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Subwoofer with built -in amplifier 600 watts - 12 inch woofer - 25 to 3500 Hz crossover - RCA (BC112SA) | Caliber
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Amazon.com: PRORECK PR-122M Complete 1500W Dual 12" Car Subwoofer, Includes Loaded Enclosure with Mono Block Amplifier,Wiring Installation Kit : Electronics
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