Re: Diesel Diefet - the quest: Weird tone stack response

Posted by motterpaul on Apr 26, 2015; 7:57pm
URL: http://guitar-fx-layouts.238.s1.nabble.com/Diesel-Diefet-the-quest-Weird-tone-stack-response-tp19847p19905.html

Okay - I think I finally have this sucker sorted out. I finally got rid of the gating sound on decay by carefully adjusting trimpot 3 (the 470k on the left) - once that was in the right place the rest were easy.

This is a hard one because many of the trimpots have ranges where you hear nothing, and you can get it working - but it may not sound great. This time, when I started with trim #3 FIRST.  It sounded cleanest (no gating) and I was able to bring up the rest to compliment where it was set.

I have never had such a hard time tuning in a FET circuit but I never had so many variables. This is a real good case where writing down the recommended voltages on each trim put would be highly recommended. Fixed resistors might even be a good idea.

Still, I have a problem with the treble in that it merely rolls off all the lows and mids, leaving nothing bu a sad, lower-volume hissy sound when it is full on. It actually sounds best full off - by far.