http://www.etronics.com/product.asp?stk_code=cervega12d4&store=&catid=369 I bought a pair of them a few years back, and have yet to build an enclosure for them. Seeing how the car audio world is evolving, I'm not so sure I should even bother putting these into car enclosures. They've got excellent frequency range, so I think maybe I should put them in some home enclosures, and get a single, cheap, omgwtfthatsbeef sub for the car. I've been looking at the Power Acoustik FUBR 12, and some of the Audiobahn subs. I want something better than the 3 old, cheap 10s I have in the trunk right now, without taking up as much space. I absolutely will not spend more than $300 on sub(s) right now. I'm trying to stay at $200 or less. Suggestions?