Amazon.com: Pioneer TS-A300D4 12 Inch 1500 Watts Max Power Dual 4-Ohm Voice Coil A Series Car Audio Stereo Subwoofer Loudspeakers / Free Alphasonik Earbuds : Electronics
Amazon.com: Pioneer TSW312D4 Champion Series 12" 1500 Watt Dual 4 Ohm Voice Coil DVC Car Subwoofer : Electronics
Pioneer TS-SWX2502 Sealed enclosure with 10" TS-SW2502S4 subwoofer at Crutchfield
PIONEER TS-W261S4 CHAMPION SERIES 10" 4-OHM SUBWOOFER 1,200 WATTS MAX, 350 W RMS | eBay
TS-W261D4 - 10" Champion Series Subwoofer with Dual 4 Ohm Voice Coil | Pioneer Electronics USA
Pioneer 1200 watt slim design subwoofer sub. (TS-SW124D) for Sale in Brandon, FL - OfferUp
Pyle 12 in. 1200-Watt DVC Blue Power Stereo Car Audio Subwoofer PL1290BL - The Home Depot