Amazon.com: Massive Audio SUMMOXL124-12 Inch Car Audio Subwoofer, High Performance Subwoofer for Cars, Trucks, Jeeps - 12" Subwoofer 1500 Watt RMS, 3000w MAX Dual 4 Ohm, 3 Inch Voice Coil. Sold Individually : Electronics
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Amazon.com: Massive Audio HIPPOXL64 – 6 Inch Car Audio Subwoofer, High Performance Subwoofer for Cars, Trucks, Jeeps - 6" Subwoofer 300 Watt RMS, 600w MAX Dual 4 Ohm, 2 Inch Voice Coil. Sold Individually : Electronics
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Massive Audio TKO Series 10-Inch 300-Watt-RMS Dual 4-Ohm Subwoofer in the Mobile Audio department at Lowes.com
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Amazon.com: Massive Audio HIPPOXL152 – 15 Inch Car Audio Subwoofer, High Performance Subwoofer for Cars, Trucks, Jeeps - 15" Subwoofer 2000 Watt RMS, 4000w MAX Dual 2 Ohm, 3 Inch Voice Coil. Sold Individually : Electronics