Anodized Aluminum Cone The rigid, lightweight cone design eliminates flex under high power applications, improving the woofer's bass response and allowing the woofer to handle more power | VAST Technology The highly flexible and durable Santoprene surround features our VAST technology, significantly increasing the subwoofer's effective radiating cone area up to 25% | Spider Plateau Venting Our proprietary spider design provides additional cooling for the voice coil assembly, increasing the woofer's life, as well as improving frequency response | Maximum Motor Performance The motor structure is optimized for maximum magnetic force for power efficiency, while the bumped backplate extends the excursion capabilities, all while aiding in voice coil cooling |