ABT CAR AUDIO AND ITZ IMPROVEMENT?

Question

THANKS A LOOT GUYZ FOR U R COMMENTS AND INFORMATION.! I HAVE PUT DE SYSTEM 4 DE CAR...I PUT A KENWOOD HEAD...1200 W TUBE SUBWOOFER , 2 BLAUPUNKT SPEAKERS 260W IN FRONT, KENWOOD 500W AT BAK AND AN AMP OF 800W 4 CHANNEL AMP WIT 150 RMS OUTPUT EACH CONNECTED TO REAR SPEAKERS AND THE SUBTHE PROBLEM NOW IS MY CAR VIBRATES A LOOT FRM OUTSIDE COZ ITZ A 2004 SALOON CIVIC IS IT DE BOOT OR THE GLASS AT DE BACK>???IF U COULD SUGGEST ME WAT 2 DO.IT WILL BE VERY HELPFULL! BUT MY SOUND IS CLEAR n good !

Answer 1

best replacement for 2004 Chevrolet Avalanche Bose head unit