Amazon.com: JBL GT-12BP - 12” car audio Bandpass Subwoofer Box, Black : Electronics
Amazon.com: JBL SUBBP12AM - 450 Watts (150W RMS) 12” Amplified 12 in. Ported Subwoofer with Sub Level Control and Distortion Free Bass with Gravity Magnet Phone Holder Bundle : Electronics
Amazon.com: JBL 8" Amplified Ported Subwoofer Enclosure with Sub Level Control, Black : Electronics
JBL GT-BassPro12 Ported powered subwoofer with 12" sub and 150-watt amp at Crutchfield