Is my subwoofer toast?

Disconnect the RCAs and sweep the gain to see if it still does it. If yes, then the amp has issues. If no, connect your phone to it via 3.5mm to RCA adapter and test it.

Again - you're a godsend.

Nothing happens when I sweep the gain with no input, so seems the actual sub is ok.

Furthermore when I plug the phone straight in, it sounds great. So the issue must be my shitty high level input wiring.

I'll see if I can fix that.

Thanks!!!
 
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