I have a Q-Logic 10" Bass Tube with a Kenwood 10" Sub(600 Watt) in the trunk. It is hooked up to a 300watt Jenson amp and it thumps nice. It sounds real nice with the top up, but when its down it looses a lot of the bass, but it still does a excellent job of balancing. I got the tube with the speaker for $180 with all wiring. It takes up less than half the trunk.
There is a plastic piece that sits over the top motor and hides where the top folds down into. When I took this out it eliminated ALL rattles coming from the trunk, and I have a cobra spoiler that I recently put on.
Scott
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1992 GT 5.0L Convertible
BBK Shorties, Flowmasters, Super Chip, Mass Air, Under Drive Pullies, Hurst Shifter, Duck Tape
AIM: SmokeyDP