i would suggest for the money you got go to www.ebay.com and look at subs.. i bought brand new Rockford Fosgate 12' P1 series and those puppies pounded off of a 620 watt amplifier. you can get new subs off ebay relatively cheap. I would suggest Rockford fosgate, kicker or alpine.. the pioneer 760 watt amp is around $160.00 at walmart, and despite what people say about walmart, that amplifier pushes great power....