Pioneer TS-A301S4 | 500W RMS 12" Champion Series Subwoofer
Amazon.com: Pioneer TS-A301S4 Champion Series 12" 1600 W Max Power, Single 4 Ohm Voice Coil - Component Subwoofer : Electronics
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
2 X Pioneer TS-300D4 12 Inch 1400 Watts Max Power Dual 4-Ohm Voice Coil