Kicker 49PTRTP12 Compact down-firing 500-watt powered enclosure with CompRT® 12" shallow-mount subwoofer and passive radiator at Crutchfield
BOSS Audio Systems P80DVC Phantom Series 8 Inch Car Audio Subwoofer - 100 Watts Max, Dual 4 Ohm Voice Coil, Sold Individually, For Truck, Boxes and Enclosures, Use With Amplifier
Mtx Audio Tn12-04 12" Svc 800 Watt Sub Car Power Car Power Subwoofer Pair : Target
JBL EON718S 1500-watt 18-inch Powered PA Subwoofer | Sweetwater