A friend of mine had one of the Kenwood KSC-SW1 self enclosed subwoofers sitting on the shelf in his garage, so we thought we'd throw it in my '05 SCab to help the 6X8's with a little bass. I have to admit I didn't expect much, but this little sucker puts quite a bit of bass into the mix. Not a hard hit like even a single ten, but a nice bass tone to fill out the sound quality. Fits easily under the seat, has a wired remote control (that I am not using because my Alpine deck has seperate sub output/controls), and for the price, might just be the ticket for someone who wants to improve sound but not use as much space as the QLogic or a custom box might use.

YMMV-I am just running deck power to the Boston (front door) and Infinity (rear door) speakers, and the ampifier for the kenwood unit just keeps up. Once I build a box and install more amplifier power, this will be coming back out of my truck. In the meantime, he gave a couple hundred for it and ran it in a leased car for a couple years, and it does a nice job of improving sound quality.