Pioneer TS-W304R Champion Series 12" 4-ohm subwoofer at Crutchfield
Pioneer TSW312D4 Champion Series 12" 1500 Watt – Green Bee Solutions
Pioneer TS-300D4 12" 30cm Champion Series Dual Voice Coil Car Subwoofer 1400W | eBay
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
TS-W3002D2|D4 - 12" Champion Series PRO Subwoofer with 3500 Watts Max. (1000 Watts Nom.) | Pioneer Electronics USA
Pioneer TS-W3003D4 12" Champion Series Pro Subwoofer With 2000 Watts Max Power - Dual 4 ohm
Pioneer TS-W309S4 Champion Series 12" 4-ohm subwoofer at Crutchfield
Pioneer Champion 12" Subwoofer
Pioneer Champion Series TS-A301D4 1600 Watts 12" Daul 4 Ohm Car Subwoofer NEW 884938496049 | eBay
Pioneer TS-A301S4 | 500W RMS 12" Champion Series Subwoofer