GT-BASSPRO12 | Subwoofer speaker with built-in 150W RMS amplifier with bass port for a surprising bass experience
JBL G12 BLUETOOTH SPEAKER
JBL BassPro 12 Ported powered subwoofer with 12" sub and 150-watt amp at Crutchfield
GT5-12 | Quality 12 inch Single Voice Coil (SVC) Subwoofer
JBL GT12-BP 1200 Watt 12" Subwoofer Ported BANDPASS Sub Box LED iLLumination | eBay
JBL GT5-12 12" Single 4 ohm GT Series 1100W Car Subwoofer
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
JBL GT12BP. Bandpass un Toyota Corolla E180 - YouTube