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Amazon.com: JBL GT-BassPro12 12-Inch (300mm) Car Audio Powered Subwoofer System, black : Electronics
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JBL SUB BassPRO12 450 Watts Amplified 12" Ported Subwoofer Sub Box Built In Amp 50036368308 | eBay
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Amazon.com: JBL GT-BassPro12 12-Inch (300mm) Car Audio Powered Subwoofer System, black : Electronics
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JBL GT-BASSPRO12 12" 450W SINGLE ENCLOSURE PORTED LOADED CAR SUBWOOFER for Sale in Portland, OR - OfferUp
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GT-BASSPRO12 | Subwoofer speaker with built-in 150W RMS amplifier with bass port for a surprising bass experience
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