This is weird and has happend to me twice. Ok i have a kenwood headunit(45x4) and 150 watt speakers in the back, 400 upfront, and a sub. ok after a while of loud play( seems to be rock) my speakers randomly start to faid out and sound crappy my sub still plays, but if i turn it down and wait a few seconds they play like normal( o yea there not crappy speakers either there rockford fosgate and earthquake). SOO whats happening here are they gettin how or what im confused?! :?