Amazon.com: Kicker 45L7R154 15" 1800 Watt L7R Car Subwoofer, Solo-Baric Sub L7R154 DVC 4-ohm : Electronics
Amazon.com: KICKER 43CXA18001 Universal Vehicle Class D 1800-Watt Car Audio Subwoofer Amplifier and 45L7R152 L7R Square 15" Sub Dual 2 Ohm Subwoofer L7R15 : Electronics
Amazon.com: (2) Kicker L7S154 15" 4000w Solo Baric L7 Car Subwoofers+Vented Sub Box+Wire Kit