Power Acoustik Exclusive GW-124 12-inch Subwoofer | 2,500W Max | Gothic Series - Walmart.com
What Is a Subwoofer? How Bass-Focused Speakers Work
BassLink SM2 | ["Add high-performance bass with a low-profile woofer enclosure", "Powered, 8\" (200mm) compact car audio under seat woofer system "]
Meyer Sound LINA Compact Line Array and 750-LFC Subwoofer System | Sweetwater
Signa S2 Universal Sound Bar & Wireless Subwoofer | Polk Audio
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