Post PI master in Sunn Sceptre?

[Boy Howdy]

One of my Sunns isn't absolutely virginal and isn't in fantastic condition (neither are my fault), so I've decided a little monkeying under the hood is okay. I want to install a PPI master. If I like it, I would install the new pot in the reverb control hole. The reverb tank doesn't work properly on this amp, and I don't much care for spring reverb anyway, so....

I'm a bit of a novice, so I wanted to get the okay from you guys. Since the Sunn's PI is different from the usual, I want to make sure the circuit will work okay.

Here's the Mission amps master:

http://www.blueguitar.org/new/schem/...d/pi-m-vol.pdf

And here's the Sunn schematic:

http://sunn.ampage.org/site/schematics/sceptre.gif

[loudthud]

You should probably use a dual 100K pot. The resistors described as 33K to 100K can be zero to 10K.

[Boy Howdy]

Ah, good. I have a 100k dual on hand. Thanks, thud.