Help Please

So i have a problem because i have purchased a 12 in DXi112 and connected it to a 500 watt kicker amp and every time I try to bump my new system I blow the speaker.and to make it worse I am on my third sub today. this one also happens to be the last one from the store, but any ways can anybody give me any suggestions

You might want to join in this thread . . . http://www.polkaudio.com/forums/showthread.php?t=117407 . . . as it seems to be similar in nature and the original poster there may be able to help you.