Package: Alpine Type-S SWS-12D2 12" 1500 Watt Dual 2-Ohm Car Subwoofer + Rockville RSV12 Single 12&rdquo; Vented Subwoofer Enclosure + Sub Box Wire Kit With 14 Gauge Speaker Wire + Screws + Spade Terminals Alpine Type-S SWS-12D2 12" Subwoofer. Peak Power Output: 1,500 watts. RMS Power Output: 500 Watts. Dual 2-Ohm Voice Coils. Massive Voice Coils High Strength Steel Frame. Concealed Mount Gasket System. High-Grade Strontium Ferrite Magnets. Built Like Type-R More Bass In Less Space. Alpines Patented Airflow Management System Keep it Cool. 8 AWG Push Terminals. Kevlar Reinforced Pulp Cone. HAMRS Santoprene Rubber Surround Rockville RSV12 Single 12" Vented Subwoofer Enclosure. Machine precision cut mounting holes. Top of the line Glue for extra durable adhesion. High quality GOLD spring loaded terminals Designed, tested, and engineered to work with most of todays popular woofers. These enclosures are built with the quality additives needed to maximize the performance of any sound system.