The KMT218 is much more than a standard dual 18" powered subwoofer. It's a high performance sub-bass system designed for medium-large throw applications, like theaters, clubs, and concert halls, portable and permanent AV installations. KMT218 features two 800 watt 18"drive units with magnet structure engineered for maximum linear excursion. The KMT218 is designed to be powered by KMT218 Speakon output and to be easily integrated with KY102 mid-high speakers.