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Amazon.com: 1x Gravity 12 Inch 2000 Watt Car Audio Subwoofer w/ 2 Ohm DVC Power 12 in. Sub - Feature Dual Voice Coil, Thick Magnet, Design for Car, ATV, Van, High Performance Car Show : Electronics
Amazon.com: Harmony Audio 2X HA-C122 Car Competition 12" Sub 2200W Dual 2 Ohm Subwoofer New : Electronics
Amazon.com: Rockford Fosgate R2D2-12 12" 500W 2-Ohm Car Audio Power Subwoofer Sub (4 Pack) : Electronics
Amazon.com: Cadence 12 Inch Car Subwoofer, High Performance 1600 Watts Dual 2 Ohm 2.5 Inch Black Aluminum 4 Layer Voice Coil, Beast Series Car Audio Woofer BT12D2, Single : Electronics
Amazon.com: Savard Speakers HiQ Series 6.5" inch Dual 2 Ohm Subwoofer : Electronics