Ok this might be hard to explaini... but i was driving yesterday and i was listening to a CD but all of a sudden it sounded all static. i tryied switching CD's and to the Radio and it was still making this noice. When i fade the speakers all the way to the front it's sounds clear again. But when the fade is in the middle that noise does come out of the front .. proving that the back speakers aren't blown. Does this sound like something is blown in the amp??? any suggestions?