Cerwin-Vega Mobile Xed Series Svc 4-ohm 12" 1,000-watt Shallow Subwoofer in the Mobile Audio department at Lowes.com
Amazon.com: Cerwin-Vega V124DV2 12" Subwoofer 1300W Max Power Handling 450W RMS 4 ohm, Dual Voice Coil, Car Subwoofer for Enhanced Audio Quality and Santoprene Surround, Single Unit : Electronics
User manual Cerwin-Vega VEGA124 (English - 4 pages)