just recently after i changed my stock battery i noticed my amp cuts off at certain volume levels... when i turn the volume down the amp doesnt play anything, it starts to cut in and out... but when i turn it 3/4 it starts to play... i went back and checked the amp,wiring, everything was fine... i tapped the amp while the volume was on low and after i tapped the amp it started playing... why is it doing this?... and also the bass isnt smooth... it sounds like bass is trying to hit but it gets muffled, and at high volumes the bass sounds ok in a few songs.. box?... i dont think its clipping cuz the gain isnt even 1/4 the way up...help!!!