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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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JBL BassPro SL2 Active Underseat Car Subwoofer with built in amplifier - Under Seat 8'' Subwoofer Car with 125 Watt Power Amplifier : Amazon.co.uk: Electronics & Photo
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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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