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Amazon.com: Skar Audio SDR-18 D2 18" 1200 Watt Max Power Dual 2 Ohm Car Subwoofer : Electronics
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Amazon.com: Rockville VS10K52 10" K5 1200w Car Subwoofer in Vented Sub Enclosure Box - 2 Ohm : Everything Else
Amazon.com: 10 Inch Car Subwoofer Speaker - 500 Watt High Powered Car Audio Sound Component Speaker System w/ 2 Inch High-Temperature Kapton Voice Coil, 85.6 dB, 8 Ohm, 60 oz Magnet - Pyramid PW1048USX : Electronics
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