http://www.pioneerelectronics.com/PUSA/Car/Subwoofers/Champion+Series+PRO/TS-W2501D2%7CD4 Says they are 800 watts rms. Guy in my school is selling practically brand new ones (played for like, a week in his car) for 150 bucks because his car just broke down and he needs money. Would anyone suggest these? They beat my old 350 watt pioneer 10s lol