The IS213 subwoofer is an ultra-compact, high-powered subwoofer intended to be used in ground stack configurations and to fit in compact spaces. The enclosure is loaded with two light-weight, 13” ND13-S Kevlar® Neodymium drivers utilizing Adamson’s Advanced Cone Architecture. It is mounted in an ultra-efficient front-loaded enclosure, designed to reproduce clean, musical low frequency information.