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Old School 90's JBL GT Series GT122 140W-280W Single Voice Coil 12" Subwoofer | eBay
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JBL GT Series Subwoofer and Clarion Speakers - Roller Auctions
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GT-BASSPRO12 | Subwoofer speaker with built-in 150W RMS amplifier with bass port for a surprising bass experience
JBL GTO Series GT120 12" 4-ohm Subwoofer at Crutchfield
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