JL Audio PWM112-JXWX One 12WX-4 in a Sealed Enclosure, Rear-Firing, Gray Carpet Finish. Includes JX-250/1 amplifier. Powered Subwoofer System with Single 12WXv2-4 Subwoofer Driver, Dark Gray Carpet (175 W, 4 Ohms) - Sealed Enclosure PowerWedge MAX subwoofer systems combine rugged, great-sounding JL Audio WXv2 Subwoofer Drivers with a precisely engineered, USA-built enclosure and a perfectly matched JL Audio JX amplifier The JX amplifier is mounted to the PowerWedge Max behind a sleek amplifier shroud with a durable black textured finish System is shipped wired, loaded and ready to install CNC-Cut High-Grade MDF, Built-in JX250/1 (175 W @ 4 Ohms)