JBL P1224 Power Series 12" subwoofer with dual 4-ohm voice coils at Crutchfield
Amazon.com: JBL Dual 12" Car Audio Ported Enclosure : Electronics
JBL SRX718S
JBL CLUB 1224 1100 Watts 12" Selectable Impedance 2 or 4 Ohm Car Audio Subwoofer 50036345309 | eBay
VRX915S | JBL Professional Loudspeakers
JBL Power Series P1222 at Onlinecarstereo.com
JBL SRX728S Subwoofer | zZounds
10" JBL 1600 watts power series high excursion subwoofer rare comp woofer for Sale in Franklin, IN - OfferUp
BOSS Audio Systems AR120DVC Armor Series 12 Inch Car Audio Subwoofer - 1600 Watts Max, Dual 4 Ohm Voice Coil, Sold Individually, For Truck, Boxes and Enclosures, Use With Amplifier - Walmart.com
JBL PRX418S Passive, Unpowered PA Subwoofer Speaker (1600 Watts, 1x18")
JBL Power P1020 - 10" / 1600 Watt MAX - DJMania
JBL PRX418S 1600-Watt 18" Passive (Un-Powered) Subwoofer Sub PROAUDIOSTAR