What's in the Box 1 bandpass subwoofer box Owner's manual Technical Specifications: Description: 12" (300mm) bandpass subwoofer enclosure Woofer: 12" 300mm. JBL GT-12BP GT Series 12 Inch Loaded Bandpass Subwoofer Enclosure. The polypropylene woofer cone in the GT-12BP is engineered for superior rigidity, reliability and sensitivity. The result is increased low-frequency output and powerful, natural-sounding bass.
The GT-12BP's enclosure is vented, which enables the subwoofer to deliver ultra-low bass at higher sound pressure levels than a sealed enclosure. Some subwoofers are meant to be seen as well as heard. The GT-12BP features an acrylic window shaped like the JBL exclamation point and orange illumination, so you can look into the enclosure and see what legendary bass looks like. The GT-12BP bandpass enclosure doesn't just produce signature JBL bass performance, it protects it.The rigid box keeps the woofer safe from anything that might slide around in your trunk.