Quote Originally Posted by Peteybob View Post
Looking back at your earlier pictures I see you have 4 potentiometers. They appear to be paired up for 2 per speaker? Assuming they only run to the speakers. I've never seen this setup before.

I wonder if your little black switch box has a volume on/off control built into it?
I’ll check that out. The left speaker did have some volume, then one of the wires disconnected. I resoldered the 4 connections for that speaker, might have made it worse since no sound comes out of that speaker, but I’ll look at the black box, thanks for your help!