CEDIA 2018: Klipsch Intros C Series Subwoofers With Piano Finish and Ethernet Input September 7, 2018 | Home / September 7, 2018 rave-video / CEDIA 2018: Klipsch Intros C Series Subwoofers With Piano Finish and Ethernet Input CEDIA 2018: Klipsch Intros C Series Subwoofers With Piano Finish and Ethernet Input