I have a "Boss rev435" 300w x 2 car amp that I used for a little while until it stopped working. I have tried using it with full pass, low pass, tested numerous speakers, and three different subs in ...

I've got a receiver from the 70s that's been working fine until the last few weeks - it's cracking in the right front speaker, with no signal present (and it doesn't seem to be affected by volume). It ...