More mids in vox pathfinder 15 tonestack

[plucky]

Hi,

I wanted to add a mid range boost switch in a vox pathfinder 15 tonestack, I was looking at the schematic and maybe I could just increase the R18 to 10k. I wonder if that will work.

Thanks.

[Tubebass]

That should work fine, and you can go larger than 10k for more mids. However, the bigger that resistor gets, the  less effect  the bass and treble controls will have.

[plucky]

That means that I'll get a gain reduction..... Another way of improve the mids without sacrifice gain?

[Tubebass]

No, you'll get a gain boost all right. For example, the mark I Meas Boogie amps had a boost switch that simply opened the ground connection at the bottom of R18 in your schem. It gave a big volume boost, but the tone controls became totally ineffective!

[plucky]

Yeah... thats a good advice...
Thank you very much!!!!

[sfx1999]

http://www.duncanamps.com/tsc/

Tone stack calculator, has Marshall, Vox, Fender, Big Muff, and some others.