The Tangent Series Tangent Theater was first introduced in 1993 and manufactured by Klipsch until 1994. While no longer in production, Tangent Theater model loudspeakers are still owned and listened to by Klipsch fans around the world as part of home theater surround sound systems. To connect with other people who are passionate about audio and interested in Klipsch Classic products, visit one the several Klipsch Classic areas on our open forum bulletin board.