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
TS-W310D4 - 12" Champion Series Subwoofer with Dual 4 Ω Voice Coils | Pioneer Electronics USA
Pioneer Champion TS-A301D4 | 12 Inch 1600W Dual 4 Ohm Subwoofer | 12" DVC Sub | eBay
Amazon.com: PIONEER CAR TSA301D4 12-inch 1600 W Max Power, Dual 4 Ohm Voice Coil for for Powerful Bass Champion Series - Component Subwoofer : Electronics
2 12” Pioneer Champion Series Pro Subwoofers with Box - electronics - by owner - sale - craigslist