150dB from a Factory Loaded Subwoofer Box? Kicker L7 Quad Box Overview and Test [4K] - YouTube
QUAD 12" L7R Subwoofer Enclosure | KICKER®
KICKER Single L7S 10" Loaded Truck Enclosure - AudioWorks of Delaware | Turn It On! | Car Alarms - Remote Starters - Audio Systems - Navigation Systems - Multimedia Systems - Custom