Aside from caps, it doesn't need restoring. The problem is this: I'm not running an amp museum; I'm a guitar player looking to add more sounds to my studio and gig arsenal.VintageJon said:Mother Of Gawd Man, you've got a valuable piece of gear there! DON'T CONVERT IT, JUST RESTORE IT!!!
Ian Anderson said:I have a '67 JMP tube rectified 50watt Super PA. I had my tech go through it and bring it up to spec and he voiced the 4 channels from super lead to super bass.
Here are pictures before and after. I have no clue what he did but it sounds great.
I do know the differance between the Superlead and the Superbass is basically the absence of the bright cap(s). The SUperbass is as if it had been CUT out of it. I actually prefer the superbass sound which is warm. Just remember how to drive this amp into warm sustainy gain and your dialin and smilin :>) 12ax7 pedals or a good fuzz and your good 2 go!
No offense intended, but this isn't possible. The Lead models use different tone stack and PI coupling cap values to the other models, and these components are common to all the channels, so you can't truly put Lead and other versions in the same amp.hdiddy said:I did this to a 69 and 70 Super PA; I got the info on the Plexi Palace board
The mods are reversible and basically all you are doing is adding some caps or bypassing them on the Volume Pot
Mine is as Follows
1. Early Super Lead
2. Later Super Lead
3. Super Bass
4. JTM 100 (Clean Sound)