The Vibe SLICK8D2 is an 8 inch passive subwoofer engineered for high excursion low frequency performance using a large magnet assembly and a precision FEA composite cone. It features a 2 inch 4 layer dual 2 ohm voice coil, poly cotton spider, wide roll stitched butyl foam surround and spring loaded terminals for reliable connection. This subwoofer is designed for use in a powered enclosure with an external amplifier and suitable low frequency tuning; exact enclosure specs and amplifier settings depend on system goals and are not provided.