Klangfilm performance device system

The assembly consists of five interconnected devices: two playback units, a recording unit, a film projector, and a power unit. The perftape system allowed for the sound mixing of 16mm magnetic tapes, such as one reel with dialogue and another with music or ambient sounds. The system was in use at the television station from approximately 1970 to 1980. The device was called a “perf device“ by TV staff. “Perf" comes from the English word "perforated," which means "to have holes," as the films/magnetic tapes were perforated. The Danes called the films "perfbånd," which led to them being called "perf tapes" here. There were no similar devices in the country from the television station's founding in 1966 until 1980. Therefore, the television station was the only place in the country that offered this technology. The television station also serviced private individuals who requested it.