Well im not an audio guru, but if you want more thump for a cheap price it's extreme easy. All you have to do is go buy an ebay 10" or 12" sub and box combo and our amps are actually power enough to power these. Mine is THUMPING now, and I wouldnt want any more. Trust me do this and you will be amazed! Here is a link of some subs that would work awesome with the amp we have. It will be the best $50 u ever spent!
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3023340983&category=32823
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3023340983&category=32823
