Transistor network electrophone '' Corvette-248-stereo ''.
Electric record players and electrophones on semiconductorsDomesticSince 1986, the "Corvette-248-stereo" transistor network transistor microphone has been produced by the Kirovsky plant Ladoga. An electrophone with a vertical EPU and a direct drive of the disk, has a super low-speed DC motor, a control circuit for the operation of the engine, a tangential tonearm, a magnetic head GZM-205D. A downforce stabilizer is installed on the head of the tonearm holder, which also cleans the plate from dust and redistributes the electrostatic charge. For the convenience of selecting tracks and determining the position of the tonorm when playing in a darkened room, an illumination of the working area is introduced. The amplifier is protected against short-circuit in the load. It is possible to connect a tape recorder for recording and playback, as well as headphones. The microphone is equipped with two three-way acoustic systems 10AC-248 with a bass reflex. The range of sound frequencies reproduced by voltage is 40 ... 20000 Hz. Since 1988, the electrophone has become known as "Corvette EF-248-stereo", here the head of the pickup GZM-105D with a diamond needle is used, which is why the frequency range in voltage has risen to 20 ... 25000 Hz. The rest of the models are the same. Disk rotation frequency 33 and 45 rpm, detonation coefficient 0.18%; the background and interference level of the EPU is not worse than -56 dB; rated output power of ultrasonic frequency converter - 2x10 W; SOI - 0.25%; signal-to-noise ratio 65 dB; power consumption 80 W; dimensions of the microphone 422x165x447 mm, speaker 444x250x182 mm; the mass of the microphone and one speaker is 11.5 / 7.62 kg.
