Reducing treble / brightness in a THUNDERCHIEF

[saultime]

Hi all. I built a Thunderchief a few years back (http://www.runoffgroove.com/thunderchief.html) and while I like the character of the distortion, I've always found it to be far too bright and shrill on its own. I end up rolling the tone control on my guitar at least half way to get a usable tone, and I really don't like working that way.

I'd really like to find a (relatively) simple way of darkening this thing up a bit, and maybe even adding some bottom end. What I'm not really interested in doing is adding a full-on tone control, although I'm not ruling it out. But are there any quick and dirty changes I can make so that it sounds a less harsh on top and a little fuller in the bottom?

[petemoore]

 See simple mods and tricks, put a cap to ground in the signal path, try various positions and values..
 The two pole filter at the end of the circuit [2U2's and 15ks] could also be modified to provide a rolloff at the end with a steeper frequency 'cutoff' curve [curve, there is no frequency ''cut-off'' I know of that say allows 12kz and disallows 13kz].
 Perhaps start by making one of the 2u2's a 3u3.
  If you happen to have 2u2 handy and it can somehow be paralleled to the 2u2 to make 4u4..you wouldn't necessarily have to pull the capacitor to change the value of it's position, you can add to it.

[dschwartz]

the caps should be 2n2 or 3n3, not 2u2 or 3u3....