JBL BassPro 12 Ported powered subwoofer with 12" sub and 150-watt amp at Crutchfield
JBL GT-BASSPRO12 12-Inch (300Mm) Car Audio Powered Subwoofer System – Autosparz
Are you looking for an easy way to add high-output low-distortion bass to your vehicle's audio system? Then JBL's… | 12 inch subwoofer, Subwoofer, Powered subwoofer
Amazon.com: JBL GT-BassPro12 12-Inch (300mm) Car Audio Powered Subwoofer System, black : Electronics
JBL GT Bass Pro 12 vs. Rockford Fosgate P300 12 - Battle of Powered Subwoofers - Decibel Results!! - YouTube