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Amazon.com: Alpine SWT-12S4 1000w 12" Subwoofer in Bass Tube 4-Ohm Sub+Bluetooth Speaker : Electronics
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Amazon.com: Alpine SWT-12S4 1000w 12" Subwoofer in Bass Tube 4-Ohm Sub+Bluetooth Speaker : Electronics
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Alpine R-W10D4 Type R 10" Dual 4 OHM Subwoofer with GTR-601 Mono Subwoofer Amplifier 600 watts RMS x 1 at 2 ohms - Creative Audio
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