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In Reply to: RE: What is the "sound" of microphonic tubes? posted by Ray Moth on October 26, 2014 at 16:36:02
I recall DLM saying that DF finds only 1 in 15 samples of 7B4 acceptable for his SE DC 2A3 mono amps in term of microphonics.
Apparently this is needed for correct "jump factor" in a low current driver stage.
A microphonic tube would normally be dismissed by the average builder of typical mid-fi tube amps.
Follow Ups:
"A microphonic tube would normally be dismissed by the average builder of typical mid-fi tube amps."
If it takes a microphonic tube to make a design perform, there's something terribly wrong with the design.
Tre'
Have Fun and Enjoy the Music
"Still Working the Problem"
"If it takes a microphonic tube to make a design perform, there's something terribly wrong with the design."
I would agree with you, but the thought process involved in designing "alternative" low power SE tube amps is not conventional or grounded in known theory and measurement sciences.
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