JBL GT-BassPro12 Ported powered subwoofer with 12" sub and 150-watt amp at Crutchfield
JBL Single 12" Car Audio Subwoofer Sealed Enclosure
JBL BASSPRO 8" Single-Voice-Coil Loaded Subwoofer Enclosure with Integrated Amp Black SUBBPSL2AM - Best Buy
JBL BassPro 12 12" Car Audio 450W Max Power with Built-in Amplifier Subwoofer 50036368308 | eBay
Amazon.com: JBL GT-BassPro12 12-Inch (300mm) Car Audio Powered Subwoofer System, black : Electronics
JBL BassPro Nano Compact powered subwoofer with 6"x8" sub and 100-watt amp at Crutchfield
JBL BassPro Hub 11" Single-Voice-Coil 2-Ohm Subwoofer with Integrated 200W Class D Amplifier Black JBLBASSPROHUBAM - Best Buy
JBL 8" Amplified Ported Subwoofer Enclosure with Sub Level Control
PyleUsa 10-Inch Low-Profile Amplified Subwoofer System - 900 Watt Compact Enclosed Active Underseat Car Audio Subwoofer with Built in Amp, Powered Car Subwoofer w/Low & High Level Inputs - PPLBX10A
JBL BassPro 12 | 12" (300mm) Car Audio Powered Subwoofer System with Slipstream Port Technology
JBL BassPro Hub | 11" (279mm) Spare tire subwoofer with built-in 200W RMS amplifier with remote control.