MISFIT - RC filter mod question

[blearyeyes]

I've read that the circuit the Misfit is based on (Ibanez MT-10) might need a mod to get rid of the some flub or low end going into the distortion section. I love circuits with pre distortion bass roll off controls. Would rather have a pot if that is possible.

Is the highlighted cap the one I need to lower, to raise the cut off frequency?
I read from 220nF to 100nF might be more to my liking.

Any help is appreciated.

Thanks!

[Aleph Null]

That's the cap! Smaller cap will yield less bass in the situation. I would recommend socketing it and experimenting with values.

[blearyeyes]

Now the question is how do you calculate the Q and roll off of the filter?
Using my handy dandy RCL calculator If I drop in a 100nF the cutoff goes to 600Hz.
Socket the darn thing….

[blearyeyes]

That's the cap! Smaller cap will yield less bass in the situation. I would recommend socketing it and experimenting with values.

Thanks. Sounds like a plan.

[mauman]

It's the same configuration (resistor + cap to ground) as a Tubescreamer, although the values and stock corner frequency are different.  You could use any TS Fat Mod scheme, and substitute the R & C values, if you want a two or three way switchable bass cut.  Instead of adding bass like the Fat mod, you'd be reducing it, but still by switching or paralleling caps.

[blearyeyes]

I'll find some schematics with a fat mod switch.