Polk PSW505 Very Quiet
I have a Polk PSW505 that's around 6.5 years old. It seems to have failed. Sound levels are very, very low, even with the volume turned up to max. I'm using speaker outputs. Amp works and powers my bookshelf speakers just fine. I connected a phone to the line level inputs, and same thing: really low audio.
I opened it up and I don't see any obvious problems. I have one with the BASH amp.
Are there common issues with the BASH amp in these units that are fixable? A new amp is about what I paid for the sub, so that's out.