[Guitar feedback issue at high frequencies - please help]

  

On 11/15/2023 at 7:50 AM, HarryA said:

I prototyped  a couple of passive notch filter circuits including the one Tony posted. But neither were very good; two broad.

If I can find an inductor between 150 to 200 mh I will try a parallel resonant band stop filter.

This site maybe helpful:  8 Ways Of Resolving The Electric Guitar Feedback Problem
 






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