Hey guys, so I just purchased a 2001 330ci and have been driving it for a couple weeks now and the most annoying thing happens. When I'm driving and hit a bump the two sub in the truck portion of the system "taps out" I guess and it's just a bunch on crappy staticy bass but if you hit the rear deck on the inside of the car it stops. I opened up the housing and the speakers look to be in good shape; no tears, cracks, or cut wires. What do you guys think it could possible be? Any tips on how to test it and what not. Any help is greatly appreciated!