Super Reverb component values

Hello Andy,

I believe the values on the schematics, layouts, BOMs are in agreement. Just be aware that two amps are documented, the "classic" Super Reverb (AB763) and the Super Reverb (AA763). They have respectively a 3M3 and 4M7 at R13.

Hope this clears up the confusion :) Cheers

Andrea Antonello

AA Electronics

The 3M3 resistor is not terribly critical. I've used 3M and it sounds the same. 4M7 seems way off though, stay close,as you can to the 3M3. Going too far off can suck tone, or give you too much reverb.

There's no DC voltage (unless you have a leaky cap on C10,or,C14) on the 10pF, so voltage isn't critical. Use a good quality ceramic or mica cap, I prefer ceramic NP0 dielectric, other folks perfer mica, you'd be hard pressed to hear the difference,

This resistor controls the blend of the non-reverb signal and the 10pf cap controls the amount of treble bleed. Both these values are important in that Fender R&D established the values. If you can't find a single resistor value, make a series pair... 2.2M and 1M? Just make sure you bridge both resistors with the 10 pf cap.

I am having a problem finding a 70uf 430v tad cap for the fender supper reverb can I use a 70uf 350v ???

I am having a problem finding a 70uf 430v tad cap for the fender supper reverb can I use a 70uf 350v ???

I don't think a 4.7M is a good idea. You have to remember that Fender really tweaked the values of the parts in these amps. In the case of the 3.3M resistor, you have to remember that this is the non-reverb guitar signal path to the PI. Yep, it passes through the 3.3M resistor and that 10pf cap is a treble bypass cap. If you want to ruin the sound of a Fender reverb equipped combo amp try a 50pf cap across the 3.3M. Virtually every part of the circuit has already been tweaked by the original designers, keep this in mind.

My best advice: Find a 3.3M resistor.

yes, that would be the same! for the 10pF you can use anything rated above 400-630V