Unmatched in flexibility the SQX Ultra High-Quality Subwoofer will play any type of music you have with the utmost clarity and intensity. With a Quad 1 Ohm voice coil configuration and a Massive range in frequencies, this woofer will excel in any high-end application. State of the art motor structure that incorporates a powerful 300 oz magnet. Hand wound, heat treated 3 inch voice coil, custom designed Kevlar/Glass Fiber cone. Two custom reinforced, woven double laminated spiders with woven tinsel leads. At 101 dB efficiency this woofer will play louder than most woofers with a 3000 watt RMS rating. Less Power - More SPL. This woofer is Massive in every way~