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
Pioneer TS-WX1210AM 12” 1300 Max Power Ported Enclosure Active Subwoofer with Built-in Amplifier - Walmart.com
Pioneer TS-W305C 12" Component Subwoofer at Crutchfield