JBL BassPro SL Loaded Subwoofer Enclosure: Enjoy booming bass on your next road trip thanks to a 125W integrated Class D amplifier for balanced high- and low-frequency sounds. Custom electronic circuitry ensures lush audio and a wide range of output levels.
I was worried that I would not get the dynamics I wanted from a under seat sub woofer ... It has exceeded my expectations and was a pretty straight forward install as well.... It's a keeper