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Amazon.com: Single Voice Coil Car Subwoofer - 8 Inches, 200 Watts at 4-Ohm Car Audio Powered Subwoofer, Injection Cone with Rubber Edge, High-Powered Car Subwoofer, Audio - PLMW83 : Electronics
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Amazon.com: Rockville RVP15W8 1000 Watt 15" Raw DJ Subwoofer 8 Ohm Sub Woofer 51OZ Magnet : Musical Instruments
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Amazon.com: 5Core 8" Inch Subwoofer Replacement DJ Speaker Car Loudspeaker 100W 4 Ohm WF 8110G : Electronics
Amazon.com: Monoprice 60-Watt Powered Subwoofer - 8 Inch With Auto-On Function, For Studio And Home Theater Black : Everything Else
CT Sounds MESO-8-D4 1600 Watts Max 8 Inch Car Subwoofer Dual 4 Ohm