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Amazon.com: Pair of Gravity G5 12 Inch 6000 Watt Package Car Audio Subwoofer w/ 4 Ohm DVC Power (2 Woofers) : Electronics
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Amazon.com: PYRAMID WX65X 6.5" 600 Watt Car Audio Subwoofers Subs Power Woofers 4 Ohm : Electronics
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