Mic preamp - strange high frequency roll off problem - Page 4 - diyAudio
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Old 6th January 2013, 08:59 PM   #31
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Join Date: Mar 2010
It's great that people on this forum could be that helpful (and trusting), but I think I can manage with what I've got (for this project anyway!).

Well, I've re-organised the grounding and the only change is a shedload more noise.

Going to keep going though, there's a chance I may not have sanded off enough powder coat to make good contact with the chassis.

Could it maybe be the quality of my filter caps?
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Old 6th January 2013, 09:08 PM   #32
DF96 is offline DF96  England
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Join Date: May 2007
No, component quality does not make that sort of change.

As I said, either the circuit is not what you think you have built or you are not measuring what you think you are measuring. Circuits are causal; impossible things don't happen so there is a rational explanation. Remote debugging is not easy!
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