Blues Jr Hoffman Circuit Adding Reverb

[ALK2MT]

I have a question about connecting the solid state reverb circuit back into the Blues Jr Hoffman circuit. I am wanting some expertise on modding the circuit. Could I just attach the reverb circuit back in on either side of R18 like the original circuit? How do I delete meat control as well.

Thank you!

Alex

[stratomaster]

You would also need to create a low voltage power supply for the IC to power to Reverb circuit.

The meat control can be deleted by simply not populating it and replacing it with a wire. Refer to the official Fender schematic.

[ALK2MT]

I’ll redraw this out, but in concept.

If I added the original 15/15 bias circuit back in, I would also need to accommodate for tube bias part of circuit and could replace R51 with a bias pot and come out ok?

I’m also drafting up the reverb circuit.

[stratomaster]

Yes. You'd have to either adopt the whole circuit, adapt it while keeping the same topology, or use the 50vac tap for just the low voltage supply and derive your bias from the HT.

It's easiest to just crib Fender's proven design