John Curl's Blowtorch preamplifier part III

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I'm glad that you guys got that sorted out. PMA has properly shown the problem with ceramic caps is: That COG caps never are large enough to be effective coupling caps. ONLY hi Q ceramics like the 7 series has enough maximum capacitance to be useful for a coupling cap, AND they distort BADLY! If some of you idealists would just MEASURE hi Q ceramic caps aggressively, you would find what PMA has found.
 
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Don't you think you will lose something "emotional", looking to a photographic reproduction of a Van Gogh painting ? And worse if the white balance is wrong ?

Well there obviously is a limit; if you can no longer recognize the painting yeah then there is a problem with the 'reproduction' . If your clock radio is so bad you don't recognize the tune, there is a problem with the 'reproduction'. But that limit is farther than you think.

Jan
 
I gather from the other offhand comments about feedback, etc. there might be another agenda afoot. Please not the feedback goes round and round and can't stop what has gone before.
Afoot? Too much Sherlock bingeing on Netflix, ol' chap? You are suggesting I have a hidden agenda and you are infantalizing my knowledge of control theory. No need for that; shall we stick to the higher ground of engineering analysis?

You have an equation in your data sheet that makes the effects of the output buffer completely vanish into thin air "by simple subtraction". Worthy of Blaine? My only agenda is to get to the bottom of that. Obviously the op-amp works fine; I have never used one but if JC applauds it then it must be exceedingly good. He's hard to please. ;)
 
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I don't think I would be overly concerned about that Youtube sound quality. Or the video quality, for that matter. I'd be wearing sunglasses anyway :cool:

Jan

No Supermodel but only time I have driven through Big Sur was to take my Fiancee to Laguna Beach to get married so the experience was somewhat altered compared to how it would otherwise have been. Not sure that is a drive I could ever replicate as an experience.
 
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