SONAR 115 Sub D 15" Active Bass-Reflex Subwoofer 1500WThe SONAR 115 Sub D is a powerful, state of the art powered subwoofer for extending the bass response of SONAR full range models, but also many other types of speakers. The particularly powerful 15" woofer, the 1500 watt power amplifier and the meticulous HK Audio acoustic engineering guarantee an impressively powerful bass experience. The SONAR 115 Sub D is controlled by a 24 bit DSP with an illuminated LCD screen, which can be used to conveniently