12-13-2007, 07:45 AM
$600 is not going to buy you a whole lot. I would look into an older rockford fosgate amp. Do a search on ebay for a 250a2, or 500a2 amp. You can also find kicker L7 subs for about $200 a pair to $300 a pair. From what I have found the amp is one of the most crucial parts, you can have the best subs in the world but they sound like shit cause the amp is of poor quality.