Searched hard and couldn't find a post with these symptoms.
Wired in the sub today and it just started acting weird.
4gauge power into distribution block. 2x 8gauge into 4 channel and mono amp.
Pioneer GM-D7400M mono amp into Kicker 8" sub.
Wiring seemed straightforward. + to + and - to -
The woofer didn't produce any sound and started pulsing in and out very slowly. The power indicator on top of the amp also pulsed with the woofer.
While I was trying to trace the problem, the fuse protecting the amp blew.
I have the ground wires from the Mono and a 4 channel amp meeting in a distribution block and then going to a ground point.
I have disconnected the mono amp til I know what to do.
Any help sorting this issue would be greatly appreciated.