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HIFONICS 12 in. 800-Watt 4-Ohm DVC Car Audio Subwoofer Power Bass Sub (3-Pack) 3 x HFX12D4 - The Home Depot
Hifonics MR10BP Car subwoofer passive 800 W | Conrad.com
Best Buy: Hifonics Alpha 15" Dual-Voice-Coil 8-Ohm Subwoofer Blue/Black HAW15D4
HIFONICS 12 in. 800-Watt 4-Ohm DVC Car Audio Subwoofer Power Bass Sub (3-Pack) 3 x HFX12D4 - The Home Depot
Amazon.com: Hifonics Brutus BW-110A - 800 Watts Compact Amplified Under The Seat Car Truck Subwoofer Low Profile with Bass Remote, Great for Vehicles That Need Bass But Have Limited Space, Black :