Ok, I have a fosgate 400.4 that have have been using for the longest time. It was working fine. I was pushing four components and two subs with it. Yesterday I picked up a 500.2 to run the subs. I install it, it goes in great. If fucking hits hard...but now I have a popping sound (rather loud too) coming from the components. I have changed the ground, pos, RCA's raw speaker wires. Nothing stops it. What can I do to fix this?!?!!