Filament voltage standards for tubes (valves)

May 02, 2005 41 Replies

in article cjrhe.28342$ snipped-for-privacy@twister.southeast.rr.com, Jimmie at snipped-for-privacy@carolina.rr.com wrote on 5/14/05 11:19 AM:

If distortion is wanted, there are analog and digital methods available to introduce distortion in a known way. A twin 2GHZ twin processor G5 computer using 64 bits could run circles around any audio signal that can be put into it.

It is difficult for me to understand why amplifier nuts, er.. perfectionists, do not delve into quantifying the distortions that do the best jobs for the music of interest. It should not be that difficult to make a function generator to duplicate the distortion of a tube. Moreover, that distortion could be made to vary dynamically according to the desire of the performer. In any event, how does the distortion survive the negative feedback in the amps?

Bill

Teh technical term is "audiophools".

They fail every double-blind experiment. ...worse than Randi doing Uri. Audiophools like the "warmth" of toobz. On a cold winter night I prefer a fire in the fireplace, but...

One of the suggestions on sci.electronics.design was a "double-blind" experiment where a toob amplifier was recorded and played back through a decent SS amp (perhaps even with glowing filiments showing), and challenge the audiophools to tell the difference. Repeat experiment with black vinyl and CD. The fact is the ear isn't as good as either.

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