Pioneer TS-D10D2 D Series 10" subwoofer with dual 2-ohm voice coils + Infinity Primus
Pioneer Premier TS-W3001D2 at Onlinecarstereo.com
Pioneer Premier TS-W2502D2 10" Champion Pro Series 3000W Subwoofer
Toro Audio FORCE 12 Car Subwoofer | 12 Inch Subwoofer | 1500 Watts RMS – TORO AUDIO
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