I HAVE THE SONY EXPLODE CDX-GT35UW HEAD UNIT WITH A ALPINE35223 BRIDGEABLE AMP FOR THE2 ALPINE 3 WAY 150W 6X9'S. THEN A JENSEN 300W 2 CHANEL BRIDGED TO RUN 2 1200 W SONY EXPLODE 12" WOOFERS. IM GETTING A FAILURE MSG FROM THE HEAD UNIT & BASS CUTS OUT WHEN I TURN THE VOLUME UP. WHY?