Excellent condition, sound great, can use as front channel or surround sound system The two-way Synergy Series KSB-1.1 bookshelf loudspeaker was first introduced in 1997 and manufactured by Klipsch until 1999. While no longer in production KSB-1.1 model loudspeakers are still owned and listened to by Klipsch fans around the world as part of two-channel audio and home theater surround sound systems. To connect with other people who are passionate about audio and interested in Klipsch products visit one the several areas on our open forum bulletin board.