Pioneer TS-A120B Ported enclosure with one A-Series 12" 2-ohm subwoofer at Crutchfield
Pioneer TS-A2000LD2 Shallow-mount 8" subwoofer with dual 2-ohm voice coils at Crutchfield
Amazon.com: Pioneer TS-A301D4 Champion Series 12" 1600 W Max Power, Dual 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
Pioneer 12" Single-Voice-Coil Subwoofer with Enclosure Black TSSWX3002 - Best Buy
Amazon.com: Pioneer TSW312D4 Champion Series 12" 1500 Watt Dual 4 Ohm Voice Coil DVC Car Subwoofer : Electronics
Pioneer ts-w5102-spl subwoofer - Mobile Image | Sioux City's Best Choice for Car Audio, Remote Starts, and Auto Window Tinting