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JBL GTO Series GT120 12" 4-ohm Subwoofer at Crutchfield
JBL GT Series GT122D 12" Subwoofer Peak Power 280w Running 140w Works USA for Sale - Holidays.net
JBL GT5-1204BR Single 12" Bass-Reflex Subwoofer Box/Enclosure
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JBL GT5-1202BR_GX-A3001 (gt51202br_gxa3001) Single 12" GT Series
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JBL BassPro 12 Ported powered subwoofer with 12" sub and 150-watt amp at Crutchfield
Sub JBL GT MADE IN USA - YouTube
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JBL GTO Series GT100 10" 4-Ohm Subwoofer at Crutchfield
Amazon.com: JBL GT-BassPro12 12-Inch (300mm) Car Audio Powered Subwoofer System, black : Electronics
12' subwoofer bass test JBL GT Series - YouTube
