what does it mean when your listening to music and all of a suden your sub shuts off? is it because my amp isn't powerful enough for my sub. it only happens when im listening to the music loud for a long time. all i do after is shut it off and turn it back on and everything is ok. by the way i have a pioneer deh-6400 radio,a kenwood 350 maximum power Kac-629S, and a sony xplod 800w maximum input power XS-L1235