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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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PreSonus Eris Sub8 8" Compact Studio Subwoofer with Software Suite #E SUB 8 Studio Monitors - Newegg.com
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