The km-rsw powered subwoofer was introduced in 1994 and manufactured until 1997 specifically for U.S. Armed Forces worldwide distribution (included worldwide power supply). The km line was the last line Klipsch made specifically for our U.S. Armed Forces overseas. For more information on this model please make a selection on the left. To connect with other people who are passionate about audio and interested in Klipsch products visit our open forum bulletin board.