JBL GT122D 140W Max 280W Dual 4ohm Coils USA Made 12" sub-woofer | Reverb
W12GTI II | 12 inch Differential Drive Design Subwoofer
I Thought It Would be Better? JBL BASSPRO 12 Powered Car Audio Subwoofer - YouTube
JBL GT12-BP 1200 Watt 12" Subwoofer Ported BANDPASS Sub Box LED iLLumination | eBay
JBL GT Bass Pro 12 vs. Rockford Fosgate P300 12 - Battle of Powered Subwoofers - Decibel Results!! - YouTube
Amazon.com: JBL GT-BassPro12 12-Inch (300mm) Car Audio Powered Subwoofer System, black : Electronics
W12GTI II | 12 inch Differential Drive Design Subwoofer
JBL GTO Series GT120 12" 4-ohm Subwoofer at Crutchfield
Amazon.com: JBL GT-12BP - 12” car audio Bandpass Subwoofer Box, Black : Electronics
Audio Jam Inc. - Some car audio fans love the clarity of sealed subwoofer enclosures. Others crave the added power of vented enclosures. The GT-12BP bandpass subwoofer offers both. It delivers accurate