What Values For Tone Circuit?

[RANDY]

I play a home built black face fender champ.I want to change the values of the caps in the tone circuit.My goal is to dip different mid freq.How do I calculate this to know what freq. I'm dipping?If I want to dip 800hz,what values do i use?THANKS!

[Tom Phillips]

Randy,
Duncan's tone stack calculator is a nice software tool you may find useful.
It's free and available at http://www.duncanamps.com/tsc/index.html
Regards,
Tom

[Enzo]

The calculator is a very cool thing, and when you play with it watch the peaks move. The controls are passive and interactive, so it is very hard to pin a particular freq on any one knob.