when done right, they sound amazing and can take some power!! I don;t care what anyone says, install is everything, if you take a 87 dollar woofer, put it in a 3.3 cube box with a Modded D2 on a pair and make them out up good numbers from a trunk car and still sound good daily with the same power!! they are amazing subs!! The bahn 1200Q is our number one selling sub, and the only time ppl blow them, is from there installs, we haven't gotten one back from our installs. Like I said the 1200Q is 700 watts, and we put a Modded D2 on a pair for daily use and i mean pounding, not no light ****, I mean making your head spin loud!!!
There amps area lil pricy, but are high quality, most come with cooling fans and such, great amps expecially for street beating.
The Key to having anything sound good or get loud is the Install