QSC KS212C K Cardioid dual 12" powered subwoofer — 3600 watts peak at Crutchfield
QSC KS212 3600 Watt Dual 12" Powered Subwoofer Active Sub w/ Cover PROAUDIOSTAR – ASA College: Florida
Powered Cardioid Subwoofer
QSC Triple LA112 2,400W 12-inch Active Line Array Speaker and Dual KS212C Cardioid 3600W Dual 12 inch Powered Subwoofer Ground Stack System | Sweetwater