Transistor network electrophone '' Sonnet-208-stereo ''.
Electric record players and electrophones on semiconductorsDomesticSince the fall of 1986, the transistor network electrophone "Sonnet-208-stereo" has been produced by the Kazan Electrotechnical Plant. Stereophonic electrophone "Sonnet-208-stereo" consists of an electric player with an audio frequency amplifier and 2 small-sized acoustic systems. The model is equipped with an EPU type 2-EPU-71S with a low-speed motor and a magnetic head with a diamond needle of the Belgian company Orthophone. The EPU has a hitchhiking, a device for adjusting the rotational speed of the disk. The electrophone can also be used as an ultrasonic frequency signal, sound sources can be connected to its inputs, there is a stereo phone jack. The ultrasonic device has protection against short-circuit in the load, the speakers have built-in overload indicators. Disk rotation speeds 33, 45 rpm. Knock coefficient 0.1%. Nominal operating frequency range for voltage 20 ... 25000 Hz, sound pressure 63..16000 Hz. SOI 0.5%. Crosstalk attenuation between channels 45 dB. Dimensions of the model - 400х365х155 mm. AC - 265x175x160 mm. Weight 6.5 and 3.3 kg. The price with the AU is 220 rubles. Since 1988 the Sonet EF-208S electrophone has been produced. In 1990, the electrophone was modernized and produced under the name "Sonnet EF-208S-2". The main differences between this model and the 208 are a different design, electronic switching of input modes and mono / stereo modes, the absence of a speaker mute button. The speaker was automatically turned off when the headphones were connected. The power amplifier is assembled on transistors or on 2 microcircuits of the TDA-2030 type.
