Network tube radio gramophone "Concert-2".
Electric players and tube electrophonesDomesticThe "Concert-2" (EF-4) radio gramophone has been produced by the Moscow Electric Machine Building Plant since the beginning of 1962. The radio gramophone "Concernt-2" is designed on the basis of the "Concert" electric player. It operates on 127 and 220 V alternating current and is designed to reproduce ordinary and long-playing records at a disc rotation speed of 78, 45, 33 and 16 rpm. The auto-stop is inertial, it is triggered when the needle moves along the treadmill of the plate. The amplifier with a push-pull output stage provides a frequency range from 30 to 15000 Hz, with a THD of 3% and a maximum output power of 5 W. The LF amplifier is loaded onto two series-connected 2GD-3 loudspeakers with different resonant frequencies of 80 and 100 Hz. The AC provides a sound pressure frequency band of 90 ... 10000 Hz. Piezoelectric pickup UZ-2 with crystal of Rochelle salt. Its frequency band is 50 ... 10000 Hz. The radio gramophone consumes about 70 watts of power. It is decorated in a cardboard suitcase and pasted over with a leather substitute.
