Amazon.com: Pioneer TSW312D4 Champion Series 12" 1500 Watt Dual 4 Ohm Voice Coil DVC Car Subwoofer : Electronics
Pioneer Champion Series TS-A301S4 and TS-A301D4 - What's in the Box? - YouTube
Pioneer India - TS-W1211D4 | Immensely powerful at 1400W max power and flexible connectivity at 2 or 8 ohms
TS-300S4 - Car Subwoofers | Pioneer
Pioneer TS-W3002D2 Champion Series Pro 12" sub with dual 2-ohm voice coils at Crutchfield
Pioneer TS-300D4 Champion Series 12" Dual 4 Ohm Car Audio Subwoofer 1400w Max 884938373654 | eBay
Pioneer TS-W300S4 12" Champion Series Car Bass Sub Subwoofer 1400W Brand New | eBay
Pioneer GM-D8704 1200W Max 4-Channel GM Digital Champion Series Class FD Multi-Channel Car Audio Stereo Amplifier w/Wired Bass Boost Remote Free Alphasonik Erabuds : Electronics