i know this has nothing to do with this site but i figured some one on here would know ok i bought 2 infinity perfect 12.1's and a 1200 hundred watt amp but when i put it on even with the valume all the way down it makes loud thumps and they are constent with about a second in between the thumps and it really makes the music sound crappy so i was wondering why this happens? and if anyone could tell me how to fix it that would really be appreciated.