Amazon.com: JBL BassPro Go - in-Vehicle Powered subwoofer & Full-Range Portable Bluetooth Speaker,Black : Electronics
DS18 SQBASS8 8" Under Seat Amplified Powered Car Subwoofer 800 Watts
Source Portable 12v mini high power under seat car subwoofer active car audio slim 8 inch subwoofer on m.alibaba.com
Pyle PLPW12D 12 inch 1,600 Watt Dual 4 Ohm Voice Coil Car Subwoofer
BOSS Audio Systems BAB10 10 Inch Powered Under Seat Car Audio Subwoofer - 1200 Watts Max, Low Profile, Remote Subwoofer Control, For Truck, Boxes and Enclosures - Walmart.com
Amazon.com: Alpine SWT-10S2 10" 1000W Peak/350W RMS Shallow Slim Truck Car Subwoofer Bundle with Rockville ROCK EVERYWHERE Portable Bluetooth Speaker/Waterproof/Wireless Link : Electronics
5inch Square 12v 24 V Ultra-thin Portable Car Active Audio Subwoofer Truck Bluetooth Bass Auto Stereo Amplifier Home Speaker - Subwoofers - AliExpress
JBL BassPro SL 2 Compact powered subwoofer: 125 watts and an 8" sub at Crutchfield
JBL BassPro Go Powered subwoofer (100-watt RMS amplifier) and built-in portable Bluetooth® speaker at Crutchfield
BassLink SM2 | ["Add high-performance bass with a low-profile woofer enclosure", "Powered, 8\" (200mm) compact car audio under seat woofer system"]
Amazon.com: Yaeccc 10 Inch 600W Car Under-Seat Sub Woofer Active Powered Amplifier Bass Enclosed : Electronics
Portable 5 Inch 12v 220v Car Subwoofer Speaker Audio Phone Bluetooth Outdoor Xp Fm Radio Computer Home Motorcycle Car Active - Flexible File - AliExpress