Peavey 5150 combor reverb pot

[Gregg]

Hi,

Any idea or just a guess what the reverb pot value might be:

http://www.blueguitar.org/new/schem/peavey/5150c.gif

[Enzo]

From the parts list, 10k linear. PV part number is 71190336. get it from the factory or any PV parts supplier. It is a voltage divider, so most any value will work. But it is one of their spider pots, so you really want to just get the real part.

[Gregg]

Thanks for the quick reply!
I'm actually building one for a friend so I'm not going to need the real part.
Just to check - all relays as shown are in Crunch mode /RY3 is on, RY1 and RY2 off/?

[Enzo]

Crunch is not a channel, it is just some gain alteration on the clean channel.

AS drawn, clean channel on - K3 on, K1,2 off. Since all three are controlled together, that opposite relation will always be.

Crunch is just a switch, no relays. it alters signal level just before the clean pre control, and also changes the boltage divider at V2A grid.

[Gregg]

My guess about Crunch mode was based on the fact that Switch 2A connects to the 470k/220p combo which means less attenuation /Crunch/ than 2M2/470p.
In my case it's not of big difference because I made 3 separate channels with their own tone controls and my clean channel is Fender type - I take the signal from V1B directly to R17.