Amazon.com: 2x Rockford Fosgate Prime R2D2-10 10" Subwoofer 500W Dual Voil Coil 2-Ohms Mica injected polypropylene cone - Mica injected polypropylene cone Integrated PVC trim ring : Electronics
Amazon.com: Kicker 44CWCD104 Dual 4-Ohm Car Subwoofer Sub Bundle with dB11 RMS Car Amp and Remote, Single Box Kit: Wire,Screws,Spades, RSV10 Single Vented Subwoofer Box and RWK81 Amp Wire Kit with RCA (
Amazon.com: Kicker 44CWCS104 CompC 10" 500W Single 4-Ohm Car Subwoofer Bundle with Rockville RSV10 Single Vented Subwoofer Enclosure Box and Single Sub Box Enclosure Installation Kit : Electronics
Amazon.com: KICKER 48CDF124 (2) Comp 12" Subwoofer in Down Firing Enclosure with CXA800 Amplifier and Wire kit : Electronics
Kicker Bundle Compatible with Universal Vehicle 43C124 Dual 12" Loaded Sub Box Enclosure
Amazon.com: Rockville W8K9D4 8" Inch 2000w Peak Car Audio Subwoofer Dual 4-Ohm Sub 500w RMS CEA Rated, Black : Electronics