Loudspeaker device '' GU-20M ''.
Car radio and electrical equipment.Car radio and electrical equipmentThe loudspeaker device "GU-20M" has been produced since 1974 and is designed to carry out loud directional transmission at a distance of up to 300 meters. The device works with moving objects (cars) and in stationary conditions. It can operate from four broadcast sources and has 4 inputs: laryngophone, microphone, adapter and tape. The pivot mechanism of the device allows the loudspeakers to rotate 175 degrees in both directions with respect to the direction of travel. The device consists of two U-10M amplifiers, a control panel and a GU-20M pre-amplifier, and two GR-1 loudspeakers. Technical data: The nominal output power of each amplifier is 10 watts. The range of reproducible frequencies for sound pressure is 300 ... 3000 Hz. Nonlinear distortion rate 15%. The rated supply voltage is 12.6 V. The power consumed by the amplifier path is no more than 57 W. There is a treble tone control. Photos of the "GU-20M" device are taken from Internet auctions.
