Chuck chuck with modded tonestack

[RonaldB]

After making the dr boogie (great PCB by the way)
I wasn't happy with the sounds. When I plugged it straight in my tube amp it sounded very trebley.
Not what i wanted, so I tried it in my effects return. That gave better results.
But for me not usable because I want all my effects before my tube amp.
So I got messing with the tone stack. What I did was adding this BMP tone control with pressence pot after Q4.
I removed Q5. It's version 2.
http://www.muzique.com/lab/tone3.htm
And added 2 LPF after this tone controle (10K/2n2) and the to the Level potentiometer.
This gave me the sound I wanted, Very nice and plesant lead tones and of course rythem tones.

The switches on the outside are not yet wirred.



RonaldB

[bigrigg]

looks nice and polished. Congrats on doing the mods to find your tone.

[gtr2]

Love the look..but where are the guts 

Josh

[jimmybjj]

+1 for guts

[nzCdog]

Cool build RonaldB... I'm tweaking a Chunk Chunk myself right now and keep coming back to original spec each time... love to see some guts when you wire up those switches, and maybe even hear a demo of your modified tonestack 

[RonaldB]

Thanks for all the compliments
And since you asked for it here is the gutshot:

The little pref board holds all the components for the BMP tone control.

I will do a video to, that will follow later.
I build it with 2N5474 jfet by the way.
The switches are still not wirred but the first one will change C3 between 1uf and 2.2uf (or 4.7uf)
the other one will change C11 from 1n to 10n.
I'm curious how that will turn out.

I noticed that I got the out fx and out jack wirred up wrong.
Have to change that. But because I use all my pedals in a true bypass looper I didn't noticed it