I installed this on
Honda Integra

Review
I looked at some other makes, but from reviews I found any savings in cost seemed outweighed by problems with reliability and service, so it was back to Ground Zero. It does the job - provides a solid bass to your bum (assuming you put it under the driver's seat). I generally have it set around half volume as this gives a nice sound/feel without making you want to take ecstasy and jump around a lot. I

What I like
Kicking bass that I love turning up on every ride.

What I do not like
nil.

I installed this on
Honda Civic

Review
I just got mine recently. I replaced my previous duo sub with this single-sub in the same enclosure, and it goes lower and louder! Compared to my 2-subs, this thing gives unbelievable lows for it's size. If you like rap and rock you'll love this sub. It's very efficient, loves to play loud. However, when the volume comes down and you want to listen to say jazz or gospel, its not as awesome as when you turn it up loud. You can tighten up the sound by putting more filler the box but you can hear that they're not as happy. The extreme excursion sounds like overkill with a mellow genre of music. For rap, r&b, rock, reggae, those with digital sub lows, THIS SUB'S FOR YOU.

What I like
Tremendously awesome power and thump delivery!

What I do not like
Comes with an expensive price tag.