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RE: "Everything on the bias circuit is audible"

Posted by aknaydenov (A) on April 9, 2016 at 05:31:57

In Reply to: RE: "Everything on the bias circuit is audible" posted by cpotl on April 8, 2016 at 17:22:01:

"It is easy enough to arrange such a supply to be essentially of any arbitrarily desired degree of constancy. If you are saying that you have found that by playing with the various components in such an "ideal" supply you can obtain sounds that you find more pleasing to the ear, then that is certainly logically possible. It might be, for example, that a bit of mains ripple superimposed on the bias supply might be more appealing to some listeners. Or a frequency-dependent colouration caused by insufficient smoothing capacitance for achieving constant voltage across the spectrum."

And even more possibilities are present. Some of them are timbre characteristics of each element. Different resistors for example have different sonics, even if their value is the same.
Even if your schematic has the same level of output voltage, same level of ripple and the same values of smoothing capacitance, each element has its own signature.
I will be more than happy to own equipment that can measure "hidden" parameters of elements such as a resistor, a wire, a plug, a switch. If I do, I will be a rich man.

"But any such deviations from a truly fixed voltage bias supply would easily be measurable by using suitable test equipment. Whether "most electronic measurements" would be able to pick up the effects would be dependent on how you define or quantify "most." I could easily believe that many measurements performed around the world might be of insufficient accuracy to pick up the effects at the necessary level of precision. But that is quite different from the implication that is tacitly, I think, suggested by your statement, namely that no possible measurements could be made that would be able to correlate the sounds with the measurements."

I agree and I can think of some, for example: DC voltage value, AC ripple, harmonic spectrum on the output, output impedance, power supply filtering resonances and Qs, rectifier switching harmonics, mains noise.

Although great attention should be paid to those mentioned and I admit I do, I still defend my argument that each element has its own signature.

Good theory and engineering are needed, but practice has the final words and it is the ears that do so.

This post is made possible by the generous support of people like you and our sponsors:

Kimber Kable

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