Is This Sub A Rip?

I just recently got a rockford fosgate P3 12' dual 4 ohm sub, and i must say, i am rather impressed by the sound quality. The best word to describe this sub is dynamic. I listen to all sorts of different music, and this sub performs admirably for any occasion. It hits hard, but only when its supposed to hit hard. I have my crossover set at 80hz, and i cant tell when my regular speakers stop and the sub starts, so to speak. Of course, i can turn this thing up, which in turn causes my vision to blur....and thats in the front seat!