespect. But to claim its number one??\nI chose to go with a pro power conditioner as the price was reasonable, it lowered the noise floor, and has so far survived two power/lightning surges. I would NEVER claim its best, better, whatevever.\nfuzztone\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,651 posts\n08-20-2023 at 10:22pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe only issues with a regenerator is that Paul Magowan wrote me that it would not draw (appreciably.) It actually costs 100 watts (and heat) just to power it up. And if you compromise the input power (loose PC or a storm) while on stand by it can (and has) blown the fuse.\ntablejockey\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,431 posts\n08-21-2023 at 12:25am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n\"Only other way to have ultra clean power is condition from the pole to your meter, which I\u2019m not going there.\"\nI'd be thinking the same way only IF at the very least a dedicated outlet is already in play.\nI use BOTH.\ncarlsbad2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,036 posts\n08-21-2023 at 02:30am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nthe thought that there is perfect power on the poles is not just wrong, it's dead wrong.\u00a0 most of the noise on the system comes from large industrial and combined residential loads and affects the entire system.\u00a0 BTW, I've worked 40+ years for an electric utility.\nthe clipped","title":"Power conditioners and power regeneration","url":"https://forum.audiogon.com/discussions/power-conditioners-and-power-regeneration"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192857-115924\nEdit\nReplace tubes yearly?\nI just watched a Paul McGowan video (PS Audio) about the wisdom of leaving your gear powered on all the time. I get that. He also said that vacuum tube gear is the exception and not to leave it on all the time. I get that too.\nBut he also mentioned that it didn\u2019t make a huge difference since you probably should replace your tubes every year.\nIs that true? I have an Audio Research LS-16 tube preamp from the late 90s or early 2000s. I don\u2019t think the tubes have ever been changed. I\u2019m not really a \u2019tube\u2019 guy but this unit was given to me 6 or 8 years ago. As far as I know these tubes are original.\nAt one point I got curious about the different sound quality potential of different tubes and another Audiogon member lent me a set of tubes to try out. I could definitely tell a difference but did not think the new ones sounded better than the original ones. I mention this because at that time the original tubes were quite old and still sounded quite good. And still do.\nSo, bottom line is, is there any real need to replace tubes on a schedule of some sort. Maybe its different if it is an amp versus a pre-amp?\n01-22-2025  2:08pm\nNext \u203a\nLast \u00bb\n80 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nlarryi\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,674 posts\n01-22-2025 at 02:49pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe life of a tube is greatly dependent on the type of tube, the operating conditions of the tube, and even the specific manufacturer of the tube.\nPower output tubes tend to have shorter lives than linestage tubes or the input and driver tubes of an amplifier.\u00a0 Even among output tubes, the ones that are called upon to output high wattage tend to have short lives.\u00a0 A lot of manufacturers, in order to claim high output, create operating conditions that mean shorter life than if they backed off a bit on those operating conditions that shorten life.\nWhile the smaller signal input and driver tubes tend to have a longer life, these too vary greatly in how hard a particular amp drives the tube.\nGiven that there are so many variable involved, there is no simple formula, such as change tubes after this or that time interval.\u00a0 \u00a0Both my amp and linestage drive my tubes so gently that I have not had one tube go bad in over 15 years of operation.\u00a0 Even at the start of my use, the tubes that were put in were used tubes of unknown prior usage.\u00a0 Most of these tubes were probably well used before I got them.\u00a0 But, all my tubes are run so gently, they are expected to last a very long time.\u00a0 This is a VERY good thing because they are all expensive.\u00a0 My output tubes are 349s, the driver tubes are 348s; my linestage tubes are 310s.\noberoniaomnia\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n408 posts\n01-22-2025 at 02:50pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nShort answer: No.\nHaving a second set of tube around to periodically (anywhere between once a year to every 5 years) check whether you notice something, can be considered. But a yearly schedule is nonsense. If anything, it depends on numbers of hours on the tubes. If that would be important, then tube gear manufacturers would include a cumulative time counter on gear; I've seen those in electron microscopes to keep track of filament age, but am not aware of such features on audio gear.\nThere are so many variables (type of tube, circuit design, on/off cycles, total time, individual tube variance, ...) that there is no general rule possible.\nAnd then there is the burn-in (allegedly, I have not noticed anything on my tubes). So first it sounds bad because tubes are not burnt in, then change them after a year because they sound bad? LOL! If that is so much of a concern, then rather stick with SS.\nRelax, enjoy your music. If you like, do some tube rolling for fun. my 2c.\nyogiboy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,232 posts\n01-22-2025 at 06:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n\"But he also mentioned that it didn\u2019t make a huge difference since you probably should replace your tubes every year.\"\nThat is a ridiculous statement for him to make!\nPower tubes like EL34's and KT88's are good for about 2500 hours or more. But may go longer in an amplifier with a conservative design. Small signal tubes with numbers like 12AX7, 12AU7, and 6922, and rectifier tubes like 5AR4 may go 10,000 hours. So you get years and years of enjoyment. Using a tube tester may or may not tell you if you need a replacement. The best approach is to buy a new set of tubes, and install them. If they don't sound a lot better, put in the old ones and suck every bit of life out of them.\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n01-22-2025 at 06:41pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@yogatma\nIt depends on the tubes. But annual is not an appropriate schedule. Hours on the tubes. This is why tube amps have hour counters. Your component manufacturer should recommend the number of hours. It is dependent on how hard they run them.\nFor instance ARC recommends 2,000 on the 6550 tubes and 3,000 on the rest.\nonhwy61\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,459 posts\n01-22-2025 at 07:48pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nUnless a tube fails in someway, you never have to replace your tubes.\u00a0 Run them for 30 or even 50 years at a time and they will function.\u00a0 Now your equipment won't sound it's absolute best as the tubes age, but that's a very subjective observation.\nI don't know of any power tubes that will last 30+ years, but for small signal tubes in conservatively designed circuits it shouldn't be that big of a deal.\u00a0 Again, they won't sound perfect, but I can't do the things I used to do 30 years ago either.\nbigtwin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,626 posts\n01-22-2025 at 08:09pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAside from tubes, Paul's suggestion to keep your equipment powered up 24/7, is contradicted by many manufacturers.\u00a0 I know this issue divides members into two camps.\u00a0 My own amp manufacturer recommends turning off when not in use.\u00a0 Claims the soft start circuitry protects the equipment and leaving it powered up just shortens life and wastes power.\u00a0 Not trying to change the direction of the post, just suggesting it don't make it true, just because Paul says so.\u00a0 IMHO.\noddiofyl\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,644 posts\n01-22-2025 at 08:29pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNever keep tube gear powered up.\u00a0 It's a waste of electricity and dangerous.\u00a0 \u00a0Ever see a KT88 go nuclear red plate with arcing and flashing and sparking?\u00a0 It's scary.\nI've had good luck with tubes over the past 25 years that I've been using them. I try to be proactive about tube replacement. If a tube is noisy or doesn't hold its bias i replace.\u00a0 \u00a0But every year ?\u00a0 \u00a0No way.\nantigrunge2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,586 posts\n01-22-2025 at 09:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOne can only marvel at the occasional nonsense spouted by the industry greats: small signal tubes especially but even the venerable 300b were designed for >20000 Hours of service. So even if you were stupid enough to k","title":"Replace tubes yearly?","url":"https://forum.audiogon.com/discussions/replace-tubes-yearly"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192972-365\nEdit\nAdditional Input device / router\nMost of the preamps and integrated amps I'm interested in have a min. amount of inputs (some, like the Boulder, have only 3).\u00a0 I want to know if there is an add on device (preferably high quality) that would provide additional inputs and outputs.\u00a0 I need this in order to hook-up a cassette deck (please, no snickers) so wouldn't i need two outputs:\u00a0 one for the device itself and one for the deck?\u00a0 Does such a device exist?\nrussellrcncom\n01-30-2025  5:00pm\n3 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nyogiboy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,232 posts\n01-30-2025 at 05:38pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHere ya go!\nhttps://www.schiit.com/products/sys\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n01-30-2025 at 05:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@yogiboy\n+1 Good choice\nUse the primary two inputs on whichever preamp / integrated for your highest quality inputs and the two on the Shiit for the tape deck and other lower quality input,\nimhififan\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,260 posts\n01-31-2025 at 04:30am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCheckout the Sony SB-700 input selector, it comes with 5 input and 3 tape loop.\nMore to discover\nPlayer or Router Issue?\nUpcoming Move - Questions Ethernet Ca...\nRouter for Audio Streaming\nHint: \u00a0Change your Wi-Fi frequency to...\nNew Router, New Streamer, New Questions\nAyon Audio S-10IIxs\nAurender N10\nBricasti M5\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Additional Input device / router","url":"https://forum.audiogon.com/discussions/additional-input-device-router"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192976-188046\nEdit\nSpeaker hum from Subwoofer\nHello friends,\nI have persistent hum from my speakers when the phono stage on my Luxman 507-Z is engaged and the instigator appears to be from my JL Audio sub. Hum gets louder as I turn the volume up. Welcome any insight, thank you-\ndmeltz\n01-30-2025  7:32pm\n4 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nyogiboy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,232 posts\n01-30-2025 at 08:22pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTry a cheater plug and see if that resolves the problem. If it does then you will know that a ground loop is causing the hum!\nsteakster\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,220 posts\n01-30-2025 at 09:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPossibilities:\n- If the sub is plugged into a different circuit, plug it into the same one as the Luxman. (Same circuit not same outlet.)\n- Are any of the interconnects unshielded. Check routing to make sure they\u2019re not crossing over a power cord,\n- Disconnect any non-audio components from the system - such as TV, computer, gaming console, etc.\nknotscott\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,430 posts\n01-30-2025 at 09:49pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy Definitive Technology sub stopped humming when I moved the plug to a different outlet that\u2019s on a different circuit. Worth a try if it's feasible.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n01-31-2025 at 02:08am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWell, that's interesting, Luxman has gone to using a grounded AC socket, and no longer carries the double insulated label.\nMore to discover\nsubwoofer setup problem\nLowther Bass Reflex and Subwoofers\nI just purchased  ab&amp;k pt3 preamp...\nPractical tips for setting up your su...\nAnyone use Kef 104.2 speakers with a ...\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAntipodes Audio K40\nAuralic Aries G2.1\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Speaker hum from Subwoofer","url":"https://forum.audiogon.com/discussions/speaker-hum-from-subwoofer"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192815-122012\nEdit\nHelp :(  Speakers making constant static sound I cannot figure it out\nSpeaker \"whooshing\" static sound\nOther system setup photos for reference\nSo I linked to the video of the sound for reference. \u00a0It's been driving me crazy, so today I unplugged everything, took it all away from the console, cleaned it all nicely, and the plan was to, one by one, re-attach each component until the static returned, to try and isolate the cause.\nWell, the only thing plugged in is the amp (Rogue Cronus magnum iii) and speakers (Focal Kanta 3), and the static is back. \u00a0It is a constant sound, there is no source plugged in, and the sound does not fluctuate at all when I turn the volume up or down, or turn the knob to change source, or even when I turn the balance all the way left or right, it seems to have nothing to do with the amp settings then, so where could it even be coming from? \u00a0I just checked the power tube bias and all 4 looked perfect.\nTV is also unplugged, so there's nothing around to be causing feedback or rf interference that I can think of.\nI don't have any other speaker cables to test against but did swap power cords between some components. \u00a0All cabling throughout is Nordost Heimdall 2, and is running through the Nordost QBase power distributor which has 1 each of the QK1 and QV2 plugged into it. \u00a0Main cable from the QBase to the wall is Shunyata as I needed a 20amp cord to work with that box and there isn't one in the Heimdall line. \u00a0Wall receptacle is a 20amp one that I installed (can't recall the make at the moment, but I believe I got it from a user on here some years ago.)\nHowever, I tried skipping the QBase and plugging the amp straight into that wall outlet, no change. \u00a0Then I tried plugging it straight into a different outlet, still no change.\nBased on the the type of sound heard in the linked video, and the details that it seems totally unaffected by volume, balance, source selection, etc., what do you think it could be? \u00a0Does it seem likely to be an issue with the speakers, speaker cables, or the amp? \u00a0At least that would narrow down how to address it.\nThanks for any helpful suggestions.\nchrisryanhorner\n01-18-2025 11:31pm\n33 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nsls883\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,084 posts\n01-19-2025 at 02:28am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAre you hearing the noise in both channels?\nI would guess it's a bad tube, but I'm guessing.\noddiofyl\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,644 posts\n01-19-2025 at 02:45am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI also think bad tube,\u00a0 bad Input or driver.\u00a0 \u00a0 Turn amp off,\u00a0 remove input tubes. Turn on .\u00a0 Noise gone?\u00a0 \u00a0If not turn off, replace input tube(s) and pull driver tubes.\u00a0 \u00a0That should help isolate a bad input or driver.\ncarlsbad2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,036 posts\n01-19-2025 at 03:43am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDo you hear music if you play music?\nYou have isloated it to the amp.\u00a0 some switch has gotten flipped is most likely cause.\ncarlsbad2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,036 posts\n01-19-2025 at 05:22am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPS\u00a0 if it is a tube in the amp, it is the rectifier as that is the only tube that affects both channels.\nbuellrider97\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,066 posts\n01-19-2025 at 06:48am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe Rogue is SS power supply and lacks tube rectification. I had a similar situation in a SS amp that was less pronounced and it was a diode issue. Contact Rogue, use the listed phone number before you get too carried away.\noddiofyl\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,644 posts\n01-19-2025 at 04:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThere is an odd number of tubes.\u00a0 Maybe both channels go through that twin triode tube in the center position?\nchrisryanhorner\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n22 posts\n01-19-2025 at 05:41pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThis is great info. A simple tube replacement is really the best I could have hoped for.\nSo the test would be to remove it and power up and see if the sound is gone? I just want to confirm that there is no danger to the amp or speakers to power it on with that tube out of the socket? They last a good long time so this is actually my first time having had to replace any of them, and don\u2019t want to make a costly error.\nAlso, assuming that the rectifier tube mentioned is the center one of the 5 smaller tubes, since it is between the channels? \u00a0Or similarly, is it safe to remove to test each of the smaller tubes one at a time until the issue is isolated?\nIf so, I\u2019ll order another and be back in business, and thanks to the audiogon community for your diagnostic expertise.\nstereo5\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,728 posts\n01-19-2025 at 06:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThere are no rectifier tubes in your amp, it uses solid state rectification.\nchrisryanhorner\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n22 posts\n01-19-2025 at 06:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI see, but still sounds like the prevailing opinion is that one or more tubes are failing. \u00a0Would the procedure for determining which tubes need replacement then be to try powering up the amp with one removed, and check for that sound, and repeat until I find the instance where removing it eliminates the static?\nAlso, if I do need to replace a tube, is it advised to replace the tube in the same position on the opposite channel as well?\ncarlsbad2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,036 posts\n01-19-2025 at 07:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou don't have spare tubes?\u00a0 Do you have spare lightbulbs in\u00a0 the house?\u00a0 tubes are consummables.\u00a0 always have a spare set.\nPowering up with a tube missing will generally not cause a problem but will not tell you anything since the amp will not work with the tube out.\u00a0 the static will likely go away, but a new tube may not fix it.\u00a0 In other words, you have to replace it with a good tube to know if you've found the problem.\nJerry\nsls883\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,084 posts\n01-19-2025 at 07:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDo you have any extra tubes? I wouldn't run it with a tube missing. I don't know if it would hurt anything.\nIt looks like the 12AU7 is a preamp tube common to both channels. If you are getting noise in both channels, I would replace it.\nIf you are only getting noise in one channel, move the tubes on the left channel to the right side and vice versa.\u00a0 If the noise moves to the other channel, it's probably one of the tubes on the side that is noisy.\nthecarpathian\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,296 posts\n01-19-2025 at 07:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nEven though it appears a tube is the most likely culprit and since you have no spares to check it out, I\u2019d still call Rogue, explain to them what\u2019s up, and see what they say about ways to possibly rectify it without causing damage.\nchrisryanhorner\nDetails\nDiscussio","title":"Help :(  Speakers making constant static sound I cannot figure it out","url":"https://forum.audiogon.com/discussions/help-speakers-making-constant-static-sound-i-cannot-figure-it-out"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n190929-135250\nEdit\nLeave it Open or Close it Off: A Listening/ Living Room Dilemma\nWe are doing a bit of remodeling and I have the option to add a pocket door to close off an open hallway in the rear left of the room. My setup is 2qty floor standers and 2qty REL S/510 subs. The room is 15x20 with an 8' ceiling. My speakers aim down the long wall. The room has a TV but it's mostly a listening room with minimal furnishings: 1 normal sofa and 1 end table behind the listening position.\nHere's what I'm thinking: if a 40hz soundwave is 28ft, wouldn't it be better to leave the hallway open so that the soundwave has more room to do its thing?\nOn the other hand I'm thinking having a decently sealed 3' wide solid-wood pocket door there instead of an open hallway might pressurize the room better?\nHas anyone been in this situation or have enough knowledge about acoustics/ physics to know which would be the better choice?\nveerossi\n08-11-2024  5:38am\n27 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nlarryi\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,674 posts\n08-11-2024 at 12:19pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI would think that having a door is better because it adds flexibility\u2014 regardless of which sounds better you have the option to go with closed or open, you can partially block sound going into and out of the room, you can discourage meddling with your system, etc.\ndill\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,636 posts\n08-11-2024 at 12:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe soundwave would most likely pass though the door or wall.\nmitch2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,780 posts\n08-11-2024 at 12:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf how it sounds is your only deciding factor, then buy a piece of plywood, cut to size, and A/B how it sounds with/without. \u00a0You could even take frequency and SPL readings for a given source, like one of Stereophile\u2019s test CDs, if you are way serious about it. \u00a0 If there are other esthetic or privacy reasons for the door, then having a door is the more flexible option, as discussed above.\nlarryi\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,674 posts\n08-11-2024 at 01:18pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI was at a friend\u2019s place when he had an expert in set up over to help with speaker placement, room acoustics, etc. \u00a0This person did some basic experiments, including removing wall treatments from such \u201cobvious\u201d locations like the first reflection point. \u00a0We also listened to how the sound changed when someone leaned against the long interior wall to damp vibration. \u00a0What was interesting is that the room sounded better with that wall LESS damped and without treatment at the first reflection point. \u00a0The lesson learned is that there is no fixed best approach; the only way to know is to experiment. \u00a0It turned out that the room sounded better with the door closed (at the back of the room) and with a storage closet door (also at the back of the room) open. \u00a0We were told that the open closet was acting as a kind of trap and this helped this particular room.\ngdnrbob\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,520 posts\n08-11-2024 at 10:35pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nClose off the space. Thank me later\nmikhailark\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n448 posts\n08-12-2024 at 12:19am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYeah close it. I have large room that is open and it has issues\npanzrwagn\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n696 posts\n08-12-2024 at 02:57am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'm a big fan of pocket doors, but there's a couple things to remember. 1) Get the good pocket door hardware. The cheap stuff will haunt and vex you. 2) Do bot use hollow core doors. They're made from hardboard in a cheap perimeter frame with strips of cardboard in between two layers of masonite. Use heavy exterior grade doors - much better acostically. 3) Pocket doors work best as default open doors. Close them as needed.\nkingbr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n492 posts\n08-12-2024 at 10:29am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nInstall the door. I went through the very same thing. The opening to my theater room had no door. I had a glass panel door installed (hung curtains as well on the door) and just love that I can close the room off or leave open if I so choose. Do the door!\nbaylinor\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,671 posts\n08-12-2024 at 12:31pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWith a door, you can experiment both ways. Without a door, you're stuck one way. Easy choice. I also recommend an exterior thick solid wood door over a hollow interior door.\naewarren\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n794 posts\n08-12-2024 at 12:41pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThere are more reasons to install the pocket door than not. You really won't know if there will be acoustic benefits until it is done, but if not you can just open the door during listening sessions. But you gain the ability to close off the room, a benefit to both you during sessions and to others in different parts of the house. Remember what works acoustically for someone else's room may or may not hold true for yours.\nbarts\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n804 posts\n08-12-2024 at 02:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe rear wall of my listening room has a pocket door over my right shoulder and in the corner.\u00a0 Its normally open for easy access to the laundry room and bathroom. That is all there is on that level.\nI don't think it affects the bass as much as it does the L/R balance.\nThat's another vote for the door.\u00a0 And as already stated get a good solid door with good hardware, otherwise you could create a buzzing monster at some freqs.\nRegards,\nbarts\nbigwave1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n283 posts\n08-12-2024 at 02:10pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI would advise to listen, but leaving it open is an escape valve for pressure and bass.\nemergingsoul\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,582 posts\n08-12-2024 at 04:30pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI would buy a puppy.\nPocket doors a really cool and there is flexibility.\nEver think about a pocket ceiling?\nveerossi\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n176 posts\n08-14-2024 at 06:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'm going to move forward with it and will chime in again after it's done to follow up.\u00a0The door will be a nice solid wood one- not one of those hollow ones.\nThank you all for your input. I appreciate it.\nkokomo\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n21 posts\n08-16-2024 at 11:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI think you\u2019re making the right choice to install the doors. One thing I\u2019ll add is that I find a real time analyzer app like Spectrum really useful for system setup\u2014both for ensuring equal loudness from both sides and optimizing speaker placement. Spectrum is in the Apple App Store. It or something similar must be available for Android.\nkokomo\nDetails\nDisc","title":"Leave it Open or Close it Off: A Listening/ Living Room Dilemma","url":"https://forum.audiogon.com/discussions/leave-it-open-or-close-it-off-a-listening-living-room-dilemma"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192871-165894\nEdit\nM-Connect remote app\nIn my main system, I stream audirvana via Qobuz using a Bricasti M1SE DAC with the network card. After speaking with Scott at Verdant Audio in NJ where I purchased it, I asked him about an Apple I pad to use from my listening chair 15' away rather than lugging my laptop to the same chair, with corded USB cable .(Which he stated was unnecessary as it was hardwired Ethernet)\u00a0\u00a0 I was wondering and didn't ask him at the time, will the I-pad with the M-Control app (I'm assuming through apple or Audirvana) talk to my windows based computer that has my Qobuz and Audirvana account,\u00a0 and allow me to remotely play my songs? Robert TN \u00a0 Electronically challenged\nrobshaw\n01-23-2025  5:04pm\n0 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nMore to discover\nAudio Aero Capitole CDP Remote\nWanted: Exceptional preamp w/remote\n3.5mm to bare wire/spade lug remote t...\ni need a universal remote for a cal i...\nRemote control repeater for YBA Passi...\nRSX MUSIC SERVER RSX MUSIC SERVER\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nVandersteen Model 2c ii signature\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"M-Connect remote app","url":"https://forum.audiogon.com/discussions/m-connect-remote-app"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192800-178702\nEdit\nUpsampling/Oversampling\nI need some technical insight here. My Jay's Audio CTD3 Mk3 CD transport has the toggle switch for turning Redbook CD files into 4x\nupsampled\n(176.4kz) files. The dac being fed the files is a Holo May KTE. Holo Audio recommends keeping the dac in non-\noversampled\nstate all the time. The dac itself does no\nupsampling.\nThe upsampling alone coming from the CD transport with dac in NOS mode makes for some very nice music, but I find I am liking the dac to be in oversampled (OS) mode when handling the 176.4 despite Holo recommending against it. In OS mode the detail, nuance, and air goes up a notch and voices gain more subtle inflection, and the music sounds a bit tubey and very pleasantly so. Problem is that after an hour or two of playing there will suddenly intrude pops and clicks that mandate stopping play.\nI am assuming, perhaps wrongly, that the issue is that the dac's oversampling of already\nupsampled\nfiles is causing a mismatch of data processing that eventually catches up with and impedes proper data processing, and that the music feels more PRAT-y because there is some \"euphonious distortion\" that happens to sound \"good.\"\nAfter I have turned the CD transport off for awhile it can be re-started and all is well again when running the dac in OS mode - for awhile.\nAny insights welcome.\nbolong\n01-17-2025  7:55pm\n7 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nmilpai\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,687 posts\n01-17-2025 at 09:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nUpsampling refers to increasing the sample rate of an audio signal to make it higher resolution, typically to match the requirements of a specific system or to improve audio quality by adding more data points. For example, you might upsample 44.1kHz audio to 192kHz to get a smoother signal.\nOversampling refers to the process of sampling at a much higher rate than needed, often used in digital-to-analog (DAC) conversion or signal processing. It helps to reduce errors like noise or distortion and allows for more accurate signal reconstruction when converting between digital and analog formats. For example, oversampling might involve sampling an audio signal at 8 times the target rate (like 8x the base sample rate). This is what I do when I upsample FLAC files to 3X DSD\nSo, upsampling is more about matching a higher target sample rate, while oversampling is usually about improving the quality of signal processing by sampling more frequently than necessary.\nYou might want to pose this question on Audiophilestyle forum where they have very specific thread for Holo Audio May and way folks are maximizing their audio experience.\nwillywonka\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n516 posts\n01-17-2025 at 09:18pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI also own the Holo May KTE DAC and most users who own this DAC prefer NOS. I'm streaming from an Aurender N200. Hardware based upsampling in my experience is pretty worthless. If you really want to play with extreme upsampling, stream from your computer and buy HQplayer and try the various modulators. I've played this game and did DSD 1024X, PCM 768 and so forth but in the end decided to get a dedicated streamer and use NOS. The upsampling to me was very fatiguing over the long term but it was fun to play with.\nbolong\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n966 posts\n01-17-2025 at 09:47pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nRedbook played with the transport set to 176.4 and with NOS is definitely superior to just 44.1, and I can live with that as is, or even just Redbook without the upsampling. The Holo is a very good dac, but if I happen to stumble onto an intriguing mod I am bound like everyone else here to follow it down its hole.\ncarlsbad2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,036 posts\n01-18-2025 at 03:45am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI think your problem has nothing to do with upsampling.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n01-18-2025 at 12:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe biggest changes with modern DACs in my hearing has been with the way the digital filter behaves, specifically the high frequency roll off.\nWith older DAC's I often found a very large gap in performance between 44.1/16 and higher resolutions but that's narrowed a lot since 2000.\u00a0 That gap has really narrowed most recently.\nPersonally I upsample my Internet radio and streaming music to 96/24 and can't hear any improvements after that.\nmswale\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n389 posts\n01-19-2025 at 04:38pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nJust my thought. You are double oversampling? It might be overdriving the DAC when it starts to pop and click, it might be getting too hot? Think driving it like that for a long time will overheat it. The DAC is in overboots mode, receiving a very high signal to start, then it's trying to up convert that up-converted signal. The DAC chips will start heating up much more over normal use?\nYou can test, run the transport in normal mode, then upsample at the DAC, does it do the same thing? Reverse that with transport upsample, DAC normal. Does it pop?\nbolong\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n966 posts\n01-19-2025 at 08:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYeah, something like that is what I was suspecting although it is\nover\nsampling an\nsampled file. No popping when NOS is in place on the dac whether the file coming from the transport is Redbook or the transport has 176.4 turned on.\nThe fact that the popping is length of time played dependent certainly points a finger at overheating.\nStrange though that Holo recommends leaving OS and OS PCM etc.off\nperiod.\nWhy then are these modes even available at all\nThanks\nMore to discover\nNon Oversampling DACs\nOversampling/Increased dither: a lot ...\nUpsampling / Oversampling DAC\nOversampling DAC Vs. Non Oversampling?\noversampling vs. non-oversampling - w...\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10IIxs\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Upsampling/Oversampling","url":"https://forum.audiogon.com/discussions/upsampling-oversampling"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192777-13272\nEdit\nAudiophile Equipment Repair?\nLooking for recommendations for a place/person who works on audio equipment. My DAC has a broken (snapped off due to my clumsiness) COAX port on the back that needs replacing. Seems like a fairly simply repair, but I'm not qualified to attempt it. Would appreciate a name and email for someone with the right skills for this.\noutput555\n01-15-2025  3:00pm\n24 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ncleeds\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,635 posts\n01-15-2025 at 03:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt would be helpful if you told us where you're located and perhaps which DAC you have.\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n01-15-2025 at 03:35pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nANY Computer Repair person could fit that.\nI would take the cover off, take it to someone, if the conversation is intelligent, how much? how long?\noutput555\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n139 posts\n01-15-2025 at 04:02pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\ncleeds: I'm in Richmond, VA. It's a Gustard DAC.\noutput555\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n139 posts\n01-15-2025 at 04:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nelliottbnewcombjr\n: I imagine you're correct, although knowing audiophile replacement parts might not be in their wheelhouse.\ndekay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,249 posts\n01-15-2025 at 04:22pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHere's and inside pic...\nhttps://soundfoundations.in/wp-content/uploads/GUSTARD-X26-PRO-DAC-7.jpg\nDeKay\njwei\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n276 posts\n01-15-2025 at 04:35pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNot in your region, but a plug for my area: I have the good fortune of having found a competent electronics repair guy who has worked on my Mark Levinson 390s, my Magnum Dynalab Etude, as well as other equipment.\nElectro Tech Services in the Montrose area of Glendale CA. (He used to be in Pasadena.) Tel\n(626) 792-414\n5 (I hope he is unaffected by the wildfire.)\nelliottbnewcombjr\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,003 posts\n01-15-2025 at 05:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\namong other things, they refurbish and sell vintage, they might repair it for you.\nsame thing, arrive with cover off, intelligent conversation?\naudio exchange\nwturkey\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n872 posts\n01-16-2025 at 12:55am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nParts Connexion in Canada.\noutput555\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n139 posts\n01-16-2025 at 03:03am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nelliottbnewcombjr\nThanks, sent them an email. Waiting for a reply.\noutput555\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n139 posts\n01-16-2025 at 03:04am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nwturkey\nThanks, I've bought from them before. I wasn't aware they do repairs.\noutput555\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n139 posts\n01-16-2025 at 03:05am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks, I hope they're not in the fire's path. I'll call tomorrow.\nbigkidz\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,510 posts\n01-16-2025 at 02:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'm in New Jersey and we can repair fix upgrade ay component.\u00a0 We can offer upgrades to take that DAC to an entire new level.\noutput555\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n139 posts\n01-16-2025 at 02:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nbigkidz\nThanks for the offer. I think I've found a local person who can do the repair. I'll let you know if it doesn't work out.\nkatzenjammer27\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n150 posts\n01-16-2025 at 03:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\noutput555\nhere in Williamsburg, just down the road from you. Our local guy is an arrogant bastard, but endearingly so. He'll first tell you that you can't afford him, also tell you it will be several months - while his wife is giving you a nod behind his back that he's exaggerating. Place is called Action Electronics.\nYou have Audio Exchange in Richmond, they do repairs, had them refurbish a Carver Receiver back in the day. Bought my Bluesound Vault there while I was shopping for amplifiers 2 years ago. They frown on Chi Fi equipment due to their military background - as far as I can gather, but otherwise they are pleasant, not as much character as our guy in Williamsburg...\noutput555\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n139 posts\n01-16-2025 at 04:13pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nkatzenjammer27\nHey from Richmond.\nThanks for the info. I talked to the fellow you mentioned about three years ago and was going to contact him about this, but couldn\u2019t remember his name or contact info. Yes, he\u2019s a funny guy. When I asked him about doing a relatively simple update on my $10k CD transport he snarled a bit saying he doesn\u2019t work on CD stuff. He eventually said he might consider it--if I could afford him. I eventually went with someone else who was considerably more open to doing the update.\nI did contact Audio Exchange about the repair. He declined, telling me to send it back to the manufacturer. I\u2019m guessing what you said about his anti-China sentiment influenced his decision. Ironic considering almost everything electronic comes from there, with the notable exception of high-end, boutique audiophile gear.\nAnyway, I think I\u2019m set having found someone local whom I know and trust.\nThanks, again.\ndevinplombier\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,714 posts\n01-16-2025 at 05:27pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI really believe that an audiophile should be able to repair their own electronics.\nThe same way that if you own a motorcycle you can't help being / becoming at least a little bit of a mechanic.\ngrislybutter\nDetails\nDiscussions\nPosts\nThis discussion\n3,627 posts\n01-16-2025 at 05:47pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI really believe that an audiophile should be able to repair their own electronics.\nI believe I should have wings\noutput555\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n139 posts\n01-16-2025 at 06:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\ndevinplombier\nI really believe trolls should refrain from posting annoying comments.\nstereo5\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,728 posts\n01-16-2025 at 06:13pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@devinplombier\n, I do not own a motorcycle, I own 2 vehicles which I am not ever going to work on. \u00a0Where do you get off saying we should be able to fix our own stuff? \u00a0At my age, they aren\u2019t even steady enough to solder, so by your thinking, I shouldn\u2019t have high end equipment? \u00a0That blanket statement wasn\u2019t very helpful or intelligent.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n01-16-2025 at 06:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI really believe that an audiophile should be able to repair their own electronics.\nHonestly I hate repairing t","title":"Audiophile Equipment Repair?","url":"https://forum.audiogon.com/discussions/audiophile-equipment-repair"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192592-98878\nEdit\nGROUNDING - assistance on how NOT to shock yourself\nI live in Wisconsin. In winter the static buildup comes out when I lift the turntable needle. Even though I know it's coming it remains SHOCKING. I'd hate to damage my cartridge.\nCan I attach a wire to the Pre-amp ground and touch it to remove my static?\nDo I need to wear rubber sole shoes? or have a rubber mat?\nHelp on this would be appreciated.\ntjjunk\n01-02-2025  3:25pm\n17 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ncarlsbad2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,036 posts\n01-02-2025 at 03:38pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWearing rubber will probably make it worse.\u00a0 you can touch something grounded to get rid of the static before touching your audio equipment but it will still shock you.\u00a0 assuming you don't mind, that will fix it.\nI think any ground will do but it might be worth it to run a ground wire back to a wall outlet.\u00a0 Someone with more experience with this will probably make a better suggestion.\nJerry\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n01-02-2025 at 03:46pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019d discourage you from using your gear as a ground path. You may have several pieces of gear that are already grounded, and when you walk across the rug you build up a charge. The problem is that the discharge can induce a pop or surge inside your components.\nIf you want a painless solution I\u2019d suggest adding humidity to your listening room.\nOtherwise, get yourself\u00a0 a grounding station by using\u00a0 a 3 prong plug and wire only the center ground pin.\u00a0 Of course, before doing even that I'd always suggest using a 3 prong outlet tester to ensure the outlet is wired correctly. :)\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n01-02-2025 at 03:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI just thought of something. Maybe a\nstatic discharge mat like these\nwould work for you?\nThey offer a high impedance path to ground, so it may take a few seconds to dissipate a static charge you build up. Not honestly sure how well they\u2019d work in your situation, but certainly would prevent the pain.\nAnother alternative is a metal key. The large surface area of the key means you don\u2019t discharge from 1 point, making it less painful.\njc4659\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n621 posts\n01-02-2025 at 05:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@tjjunk\nI live in WI also and feel your pain (literally) from shocks during the winter. It seems when the temperatures are mild and in the 30's the air can hold more moisture and the risk of static shock is low. When we have extended days with temperatures in the teens and single digits the air is drier and the risk of static shock is a lot higher. That's when I break out the humidifier. It really helps cut down on the static shocks. \u00a0I also run one in the bedroom at night so my throat doesn't dry out and seems to help prevent colds. \u00a0I have procrastinated adding a humidifier to the furnace due to the expense but that's another option. I have also thought about a static discharge mat as suggested by\n@erik_squires\nbut never tried it.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n01-02-2025 at 07:10pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWell, you can add some humidity in a variety of ways, by putting a pan of water on a hot surface.\u00a0 Not your amps, of course, but if you have radiant heat or something like that.\nThe mats DO work, just not sure what the discharge rate is.\u00a0 They are designed for technicians who are sitting at the mats while they work.\u00a0 Not really meant for quick zap fixes. :D\ndekay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,249 posts\n01-02-2025 at 08:12pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI purchased an inexpensive cool mist humidifier a few weeks ago as it\u2019s been getting dry from Noon to Late Afternoon (21% right now).\nYou would probably want a larger one to run all the time (I get a marine layer in most evenings).\nWorks fine with filtered tap water (clean and let it air dry every other day which only take a few minutes).\nI've used evaporative pans/basins in the past, but they were not doing enough this Winter.\nhttps://www.amazon.com/LEVOIT-Humidifiers-Bedroom-Diffuser-Humidification/dp/B09W21XFS5/ref=sr_1_8?crid=200EZZ6MWLQ4X&dib=eyJ2IjoiMSJ9.AgjrY2_DVoQuyGXVBm-I7lIciqeidiTTPpkzbhziVTMoejTM5t7Wfl6QOgquCfaSXpMW0U-utbVbofVMwRqMZBsVSiaODKzI3UitUSCGT1VbgUWq0HGVuOyN1y1MbHZw4tll91kX4WD4id_627KsVjwQQY0M_3yylcfVpw9SevkQbFKbuEad2CcFJK2VpLgyepqwxOtlugkoHXahbVLHHguZ5OgI_nPfxCSp491a6B-DaAihlt_DQIsozRKher__7NH1nqIKbJtdQeZ_Psfb2hrTaDf5IPQLZL_lXe89Ao45-9vBi2odUAqwzMfkpPYWDi_v8r0A_ythPCld6qmkis1iPfqGSAqyQK2-RaWfS4I.KtDxuYAS5gvlktEQ4y5kITR_tAY8u9ffWfgRfROqCZo&dib_tag=se&keywords=humidifier&qid=1734545945&refinements=p_n_feature_six_browse-bin%3A7031381011&rnid=7031380011&s=home-garden&sprefix=humidifie%2Caps%2C263&sr=1-8&th=1\nDeKay\nstereo5\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,728 posts\n01-02-2025 at 10:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI use an Air Care whole house humidifier during the winter months due to my wife\u2019s health concerns. \u00a03 years ago, it cost $179.95 from Home Depot but may be more now. \u00a0The humidifier is in the kitchen and the stereo is 2 rooms away. \u00a0I get absolutely no static discharge anywhere in the house now. \u00a0You can set the humidifier for a various amount of humidity. \u00a0I found 55% to be just right.\nterry9\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,354 posts\n01-03-2025 at 04:19am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have a strip of tin-coated copper bus-bar screwed to the wall beside my turntable. \u00a0It is connected to a 50K resistor, connected to ground (in this case, a copper cold-water pipe nearby).\nThe bus-bar doesn't make it more effective, but it's definitely a better look than a chunk of 14 AWG. \u00a0It doesn't eliminate the shock, but it makes it more bearable.\ndavidchampa\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n28 posts\n01-03-2025 at 08:34am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBack in the day, when I was managing audio and video studios, static electrical discharges were a serious problem. We discovered that mixing fabric softener with a bit of water and spraying the carpet around critical equipment alleviated the problem.\nhifiguy42\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n390 posts\n01-03-2025 at 12:06pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nanother Wisconsinite here and I can attest to the aridity. In my case, I simply touch the metal base of my \"equipment lamp\" that is next to the turntable before I lift the tonearm, for some reason this doesn't create the same \"POP\" and I don't feel any kind of static shock (possibly because I'm anticipating it v. getting surprised). While I do have a big area rug in the room, the equipment rack is on a bare wooden floor.\njoshua43214\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n67 posts\n01-03-2025 at 12:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nA lot of gear uses a \"floating\" ground (better called a neutral). With out knowing how your gear is wired, it is hard to say ","title":"GROUNDING - assistance on how NOT to shock yourself","url":"https://forum.audiogon.com/discussions/grounding-assistance-on-how-not-to-shock-yourself"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192755-2231\nEdit\nIs everything unstable until\u2026..\nAdded third shelf to the Quadraspire X Reference to accommodate the Puritan Labs 156 power conditioner which had been sitting under the stand on carpet. \u00a0No big deal, right? \u00a0Now everything moves forward again with lower noise floor, improved sound stage and better vocal/instrument attack.\nPreviously, a friend experienced same, positioning the same conditioner on Quadraspire SVT stand. \u00a0Stabilize your conditioner. \u00a0Game on\u2026..again.\nceltic66\n01-13-2025  2:20am\n4 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nroxy54\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,245 posts\n01-13-2025 at 04:34am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCongrats on your discovery\n@celtic66\n. A good rack allows every piece to sound it's best.\nzlone\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,431 posts\n01-13-2025 at 01:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nInteresting. I just added a PS Audio P12 to my system with good results. I have been thinking about trying some Stack AUVA footers for components, might have to give it a try.\ncarlsbad2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,036 posts\n01-13-2025 at 08:13pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@celtic66\nAre you saying your rack is more solid than the floor?\nceltic66\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,974 posts\n01-13-2025 at 09:10pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAt least more solid than my carpet. \u00a0Always been a believer in quality stands, starting with Target stands decades ago. \u00a0Not really valid now, but then a thing.\nSpoke with Kurt at Echo Audio years ago, he related a story of how an audio stand had come in and they set different things on it. \u00a0It did not matter what they set on it, the sound improved markedly. \u00a0They kept placing, removing and placing something else on it. \u00a0It was perplexing that anything they placed on it was affected so much.\nSimply stunned when some have no affect at all with stands of any kind. \u00a0Cheers\nMore to discover\nUnstable Imaging - Causes?\nIs everything unstable until\u2026..\nHave l become unstable?\nDealing with an unstable, vibrating w...\nRSX MUSIC SERVER RSX MUSIC SERVER\nVolumio Primo Plus\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Is everything unstable until\u2026..","url":"https://forum.audiogon.com/discussions/is-everything-unstable-until"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192582-135983\nEdit\nHelp with Equitech 1.5Q power conditioner\nHello all. My Equitech GFCI plug on the back keeps popping when I turn on the switches Equitech switches. Am I overloading the unit or is there an issue with the GFCI plug. It worked for a while but was always super easy to trip. I only have my Amp, preamp, TV, and speakers plugged into it. Any help would be appreciated. I am in in San Francisco bay area, are there recommendations to any place I can take to to get it looked at? With it tripping so much would replacing the gfci plug with a new one help (wonder if the current one is worn out?). It is out of warranty and I do not have the box it came in to ship. Thanks!\ncalifortini\n01-02-2025  3:58am\n38 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nbigtwin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,626 posts\n01-02-2025 at 04:33am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhat is the amp rating on the GFI plug and the total amps you have connected to it?\u00a0 That should answer your overloading question.\u00a0 I would start by thoroughly inspecting all the power cables you have running in the system.\u00a0 If there is a bad ground or possibly a wire has been damaged?\u00a0 Replace one cable at a time and see if the problem persists, or the problem cable is isolated.\u00a0 Just some things to try if you have not already.\u00a0 Cheers.\noddiofyl\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,644 posts\n01-02-2025 at 07:39am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have had a Son of Q for almost 20 years.\u00a0 \u00a0Never an issue .\u00a0 I would suspect a bad GFI\nI believe it is an off the shelf Leviton unit.\u00a0 \u00a0It's probably pretty straightforward and any competent tech.\nAs BigTwin suggested remove all power cords and then try them one at a time.\u00a0 These are pretty simple inside so hopefully it's limited to the breaker.\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,825 posts\n01-02-2025 at 01:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI had the same problem with my Q2 Equitech GFCI plug. I suggest you contact Equitech by phone with the issue and see what they suggest. In the end since I knew I was not over loading my unit I replaced the GFCI WITH A high quality standard outlet.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n01-02-2025 at 03:06pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI am actually more than a little surprised that there even IS a GFCI outlet on a conditioner.\u00a0 I'm not sure what the point of it is unless it's within 6' of a sink... :D\nIn any event, GFCI outlets are pretty standard.\u00a0 If you know how to use a screwdriver you could replace it in less than 5 minutes, but I honestly have no idea what you would use it for.\nSomeone please explain.... :D\nPost removed\nJan 08, 2025\ncalifortini\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8 posts\n01-08-2025 at 05:46am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks everyone for your comments. I just received a new outlet and will look at installing it over the weekend. I\u2019ll post results here, or any testing I end up doing to track it down. For the few questions above, I do not plug anything into it - it faults when I power on the other devices. this is a stock image of the back. Great (or not so great) to hear others experienced the same thing but able to fix.\nlink to back\nPost removed\nJan 08, 2025\nPost removed\nJan 08, 2025\ncalifortini\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8 posts\n01-08-2025 at 06:15am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@jea48\nmy bad\nthe link has the incorrect image. I'll add mine. The top left is the receptacle that has the reset button. The only devices are the TV, 2 speakers, preamp and amp are all that are plugged into the 1.5Q. none of which are plugged into the gfci plug - those are all plugged into the regular outlets on the back\nPost removed\nJan 08, 2025\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n01-08-2025 at 03:40pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOh, now I get it.\nGFCI outlets do go bad, but it could also be equipment with a leaky capacitor to ground or a reactive load, which is most likely with bigger motors and amps.\nIf you find the problem is only your amp, I\u2019d suspect swapping a GFCI won\u2019t help.\nSometimes these trips happen intermittently, so hard to diagnose fully. Of course another alternative is to see if you can trigger any other outlet.\u00a0 Maybe take the suspect piece of gear to your kitchen counter and see if you can trigger one of those outlets.\nPost removed\nJan 08, 2025\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n01-08-2025 at 06:12pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@jea48\n- Not my first time going through a balanced power system, though it is the first time I've known about GFCI on an example.\u00a0 I read through your explanation, which is what I remember.\u00a0 The part that I don't get is how a GFCI, connected to the secondary windings, tripping on a balanced power system would not also trip the kitchen outlet.\nAs you point out, the ground is not part of the GFCI sensing strategy in either case, but it's the imbalance between the current carrying conductors (which ground should not be except on a fault) which causes the trip.\nPost removed\nJan 08, 2025\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n01-08-2025 at 07:50pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@jea48\nWhen the same piece of equipment is plugged into a GFCI, say in the kitchen, the small leakage ground fault will be connected to the neutral grounded conductor.\nI'm afraid I don't see this yet, but I also don't want to jack the OP's thread.\u00a0 Let me go think on this for a while.\nPost removed\nJan 08, 2025\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n01-08-2025 at 09:33pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nReset the GFCI then checked for voltage from neutral contact to EGC, measured 1.2mV. I can\u2019t see the math how that would cause enough of an imbalance to cause a 5ma current flow to ground.\n@jea48\nCouple of thoughts. I = V/R, so when R goes to 0, current goes to infinity. In this case any R less than 0.24 Ohms would result in 5mA, assuming 0 source resistance.\n0.0012 V / 0.24 Ohms = 0.005 A\n0.0012 V / 0.1 Ohms = 0.012 A\nThe other thing is that when doing so on a live home circuit you are essentially shorting the entire home\u2019s neutral to ground.\nPost removed\nJan 08, 2025\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n01-08-2025 at 09:47pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAnyway....\nPoint is, if the OP's gear trips in the kitchen the issue becomes provably to be in that piece of gear.\nPost removed\nJan 08, 2025\nPost removed\nJan 09, 2025\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n01-09-2025 at 01:31am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt\u2019s already at ground potential. At the service panel the service entrance neutral conductor, electrical panel metal enclosure, and all EGCs (at panel) are bonded together.\nIt's close to ground potential... :)\u00a0 but now you have another path which is participating in that current flow.\u00a0 I'd be curious to see you ","title":"Help with Equitech 1.5Q power conditioner","url":"https://forum.audiogon.com/discussions/help-with-equitech-1-5q-power-conditioner"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192639-20253\nEdit\nThe last 20 years of Home Power Have Been Amazing\nIn the late 1990s I installed my first electric panels. Mostly for the sake of running a safe woodworking workshop but also to enable the multiple window units and my partner and my offices, plus the TV and stereo, of course.\nAt that time whole house surge protectors were available but not required. Being an IT guy in a storm prone area of course I went for it. Otherwise however breakers were rather similar to those from the original mid 1960s versions. I mean, I\u2019m sure there were improvements in panel technology and how breakers were manufactured but for the home there were really only two aspects you needed to care about:\nCurrent capacity\nPoles (1 or 2)\nAnd for the home owner that\u2019s were things stood for almost 40 years. In the last 20 years though much has changed. Arc fault (AFCI or CAFCI) first required in 2002 for bedrooms. Now (since 2017) they are required practically everywhere in a home. Whole house SPDs (surge protectors) are required from 2020.\nMost recently, the 2023 NEC greatly expanded the use of Ground Fault (GFCI) protection. GFCI\u2019s which were limited to kitchen and bath outlets are now required for your washer and dryer, microwave, range, dishwasher and (in my case) garbage disposal. Take a look at any modern panel. You\u2019ll see 4 different types of breakers:\nOld fashioned\nGFCI (white test button)\nCAFCI (dark blue test button)\nCombined GFCI + CAFCI (pale blue test button)\nAnd outlets? Have you noticed weather resistant (WR, 2008) or tamper resistant (TR, 2008) requirements? In addition to GFCI requirements. Sheesh. It\u2019s a marvel any electrician can keep them all straight, let alone a home owner.\nOf all these improvements though the only one I'd suggest you rush out and get is the\nwhole house surge suppressor\nunless your breaker panel is running 40 years old in which case a replacement may be a good idea soon.\nerik_squires\n01-03-2025 10:28pm\nNext \u203a\nLast \u00bb\n56 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n01-03-2025 at 10:45pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWorth including actual results, which I just found.\u00a0 Seems that all these improvements have been leading somewhere good after all!\nhttps://iaeimagazine.org/electrical-safety/a-quarter-century-of-protecting-homes-occupants/\nbigtwin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,626 posts\n01-04-2025 at 01:30am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@erik_squires\nWe just moved into a new home and I'm currently developing the basement around a dedicated listening room.\u00a0 I found it really helps to have a son-in-law who is a master Electrician.\u00a0 I ran all the wiring but I like to leave the live hook up at the panel to him.\u00a0 If you look closely, you will see the whole house surge protector installed.\u00a0 This idea came from reading one of your earlier posts on this subject.\u00a0 Required?\u00a0 Maybe not, but for a few hundred dollars, the peace of mind is well worth it.\u00a0 IMHO.\u00a0 Thanks for your informative postings and keep up the good work.\u00a0 Cheers.\nbigtwin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,626 posts\n01-04-2025 at 01:30am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nForgot the picture.\u00a0 \ud83e\udd23\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n01-04-2025 at 02:32am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@bigtwin\n- As of 2020, whole house surge protection is required by the NEC, but regional codes may say otherwise.\nI really did it wrong. I spent 3 days installing a garbage disposal thinking the entire time I should have raised children to do this for me. Nice to have the family support like that!\nI'm afraid that petty projects like mine don't get electrician's or plumber's attention around these parts for love or money.\u00a0 If they were my kids though I could apply guilt instead.\nbigtwin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,626 posts\n01-04-2025 at 03:58am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@erik_squires\nUp here in Canada, the concept of surge protectors flies under the radar.\u00a0 Nothing in the building code.\u00a0 We need Arc Fault breakers on any lines that have outlets.\u00a0 Lines with only lights and switches still use regular breakers.\u00a0 I ran a number of dedicated lines into what will be my listening room.\u00a0 Double 30 amps and 8 gauge for my 240v step down transformer and 20 amp 10 gauge for my front end equipment.\u00a0 I plan a full words and picture post later this year when the project is completed.\u00a0 It's been a lot of fun and a lot of work.\nbikeboy52\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n199 posts\n01-04-2025 at 04:20am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@bigtwin\nOy Vey, is that an Aluminum ladder in front of the live panel? \u00a0OSHA 1915.72. Not a good look .\njpwarren58\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n746 posts\n01-04-2025 at 01:49pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nEric,\nHere's a story. Neighbor here in the lowcountry had lightning hit tree then it went to his gutters, then to internal supporting bolts in footers, then to random outlets zapping his dryer, washer, and two tv's. Would these upgraded outlets you mentioned prevented this? Any solution other than multiple surge protectors?\n61falcon\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n158 posts\n01-04-2025 at 02:49pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGiven the added protection, all the advances are worth it but the cost--ouch!\nDo they still have exceptions e.g. single receptacle, non GFCI for sump pump or freezer to reduce possibility of ghost trip?\nPost removed\nJan 04, 2025\ncarlsbad2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,036 posts\n01-04-2025 at 04:43pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy relatively upscale neighborhood in north San Diego County was built in the late 80s.\u00a0 the entire development was wired with Federal Pacific Electric (FPE) breaker boxes.\u00a0 they were out of business about the time that the homes were built because their crappy breakers were burning down houses.\nFortunately for me, I bought the house and promptly started adding circuits to power tools, an electric dryer (I work for the electric company, but have to admit I've gone back to gas now) and a few othe circuits including 2 circuits for audio.\nI was surprised when I went to Home Depot and new breakers weren't available but they sold \"refurbished\" ones that were 4-10 times the price of new name-brand breakers like Westinghouse.\u00a0 So I quickly did the math and concluded it was worth the effort to change to a 200 A Westinghouse panel with all new breakers, which I did.\u00a0 total cost of parts about $300.\u00a0 I did the work myself.\u00a0 at the time I didn't even realize how dangerous the FPE breakers were.\nNow, 30 years later, I am surprised no homes have burned down but several neighbors have done thermography and found significant hot spots in their boxes.\u00a0 When they get a quote to change out the box, it runs up to $50,000 because of new regulations.\u00a0 of course all the breakers have to be the new type which are 5-10 times as expensive.\u00a0 but the big cost is a new code requirement that the gas meter and the electrical panel must ","title":"The last 20 years of Home Power Have Been Amazing","url":"https://forum.audiogon.com/discussions/the-last-20-years-of-home-power-have-been-amazing"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192713-178702\nEdit\nA Walk in the Woods\nAudiophile Audio Fuses\nA low-key discussion about a slow and surprising realization.\nbolong\n01-09-2025  4:49pm\n0 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nMore to discover\nPhil Woods Song for Sisyphus\nNeed Help with Woodside (Radford) ISA...\nWoodsong Garrard 301, Artisan Fidelit...\nThe great Phil Woods has passed.\nA Walk in the Woods\nAntipodes Audio K40\nAuralic Aries G2.1\nFocal 36 MONTH FINANCING\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"A Walk in the Woods","url":"https://forum.audiogon.com/discussions/a-walk-in-the-woods"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192668-155182\nEdit\nConnecting Hegel H 190 to ARC vsi75\nAfter reading more, I\u2019m guessing I should use the line level output, yes?\nhotei\n01-05-2025  8:20pm\n5 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nyogiboy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,232 posts\n01-05-2025 at 10:10pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThose are two integrated amps. What are you trying to accomplish?\nhotei\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n192 posts\n01-06-2025 at 01:21am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nJust trying to use the Hegel connected to ARC to be able to use the streaming of the Hegel through the ARC.\nglennewdick\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,011 posts\n01-06-2025 at 05:02pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nif thats the case get a dedicated streamer and forgo the integrated to integrated idea.\ntubegb\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n230 posts\n01-06-2025 at 05:30pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou are on the right track in terms of connections. Line out on the Hegel to one of the five line inputs on the ARC VSi75.\nhotei\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n192 posts\n01-07-2025 at 02:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks everyone!\nMore to discover\nConnecting External DAC's and Pre-Amp...\nHegel H200\nHegel preamps volume control\nI need to adapt a Hegel HD 25 DAC to ...\nHegel H590 vs. PS Audio DIRECTSTREAM ...\nRSX MUSIC SERVER RSX MUSIC SERVER\nAuralic Aries G2.1\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Connecting Hegel H 190 to ARC vsi75","url":"https://forum.audiogon.com/discussions/connecting-hegel-h-190-to-arc-vsi75"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192662-199560\nEdit\nLost in transmission how signal loss robs your sound.\nThought some may find this article useful. Stumbled across this Canadian audio magazine.\nhttps://pmamagazine.org/lost-in-transmission-how-signal-loss-robs-your-system-of-great-sound/\nluvtubes69\n01-05-2025  5:33pm\n3 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ntony1954\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,321 posts\n01-06-2025 at 04:45am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSo, if you don't do all the individual things we do to improve the sound of our systems, the sound won't be as good.\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,825 posts\n01-06-2025 at 01:31pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@luvtubes69\nThanks for posting the article.\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n01-06-2025 at 04:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWell that's kind of sloppy writing, but sure why not?\nMore to discover\nBest quality connection from Network ...\nDoes this degrade sound?\nOn good sounding inductors\nJitterbug into USB port on Bluesound ...\nAiyima A5 Pro does not send sound to ...\nFocal 36 MONTH FINANCING\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAurender N100H\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Lost in transmission how signal loss robs your sound.","url":"https://forum.audiogon.com/discussions/lost-in-transmission-how-signal-loss-robs-your-sound"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n129422-21\nEdit\nPassive high pass filter - Marchand XM446XLR-A\nSo, I am about to set up a new pair of monitor speakers and fill in the lower frequencies with two subs. \u00a0The monitors are Aerial LR5s and the subs will be two Aerial SW12s with internal 400 wpc amps. \u00a0The LR5s weigh 105 pounds each and play flat to just a bit above 40Hz (-6dB at 35Hz). \u00a0The Aerial subs are fast, powerful and musical and should integrate well with the LR5s. \u00a0My pre and power amps are solid state, fully balanced and the power amps provide 300/600 wpc into 8/4 ohms. \u00a0I will be running separate ICs from the preamp to my power amps and a second set from the preamp to the input on the subs.\nMy first question is whether I would benefit from using a high pass filter between the preamp and amplifiers to limit the low frequencies going to the LR5s so the amps are not trying to drive them full range.\nI didn't find a DIY design that I was comfortable with but I did run across several posts by people using a Marchand passive high pass filter. \u00a0The Marchand XM446XLR-A is fully balanced and has a high pass corner frequency of 80Hz (i.e., the frequency that is down by 3dB). \u00a0The Marchand has a standard slope of 24dB/octave but can be made for other slopes.\nMy second question is whether anyone out there has experience with the Marchand passive high pass filter and is it sufficiently transparent or should I expect to hear unwanted artifacts with the filter in my system?\nFinally, is there a higher quality alternative or should I simply play with the low pass on the sub and forget about filtering the signal to the main speakers?\nhttp://www.marchandelec.com/xm46.html\nmitch2\n04-22-2017  2:36am\n18 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nrhyno\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n651 posts\n04-22-2017 at 12:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\ndrop me a note if you'd like to experiment - i have a marchand that didn't leave when i sold my subs.\nbdp24\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10,509 posts\n04-23-2017 at 01:57am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe Marchand crossovers are very well regarded in the hardcore DIY community. The maker can supply the owner replaceable \"cards\" to insert in the x/o, providing just about any x/o frequency and slope one desires. And most are available with balanced XLR jacks, unlike the similarly-priced First Watt B4, another fine unit. The B4, unlike the Marchands, contains no Opamps, achieving filtering via all discrete parts. The B4 also needs no extra-cost filter cards, having internal dip-switches to set frequency and slope characteristics.\nmitch2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,780 posts\n04-23-2017 at 01:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks guys for the responses so far. \u00a0bdp24, I believe you are talking about Marchand's active crossovers but I am not interested in putting another active component in the signal chain. \u00a0Thank you for referencing the First Watt B4. \u00a0Even though it is an active device, it was still interesting to read the manuals by Pass. \u00a0It would be interesting ot me if he would offer a passive kit that the user could stuff with their favorite caps and resistors, and to provide some technical information on component compatibility and matching subs to the main speakers.\nI have not yet read anything saying the Marchand passive high pass filter is exceptional, or does nothing unwanted to the signal. \u00a0Instead, what I have mostly read is that some prefer the Marchand high pass to doing nothing because they believe reducing the demand for the main amplifier to drive low frequencies improves clarity in the upper frequency ranges. \u00a0The flavor of most of the posts seems to be that one way or the other is a lesser of two evils.\nI am really interested in hearing from folks with a high end and resolving system who are using monitor type main speakers mated with subs, and the method they have found to best cross over the subs to the mains.\nOne advantage I have is that my subs and main speakers come from the same manufacturer and are made to work together. \u00a0There is an option to use a crossover within the subs to high pass the main signal so that is something else I can at least try, particularly if I position the subs near the main speakers so the second IC from the subs to the mains would be short.\nNow that I have finally received the main speakers, second sub and stands for everything, I will contact the manufacturer to verify their recommendation for the best way to integrate the high and low frequencies. \u00a0Would still appreciate hearing about success stories.\nbdp24\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10,509 posts\n04-24-2017 at 07:31am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAh, okay, it's passive you want. The purist way to high-pass filter the signal going to your power amp and speakers, to relieve them of reproducing bass frequencies (a worthwhile objective imo), one that has been used since the DIY 1950's, is to install a single capacitor (the value of which is determined by 1- your power amp's input impedance, and 2- the desired x/o frequency) on the inside of your power amp, on it's input jacks. This will create only a 1st-order, 6dB/octave filter. That is the way to incur the least damage to the signal, both by the use of but a single part---a capacitor, and by removing the need for an extra inter-connect---no x/o box necessary. The formula for determining the capacitor value required for your application can be found all over the 'net.\nWhat I have heard from other Magneplanar Tympani owners on the Planar Speaker Asylum, many of whom use Marchand active x/o's in their systems, is that the active Marchands are actually better sounding than the passive ones. How can that be, you ask?\u00a0Aren't passive parts more transparent than an\u00a0active circuit?\u00a0Look at the parts inside those passive Marchands---the parts\u00a0necessary to provide a\u00a0higher-than-1st-order filter. Nasty, ugly sounding things, worse than the parts in an active circuit.\nSpeaking of ugly sounding parts---all Marchands contain Opamps (except the tube model, one presumes). The First Watt B4 is completely discrete---all resistors and capacitors, no Opamps, no IC's. The B4 provides 1st-2nd-3rd-4th order (6-12-18-24 dB/octave) filters from 25Hz to 3200 Hz, in 25 Hz increments. Incredible! Unfortunately, it is available unbalanced/RCA jacks only, so may be unsuitable for your system.\nmitch2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,780 posts\n04-24-2017 at 11:00am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks bdp24, I have calculated the capacitor size needed but everything I have read seems to be for single-ended signals. \u00a0If I want to go the single capacitor route with my balanced amp, do you know what I would do differently...i.e., do I put a series cap on both of the differential signal legs? \u00a0Is the calculation different for a balanced signal?\nbdp24\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10,509 posts\n04-24-2017 at 10:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGreat question Mitch, one I need the answer to as well! I've done it on a single-ended amp (my Bedini 25/25, for use with Quad 57's and subs), but not ","title":"Passive high pass filter - Marchand XM446XLR-A","url":"https://forum.audiogon.com/discussions/passive-high-pass-filter-marchand-xm446xlr-a"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192474-546\nEdit\nHow much dirt is too much dirt\nin regards to power conditioning? \u00a0I\u2019ve always found better sound when turning off the tv, I thought because of the distraction (mental thing). Recent purchase of an EMI meter (Trifield EM100) shows the tv with 15 - 20 mv added noise to a base of 25 to 50 mv line noise, time of day dependent. \u00a0I sit here, close my eyes, flip the tv on and off, and hear real music tv off, painfully disrupted audio joy, tv on. \u00a0Then contemplate noise figures. \u00a0Specifically a post where a claimed drop of 200 something to 78 mv made their day. \u00a0I\u2019ve never seen posted what is an excellent, good or poor number. \u00a0Anyone? \u00a0My real question being, will a line conditioner lower my power line dirt enough to be worthwhile?\nwlutke\n12-24-2024 10:33pm\n7 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n12-25-2024 at 01:25am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have no idea quantitatively. I have been pursuing high end audio for fifty years and each step with cleaner power has instant benefits to the sound quality. So, hence good quality preamps, DACS, streamers... etc, weigh 40 lbs or more, most dedicated to power management. Really good equipment will have two boxes... for instance a preamp. Direct lines, power conditioners, high end power cord all contribute to better sound.\nI payed attention to specs on equipment for the first couple years and then gave up, because by and large you get misdirected by measuring a few variables as there are so many. Hence, I never started measuring power or distortion.\nzlone\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,431 posts\n12-25-2024 at 03:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHaving TV\u2019s on usually reduces enjoyment. Seriously though, you have to try this out for yourself. Dedicated lines are a significant upgrade if that is possible for your system. I was listening to my system last night, Christmas Eve, and the sound was exceptional. Assuming there would be lower noise on power lines coming into my home due to the holiday, it made me think I might need better filtering. The folks that use the PS Audio regenerators seem pretty happy with the results, and regen seems like the ultimate resolution.\njl35\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,489 posts\n12-25-2024 at 03:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSome knowledgeable people have said, for best results unplug everything in your video system - unplugged not simply turned off...it works in my system, and is obviously a free tweak...I'm on an excellent power grid, and power conditioning has only had a negative sonic impact for me ...\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n12-25-2024 at 05:10pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI wish I could tell you that any of these meters gave solid data on noise and perception.\u00a0 So much depends on the filtration in your gear as well.\nMy basic guidelines are to create two zones of power conditioning.\u00a0 One is the clean zone on which your analog devices with nice power supplies run and another is the dirty zone for wall warts, TVs and PC's.\nThe biggest mistake I see users make is to put noisy and dirty devices on the same outputs of a power conditioner.\u00a0 With few exceptions you just introduce noise after it's been removed.\nwlutke\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n759 posts\n12-25-2024 at 09:31pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI didn't expect a definitive answer but you never know until you ask, right?\nI did find that my garage lighting is horrendously noisy. \u00a0It's cheap, bright 100W total LED strip lighting with a whopping 1,300 mv noise at the source, and a good percentage of that showing up at my gear.\nSo garage lights off.\nReducing line noise from 70 mv to 50mv (tv off) is beneficial. \u00a070 mv is where the strength bar starts flickering a second bar. \u00a050 mv and below seems sonically ok for now.\nkennyc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,146 posts\n01-02-2025 at 05:05am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nEveryone's power situation is unique, some cleaner than others.\nConditioners very in effectiveness, likely a high quality conditioner will make a significantly noticeable positive sonic difference.\nto be worthwhile?\n@wlutke\nonly \"\n\" can decide if it is worthwhile enough to part with \"\nyour\n\" money\njoshua43214\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n67 posts\n01-03-2025 at 02:29pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy old DAC was plugged into a power strip that it shared with the wall wart for my Chromecast Audio.\nSometimes, I would have people over that wanted to listen to my system, and I would unplug the wall wart mid-song. Every time, folks would sit up and ask \"what did you just do?\"\nA while later, a lightening strike nuked my $8k JVC projector, and my NAD AVR.\nI have since invested in 3 ZeroSurge suppressors that all have isolation. 1 connects to the HT sub and projector, another connects to the AVR and BD player and has built in USB out to replace all the wall warts. I later added the big 20amp 12 outlet to the 2channel system for the added mains filtering and to isolate the DAC from the amps. The one with the USB outs had a huge impact on the sound quality, the one connected to the DAC/amps had a modest impact provided the basement shop lights were off, and a big impact if there were on.\nThe moral(s) of the story are:\nWall warts and switch mode power supplies can and do have a very adverse affect on the sound quality of a good 2 channel system. Included in this is dimmer switches and (most especially after wall warts) is LED lighting. LED lights use the cheapest SMP's on the planet. I knew a guy who's garage door would open when he turned on the lights, and my GF had her thermostat make a buzzing noise from an LED lamp in the basement.\nMOV based surge suppressors (this includes even the very expensive audiophile ones) fail silently over time from multiple \"micro-surges\" that occur everytime your fridge/AC/furnace/etc turns on or off. These need to be replaced frequently even if they seem to still be working. I knew the risks at the time, and it cost me $11k to replace everything.\nGear that pollutes mains should be isolated from the rest of the mains. ZeroSurge suppressors are expensive, but they never fail over time, and exceed filtering requirements (they are \"lab\" grade).\nYMMV\nMore to discover\nHow to remove the tube cage SFS-80\nburn in - how important?\nI just purchased  ab&amp;k pt3 preamp...\nUltimate list of guides on how to get...\nHow many CaryAudio techs does it take...\nAurender N10\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"How much dirt is too much dirt","url":"https://forum.audiogon.com/discussions/how-much-dirt-is-too-much-dirt"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n1438192892\nEdit\nToggle switch cleaning?\nI have a preamp with a toggle switch for changing phase. Sometimes I lose the left channel on switching. Is this something that can be cleaned at home, simply and safely? Or can this be worn out?Thanks. Pete\nptss\n07-29-2015  6:01pm\n28 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nyogiboy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,232 posts\n07-30-2015 at 12:22am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt might be dirty contacts. Give it a shot of canned air before you do anything else.\nswampwalker\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,138 posts\n07-30-2015 at 03:05am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nafter the canned air, try operating the switch several times in succession if that does not work try contact cleaner and then do the same. if that doesn't work, take it to a tech.\nmattmiller\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,620 posts\n07-30-2015 at 03:56am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI would use some DEOXIT electrical contact spray. Its easy to buy a can and clean the switch yourself. Regards,\nMatt\njedinite24\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,503 posts\n07-30-2015 at 02:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe cleaners I use for the volume controls and switches in my vintage Accuphase gear are:\nMG Chemicals 409B-340G Electrosolve Zero Residue Contact Cleaner - 12 Oz\nMG Chemicals 404B-340G Contact Cleaner with Lubrication Silicones - 340 Grams\nIf Deoxit is readily available to you go for that as well.\nptss\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,966 posts\n07-30-2015 at 05:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks guys. How do I use the air or cleaners? From the front of the switch?\nmattmiller\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,620 posts\n07-30-2015 at 06:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou just spray the switch in both positions, and work it up and down several times, that should help it a lot.\nmattmiller\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,620 posts\n07-30-2015 at 07:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou just spray the switch in both positions, and work it up and down several times, that should help it a lot. with contact cleaner of course. Air dosent clean switches that are dirty, air blows away dust.\nptss\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,966 posts\n07-31-2015 at 03:59am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks Matt.\nalmarg\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,670 posts\n07-31-2015 at 12:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n07-30-15: Ptss\nFrom the front of the switch?\nNo, not from the front. Contact cleaner won't be effective unless it reaches the contacts.\nAlso, if the housing of the switch is completely sealed, with no slots or other small openings, spraying it from inside the preamp won't accomplish anything either. In that situation probably all you can do is to toggle the switch up and down many times, and see if that helps. If it doesn't, the switch would probably have to be replaced.\nBest regards,\n-- Al\nalmarg\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,670 posts\n07-31-2015 at 12:49pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBTW, if and when you spray contact cleaner into whatever small openings may be present on the housing of the switch, there may be a temptation to look closely at what you are doing. Keep in mind that some of the spray will splash back from any surfaces it comes in contact with, and into your face and your eyes if they are too close. It may also emerge in a strong stream from any openings that may be present on the switch in addition to the one you are spraying into.\nBest regards,\n-- Al\nptss\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,966 posts\n07-31-2015 at 09:05pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks Al. This switch is on my treasured Spectral DMC20 preamp I've had since new. I do use the switch regularly as I'm sensitive to having correct phase in my Spectral/MIT system. I've called Spectral but I think they're on holiday as I reach an after hours message although I'm calling during business hours. Would it be suitable/effective to use just a drop of the Caig ProGold Gp5 that I've used for years for contact cleaning generally?\nalmarg\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,670 posts\n07-31-2015 at 09:52pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI suppose it would be reasonable to give that a try, Pete, assuming as I said that there is a way to get it inside the housing of the switch. I'm not completely certain, though, as Caig's D5 is more specifically intended to dissolve corrosion, while the G series is intended mainly as a contact enhancer/conditioner/protectant for contact surfaces that are already mostly corrosion-free.\nBest regards,\n-- Al\nptss\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,966 posts\n08-03-2015 at 11:30pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhat about a drop of WD-40 instead of Progold ?\nswampwalker\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,138 posts\n08-04-2015 at 01:26am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf there is corrosion, maybe but WD-40 tends to get gummy and attract dust as it ages. Could be a short term fix w long term consequences. Why not use contact cleaner?\nronnjay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n36 posts\n08-04-2015 at 11:10pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWD-40....I wouldn't use that stuff on my garden rake!!\nronnjay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n36 posts\n08-04-2015 at 11:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWD-40....I wouldn't use that stuff on my garden rake!!\nptss\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,966 posts\n08-05-2015 at 06:35am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWD-40 is out; thanks. Contact cleaner only. Any suggestions on the best?\nyogiboy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,232 posts\n08-05-2015 at 11:05am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCRC QD (Quick Drying) contact cleaner is what I use.\npbnaudio\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,617 posts\n08-05-2015 at 02:05pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe Toggle Switches on the front panel of your DMC20 are totally sealed, no amount of whatever liquid you spray on them will ever get onto the contact surfaces.\nToggle Switch\nas an example, there are literally 1000's of these in many different configurations.\nThe only thing you can do is to replace the switch, which appears to be somewhat easy if your tech savvy, if not take it to someone whom is. The switches appear to be mounted on a PCB rear-mounted to the faceplate using the switches as standoffs / mounting hardware.\nSpectral DMC20 Internal picture\nBest of luck\nPeter\npbnaudio\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,617 posts\n08-05-2015 at 02:54pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIn studying the picture of the DMC20, I don't think the toggle switch has anything to do with your channel dropout issue. The switch on the front merely control relays that do ","title":"Toggle switch cleaning?","url":"https://forum.audiogon.com/discussions/toggle-switch-cleaning"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192545-199884\nEdit\nTube amp repair\nCan anyone recommend a person or facility that works on tube equipment in the Philadelphia area? \u00a0I have an integrated tube amp that is giving me problems. \u00a0I would take it to the store where I bought it, but every time I go by there, it\u2019s closed. \u00a0Thanks in advance.\nertaudio\n12-29-2024  5:15pm\n4 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ncarlsbad2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,036 posts\n12-30-2024 at 03:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nwho made the amp and is it circuit board based or point-to-point wired?\nertaudio\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2 posts\n12-30-2024 at 05:27pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt\u2019s a Sound Quest SQ-88. \u00a0I don\u2019t know the answer to your other question.\ndekay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,249 posts\n12-30-2024 at 07:22pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nQuest for Sound?\nHave you tried calling them?\nDeKay\nertaudio\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2 posts\n12-31-2024 at 05:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nActually, I have not. \u00a0But I will very soon. \u00a0Thanks.\nMore to discover\nRed Rose Tube Amp repair in Seattle area\nSumo Aurora Repair\nAudio repair shop near Newport or Pro...\nRepair Shop In VA / Washington DC - R...\nVintage Audio Repair / Tape Machine S...\nAntipodes Audio K40\nRSX MUSIC SERVER RSX MUSIC SERVER\nAyon Audio S-10IIxs\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Tube amp repair","url":"https://forum.audiogon.com/discussions/tube-amp-repair-8"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192434-165894\nEdit\nStatic on Audirvana sometimes\nMorning all. Haven't posted in a while, older now with a new left knee, Oh boy.\nWas streaming yesterday, via\u00a0 Audirvana and this situation has repeated itself .\u00a0 I sign in and all goes well. (for those of you that stream Audirvana this will hopefully make some sense) Once a song is chosen you hit the triangle arrow next to it, the song is highlighted and the seconds later begins to play. However, what happens now and frequently, the song starts and within a few seconds goes straight to static (at your volume setting, in my case 85 db or so) I immediately hit pause and the the lock icon to the right on the screen. Then go back and choose the same song, same manner and it usually plays just fine. Now between songs I reduce the volume by 20db in case it repeats itself on the next track, which it frequently does. Just wondering if anyone else has a similar experience? I earlier typed in the same post to Audirvana forum. I have had great success with the forum for many issues past, figured I 'd try again. Thanks all, Merry Christmas. Robert TN\nrobshaw\n12-21-2024  4:23pm\n3 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n12-22-2024 at 03:37pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'm not sure about your particular case but this used to happen to me due to changing resolutions, like going from 44.1/16 to 96/24.\u00a0 I solved it by going into my settings and increasing the time between songs or something like that.\u00a0 Another solution is to force a certain resolution, like 96/24 at all times.\nrobshaw\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n360 posts\n12-29-2024 at 09:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nerik_squires/// Tks for the response and suggestions. I'll have to grab my laptop, which gives me access to Audirvana and open up the settings page and see what your describing. Hopefully, I'll have some success. I''ll check out the certain resolutions (forcing) a higher one. Thank so much. Robert TN\u00a0 If anything else comes to mind, please et me know.\nrobshaw\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n360 posts\n12-30-2024 at 06:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nerik_squires\u00a0\u00a0\u00a0\u00a0\u00a0 My wife and I tried your suggestions. We tried up scaling X2 in that particular area of settings, and that seemed to work. I will take a shot at listening again soon and check again.\u00a0 I will also explore your suggestion of increasing times between songs. Not sure where that area is in settings????\u00a0 My wife says that\u00a0 suggestion seems to be the most logical. Her reasoning is that Audirvana depends on Qobuz, and maybe a little more time is needed for one to talk to the other???\u00a0 Again many thanks. Robert\nMore to discover\nBest Electrostatic Cans-Stax vs. Koss\nSVS and Electrostatics\nMA6500 - Static ?!?\nElectrostatic-vs-Planar strength, wea...\nElectrostatic amps\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nAuralic Aries G2.1\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Static on Audirvana sometimes","url":"https://forum.audiogon.com/discussions/static-on-audirvana-sometimes"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192142-30049\nEdit\nResistor Burn-in Methods\nHi Forum,\nA few years ago I got bored with my ARC VT-130 and decided to revoice it after purchasing a Jeff Rowland 625s. \u00a0Nothing like a new piece of gear to make you dissatisfied with your existing components. That said, I still liked the tube amp and did not want to sell it for something different instead, figuring careful and deliberative changes in parts could elevate the\u00a0 25 year old amp to a better performance level.\nTaking great pains not to change the core sound and performance of the amp (not an easy task) I only made changes to the signal path resistors and its 4 main coupling caps. My goal was to replace the old factory carbon comp resistors of the amp in order to increase its transparency by using modern resistors as well as to increase the soundstage width and depth by changing the amps 4 main coupling caps. After buying practically every boutique resistor Hifi-Collective had in stock, I painstakingly soldered and de-soldered numerous resistors in different locations, burning in each resistor for roughly 400 hours each before evaluating.\u00a0 The whole process took roughly 4-5 months of auditioning until I eventually came upon a combination that delivered the goods.\u00a0 The resulting mod now uses a combination of Shinkoh, Takman REX, Riken RMG, Audio Note resistors and Vcap Odam caps, which together render superb texture, body and transparency not to mention bowling alley deep soundstage performance -- keeping in mind that this is a 25 year old amplifier design.\u00a0 As one forum contributor commented, \u201cthe diamond is already cut.\u2019\u00a0 However, I believe, even an old diamond can benefit from modern polishing\u00a0equipment and techniques.\nI write all this to ask if there was an easier way to burn-in all those resistors out of the circuit, like a cable burner or break-out board of some sort?\nI settled on soldering in some cut-off resistor leads to the PCB locations, then lightly tacking the different resistors to those leads which made swapping out the resistors much easier.\u00a0 But, I still had to use up precious tube hours in the process. At that time, I only had one set of SED 6550 Winged Cs that was used.\nLooking back, I want to slap my forehead for wasting those tubes during the modification.\u00a0 I did consider buying a set of cheap tubes... but I wanted to voice the amp using the tube type I typically use.\u00a0\u00a0In the end, I am extremely satisfied with the resulting sound and listen to the amp for several hours every week with joy. Now, if I could only find a really good replacement for the Winged Cs.\nballen1\n11-29-2024  9:40am\n4 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nsalectric\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n785 posts\n11-29-2024 at 06:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCongratulations on getting your amp sounding the way you want! \u00a0As you noted, it requires a lot of time and patience to try lots of different resistors and capacitors to find the best match for your system and your priorities, but that really is the only way. \u00a0And it\u2019s much more rewarding than blindly following advice on the internet.\nAs you said, new components go through a burn-in period before reaching their final state, and that makes it difficult to evaluate new parts. \u00a0I use a burn-in jig to speed up the process. \u00a0If you are installing a new resistor or cap in a spot where it won\u2019t have DC across it, the jig is very simple. \u00a0If it\u2019s a low-current application like a resistor in the range of 1K to 1M, just connect it across the output of a line-level source like a CD player or FM tuner and let it play 24/7. \u00a0For a coupling capacitor that won\u2019t have DC across it, connect it in series with a resistor load on the CD player output. \u00a0 For parts that will have more current such as small value resistors or larger caps, you can do the same thing but connect them to the speaker outputs of an amp or receiver. \u00a0For parts that will have DC across them, I use an old tube linestage and connect the parts in the circuit somewhere similar to how they will be used after the burn-in is complete, then run the linestage with a CD player or tuner so it has actual signal. \u00a0I continue the burn-in for 75 hours or more depending on how quickly the particular parts break in based on past experience.\nThis may sound complicated but it\u2019s not, and it saves a lot of time. \u00a0I find the burned-in parts still go through a settling period once they are installed wherever I intend to use them, but usually it\u2019s enough to just run the component overnight.\nsalectric\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n785 posts\n11-29-2024 at 07:24pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCongratulations on getting your amp sounding the way you want! \u00a0As you noted, it requires a lot of time and patience to try lots of different resistors and capacitors to find the best match for your system and your priorities, but that really is the only way. \u00a0And it\u2019s much more rewarding than blindly following advice on the internet.\nAs you said, new components go through a burn-in period before reaching their final state, and that makes it difficult to evaluate new parts. \u00a0I use a burn-in jig to speed up the process. \u00a0If you are installing a new resistor or cap in a spot where it won\u2019t have DC across it, the jig is very simple. \u00a0If it\u2019s a low-current application like a resistor in the range of 1K to 1M, just connect it across the output of a line-level source like a CD player or FM tuner and let it play 24/7. \u00a0For a coupling capacitor that won\u2019t have DC across it, connect it in series with a resistor load on the CD player output. \u00a0 For parts that will have more current such as small value resistors or larger caps, you can do the same thing but connect them to the speaker outputs of an amp or receiver. \u00a0For parts that will have DC across them, I use an old tube linestage and connect the parts in the circuit somewhere similar to how they will be used after the burn-in is complete, then run the linestage with a CD player or tuner so it has actual signal. \u00a0I continue the burn-in for 75 hours or more depending on how quickly the particular parts break in based on past experience.\nThis may sound complicated but it\u2019s not, and it saves a lot of time. \u00a0I find the burned-in parts still go through a settling period once they are installed wherever I intend to use them, but usually it\u2019s enough to just run the component overnight.\nballen1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8 posts\n11-30-2024 at 06:35am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThank you for your thoughtful reply. This makes sense.\u00a0 I had toyed around with the idea of buying a cheap receiver at a pawn shop to use for something similar but didn't know I could simlly use the CD outputs as you described.\u00a0 I'll keep this conversation for referencing the next time...\nI must admit, the result of the process was very satisfying when it was all said and done.\u00a0 My knowledge and skills certainly improved along the way.\u00a0 Some of my past diy projects didn't always turn out so well.\u00a0 A few years ago, I tried to upgrade some speaker x/overs.\u00a0 $2500 later the speaker and several boxes of high end parts still set in the bottom of my closet, waiting for my patience and newly acquir","title":"Resistor Burn-in Methods","url":"https://forum.audiogon.com/discussions/resistor-burn-in-methods"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192403-82152\nEdit\n12v trigger question\nI have a DAC that is powered on by a 12v trigger. Right now it is triggered when my processor is turned on to a specific input that is used for 2 channel music through my main system using speakers. Works fine.\nI want to get a Topping A70 headphone amp that also has a 12v trigger out that I\u2019d like to use to also turn on the DAC. I found this y-connector that would allow the two separate trigger cables to be connected to the DAC\u2019s trigger at the same time- www.amazon.com/gp/product/B07V54WJ42/ref=ox_sc_saved_title_2?smid=A13GGF3VKVFGBN&psc=1\nI think this may work, but a couple things concern me.\nIs there a chance of harming the DAC if both the processor (with the processor on and that \u2019music\u2019 input selected) and the headphone amp turned on with both triggers sending a signal? This wouldn\u2019t happen on purpose but, you know, Murphy\u2019s law.\nWill the trigger voltage be able to pass through the connector or DAC and back to the unused component? Both the processor and the headphone amp use specific \u2019trigger out\u2019 connections to the DAC, if that makes a difference.\nHelp would be greatly appreciated as my electrical knowledge is lacking.\ntngiloy\n12-18-2024  7:37pm\n2 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nimhififan\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,260 posts\n12-19-2024 at 05:18am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTo safely trigger the DAC, put a diode in series with each input, it will prevent backfeeding between the inputs.\ntngiloy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n16 posts\n12-22-2024 at 05:35pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSorry for taking so long to get back and thank you for your answer. But, not having any electrical expertise or the proper tools I decided to go to plan B and just leave the dac powered on as the dac's manual suggests.\nA little extra electric usage, but the safety of the unit is worth it.\nI tried to find the electrical schematic for the 2 units that would have triggered the dac to see if they had built in a diode to the trigger-outs, but the manufacturers must not publish those.\nThanks again,\nMore to discover\nQuestion about BNC to RCA adapters?\nBasic question about impedance and watts\nQuestions about VPI TNT-MK-IV Platters\nGrace G940 Disassembly Question\nOrtofon MC Question\nVolumio Primo Plus\nAurender N10\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"12v trigger question","url":"https://forum.audiogon.com/discussions/12v-trigger-question"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192180-19946\nEdit\na \"resonance\" in my left ear\nI have a \"resonance\" in my left ear. At certain frequencies the sound will get a lot louder, very similar to a high-Q resonance. It's especially obvious on piano notes.\nI can demonstrate to myself it's my left ear and not my equipment in two ways.\nPut on headphones, listen to the same signal in each ear\nListen to speakers, plug one ear at a time\nOne clue is that I have tinnitus in my left ear. It varies in intensity and the resonance is definitely worse when the tinnitus is worse. However I can't tell if the resonance is at the same frequency as the tinnitus, which is very high pitched, while piano notes around 500 Hz typically stimulate the resonance the worst. I've even put a parametric filter on the music to demonstrate a notch at roughly 500 Hz silences the resonance.\nI've been evaluated by an ear doctor. My hearing is within the normal range. He didn't really even seem to understand my description of the resonance and said there was no test that could be performed. I asked for a brain MRI and they did that, but it was normal.\nNow here's the weird thing. Different DACs will stimulate the resonance to different degrees. For instance the Terminator 1 barely stimulates the resonance, while it goes completely nuts on the Gustard A26 and even more so on the Gustard X20 Pro. This is a bit distressing because I like so many qualities of the Gustards - I don't have the budget to try unlimited DACs and Gustard comes recommended by a friend in the NJ Audiophile Society. He can even mod it. But I just can't use it, the resonance is so bad. I haven't particularly liked other DACs I tried.\nAnyway, wondering if anyone might have any theories.\nmagon\n12-02-2024  6:52am\n4 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nwsrrsw\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,511 posts\n12-02-2024 at 03:36pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFor what it\u2019s worth. I had something similar. My. ENT removed a bit of dead skin. Are you congested? Do you use nose spray? Pray to St. Jude? Good luck.\ncleeds\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,635 posts\n12-02-2024 at 06:02pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGet a second opinion from a board certified ENT physician.\ngoofyfoot\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,608 posts\n12-03-2024 at 01:28am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have tinnitus in my left year. When I was about thirteen years old, I was playing drums for a rock trio and the idiot guitarist damaged my left ear by increasing the volume to ridiculous. The blast lasted less than twenty seconds but was enough to do permanent damage. So my problem is probably very mild by comparison but what works for me is that I take a regular dose of Gingko Biloba whenever my tinnitus becomes more frequent. Will this work for you; I haven\u2019t the slightest idea. A longtime friend of mine had some fireworks go off just next to his ear and nothing helps him. Other than the ginkgo biloba, maybe some holistic ear drops? As far as a specialist examining you, once the damage is done, it\u2019s irreversible. So you can pay to see one hundred different medical doctors and you\u2019ll still get the same diagnosis.\nslaw\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n26,979 posts\n12-21-2024 at 04:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThankfully my tinnitus isn't so severe that I can after years, block it out\nMore to discover\nBenz Lp-s Frequency Resonance Problems\nArm and cart resonance range -- discu...\nFloor Resonance and Full Range Speake...\nTuning a cabinet to extend response b...\nannoying speaker rattle  or resonance...\nAurender N100H\nRSX MUSIC SERVER RSX MUSIC SERVER\nVandersteen Model 2c ii signature\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"a &quot;resonance&quot; in my left ear","url":"https://forum.audiogon.com/discussions/a-resonance-in-my-left-ear"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n172849-11499\nEdit\nAV RoomService EVP Isolation Footers vs Star Sound Tech\nWaiting for my center channel and stand to arrive and need to make a decision on the interface between it and the stand . The stand matches the center channel (wood) and will be filled and use my Star Sound Tec 1.5\" threaded spikes on carpeted wood floor. I was going to use another set of Star Sound 1 \" brass points for the interface , but hearing many positive results using AV RoomService EVP's and Les Davis Audio Entropic Isolators is tempting me change it up.\u00a0 \u00a0.\nHas anyone compared the Les Davis Entropic Isolators vs the AV EPV's ?.\nIt's to difficult for me to demo all three of these options . I'm just looking to get the best performance possible without overthinking it.\nmrupgrade\n12-05-2021  2:21pm\n2 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nastolfor\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n317 posts\n12-07-2021 at 09:36pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI measured other EPV's feet against other isolation/decoupling, none of\u00a0 the \"foam\" based come close to spring based feet. From\u00a0Nobsound to\u00a0Seismic Isolation pods and podiums\u00a0do a much better job decupling and isolating that any of the of the foam-silicon-rubber mechanism, including the IsoAcoustic Orea and any of their products. I wish there was a way to put pictures here so I can show you, measurable, repeatable and reproducible test results.\nIf you know how to post pictures, let me know how. I have done RT60, decay,\u00a0 and other analysis with REW measurements.\nroxito\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n23 posts\n12-13-2024 at 01:01am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nhave you also compared it against the Stack Audio AUVA ?\nMore to discover\nIsonoe footers have ball bearing feet...\nSpeaker footers \u2013 Ugh\nShould I buy the Harmonix footers for...\nBest current footers for preamps?\nWHAT HAS WORKED FOR YOU? ISOLATION PL...\nAyon Audio S-10IIxs\nAntipodes Audio K40\nAyon Audio S-10IIxs\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"AV RoomService EVP Isolation Footers vs Star Sound Tech","url":"https://forum.audiogon.com/discussions/av-roomservice-evp-isolation-footers-vs-star-sound-tech"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192316-178933\nEdit\nWhen your boutique Hi-Fi product doesn't appear to justify the price\nSo I'm sure some folks on here might be familiar with the YouTube channel Mend It Mark but if not and you have a passing interest in electronics and fixing things, including hi-fi stuff, it's worth checking out. His repair of a vintage B&O Beocord tape deck is long but worth watching to get a peak behind the curtains. But apparently he was recently sent a very expensive boutique phono preamp by the boutique manufacturer itself, at the behest of the unit's owner, for repair. The manufacturer claimed Mark couldn't repair it and of course he did by reverse engineering it. In the process he not only repairs the electronic issues but the case that was damaged during shipping. Now the manufacturer appears peaved that Mark not only fixed the unit but reverse engineered and exposed the very DIY nature of the piece of kit so he filed a copyright infringement on Mark. Anyway, the original video is worth watching, again for a peak behind the curtain but also the lengths to which Mark goes to repair a unit considered unfixable. Here's a link to the\noriginal video\nby Mark and another to his follow-up\nvideo\nabout the copyright claim.\nI think perhaps the lessons learned from this are while there are plenty of boutique hi-fi makers out there doing great work, there also appears to be some out there that aren't too great and don't like their work being exposed for what it is.\nbipod72\n12-12-2024  5:19pm\n2 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nglennewdick\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,011 posts\n12-12-2024 at 07:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have had similar experiances with a Canadian audio company and a tuner i bought. I opened it up to find an Ali express $8 tuner kit in it, the kit inclided the tuner board, display, knobs etc. $200 for a $8 chinese tuner kit was disapinting to say the least. Wraping a fancy box around a cheap tuner and claiming made in Canada was a lie. It sounded like a $8 tuner as well.\nRoon Nucleus was another box of air..... the list goes on.\nnoromance\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n10,536 posts\n12-12-2024 at 08:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYeah, I saw that when he posted it. Lots of tantalums!\nMore to discover\nSo, \u201cAudio Science Review\u201d really doe...\nAudirvana doesn't sync up with Itunes\nEtheregen - doesn't seem right that i...\nlooking for a tube preamps that doesn...\nIt doesn't SOUND like a problem, but ...\nAurender N100H\nAuralic Aries G2.1\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"When your boutique Hi-Fi product doesn&#39;t appear to justify the price","url":"https://forum.audiogon.com/discussions/when-your-boutique-hi-fi-product-doesn-t-appear-to-justify-the-price"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192154-181782\nEdit\nNo Private Messages for Me\nAudiogon requires a credit card to send private messages now.\u00a0 I don't want to put my card on their server to be hacked.\nI have a couple of private messages sitting there now.\u00a0 Just posting this here so you realize that I won't be replying to your PM, not becasuse I don't want to, but because I can't.\u00a0 I'm sure there are others in the same boat.\nEnjoy the listening,\nJerry\ncarlsbad2\n11-30-2024  6:00am\n27 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,825 posts\n11-30-2024 at 12:33pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt's a shame that we as Audiogon members are not allowed to communicate with each other except through Audiogon and they monitor your messages and decide what information can be shared. Should Audiogon ever close, think of all the information and contacts that would be lost :-(\ngarebear\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,281 posts\n11-30-2024 at 01:22pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nUS Audio Mart - less expensive , less hassle\nroxy54\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,245 posts\n11-30-2024 at 02:48pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@garebear\ncarlsbad2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,036 posts\n11-30-2024 at 03:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI've gotten several new private messages from members who were able to send me a message.\u00a0 Perhaps you already have a credit card on file?\u00a0 Most companies keep your credit card for 7 years.\nUnder each message is a box from Audiogon with this message in it:\n\"You must have a verified phone number and payment method to send messages.\"\nTake care,\nJerry\naolmrd1241\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,046 posts\n11-30-2024 at 03:09pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYes its a silly way to to promote buying and selling on a site that does just that! Agon...dump the cc thing!\nfuzztone\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,651 posts\n11-30-2024 at 03:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI detect no change.\ndecooney\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,566 posts\n11-30-2024 at 05:43pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThey\u2019ll learn later on, when communications are restricted, members just end up going elsewhere over time. Storing Cc information for no good reason is a security liability, yet with all the same negative posts and repeat offenders showing up (under different account handles), maybe they are trying to validate member authenticity more to keep the same agitator trolls out. Maybe they'll post a policy reason for some of the recent site changes going on, who knows.\ndekay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,249 posts\n11-30-2024 at 08:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHere for a test.\nDeKay\nbrunomarcs\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n308 posts\n12-01-2024 at 01:15am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI've sent several messages to members, no cc or phone # no problem.\ncuriousjim\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,165 posts\n12-01-2024 at 04:01am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt seems that some do and some don\u2019t.\nasvjerry\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,194 posts\n12-01-2024 at 05:23am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@dekay\nFrom Laurie Anderson....awhile ago, but....\n\"I dreamed I had to take a test....\n...in a Dairy Queen....\n....on another planet.\"\n...with a \u2019tape bow violin\u2019.\nReminds self too much of reality, esp. a quantum version.\nI had been approached by one of our ilk with an issue of a personal nature.\nCouldn\u2019t even reply, blocked. Queried our local goddess Tammy...\n\"No CC # WITHOUT the 3 digit security code, not a happening....\"\nSuks, although I\u2019m not a Dr. or shrink of any sort, psych or physical.....\n...but I Can be an eyes with ears to hear....and happy to oblige....\nWork-arounds are poss, but a PIA to arrange given the concept of a PM being a Private Mssg.\nNot in to buy, nothing you might want to from yurs squirrelly....\n\"You Actually Want To Buy *X*?! *tsk* Off your meds Again?!\" *LOL*\nWant to hear my voice? Really?\n4 words:1st, text. 2 more, Obvious.\nOne more and the cell # is as well.\nEasy to hide in plain sight....*sheesh*\nasvjerry\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,194 posts\n12-01-2024 at 05:28am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n...gotta laugh 'bout it....\nScreaming @ strangers is really not an option.....\ncarlsbad2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,036 posts\n12-01-2024 at 05:32am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI've recieved more private messages from good-hearted forum members trying to help but can't reply to any of them.\u00a0 Same box with the same message in it and no \"reply\" option available.\n@dekay\nI tried clicking on your forum name and got your profile, system link, etc, but no message option.\u00a0 thanks for trying.\nI'm ok with this.\u00a0 I generally don't need private messages.\u00a0 If something is important, i'll just @ the person and post my message publicly.\u00a0 I've often offered forum members to stop by and have a listen.\u00a0 \u00a0I'm in .....Carlsbad.\u00a0 (CA)\nTake care,\nJerry\nasvjerry\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,194 posts\n12-01-2024 at 06:44am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@carlsbad2\n....Got the same blarney rock in my lap as well...talking about inferences.....\ud83d\ude0f\nI\u2019m a Jerry as well, obviously (always nice to \u2019see\u2019 another \u2019out here\u2019 *G* 5\u2019s)\n\u2019asv* is a distort of AVL, the aviation coding of airports, ower\u2019s for the NC city torn in half by that b*tch Helene....\nOne can wonder the grounds where we play at, across from the Biltmore Entry that got totally thrashed beyond trash....\n______________________________________________________________\nIt\u2019s really hard to absolutely hide and seem to disappear these daze.....\nA article in a WIRED a few back denoted the methods and means one fellow went into to attempt to \u2019disappear\u2019....site wipes, pics, anything relevant or even inferring such....\nFun for awhile, but when it came to transactions of any note in US society.....\nCash was your friend.....have lots and don\u2019t try to rent/buy/order substantial stuff.\nWorkable....paranoia helps, no guarantee....\nIt wasn\u2019t all that long before that Someone blocked you with\n\"Hi! Aren\u2019t you \u2019X\u2019?\" like a CIA agent \u2019inviting you to take a ride in a black SUV with vague plates,,,,\"\n_____________________________________________________________\nI\u2019ve not bothered, nor will unless I hit big with Lotto. In that POV, \"Nice to hang with y\u2019all...\u2019Bye! \" *poof*\n( Don\u2019t, I\u2019ll call You on a burner... ;) )\nNot paranoid....just \u2019Situationally Challenged\u2019.....and, NO, my last name Is Not \u2019Wick\u2019......no perforation devices, just an acid wit....\n\"....\u201960\u2019s....CA.....LA....\u2019all That\u2019....*waving flashlights*....Be here Now....\"\ncarlsbad2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,036 posts\n12-01-2024 at 01:35pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSeveral moe private messages this morning.\u00a0 I recieve them just fine.\u00a0 Can't reply.\u00a0 \u00a0I also can't click on a name an","title":"No Private Messages for Me","url":"https://forum.audiogon.com/discussions/no-private-messages-for-me"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192257-197580\nEdit\nHaving 2 different preamps to turn on the same amp via 12v trigger\nI have a an av pre for home theater and a 2 channel BHK pre for audio. The BHK is used in bypass while using home theater.\nMy issue is they share the same amp and I\u2019d like for the amp to trigger on with either pre. The amp doesn\u2019t have line input sensing trigger.\nHow can I trigger the amp with either pre ?\nSo far I\u2019ve only come up with make my own cable with diodes as to not backfeed to the pre that\u2019s not in use. Wish I can find something off the shelf.\ndahodevil\n12-08-2024  7:42pm\n6 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nimhififan\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,260 posts\n12-09-2024 at 02:48am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDepending on your connections, BobWire RCA1 or XLR1 should get the job done.\nhttps://www.amazon.com/stores/BobWireAudioProducts/Homepage/page/\ndahodevil\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n30 posts\n12-09-2024 at 01:43pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThank you. This should work.\nblackbag20\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n637 posts\n12-09-2024 at 03:18pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@imhififan\nThank you for the link.\nBob's designs look compelling!!\ndahodevil\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n30 posts\n12-10-2024 at 03:04am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI had a brain fart. I thought the BHK would be turned off in HT mode. It needs to be on. So that\u2019s the only one that needs to trigger the amps on. DONE.\nthanks\nimhififan\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,260 posts\n12-10-2024 at 09:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf the connection from the preamp to the power amp is XLR, by using a BobWire XLR1, there is no need to turn ON the BHK for HT.\nConnect the BHK to input A, the preamp/preamp to input B, and connect the 12V trigger output 1 of the BobWire XLR1 to the amplifier trigger input, set the mode to Audio sensing.\nWhen BobWire detects an audio signal from the BHK or preamp/pro, it will Issue a 12V trigger to turn on the power amplifier. No HT bypass required.\nHowever, I have just discovered that the BobWire RCA1 cannot be used with the above setup because it lacks the 12V trigger output capability like the XLR1.\ndahodevil\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n30 posts\n12-10-2024 at 11:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOh. I see.\nI will just use the theater bypass instead of adding something in the signal path.\nThe BHK keeps the solid state section on in standby anyway and in HT bypass the tube section is disabled.\nThank you for the information. This would work if I didn\u2019t have another option.\ndavid\nMore to discover\nRefinish speaker in different color\nTubes that Glow Different\nDifferent versions of MBL 101E??\nWhat are the different Levels of qual...\nAnyone upgraded from Zu Omen DWs to a...\nVolumio Primo Plus\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nFocal 36 MONTH FINANCING\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Having 2 different preamps to turn on the same amp via 12v trigger","url":"https://forum.audiogon.com/discussions/having-2-different-preamps-to-turn-on-the-same-amp-via-12v-trigger"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192265-140726\nEdit\nOptimize or buy new gear..?\nRecently had the experience of upgrading a single power cable in my system and it made enough of an improvement that I\u2019m not in such a hurry to buy new speakers. Made me think about optimizing / trying to get the most out of your system by working on the interconnects, power cables, speaker cables before say giving up on the other pieces of your system. Wonder if others have had similar experiences?\njoshindc\n12-09-2024  4:59am\n9 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nsls883\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,084 posts\n12-09-2024 at 05:11am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI've upgraded components and then felt justified in spending more on cables.\u00a0 The cables have made a difference.\nI have not gone back and tried the old components with the new cables, but I have wondered about it.\u00a0 The new equipment was better than the old gear using the old cables, but I do wonder how the old gear would sound with good cablrs\nghdprentice\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,554 posts\n12-09-2024 at 06:26pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI always go through an upgrade sequence: components, positioning, interconnects and cables, power cords, enjoy for seven years of so.\nThe effect of wires can vary pretty widely. But I guess, in general, I'll get 80% of the sonic improvement from component changes... then 10% from wires and another 10% from positioning and acoustical treatments.\nYou have to balance the likelyhood that you will do some component upgrades. If you think this is likely, do these first... then follow with wires. You want the wires optimized for the components you own.\nsteakster\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,220 posts\n12-09-2024 at 07:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOptimize or buy new gear..?\nI\u2019ve spent considerably more than 50% of the cost of my system on optimizing via better quality cabling, power supplies, power conditioning, grounding, etc. The SQ has improved enormously over time. I\u2019m very satisfied with following this path My modest system can run with some of the big dogs that I hear at audio shows. Yet, there are several important caveats.\n1) My primary components were long-term keepers from the start. They were well-respected by reviewers, the marketplace - and most importantly, by my ears.\n2) Simply buying a new cable doesn\u2019t mean that it will automatically improve the SQ. The challenge is trying to find the synergy between the components and cabling. For some reason, some cable designs just won\u2019t work out. I spent around 5 years auditioning many, many cables and power conditioners. This means an investment of money and time. It requires \u2019an audio fund\u2019 for buying and selling gear. It requires patience as a new cabling burns in. Allow at least two weeks for a used cable - a month for a new cable.\n3) It requires the type of personality that enjoys fiddling and tweaking. After all, this is a hobby. A hobby should be fun.\n4) Be prepared to be not impressed with each purchase. Or each new tweak,\n5) Be prepared to take a loss on re-selling gear that doesn\u2019t work out.\n5) Upon enjoying this hobby for 20+ years, I think the most important place to start is with\nclean power\n. The archives for the AudiogoN discussion forums are filled with a wealth of knowledge.\n6) Re: Optimizing vs Buying new gear. Buying new gear does not automatically mean better SQ. It could just be different. New components also need to synergize well with each other. This is where trustworthy dealers can help out.\n7) And of course, the room itself is extremely important - as well as the speaker placement. Many, many variables.\n8) Your level of expectations. Are you trying to reproduce the sound of real acoustic instruments? Singer/songwriters? Grunge rock? Electronica/trance? Head-banging?\n- - - -\nGood luck on your audio journey!\nglennewdick\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,011 posts\n12-09-2024 at 07:10pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\ni'll add to your comment with fix/treat your room. your room is half what you hear or more.\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n12-10-2024 at 01:13am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI discovered the basic principle of minimal acoustic satisfaction level :\nUpgrade the component to a good synergy level in relation to your budget...\nWe must buy a minimally well designed system to begin with ...\nThen forget all others upgrade proposition especially the costlier one...\nA---Begin to experiment with basic acoustics ( not only absorption-reflexion-diffusion but with Helmholtz resonators use) and psycho-acoustics concept ( crosstalk-crossfed mechanism etc ) ...\nB---- Experiment with vibrations control...\nC---- Experiment with electrical grid optimization and EMI control etc\nD---- read about unusual \"tweaks \" for example Schumann generator but only after you had taken the stage A-B-C very seriously ...\nWhy this road is the only one ?\nBecause any evaluation of gear acoustic potential effects\u00a0 had no value nor meaning in a speakers/ room which is not under your control, you cannot know the acoustic quality level of your experience in a non controlled system... Period...\nAny other road is consumers programming by upgrade according to taste (subjectivists) or according to specs measures (objectivist)... But these upgrades by taste or measured specs made no sense or are illusory in a non controlled system , mechanically, electrically and acoustically ...\nBecause in a non controlled room with a non controlled system , there is no way for you to know the real potential S.Q level of your actual gear or the upgrade one, even if the upgrade is really a good choice ...This last fact induce people to be satisfied with no acoustic control of their room because their system satisfy them but they will ignore the the true quality level in an optimized speakers/room...\nWhen this is done you are so happy you read no more publicity about audio, you listen music in ectasy and you pity most people with very costly system instead of envy or jealousy...\nWhy ?\nBecause even if my low cost system can be upgraded with a better one for sure (and i know with what and how) i am so proud of my actual S.Q. with a 1000 bucks system done right that i will not buy anything else just to prove that hi-fi satisfying experience cost nothing if we understand what to do ...\nI learn it alone almost because most threads promote costlier upgrades nothing else...\nI promote acoustics experiments ...\njond\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,109 posts\n12-10-2024 at 02:02am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTo me this is very much an it depends question. What gear do you have and what improvements in sound are you looking for. If you want a sea change cables and ancillaries may not get you there. But if your mostly happy they can get you that final step closer.\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n12-10-2024 at 02:37am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCables is the last thing you must be interested in...\nIf not throw money in a useless well...\nI say that not bec","title":"Optimize or buy new gear..?","url":"https://forum.audiogon.com/discussions/optimize-or-buy-new-gear"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n191985-2065\nEdit\nWhat are your thoughts about the new Rega Nd7 Moving Magnet Cartridge?\nI currently use Moving Coil technology myself.\nLatest purchase was a Lyra Delos at almost $2K.\nThere is always a debate over MM vs MC.\nTracking weight seems a bit high at 1.75 grams. (hard on the music source??)\nI wish they would use the Solid Boron Whisker in lieu of the bent, folded, aluminum cantilever.\u00a0 I believe the Boron tracks better?\nAt $800 dollars it's not inexpensive, but I wonder if anyone has tried one yet?\nYour thoughts??\nThanks!\nquincy\n11-16-2024  6:45pm\n2 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nglennewdick\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,011 posts\n11-18-2024 at 05:38pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n\"Tracking weight seems a bit high at 1.75 grams.\"\nnot really hi at all about average.\u00a0 1.5-2.5g seems to be the normal range. And wont damage your records.\nquincy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n487 posts\n12-03-2024 at 08:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGeez, I track at 0.75 gram.\u00a0 I've never owned a cart tracking that heavy...\nMore to discover\nQuestion about Shipping\nQuestion about BNC to RCA adapters?\nBasic question about impedance and watts\nIts all about the experiance\nQuestions about VPI TNT-MK-IV Platters\nAurender N100H\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"What are your thoughts about the new Rega Nd7 Moving Magnet Cartridge?","url":"https://forum.audiogon.com/discussions/what-are-your-thoughts-about-the-new-rega-nd7-moving-magnet-cartridge"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192169-34284\nEdit\nSeller Question - I need UPS to come get these large speaker boxes - how to manage that?\nJust like the subject says: I cannot fit these large speaker boxes in my vehicle. UPS and other shippers will come get packages often for a small fee - often for free. How do I - as a seller - make sure that gets into this business transaction if I sell these on Audiogon? I want the buyer to pay for shipping. Is this possible on this site?\ndavid_l\n12-01-2024  7:10am\n12 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nroxy54\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n8,245 posts\n12-01-2024 at 02:29pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nOf course you can ask the buyer to pay for shipping. Everything is negotiable.\nfastfreight\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,326 posts\n12-01-2024 at 02:31pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nRegardless of who purchases the shipping label, the size, weight and location of the items all play into the pricing.\ngrislybutter\nDetails\nDiscussions\nPosts\nThis discussion\n3,627 posts\n12-01-2024 at 03:02pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI truly appreciate that you don\u2019t have a giant car or truck.\nYou can choose shipping with local pickup.\ncurtisvill\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n78 posts\n12-01-2024 at 03:21pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nUPS will pickup from you if you schedule it.\ncarlsbad2\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,036 posts\n12-01-2024 at 06:05pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI just include shipping in the price.\u00a0 Buyers like seeing a number and knowing that is the full ammount they pay.\u00a0 so figure out a number and just add it to the price and put in free for shipping.\u00a0 Price is $xxxx, shipping to contininental US included.\nlalitk\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,196 posts\n12-01-2024 at 06:40pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDo not ship large speakers through UPS or FedEx ground \u00a0unless they are in wooden crates. You are taking a risk and it\u2019s a 50/50 chance that they will get to their destination in one piece. Both UPS and FedEx are not equipped to handle large packages. For large speakers, always use freight with speakers tied to a pallet or offer local pickup.\ngramophone_canada\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n82 posts\n12-02-2024 at 05:24am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPlease note, there is FedEx and FedEx freight. Same with UPS - there is a weight and size limit for UPS and FedEx - you might put the speakers on a shipping pallet (skid) Pallets come in different sizes so choose a size which will accommodate the speaker boxes, but not too big as that raises your shipping costs. You'll need to strap the boxes to the pallet and I would wrap the boxes with a vinyl wrap to protect the boxes from moisture. You need to give FedEx freight the dimensions and the weight of the pallet. Some sellers need to pack the pallet outside their house - this is not a service that FedEx does for you. You might have to pay for a tailgate at both ends and there is usually an extra charge if you are collecting or shipping into a residential address. You'll be shocked at the cost of shipping.\ncuriousjim\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,165 posts\n12-02-2024 at 01:28pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDepending on the size and weight, you might want to consider using a common carrier. \u00a0I have used Estes several times with good results.\nAll the best.\nmariddock\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n34 posts\n12-02-2024 at 02:10pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf possible, if you want to palletize the speakers, make sure you pack them on their sides with the speaker cones facing each other and that should at least protect them. Make sure you plastic wrap the entire pallet before shipping.\nwfowenmd\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n121 posts\n12-02-2024 at 03:05pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019ve shipped large boxed, high value speakers, electronics (RTR player, amplifiers), rare tubes, and turntables using a white glove delivery service (aka\u00a0courier service). Several choices are available online; will transport across CANUSA); and insured. They are more equivalent in price to the commercial shippers using pallets, but I offer it to the buyer as an option and incorporate it into the sale price.\nrick_n\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n491 posts\n12-02-2024 at 04:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGet a quote from XPO Logistics and make sure insurance is included in the price.\nchenry\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n303 posts\n12-02-2024 at 06:04pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nUPS has a LTL freight subsidiary (they bought Overnite). Check their website for their range of services. I know at one point they would collect, pack, and pallet and ship large items. Costs are determined by volume, number of pallets required, weight and distance and pickup and delivery services. It sounds as if you need a full-range inside delivery service (i.e., not a shipping dock or curbside delivery.) There are also freight broker companies online that will schedule a carrier for you. I have used similar companies for delicate, expensive and bulky medical equipment shipping. An alternative is a conventional moving company that accepts LTL shipments (used in excess space aboard moving vans.)\nMore to discover\nHow to restart tube amp and pre in bo...\nSource for vinyl record storage boxes?\nCan anyone recommend a printable labe...\nWhy do amp A-B switch-boxes have a wa...\nStorage boxes. Can I discard high end...\nFocal 36 MONTH FINANCING\nAntipodes Audio K40\nBricasti M5\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Seller Question - I need UPS to come get these large speaker boxes - how to manage that?","url":"https://forum.audiogon.com/discussions/seller-question-i-need-ups-to-come-get-these-large-speaker-boxes-ho"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n191763-196716\nEdit\nSunfire Load Invariant Amp Filter Cap Replacements\nIf anyone has successfully replaced the filter capacitors on this amplifier, would you kindly share the specifications on the new filter capacitors?\u00a0 Original filter caps I am looking to replace are a phillips 9300 uf 150 v x 2 capacitors. Sourcing capacitors with the same dimensions is proving to be a bit difficult (not a lot of room to work with in the mounting area. Thank you kindly.\nmbrusso\n10-23-2024  8:59pm\n8 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nrodman99999\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,207 posts\n10-29-2024 at 05:06pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIs there a Phillips part # on those caps?\nThey may have been manufactured specifically for Carver.\nLong, skinny caps (such as Carver seemed to like) can be hard to find, sometimes.\nPost removed\nOct 29, 2024\nrodman99999\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,207 posts\n10-30-2024 at 11:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHere's a thought: Two of something around 4700uF/150V (MUCH easier to find), in parallel, to replace each 9300uF cap.\nJust a slight bump in capacitance, which never hurts, in my experience.\nThe tricky part is fitment in the chassis.\nIf you can find some small enough, in at least 150V and mount/wire them with their terminals facing each other (save some room?); you'll be golden.\nI just picked 4700uF because Newark has 176 caps, of various voltages/dimensions, in that value.\nhttps://www.newark.com/c/passive-components/capacitors/aluminium-electrolytic-capacitors/snap-in-screw-terminal-aluminium-electrolytic-capacitors/prl/results/2?capacitance=4700uf\nIf they don't have something that fits in stock: get the data and search further for someone that does.\nOf course: there are also a plethora of values that can be combined, to match or exceed the 9300uF.\nrodman99999\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,207 posts\n10-30-2024 at 11:37pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nActually: staggered and stacked, four 4700uF caps should fit easily.\nPerhaps four of these would fit, that way:\nhttps://www.newark.com/vishay/mal220213472e3/cap-4700uf-250v-alu-elec-screw/dp/60AK9812\nPost removed\nOct 31, 2024\nrodman99999\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,207 posts\n10-31-2024 at 12:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHope some of that helps!\nHappy listening!\nmingles\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n801 posts\n10-31-2024 at 03:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMbrusso, what is motivating you to replace these capacitors? Is there a problem with the sound of the amp? How have you determined the capacitors are the culprit for that problem?\nPost removed\nDec 01, 2024\nMore to discover\nMarantz SA-7S1 filters and noise shaper\nReview: ISO 1100va AC filter\nRumble Filter for my Linn LP-12 setup ??\nReview: Shunyata Hydra 2 AC filter\nReview: Running Springs Audio Haley A...\nVandersteen Model 2c ii signature\nAuralic Aries G2.1\nAyon Audio S-10IIxs\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Sunfire Load Invariant Amp Filter Cap Replacements","url":"https://forum.audiogon.com/discussions/sunfire-load-invariant-amp-filter-cap-replacements"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192052-4358\nEdit\nTube amp repairs in the Boston area?\nMy pal has a recent Modwright preamp that has one channel that is not functioning. \u00a0It is likely something simple as it was refreshed by Dan a few years ago but has not been played since then. \u00a0Rather than sending it back to Modwright, can anybody recommend a competent repair facility in the Boston area? \u00a0Thanks for any recommendations.\nwhitestix\n11-22-2024  2:39am\n5 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ndtorc\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n132 posts\n11-22-2024 at 01:50pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI live in the Boston area, and I have used Jim Fuller of Fuller Sound. He works in/with Goodwin's High End in Waltham. He is truly wonderful in terms of the range of equipment he can competently work on. The costs seem reasonable, too.\nTech HIFi (he actually bought the licensing of that iconic name) in Hanson, MA (South Shore) did an excellent job with my all-tube Scott tuner recently. I think they also do good work.\nwhitestix\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n765 posts\n11-22-2024 at 06:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks for the recommendations.\naudioman58\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,646 posts\n11-23-2024 at 12:05am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf you want the best it\u2019s worth maybe a it of travel Radu Tarta in CT has made several amplifiers ,preamps for myself and friends \u00a0not many in North America\ncan match his knowledge base and engineering at Very fair prices !!\nchayro\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,097 posts\n11-24-2024 at 01:05pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPersonally, \u00a0I would call Dan and see if he could diagnose over the phone. \u00a0It may well be something simple as you say, but get his opinion first. If he can\u2019t diagnose it, I would recommend sending it back to him for repair. Unless the tech you know is very familiar with that exact model, IMO, the factory is a safer bet. Take care.\nwhitestix\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n765 posts\n11-30-2024 at 12:55am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGood advice. \u00a0Dan is taking care of my pal\u2019s issue.\nMore to discover\nB &amp; K Amplifier Repairs\nCouple good finds for repairs in Chic...\nChord Hugo needs repairs in US\nBlue Circle Audio Repairs/Service Notice\nKlipsch La Scala diagnostics/repairs\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nFocal 36 MONTH FINANCING\nAuralic Aries G2.1\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Tube amp repairs in the Boston area?","url":"https://forum.audiogon.com/discussions/tube-amp-repairs-in-the-boston-area"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n192089-99308\nEdit\nPiggy-back Furutech ETP60 with  PowerIsolator\nIs it ok to plug a Furutech ETP60 Power Distributor into a Transparent Gen 5 PowerIsolator?\ncantorgale\n11-24-2024 11:09pm\n0 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nMore to discover\nFurutech Pro. 168f information?\nFurutech XLRs--shape of solder points?\nFurutech RD-2 vs. RD-1\n3D Printable: Furutech GTX Style Wall...\nFurutech PC's?\nFocal 36 MONTH FINANCING\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Piggy-back Furutech ETP60 with  PowerIsolator","url":"https://forum.audiogon.com/discussions/piggy-back-furutech-etp60-with-powerisolator"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n191969-197580\nEdit\nHigh pass filter capacitors\nI\u2019m making a high pass filter between my preamp and amplifier. This will be on XLR Interconnects. I need a .047 uf value .\nLooking for recommendations on what capacitor to use to have a good quality filter. I don\u2019t want to spend lots of money on a new preamp and trash it with low quality caps. I also don\u2019t want to spend $300 per cap if it\u2019s not necessary.\ndahodevil\n11-15-2024  3:49am\n9 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\njaytor\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n781 posts\n11-16-2024 at 04:15pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI'd recommend the Miflex KPCU-03. Very nice sounding cap. I've used it for this same purpose.\ngdaddy1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n549 posts\n11-16-2024 at 04:16pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhy are you doing this?\njaytor\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n781 posts\n11-16-2024 at 04:20pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf you're willing to spend more (unfortunately considerably more), many consider the VCap CuTF the best sounding audio cap available.\ngdaddy1\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n549 posts\n11-16-2024 at 04:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf the goal is to\u00a0\"Remove the main speaker woofer work\" this mod will probably do more harm than good. Especially adding phase shift to the upper frequencies. This affects the imaging and soundstage as well.\nPaul McGowen discusses in this video.\nhttps://www.youtube.com/watch?v=nmZTXn2NHLY\ndahodevil\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n30 posts\n11-16-2024 at 04:50pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWhy are you doing this?\nI have GR Research NX Studios. (Bookshelf)\nThey can\u2019t handle below 70 hz.\ndahodevil\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n30 posts\n11-16-2024 at 05:08pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\ngdaddy1\nThanks for the video. I haven\u2019t seen that one.\nI\u2019m hoping this is not the case here.\nDanny Richie designed these speakers and suggests to do this if playing at louder levels.\nI have them with an AV processor with its internal crossover cutting the lows to the bookshelf speakers. They sound amazing to me. Very deep and wide sound stage.\nMy plans are to upgrade to a BHK pre used in bypass for the AV system.\nThis will require a filter on the pre output.\nAny suggestions welcome.\nI will check out the Miflex caps \u00a0 Thank you.\ndahodevil\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n30 posts\n11-16-2024 at 05:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019ve look at the vcaps. I\u2019d need 4 on XLR lines. \ud83d\ude2b$$\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n11-16-2024 at 05:11pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIn this range of capacitors, there are a number of excellent brands of caps for far less than $300.\nAudyn TruCopper, and even some excellent\nDuelund models like this one\nI strongly recommend you practice however using like $2 poly caps first, just to make sure you have the right values and wiring.\nAlso, I think Parts Express has some modular XLR adapters.\u00a0 They are like M to F adapters but you can shove little parts inside. Perfect for this type of prototyping.\nrodman99999\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,207 posts\n11-22-2024 at 06:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIt's been decades, but- when I needed high quality, small value caps, for doing exactly what you are (using a Placette and/or Dahlquist DQ-LP1): Michael Percy was my go-to, for the best parts available.\nHe also offered a wealth of valuable information.\nCan't even swear if he's still in business.\nBUT:\nhttps://www.percyaudio.com/Catalog.pdf\nHappy listening!\nMore to discover\nMarantz SA-7S1 filters and noise shaper\nReview: ISO 1100va AC filter\nRumble Filter for my Linn LP-12 setup ??\nReview: Shunyata Hydra 2 AC filter\nReview: Running Springs Audio Haley A...\nAuralic Aries G2.1\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"High pass filter capacitors","url":"https://forum.audiogon.com/discussions/high-pass-filter-capacitors"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n191769-134\nEdit\nInteraural Crosstalk And Loudspeaker Setup\nWhen listening to two channel stereo audio reproduction sounds from the right channel loudspeaker are heard by both the listener's right ear and left ear.\u00a0 Sounds from the left channel loudspeaker are similarly heard by both the listener's left and right ear.\u00a0 This fact has been labelled interaural crosstalk.\nHere's a brief discussion of it from the Steve Hoffman forum.\nInteraural crosstalk can be enhanced or diminished via electronic means and even by the physical design of the loudspeaker.\u00a0 Can it also be accomplished via loudspeaker placement and acoustic treatments?\u00a0 Toe-in could be a tool, but I'm thinking of a setup I saw back towards the end of the last century.\u00a0 I remember visiting a retailer who had a large acoustic panel, maybe 6 ft by 6 ft, that was supposed to be placed between the loudspeaker, but perpendicular to the plane of the loudspeakers.\u00a0 The idea was that the panel would lessen the crosstalk at the listener position.\u00a0 I never heard a demo of the product so I have no idea if or how well it worked.\nDoes anybody have experience with setting up their listening space in this manner?\u00a0 If so, what did you think?\u00a0 BTW, I've look at near countless virtual system pics and I've never seen this layout.\u00a0 That should tell me something, but maybe not.\nonhwy61\n10-24-2024  3:13pm\n12 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nerik_squires\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n17,637 posts\n10-24-2024 at 03:19pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy one observation is that the systems with the largest sweet spots and most stable image have very wide and even dispersion/power response.\u00a0 Perceived imaging is enhanced by diffusion between the speakers and even to the sides. It's not L/R crosstalk that I've heard mess up imaging so much as poorly managed in room reflections and gnarly off-axis response.\nAlso, digital has nearly perfect L/R isolation vs. analog systems and yet they don\u2019t really image much better IMHO. Some studies have suggested ~65 dB separation to be more than adequate.\nI guess my point is, while interaural crosstalk is a real thing it\u2019s not really the problem we might think it is. The bigger issue is probably frequency cancellation in the center, making center channel speakers really useful for movies and 3 channel recordings as well as mono.\nglennewdick\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,011 posts\n10-24-2024 at 07:30pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nwhy is this a concern ? try a headphones i suppose.\nHumans have evolved to hear from both ears at the same time thats how we localise things. you may just make it worce. we can tell distance, angle to sound, etc from the different time the audio araives at each ear. I think your just going to confuse your ear brain interface.\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n10-24-2024 at 07:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy room is under my acoustic mechanical control...\nMy speakers heavily mechanically modified too...\nI also use a mechanical separation between the 2 speakers for my near listening situation...(unpractical for most people.)\nI remember visiting a retailer who had a large acoustic panel, maybe 6 ft by 6 ft, that was supposed to be placed between the loudspeaker, but perpendicular to the plane of the loudspeakers. The idea was that the panel would lessen the crosstalk at the listener position. I never heard a demo of the product so I have no idea if or how well it worked.\nIf you want to know about crosstalk read articles by Edgar Choueiri the Specialist of this concept in audio ...\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n10-24-2024 at 07:45pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHumans have evolved to hear from both ears at the same time thats how we localise things.\nIn Nature we hear one sound source for the melody of a bird for example.\nIn a living room with speakers we hear 2 sound sources for the same melody which impede the naturalness and information of spatial dimensions of the perceived sounds.\n2 speakers stereo are unnatural situation .\nIn a word for our brain deciphering our 2 ears channels there is 4 speakers in the room:2 actual and 2 virtual because of the time interaural differential function.\nChoueiri explain it all and his mastery of the subject is complete. Read him.\nrbstehno\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,653 posts\n10-25-2024 at 02:16am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nEvery room sounds different depending on diffusion panels and absorption panels, corner traps, and reflection treatments, which can be either absorption or diffusion. Done right, it allows your system to be able to sound its best. If you buy these treatments, you could be looking at many thousands of $$$ of treatment, at least that is what it cost me; but well worth it\nntpc4\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n45 posts\n10-25-2024 at 12:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPolk SDA\nline of speakers mitigates interaural crosstalk.\nwaytoomuchstuff\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,278 posts\n10-25-2024 at 02:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nInteraural Crosstalk\nAny conversation involving someone between the ages of 13-19 years old?\nmahgister\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15,063 posts\n10-25-2024 at 03:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHere the 3 main negative effects as described by Dr. Choueiri numerous articles :\nEffects of Crosstalk\nDegraded Localization\n: Crosstalk interferes with the precise localization of sounds that occurs naturally due to slight differences in arrival time, amplitude, and tonality between the ears\nTonal Distortion\n: Choueiri notes that crosstalk can severely impact tonal accuracy, stating \"Tonally, it was a mess. A piano sounded like a xylophone.\"\nReduced Spatial Realism\n: The presence of crosstalk diminishes the spatial realism of recordings, preventing listeners from experiencing the full three-dimensional soundstage as intended.\u00bb\nhttps://www.theabsolutesound.com/articles/theoretica-applied-physics-bacch-sp-adio-stereo-purifier/\n8th-note\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n484 posts\n10-25-2024 at 03:19pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI have never seen or heard of the setup you describe with a baffle between the speakers but I have experimented with several electronic gizmos that are designed to address this issue.\nMy favorite is a discontinued product called a BSG QOL processor. This unit goes between the preamp and the amp and it adds a significant illusion of depth to the soundstage. One of the nicest things about it is that you don't have to have your head in a vice to get the effect. I use it all the time - it makes virtually everything sound better. I bought a second one in case it fails. It got good reviews in Stereophile and TAS. They come up ocassionally on the used market and sell for a few hundred dollars (it retailed for $4K new).\nI also have a Carver C-9. It works well to add depth and detail to the soundstage but you have to set it up carefully and you hav","title":"Interaural Crosstalk And Loudspeaker Setup","url":"https://forum.audiogon.com/discussions/interaural-crosstalk-and-loudspeaker-setup"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n191931-2195\nEdit\nImpressions from Capital Audio Fest\nOpening up a thread for people to share their impressions. I am particularly interested in the Triangle Arts Metis speakers\u2026 But that\u2019s just me. Please post your impressions here.\npeter_s\n11-10-2024  1:21am\n3 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\njond\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,109 posts\n11-10-2024 at 08:34pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHi Peter I thought Triangle Art sounded quite good they were playing some goofy sounding whimsical percussion music. As I said to my friend the music suits this silly blinged out room but damn it sounds good.\njaytor\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n781 posts\n11-14-2024 at 04:26pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI was with a friend that was very interested in these speakers, so we had a private after-hours demo for about a half hour and listened to a number of different types of music.\nI am generally not much of a fan of horn speakers, so keep that in mind.\nThe Triangle Art speakers sounded very nice on many music genres, particularly instrumental jazz and classical. They did ok with male vocals, but I really didn't like the way they handled female vocals. The voices sounded very unnatural to me. I don't really know how to describe it, but they sounded kind of honky on this material.\nDeep bass was not as tight and natural as I like either, but this could easily have been the acoustics of the room.\nMy friend decided to pass on these, even though these were one of the speakers he was strongly considering (I think based on reviews) before attending the show.\ng2the2nd\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n385 posts\n11-14-2024 at 05:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nCAF Standouts:\nOdyssey Audio top of the line floor standers driven by Stratos mono blocks. Klaus\u2019 room was full of plants and e-candles to set the mood.\nMBL room - The performance is in your room\nFocal Grand Utopia Evo - They played a Yellow track that sounded awesome.\n9 ft tall Soundlabs driven by LTA amps - I heard some great jazz there.\nMore to discover\nReview: Townshend Audio Speaker Podiums\nAudio Note Kit 3 AMP\nRecent Evaluation of the Home Audio S...\nWalker Audio Silver jumper vs Nordost...\nAntipodes Audio - K22 G4\nAuralic Aries G2.1\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nAyon Audio S-10IIxs\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Impressions from Capital Audio Fest","url":"https://forum.audiogon.com/discussions/impressions-from-capital-audio-fest"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n175069-71480\nEdit\nAnyone using Teddy Pardo XPS for Naim nDAC and Teddy Cap for the Supernait 3? Any good?\nMy system : Oppo BDP105D Universal Disc player/Transport > The Chord Signature Super Digital Coax Cable BNC > Super Lumina DIN5-5 DIN >Supernait 3 > NACA A5 Speaker cables > Totem Forest Signature Speakers.\nI\u2019m looking to upgrade the Supernait 3 and the nDAC with outboard power supplies. With Naim\u2019s recent price hike I\u2019ve been scouring the net for good pre-love gear. Not a lot of inventory in the US and if the is a candidate is the 13 years old and on the brink of a refresh.\nDoes anyone have any experience with Teddo Pardo products in Isreal? Is the voltage compatible, how was the shipping experience? My biggest concern is with the voltage match-up. If any one has used the Pardo products and tested them directly with the Naim brand was their a difficult in PRaT? Any assistance you have is greatly appreciated.\nnutty\n02-17-2022  8:23pm\n17 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nfuzztone\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,651 posts\n02-18-2022 at 04:59am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nPardo yes. Fast fulfillment, high quality, great value.\nNo Naim experience other than audition.\nnutty\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,660 posts\n02-18-2022 at 02:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThanks fuzztone - The main reason I'm looking beyond Naim is due their 2022 price increases. Wow! I still think their Naim HiCap is affordable but I can justify retail on an XPS DR or larger.\nHoping for more replies.\nceltic66\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,974 posts\n02-19-2022 at 10:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nMy only experience with Pardo is their upgraded PS for my Naim UnitiServe music server and it was a discernible improvement in all ways.  Ran that for two years before upgrading the server.  He has it all figured out.\nnutty\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,660 posts\n02-20-2022 at 04:16am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nthank you celtic66\nAfter doing pleanty of internet research and speaking to them they seemed on the up. I ordered a Teddy Pardo XPS for my nDAC today. Looking! forward to receiving it.\nbobbyrowett\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2 posts\n06-18-2022 at 08:26pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI am considering the TP XPS for the same setup. I already have a teddycap in the SN3 and have been enjoying the improvement. How do you like the Pardo XPS on the nDAC?\nsksos\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n162 posts\n06-18-2022 at 10:34pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI use a TP LPS for my Nucleus with great success. Another unit was ordered for a customer and shipped this past Thursday and it should be delivered by Tuesday! Fast and relieable on all accounts.\n(Dealer disclaimer)\nnutty\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,660 posts\n06-19-2022 at 12:35am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThe Teddy Pardo XPS really delivers on the nDAC, in my experience, especially for the price. The Pardo Burndy is good but I'm reading Naim's is better but expensive.\nI have both Naim's and Teddy Pardo's 4 and 5 pin SNAIC's. The TP's are more dynamic! but the Naim's are more natural and musical - more Naim like.\nThe right power cable can make the Pardo units better.\nLast month I installed Synergistic Research Orange fuses in the TeddyCap SE and the Supernait 3.\nnutty\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,660 posts\n07-02-2022 at 12:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI upgraded the Supernait 3 and the Teddy Pardo TeddyCap SE with the Synergistic Research Purple fuses. I favor the Purples sonic signature over the Oranges.\njjss49\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,943 posts\n07-02-2022 at 02:43pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\ni use the teddy cap in my naim xs2, it makes a significant difference in sq - greater ease of presentation, yet added clarity, reduced grain\nfor naims i think these upgrade linear power supplies are important as the gear is designed to take full advantage of them\njmfinney\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n114 posts\n07-02-2022 at 03:00pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nNo Naim experience, however, I have several Teddy Pardo power supplies that I\u2019m quite pleased with. Excellent customer service, well built, fair pricing & fast shipping.\nnutty\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,660 posts\n07-02-2022 at 07:23pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\njjss49 - I agree completely! What power cable are you using on your TeddyCap? I\u2019m using Teddy Pardo\u2019s complimented with Furutech\u2019s FI-50 Rhodium, stainless steel and Carbon Fiber plugs. Coupled with the SR fuses my preamp section of the Supernait 3 is performing at a very high level.\nI\u2019m also using the Teddy Pardo XPS power supply on a Naim nDAC with great success. Also using a Teddy Pardo power cable there.\njmfinney - I also agree with you!!\nnutty\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,660 posts\n07-07-2022 at 04:10am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nToday I ordered a Synergistic Research Purple fuse for my Teddy XPS.\nnutty\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,660 posts\n07-08-2022 at 09:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nToday I ordered a Synergistic Research Purple fuse for my Naim nDAC. The Oppo BDP105D's fuse is not accessible.\nbrandonfin\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n15 posts\n09-08-2022 at 04:50am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@nutty\nwhat\u2019s been your experience with the Synergistic Research fuses? I\u2019m thinking of getting either orange or purple for the nDAC and Supernait.\nHow much of an impact was there when you added it in to the XPS?\nnutty\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,660 posts\n09-11-2022 at 07:22pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nbrandonfin - In my experience the Synergistic Research fuses are a worthwhile upgrade in both the Supernait and the nDAC.\nIn my experience, the Oranges offer 3d holographic imaging but less low frequency extension. I prefer the Purple fuses as they offer a more overall coherent neutral sound. Great extension at both frequency extremes.\nI'm currently auditioning the Shunyata Delta XC v2, 10g and their X EF, 10 g power cables in addition to Synergistic Research Foundation 10 g and 12 g on the Naim and Teddy Pardo electronics. Both offer excellent performance!\nThe Synergistic Research fuses have a 30 day return policy, what do have to lose?\u00a0 ;^)\nGood luck\nryder\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,774 posts\n09-16-2022 at 05:52am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nGenerally,\nTeddy Pardo PS for refined, detailed and nuance\nNaim PS for drive and dynamics\nMy experience was with Naim Hicap DR and Teddy Pardo Dual Teddycap on NAC 202 and NAC 282.\nknownothing\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,830 posts\n11-14-2024 at 03:31pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI am using a Teddy Pardo Dual 5V, 2A power supply to d","title":"Anyone using Teddy Pardo XPS for Naim nDAC and Teddy Cap for the Supernait 3? Any good?","url":"https://forum.audiogon.com/discussions/anyone-using-teddy-pardo-xps-for-naim-ndac-and-teddy-cap-for-the-supern"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n191952-2439\nEdit\n1200AS2 Amp Board Voltage\nI see that the 1200AS2 will accept a voltage range of 100 - 240 Volts. Could I hook the board to a 220 Volt line so it won't run out of power from the wall?\nkoestner\n11-13-2024  7:20pm\n1 response\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nkoestner\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n742 posts\n11-14-2024 at 01:53pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSorry, the 1200AS2 is the Ice Edge board from B&O that can be gotten through Parts Express.\nMore to discover\nCallisto 2200 Cirucit Board\nSeeking Wadia 16 Server Board\nGFP-750 - blue v. red circuit boards\nComputer audio vs outboard DAC for Wi...\nAdvantages with an outboard power sup...\nBricasti M5\nAurender N10\nVandersteen Model 2c ii signature\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"1200AS2 Amp Board Voltage","url":"https://forum.audiogon.com/discussions/1200as2-amp-board-voltage"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n191830-197401\nEdit\nConverting a vintage Parasound HCA-1200 from 117VAC to 230VAC\nI have posted this information at the end of a somewhat related thread, but thought that it also made sense to put it \"on its own\" where Google can find it more easily.\nI own a Parasound HCA-1200, purchased in the mid 1990s in the USA, which was designed for 117VAC, and is marked that way on the back of the unit. I now live in Germany where the line voltage is 230VAC, and have been operating the amplifier using a voltage conversion transformer. I got tired of that and decided to convert the amplifier to operate directly off 230VAC.\nThe good news is that the power supply torroidal transformer has two primary windings, which are wired in parallel to run on 120VAC. To convert the amplifier to run on 230VAC is very simple: rewire the primary coils in series. Here are the steps, which closely parallel those above.\nWARNING: I ASSUME NO LIABILITY FOR THE INSTRUCTIONS BELOW. IF YOU DO NOT HAVE EXPERIENCE WITH ELECTRICAL WORK AND ELECTRONICS, AND DO NOT KNOW HOW TO WORK SAFELY WITH LETHAL AC VOLTAGES, DO NOT ATTEMPT THIS. FIND SOMEONE QUALIFIED TO HELP YOU.\n(0) Remove power from the amplifier and open it up.\n(1) Locate the transformer primary wires. These come from the transformer in a bundle of four wires, which are black, red, clear and yellow. (The clear insulation is transparent.) You are not going to touch any other wires than these four! The red and clear wires are connected together to the mains power coming from the front panel power switch. The yellow and black wires are connected to the central (power supply) circuit board near a 10 ohm 30 watt resistor.\n(3) You are going to leave the red and black transformer primary wires connected as they are.\n(4) Disconnect (unsolder or cut) the clear transformer primary wire from where it is connected to the red wire and the incoming electrical power.\n(5) Cut the yellow wire near the power board. Fold over the end of the stub of yellow wire coming from the power board and put some heat shrink tubing over it to prevent it from shorting against anything.\n(6) Strip some insulation from the yellow wire coming from the transformer, and use a sharp knife to scrape off the insulation varnish.\n(7) Solder the yellow wire to the clear wire. Insulate with heat shrink tubing.\nThat\u2019s it! If you want to test this in a safe way, I put a 100 - 200W incandescent bulb in series with the power plug when you plug it in. The lamps will flicker from startup current then should dim and the amp front panel lights should light up.\nHere is a schematic, the relevant part is the power supply transformer wiring in the bottom left. (The schematic in the forum has the wrong aspect ratio, but if you download it in a separate window it is correctly proportioned.)\nBest regards,\nBruce\nPS: if someone here can tell me how to bias the output devices, I'd be grateful.\u00a0 What is the correct bias voltage on the 0.33 ohm emitter resistors?\u00a0 I have found this online for all the Parasound amplifiers APART from the HCA-1200.\nbruceallen\n10-30-2024  5:33pm\n1 response\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nbruceallen\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5 posts\n11-10-2024 at 01:30pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nFor the record, I found the Owners Manual for the amplifier, and it contains rewiring instructions which are consistent with what I have described above. I am including those below.\nIn addition, I found a Service Manual which I was sent in 1993. This shows that the bias current should be adjusted to get 6-10mV across the emitter resistors, presumably when the amp is at operating temperature.\nI will try to post a copy of the service manual online. If someone wants a copy, and can\u2019t find it with a Google search, please write to me.\nMore to discover\nConverting a vintage Parasound HCA-12...\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nRSX MUSIC SERVER RSX MUSIC SERVER\nAurender N100H\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Converting a vintage Parasound HCA-1200 from 117VAC to 230VAC","url":"https://forum.audiogon.com/discussions/converting-a-vintage-parasound-hca-1200-from-117vac-to-230vac"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n191853-5544\nEdit\nhow come im having such a hard time\nwith syncing up my sony tv and external speakers going thru an arcam surround receiver ? does anyone have a suggestion?\nsmargo\n11-01-2024  4:36am\n1 response\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nfastfreight\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,326 posts\n11-01-2024 at 06:07pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nare you using optical (toslink) or HDMI ARC from TV to Arcam?\nHave you enabled correct sound output on the Sony TV?\nHave you assigned the proper audio input (ie hdmi or optical (toslink) to the input you are using on the Arcam?\nJust a few thoughts...\nMore to discover\nI am having BIG problems with my ARCA...\nIs hdcd worth having ??\nAnyone having trouble loading Web sit...\nAnyone having problems clicking on ad...\nAuralic Aries G2.1\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"how come im having such a hard time","url":"https://forum.audiogon.com/discussions/how-come-im-having-such-a-hard-time"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n191768-197213\nEdit\ncary audio sli 80 signature diy upgrades\ngood morning im thinking of upgrading my sli i80 signature and trying to find out what are the specs of the\nHexfred Rectifiers that carry offers. I have tryed to get the info directly from cary with no luck. thank you\nkufcio2076\n10-24-2024 11:41am\n2 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\ntestpilot\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,020 posts\n10-24-2024 at 11:32pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTry contacting Upscale Audio as they use to commission a special F1 edition of \u00a0the SLI-80 which had a series of upgrades over the standard, including Hexfreds.\nkufcio2076\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4 posts\n10-25-2024 at 09:49am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nok I will try that thank you\nMore to discover\nCyrus Signature Phono preamp, anyone ...\nKEF R3 or Totem Signature One\nAcoustic Signature Calypso/ Rega 301 ...\nLegacy Signature SE for 2 Channel\nReview: TAD (TubeAudioDesign) TAD 150...\nRSX MUSIC SERVER RSX MUSIC SERVER\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nAurender N100H\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"cary audio sli 80 signature diy upgrades","url":"https://forum.audiogon.com/discussions/cary-audio-sli-80-signature-diy-upgrades"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n147090-109580\nEdit\nHFT High Frequency Transducer\nIs any body experiment with these tweek, that treat the listening room ?\u00a0 5 of these would supposed to give an improvement.\u00a0 Do we have to continue to 15 or 20 ?\u00a0 Because they are not cheap !\naudiosens\n03-01-2019  7:40pm\n19 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nfolkfreak\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,349 posts\n03-01-2019 at 07:59pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAll the answers you need can be found here -- and yes there are benefits to more\nhttps://forum.audiogon.com/discussions/synergistic-research-hft-s?highlight=HFT\nBut you could make your own :-)\ndavidpritchard\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n866 posts\n03-01-2019 at 11:09pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\naudiosens:\nI use the Synergistic Research HFT's in my listening rooms. This is after trying to go the more traditional way of improving room acoustics with GIK acoustic products.\nFor me the advantages of the HFT approach is: easier to install and to dial in the optimum location of the devices, they are not visually distracting, and if you move you can easily take them with you.\nSince they come with a 30 day trial, I think many audiophile rooms would benefit with an audition. and if you do not like them the cost to return them is under ten dollars. It is a fun and educational\u00a0 weekend experiment.\nDavid Pritchard\naudiosens\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n239 posts\n03-02-2019 at 01:35pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nfolkfreak.\u00a0 But you could make your own :-) ...\nWhat is the recepe ?\u00a0 Is it easy to make ?\nfolkfreak\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,349 posts\n03-02-2019 at 03:39pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHow to make your own, try a search like this\nhttps://forum.audiogon.com/search/index?utf8=\u2713&query=DIY+hft\naudiosens\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n239 posts\n03-02-2019 at 06:12pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nfolkfreak;\u00a0 it is crazy how a little copper bell can make huge improvement.\u00a0 Also \"acoustic resonator\" are in the same shape.\u00a0 May be if they were 10 times less expensive, they would sell ten times more ?\nmillercarbon\nDetails\nDiscussions\nPosts\nThis discussion\n12,531 posts\n03-02-2019 at 07:09pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDIY? Yeah, uh, no. Not even. And you know something is true when it comes from someone who really, really wants it to be otherwise. Because these things work so well, and I really, really, REALLY wanted to be able to make a bunch and save myself a few grand. Really. And its not like I haven't done stuff like this before. I've made my own active shielding, which on the speaker cables and interconnects works about as well as the SR, which I know because I have the SR Active Shielding too. Unfortunately with HFT's its a lot harder than the copy cats make it out to be.\nHaving access to x-ray it is easy enough to see what's going on with these things without taking one apart. None of the DIY attempts comes even close to Ted Denny's design. All they do is mimic the shape. What they leave out is what's inside, what probably (near as I can figure) generates dither.\nSo if you want what they do you just have to buy them. And lucky you, highend-electronics just started a buy one get one free special on HFTs. I know because I was just ordering some more and they told me about it. They seem to be one of the bigger SR dealers around. Not affiliated, just a guy who believes too many places today get by on getting by and make great customer service rare, so when I encounter it I like to spread the word. And Betty has provided me with some of the best.\nI would start with the regular HFT. You will find even just a single one front and center produces a noticeable effect. My suggestion, experiment with placement. Move it up or down a few inches. They work great and consistently anywhere near where they recommend. But if you listen carefully you will probably notice you are able to tune things like the sparkle on cymbals or the fullness of strings with very small adjustments. You can also try them on your speakers. If you do you may be surprised. One placed near a tweeter moved the whole sound stage back a rather dramatic amount! It was awesome! But unfortunately also lost a lot of presence resulting in a too recessed sounding presentation. Turns out this was NOT one of the recommended placements, and now I can understand why! Lol!\nSynergistic uses the same technology in their PHT for phono and ECT for electronics. Also in their footers. Haven't tried the footers but the PHT and ECT are all extremely effective giving consistently good results everywhere I have tried them. And I have tried them all over my stereo, laptop and video projector. Again, experiment. Only way to know.\nfolkfreak\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,349 posts\n03-02-2019 at 10:31pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@millercarbon\nabsolutely -- DIY is a fools errand but our OP seems constrained in the pocket book \ud83d\ude0f\njust posted\nsome advice on how to further improve the impact of your HFTs, ECTs and so on by optimizing the power to your Atmosphere\u2019s and FEQs ... give it a try\nmillercarbon\nDetails\nDiscussions\nPosts\nThis discussion\n12,531 posts\n03-02-2019 at 11:44pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nEveryone's on a budget. Given enough time and effort most of us eventually realize the biggest bang for the buck is a holistic approach that includes tweaks like HFTs and cones and interconnects and power cords right up there with the more traditionally recognized components like amps and speakers.\nThe thing of it is, there are now so many different products capable of producing so much improvement so cost-effectively that the greatest challenge today is to develop the listening skills and evaluation experience to be able to make effective choices. I mean, look: BDR Cones, SR HFT and Blue Quantum Fuse are all incredible values for the improvement in SQ they deliver. But the only way of proving that, and the only way of knowing which is best for your system in its present state is to, as folkfreak said, give it a try.\nJust be sure to follow Audiophile Rule Number One: Never buy anything you haven't first auditioned, unless it can be returned no questions asked.\nmillercarbon\nDetails\nDiscussions\nPosts\nThis discussion\n12,531 posts\n03-03-2019 at 12:45am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nbtw oops my bad, I got the special above wrong. Its buy 2 get 1 free.\nThe most cost effective then would probably be something like buy one HFT pack of 10, and one Speaker Kit, and get one HFT Wide Angle Kit free.\nThe speaker kits are one kit or 6 per speaker, but I know from experimenting you can get really good results with half that, or 3 per speaker. Actually these things are so effective even just one or two is amazing and really makes the speakers disappear. Guess I will find out next week what a full kit treatment will do!\nthree_easy_payments\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,097 posts\n03-23-2020 at 01:01am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI just wanted to post on this old thread the wonderfu","title":"HFT High Frequency Transducer","url":"https://forum.audiogon.com/discussions/hft-high-frequency-transducer"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n190819-171991\nEdit\nDenafrips Terminator 12th vs. 15th DAC\nHi all,\nHas anyone determined if there is any difference between the Terminator 12th and 15th DAC. Was this done by Denafrips to differentiate themselves from Vinshines involvement and inventory? I recently purchased the 12th from Alvin at Vinshine before the \u201cbreakup\u201d.\nI tried to look at specs of both but do not see any differences other than the number and price. Hard to get info without Alvin involved\nbobbyloans\n07-30-2024  1:19pm\n5 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nhilde45\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,101 posts\n07-30-2024 at 11:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWere there versions for the Terminator 13th and 14th? I smell\nmarketing hype.\nsfgak\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n212 posts\n07-31-2024 at 01:22am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@hilde45\nClearly the Terminator 15th is 25% better than the Terminator 12th. If it was 50% better, they would have called it the Terminator 18th...\ntksteingraber\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n803 posts\n07-31-2024 at 02:46am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDenafrips needs to tighten their lug nuts and soon! \u00a0What the \u2026. is going on!\nbobbyloans\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n101 posts\n07-31-2024 at 03:45am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWell after to a long listening session tonight and no disrespect to them as they have a great product; they need to be clear on the upgrades or we will go \u201csmoke and mirrors \u201c. But no difference between 12-15?? Lol\naudioman58\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4,646 posts\n10-19-2024 at 05:51pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI. Am now selling the Denafrips products , the New Terminator -15\nIs exactly the Terminator12 plus , just look at the 2 even the Oven clock say Terminator Plus Clearly on it . They did a few regulator upgrades and a few small\nupgrades, Just look on the Terminator page Quietly says FlagShip.\nthe plus is or will be discontinued , Denafrips wants to use up the remaining 12+ cases. I did an inspection myself ,the Terminator Gen 15, and 12th+ are Identical\nsave the extra $$ . Nothing more to be said .\nMore to discover\nJay CDP3 or CDT2 + Terminator?\nUpgrade Denafrips Terminator 2\nMola Mola Tambaqui or Denafrips Termi...\nTrans-Fi Terminator Tonearm: 2019 Update\nFinally! A Denafrips Terminator 15th ...\nBricasti M5\nAyon Audio S-10II XS VACUUM TUBE STREAMER\nAyon Audio S-10 II Signature Network Player DAC Preamp\nAWARD WINNING - REMARKABLE!\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Denafrips Terminator 12th vs. 15th DAC","url":"https://forum.audiogon.com/discussions/denafrips-terminator-12th-vs-15th-dac"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n157182-144017\nEdit\nHow to contact Audiogon Support\nAll of the sudden my reply posts are deleted and now posting is suspended.\nKindly explain,\nMich\u00e9lle\njustmetoo\n05-21-2020  4:54am\n31 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\njustmetoo\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n381 posts\n05-21-2020 at 04:55am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWill 'Support' be supporting me?\nPost removed\nMay 21, 2020\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,311 posts\n05-21-2020 at 02:03pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nWow thats a tough one.\nyogiboy\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,232 posts\n05-21-2020 at 02:47pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf your posting is suspended, how did you post this question?\nPost removed\nMay 21, 2020\nPost removed\nMay 21, 2020\njustmetoo\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n381 posts\n05-21-2020 at 07:36pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nJust my thanks to all your helpful suggestions send via PM.\nI can only hope this will not easily happen again.\nSo many thanks again,\nMich\u00e9lle\njustmetoo\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n381 posts\n05-21-2020 at 07:49pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@yogiboy,\nA valid question, what happened is that my posts in some on-off fashion got simply wiped out.\nYet I could start this \u2019emergency\u2019 thread and had one post after which nothing could be posted here or anywhere else any more.\nSounds like the one call you get after being caught in some misdemeanor \ud83d\ude22\nMich\u00e9lle\nPS: it turns out the problem was caused by some overenthusiastic security software. \ud83d\udd10\ndekay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,249 posts\n05-21-2020 at 08:42pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nDid you happen to use the word \"jolly\" in a recent post?\nIf so it triggers a 24 hour \"time out\", and rightfully so.\nDeKay\nPost removed\nMay 21, 2020\nPost removed\nMay 21, 2020\nPost removed\nMay 21, 2020\ndekay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n6,249 posts\n05-22-2020 at 12:38am\nCopy Comment URL\nReport Comment\nEdit\nDelete\njustmetoo:\nSorry I forgot to mention that...\nReferring to adult males as \"lads\" (in this forum) is an automatic Seven day suspension (FYI).\nJust the messenger (don't make up the rules).\nDeKay\ntonykay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,343 posts\n05-22-2020 at 01:05am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf you have questions or issues, use the \"CHAT\" button at the bottom right hand corner of the main page. You'll likely be chatting with Tammy. She is very responsive to questions. Give it a try.\namg56\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n887 posts\n05-22-2020 at 01:30am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@justmetoo\nAmericans write English but a lot of the time I can\u2019t understand them when spoken.\n\ud83d\ude01 \ud83c\udde6\ud83c\uddfa\ntonykay\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n1,343 posts\n05-22-2020 at 02:22am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nyogiboy,\nGood one!\nPost removed\nMay 22, 2020\nPost removed\nMay 22, 2020\nfuzztone\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,651 posts\n05-22-2020 at 03:56am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf south of 39:43 you'd better use y'all 'stead of guys.\nPost removed\nMay 22, 2020\nasvjerry\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n5,194 posts\n05-22-2020 at 06:14am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n\"Curtsy\"....hmmmm....\nSpeaking of strange & unusual customs....(must be something caused by living upside down on the planet....wildfire smoke....momentary lapses of cohesion....*smirk*)\nAll y'all are slumping to delusions....;)\nPost removed\nMay 22, 2020\nisochronism\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,893 posts\n11-14-2021 at 05:06am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nBe sympathetic, life is not easy when one is dumb. I find ebm the most helpful at times. i.e.: it's not that serious. \ud83d\ude44\nchoose000\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4 posts\n02-28-2022 at 05:57pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\na customer made me a offer I accepted his offer.\nhe hasn't responded..how do I resist my cary dvd 7\nchoose000\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4 posts\n02-28-2022 at 05:58pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nis my cary dvd 7 automatically resist.\nI have resist until sold\nchoose000\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4 posts\n10-16-2022 at 04:19am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTammy\nI would like to know how I could get my rating of 100% back\nI sold a proceed Pre Preamp\nI accidentally didn't pack it properly\nBuyer said he heard something rattling\nI apolized to him and told him to send it back\nHe said he had to pay tax and shipping\nI immediately returned 675. threw paypal\nWhen I received the pkg I didn't hear anything loose or rattling\nSeveral days later I heard it and texted him a apoliged\nI was unaware of the shipping cost and taxes\nIf there is anyway I could work this out and get my rating of 100%\nThat you could suggest I am willing to do as you suggest\nBecause with this new rating I wont be able to sell anything\nI just listed a power amp\nDidn't know my rating changed after all these years\nIf you could do anything to help me it will greatly be appreciated\nchoose000\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n4 posts\n10-18-2022 at 03:18pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nTammy\nHad a problem with a buyer.\nNeed to know what I could do to improve my score\nbarrarich\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3 posts\n12-05-2022 at 05:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI did not have any more to sell for quite a while and I cancelled my \u201cBluebook\u201d $10/month fees.\nBut now I am obligated to sell about $250,000 (retail price) of equipment for a prior customer whose husband has died and she is going to move into a new home (perhaps back in Thailand).\nHow do I reposition myself back as in prior years? \u00a0When I call now, nobody answers.\nPLEASE let me know how to be able to utilize Audiogon once again!\nRich Barra at 801-910-5860\nAdmin\nAudiogon Official\nbarrarich\nSend me an email to\n[email\u00a0protected]\nand I'll help you.\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n9,311 posts\n01-05-2023 at 07:27pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI AM LOCKED OUT FOR 2 DAYS!!!!!!!!!!!!!!!!!!HEKLLO DUDES!!!!!!!!!!!\nunclewilbur\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n203 posts\n10-17-2024 at 06:24am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nHelp.\nI created an account on my phone.\nNow I am trying to use my account with my iPad, but it won't let me. I've tried for hours, done everything, but I can't get into my account with my iPad.\nPlease help.\nMore to discover\nA fun idea for Audiogon\nWhat ever happened to the Audiogon App?\nPurchase on Audiogon arrived not as d...\nAudiogon \"Best Recommendation\" thread...\nCNET story on my tube based system Au...\nFocal 36 MONTH FINANCING\nVandersteen Model 2c ii signature\nAyon Audio S-10IIxs\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete th","title":"How to contact Audiogon Support","url":"https://forum.audiogon.com/discussions/how-to-contact-audiogon-support"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n191169-180156\nEdit\nMagnepan .7\nI know this is a weird question but does anyone know the size of the female spade adaptor that hooks up the tweeter and mids. Thanks in advance.\narya\n08-31-2024  4:05pm\n2 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nruss69\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n3,579 posts\n09-04-2024 at 03:42am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nJust order a variety pack from Amazon.\nunclewilbur\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n203 posts\n10-02-2024 at 05:40am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI would call Magnepan.\nMore to discover\nLooks like a new Magnepan speaker is ...\nMagnepan evaluation\nBiwiring benefits with Magnepan speak...\nMagnepan ribbons problems\nSubs for Magnepan 2.7's\nVolumio Primo Plus\nRSX MUSIC SERVER RSX MUSIC SERVER\nRSX MUSIC SERVER RSX MUSIC SERVER\nYou must have a verified phone number and physical address in order to post in the\nAudiogon Forums.\nPlease return to\nAudiogon.com\nand complete this step. If you have any questions please contact\nSupport.\nRefreshing this page won't delete your work.\nContact Us\nHelp\nGuidelines","title":"Magnepan .7","url":"https://forum.audiogon.com/discussions/magnepan-7"},{"category":"tech-talk","content":"Audiogon\nThe world's largest high-end audio community.\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nAudiogon\nThe world's largest high-end audio community\nVirtual Systems\nLet the world see what you've built.\nBluebook\nThe right price. Every time.\nMerch\nRep the community and hobby you love so much.\nBrowse\nInsider Lobby\nTopics\nAmps Preamps\nHome Theater\nSpeakers\nDigital\nAnalog\nCables\nMusic\nBest Of\nTech Talk\nPC Audio\nAudio Clubs\nMisc Audio\nMember Reviews\nHeadphones\nSmart Home\nPro Audio\nVintage\nInsider\nFollowing\nRecent Activity\nFollowing\nInsider Lobby\nClose\nHome\ntech-talk\n139051-166\nEdit\nConverting stereo single ended to balanced mono?\nHi, I have three Thiel 3.5 stereo equalizers (bass boosters). These are single ended only. I was wondering about the benefits of trying to convert two of them to balanced mono operation. Is it possible? Is it worth it? What are the options\u00a0for doing this? What are the pros and cons of these options? Are there any other upgrades that might be considered if and when these conversions might be done?\nhttps://www.stereophile.com/content/thiel-cs35-loudspeaker-measurements\nAs always thanks in advance.\nunsound\n10-19-2018  7:44pm\n18 responses\nAdd your response\nExpand all responses\nCollapse all responses\nSort\nNewest first\nOldest first\nsleepwalker65\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n833 posts\n10-19-2018 at 09:13pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nIf you want hifi, ditch the equalizers. They will only mess up the phasing and add distortion and noise. Less is more.\nunsound\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n7,425 posts\n10-19-2018 at 09:37pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nThese are not typical eq\u2019s.\nPost removed\nOct 21, 2018\nimhififan\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,260 posts\n10-22-2018 at 05:00am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI was wondering about the benefits of trying to convert two of them to balanced mono operation.\nIMO, it will benefit\nif the rest of your system is true balanced.\nmake one stereo single ended box do the two positive parts (both R &\nL positive. (and then you are actually doing NOTHING to the internals\nof the box!) .. and the second box do the two negative parts. Again,\nonce you have the negative signal, you are just entering it into a not\nmodified box.\nhttps://www.audiocircle.com/index.php?topic=118232.0\nimhififan\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,260 posts\n10-22-2018 at 06:38am\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@unsound, have you ever considering bi-amp the cs3.5?\nThiel use parallel crossover design can easily modified to bi-ampable, so the bass equalizer will has no effect on higher frequencies.\nhttp://techtalk.parts-express.com/filedata/fetch?id=1136123\nhttp://techtalk.parts-express.com/filedata/fetch?id=1136124\nhttp://techtalk.parts-express.com/filedata/fetch?id=1136125\nPost removed\nOct 22, 2018\nunsound\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n7,425 posts\n10-22-2018 at 02:01pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nhttps://www.bing.com/images/search?view=detailV2&ccid=%2fogtNyc3&id=FDE1790CC2A1783F75A1A5D4...\nEnter your text \u2026\nhttps://www.bing.com/images/search?view=detailV2&ccid=bCDSz%2b1%2b&id=E2F03E665F3C1ED7429047...\nThanks for all your responses. I seem to be just as confused as when I first started.\nI have considered bi-amping the 3.5's. The 3.5's only come with one set of binding posts per speaker. The earlier 3.0's came with two sets of binding posts per speaker. Perhaps \"Coherent Source Service\"\nhttps://www.coherentsourceservice.com/\nthe company made up of ex-Thiel techs could modify the 3.5's with earlier dual setup 3.0 binding posts. They are currently working on cap replacement/upgrades for the Jim Thiel designs, Unfortunately I'm led to believe that the 3.5 cap replacements are not currently on the front burner of development. I do have a bit of concern about the time delay between the signal that would go through the eq vs. the signal that doesn't. I realized that the time might be insignificant, but time integrity is one of the hallmarks of Thiel designs (and a handful of others). Heck, the cross-overs on the CS 5's were designed to move drivers back as little as 3/8\".\nhttps://www.stereophile.com/floorloudspeakers/690thiel/index.html\nFurthermore, though bi-amping would help keep the eq out of the upper registers, the degree to which might be less than one might first assume due to the shallow 1st order cross-over. Still, despite the extra expense the thought has much merit.\nThanks again for the responses. I still don't feel like I understand this well enough. In any event I don't have the technical skills to pull this of myself and think I would have to hire some one to complete the task, should I go forward.\nI welcome any other thoughts or considerations.\nAs always, thanks in advance.\natmasphere\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n12,453 posts\n10-25-2018 at 09:06pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nYou could do this with some modification, but there really isn't a good way to do it otherwise. The problem is that you have to invert the signal to one channel in order for a balanced output to be produced from the pair of channels.\nOne way do solve that, assuming a single-ended input, is to wire the input circuits of the two channels as a single differential amplifier- with each output then driving their respective channels. This assumes a discrete solid state circuit. And you might need a negative power supply to make it happen.\nAnother way would be to use an line transformer driving the two inputs. This is by far the easiest way to do this but the transformers that are worth it aren't cheap. Jensen makes the best- its either that or Lundahl. If the secondary driving the input of the EQ has a center tap that would be helpful, but a pair of resistors would do as well.\u00a0 PM me if you need more info.\nunsound\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n7,425 posts\n10-25-2018 at 09:17pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nAtmasphere, Thanks for your considered thoughts. I was hoping you might respond:-). I\u2019ve always been curious about using balanced configuration, and your previous posts on the subject have been quite compelling. Honestly, this subject seems more and more like it\u2019s way beyond my technical understandings. Still, I\u2019m curious and it might open up options up and down stream in my system if I could resolve the bottle neck.\nimhififan\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n2,260 posts\n10-26-2018 at 04:08am\nCopy Comment URL\nReport Comment\nEdit\nDelete\nSchematic on diyaudio if interested:\nhttps://www.diyaudio.com/forums/analog-line-level/294911-popping-noises-thiel-cs3-5-bass-eq.html\nunsound\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n7,425 posts\n10-26-2018 at 02:37pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n^Thank you!\nJust last week I was lamenting that there was so little response.\nThe schematic is beyond my comprehension, but I suspect might be invaluable.\nIn the past week the Audiogon community has really impressed me with their selfless research, posting and invitations for private discourse.\nThank you all so very much! It truly is appreciated!\nunsound\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n7,425 posts\n10-26-2018 at 05:55pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\n@atmasphere\n, PM sent\nThanks!\nunsound\nDetails\nDiscussions\nPosts\nThis discussion\nMessage User\n7,425 posts\n08-06-2019 at 05:56pm\nCopy Comment URL\nReport Comment\nEdit\nDelete\nI\u2019ve just acquired a pair of mono XLR input and output JP Labs Golden Flutes Bass Alignment Filters.....for KEF 104\u2019s. JP Labs though prompt and courteous couldn\u2019t offer me any help with modifying these things for the Thiel 3.5\u2019s. They also suggested that the case work might need to be sacrificed towards that endeavor, s","title":"Converting stereo single ended to balanced mono?","url":"https://forum.audiogon.com/discussions/converting-stereo-single-ended-to-balanced-mono"}],"source":"/opt/harvester/data/_scraped_data.jsonl","status":"ready"}