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In Reply to: RE: Advice please: cathode and power supply capacitors posted by drlowmu on July 05, 2015 at 15:24:22
I have been following it on and off for a few years now.
Listening through clips and small leads for comparative purposes should help identify some gross differences between capacitors. If that is the reason for performing the test, then it is suitable. As you allude to, it does not tell the whole story though. One limitation is that we perceive differently when relaxed and listening to music for enjoyment - the intended end-use - versus critical listening. Another is that something might sound different when clipped in rather than fully built-in as part of the final product.
Regards,
91.
Follow Ups:
91, you certanly have an excellent grasp of the issues. Jeff is, of course, correct that using clip leads is far from ideal but for quick comparisons of different caps I don't know of a better way given how short auditory memory is. And another point about long-term listening is that it is highly influenced by our psychological and physical state on a given day. So, if we slept poorly, had gas pains from eating too many beans, got bitten by the neighbor's cat, etc., our perception of how the system sounds can certainly be influenced. The last point is that caps often have a +/- 20% value tolerance. So, if one cap we try is 20% low, and another 20% high, there's enough difference to affect what we hear with some program material. That necessitates matching values which can be a costly endeavor. There is just no easy answer to this issue. Be prepared though that once "sonic perfection" is achieved there will be a day on which you turn on the system, decide that it sounds like crap, and start the process all over again!
Yeah, I hear you loud and clear... especially regarding the gas pains ;^)
Seriously though, thanks so much for your input - it is really helpful.
Cheers,
91.
"Confusion of goals and perfection of means seems to characterise our age." Albert Einstein
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