Bought this to put in my van as a conventional sub isn't an option due to the rear bulkhead.
I've had standard big box subs in my cars before so I wasn't expecting much out of such a small unit with small drivers but I'm extremely impressed, it puts out an enormous amount of bass.
Installation was very straightforward and the included wiring harness made it very easy. If you want a sub that takes up very little space and puts out a lot of bass, I wouldn't hesitate to recommend this.