Summary: If you know anything about car audio and are looking for a subwoofer that's gonna produce car rattling bass then you know kicker is the way to go. The CVX series is one of the top subs from kicker and if want to be the loudest on the block without worrying about ur sub giving out then purchase the CVX it's worth the money.
Summary: I own a pair of these in ported box. I have them wired down to 1 ohm and Im pushing them with a Hifonics brutus 1200.1 amp. I am actually very impressed with how loud these can get when they are pushed. They will get low a loud. I was also impressed by the sound quality at normal listening volume. I was a little disappointed in the sound quality at higher levels. If your not concerned with SQL then these are a decent mid grade sub.
Summary: I've had the rockfords p2/p3s, i've had Audiobahn, Kenwoods, Sonys, Rockfords,Bose, JL- almost every mainstream companies thats on the market. You cannot beat this subwoofer price against quality/strength I have 2010 12'' totaling 1500 rms, and i'm using a 2010 zx2500.1 2814 rms against 1500, and it performs flawless! the 2010s are actualy better than the older one, i can prove it because i've gotten them both metered and, the 06's burnt sometimes but the 2010s NOTHING!