ISE 2014: d&b audiotechnik Showcases the xC-Series Column LoudspeakersFebruary 10, 2014 | Home / February 10, 2014 rave-video / ISE 2014: d&b audiotechnik Showcases the xC-Series Column Loudspeakers ISE 2014: d&b audiotechnik Showcases the xC-Series Column Loudspeakers