Excellence from Excelon Kenwood's Excelon Series mobile audio components feature their highest level of technology in advanced designs that give you the great sound and quality you expect from Kenwood. Their subwoofer enclosures are built to last, with solid construction and subs that are made to kick out the jams. Subs built to dish it out The P-XW1221SHP comes loaded with one 2-ohm 12" Excelon Series subwoofer. The sub's polypropylene cone features a diamond array pattern to minimize distortion, while the rubber surround and computer-optimized stress-controlled spider keep things on track. The speaker is designed to dissipate heat generated by extended high-powered use, with internal works that direct airflow to avoid overheating. A box made to take it The rugged enclosure is built from 5/8" MDF with a 3/4" thick internal baffle to give the sub solid support. The box's slant-back design suppresses standing waves which can interfere with bass response, and allows it to fit neatly behind the rear seat of an SUV. Rounded port corners reduce port noise and airflow resistance. The P-XW1221SHP can be used in front-facing, rear-facing, or down-firing applications. A steel-mesh grille protects the speaker from accidental damage. This box handles up to 500 watts RMS, so you'll want an amplifier with the power to get the best from this enclosure. The P-XW1221SHP is performance-matched to Kenwood's Excelon X502-1 amp (sold separately). Whatever power source you choose, you'll get huge bass with the performance and quality you need.