My subs randomly quit working and I noticed my status light was off. I switched it to lpf and it worked again but the light was still off and my subs didn't hit as hard. I checked all my wires and fuses but everything is fine. What's wrong with my amp? A couple days before this my lpf juss hit a steady bass that didn't go with the bass on the song, but now that my hpf quitworking it does follow the song. But my hpf doesn't work anymor and my status light is still off. What's wrong? Any suggestions on how to fix it?