Like anyone else shopping for a car subwoofer, I came across this unit and was impressed by the reviews, but I still had limited expectations given that it's "merely" a single 8" driver. Over the course of my life I've probably had 12 different subwoofers (home, auto and boat) ranging in sizes between 8" and 15" of various designs (sealed, ported, bandpass, passive radiator, etc.) and of various brands (Fosgate, KEF, Bazooka, JL, Polk, Focal, Klipsh to name a few). I installed this subwoofer last week under the passenger seat of my car, and powered it with an Alpine MRX-M50, a Mono Sub amp rated at 300W RMS @4ohms.
All I can say is that I was ABSOLUTELY SHOCKED at the sound of this thing. Forget everything you previously thought about driver size; this will put 12" subs to shame. This subwoofer is tight, crisp, and hits extremely hard. It doesn't suffer from the sloppiness that you hear in larger diameter drivers, and when you give it more, it just soaks up the power. The crispness remains, no matter how much power you give it. The accuracy and transitions are razor edged, even when it's hitting hard enough to render your rear view mirror useless. Yes.. it's that good. Believe all of the 5 star reviews; they're no accident; you won't be disappointed in this sub, regardless of your expectations. .
Pros: Simply amazing sound. Crisp, tight, hard-hitting. Seems to handle as much power as you can give it with no loss of crispness.