I HAVE 2 10S WITH A 800 WATT AMP ALRIGHT IT WAS WORKING GOOD MIRRORS SHAKING STEERING WHEEL VIBRATING AND MY FRIEND GAVE ME HIS 1200 WATT AMP AND I TRIED IT TO SEE IF IT WORK AND I PUT MY OTHER AMP BACK IN IT BECAUSE IT THE 1200 DIDNT WORK AND NOWWW THEY NOT HITTIN RITE LIKE THEY WERE...