Vox-like Cut Tone Schematic ~~

[zozoe]

Good day all~~
Before I bring my modded MASCO MA25 over to my tech, I'd like to be able to show him on paper what a Vox-type Cut tone circuit looks like, a 'Cut' control that not only can cut highs, but offers a low cut, all in one pot, possibly concentric...? The Masco has only a single basic hi cut/low pass tone control, and with no need for more bass this amp, I'd like to do something flexible,  different, & with an interesting sweep. Any help, diagrams by PM or posted here on this thread, if permitted, would be greatly appreciated. Thanks in advance. 

Kenny                        kslewitt@gmail.com 

[Stevem]

I am missing something here, why are you bringing the amp to a tech?

[thetragichero]

ahh and thread title changed. originally said "contour control" and a brief googling resulted in the same post on other forums

here's one thread with a lot of good technical information:

https://ampgarage.com/forum/viewtopic.php?t=26013

here's one that shows the location and other information after you've figured out values from the thread above:

https://robrobinette.com/Voicing_an_Amp ... ut_Control

[zozoe]

Hiya STEVEM, as mentioned, I have that unused PHONO vol. control that I want to convert into an additional tone control. Also, I want to consider linking the 2 remaining mic. inputs, & have one them modded for higher gain.

[Stevem]

Depending on where that unused pot is on the chassis you could possibly turn the amp into a oscillating mess by bringing output drive signal to it, especially if your thinking about adding more overall gain!