Amazon.com: JBL BassPro SL2 Active Underseat Car Subwoofer with Built in Amplifier - Under Seat 8'' Subwoofer Car with 125 Watt Power Amplifier : Electronics
JBL BASSPRO GO - Active Subwoofer & Portable Full Range Bluetooth Speakers 200W | eBay
BassPro II | Compact bandpass subwoofer with built-in amplifier, Input for Line, Hi or Lo input
JBL EON718S 18-inch Powered PA Subwoofer EON-718S Active EON700 Series - Pixel Pro Audio
JBL SRX828SP 18" Dual Self-Powered 2000W Active Subwoofer PA / DJ / Club System
JBL PRX518S 500-watt 18" Active Subwoofer • Available from ChurchGear