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In Reply to: RE: Like Putseys has said, if you use feedback, use a lot...nt posted by kuribo on September 26, 2015 at 06:28:14
Pass says, "Negative loop feedback creates higher order distortion harmonics, and there seems to be an implication that you might want to use lots of feedback if you plan on using any at all. Some designers look at it this way, others to use feedback sparingly, and some refuse to use it at all."
He fits indo the "use feedback sparingly" school, in support of which he shows this graph based on his own experimentation ...
I don't see how this supports "sparingly" vs. not at all, but it is worth noting that he only tried 15dB of feedback, not 40dB.
I love the music of Dmitri Shostakovich
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but indeed he never says he tried it...Putseys, on the other hand, does go there, and he, as well many others, seem quite pleased with the results.
All of this talk about the superiority of certain types of distortion over others, the superiority of certain distortion profiles over others, and then the claim that what is really "best" is no distortion (what a surprise!) all the while putting down an amp with inaudible IM distortion products and THD below the noise floor makes no logical sense. Since it is indeed all subjective, that is par for the course...
try it! you know you want to!
That is that the zero feedback crew LIKE 2nd order distortion; it is this that they like, not the lack of minute amounts of high-order.
I love the music of Dmitri Shostakovich
Again with this myth...Sigh...
nt
try it! you know you want to!
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