V max-124 Cerwin Vega 12" 1000 Watt Dual 4-Ohm Subwoofer
Amazon.com: Cerwin-Vega BKX212V 12" 4Ω 3000W Dual-Loaded Subwoofers Factory-Tuned Enclosure Comes with Amplifier : Electronics
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