Clear-Com was founded in San Francisco, California, on April 18, 1968, by audio engineer Charlie Butten and his business partner Bob Cohen, a sound company owner who had recently been part of Family Dog Productions organizing dance concerts at the Avalon Ballroom. The first Clear-Com product was the RS-100 intercom station, a portable unit connected using standard XLR-terminated microphone cables.[4] The connection scheme was based on twisted-pairtelephone lines, with full duplex conversations carried on the inner two wires of the microphone cable.[5] Butten added a momentary flashing signal light linked to the third conductor, the cable shield.[6] The arrangement of beltpacks and headsets powered by a 30-volt DC base station allowed technical crew members to hear each other clearly over the loud sound systems of bands such as the Grateful Dead and Jefferson Airplane.[4]
The product line of Clear-Com has expanded beyond party-line wired units to include multi-channel intercoms and wireless technology. Clear-Com patented a multi-channel wired digital intercom system in 2009, used in the HelixNet product line. The company's FreeSpeak wireless intercom was nominated in 2020 for a TEC Award.[7]
Clear-Com was purchased in 2010 by Southern California electronics manufacturer HME, known for supplying wireless headsets for drive-through fast-food restaurant operations.[8] Company headquarters were moved from Poway to Carlsbad, California, in 2018.
References
^Broadcasting Cablecasting Yearbook. Broadcasting Publications. 1983. p. 29.
^Matthews, Doug (2008). Special Event Production: The Process. Routledge. p. 167. ISBN9780750682435.