Award-Winning Subwoofer from JBL! The JBL Arena X 12-inch (300mm) subwoofer is nothing short of amazing. It is JBL flagship subwoofer and using technology from the JBL Luxury audio division, the features with ultra-high-performance passive subwoofer acoustically designed included cast-frame, composite AL concave cone, with massive 2.5-inch single voice coils for competitive power handling of 800W RMS. Features: The 12 Inch new generation subwoofer be increased to 800W RMS Cast-aluminum frame with Excellent heat radiator ability to support high power stable working state. SVC 2ohms design is more capable for amplifiers stable driving 800w subs. To employ vent airflow management system (VAMS) by pole vent with 8 around venting holes to effectively reduce 2-sides temperature of high-power VC to improve system endurance 100hrs power reliability at least. Benefits: JBL Hi-End subwoofer with elegant design Nitrile-butylene surround with Luxury audio design Aluminum woofer cone and dust cap The basket is a die-cast aluminum design to add rigidity and eliminate multiple acoustic resonances Specifications: 2.5" 2-ohm voice coil Power handling: 800 watts RMS (1600 watts peak) Frequency range: 18–1000 Hz Sensitivity (2.83V/1m): 83 dB