Reel-to-reel tape recorder "Sonata".
Tape recorders and radio tape recorders.The reel-to-reel tape recorder "Sonata" has been prepared for release since 1966 by the Velikie Luki Radio Plant. Two-speed tape recorder "Sonata" is made on the basis of LPM tape recorder "Chaika-66" and is intended for recording and playback of phonograms. There is a separate adjustment of the recording and playback level, the ability to listen to the recording on the speakers, temporarily stop the tape, without erasing the superimposition of a new one on the old recording. The recorder is designed for Type 6 magnetic tape and is specified for use with that tape, but other tapes may be used. The speed of the magnetic tape is 19.05 and 9.53 cm / sec, the detonation coefficient is 0.3 and 0.6%. Duration of continuous recording at a speed of 9.53 cm / sec when using reels with a capacity of 250 m with tape type 6 - 2x45 minutes. The frequency range of the through channel along the electrical path at a speed of 19.05 cm / s is 40 ... 12500 Hz, at 9.53 cm / s - 63 ... 1000 Hz. The noise level is not worse than -40 dB. Rated output power 1 W with THD on LV 4% on loudspeakers 5%. Tone adjustment range LF ± 6 dB, HF 10 dB. Sensitivity from microphone input 3 mV, receiver and pickup 150 mV. The speaker system of the tape recorder consists of two loudspeakers of the 1GD-28 type, developing a sound pressure of 0.8 N / m2. Powered by 127 or 220 V. Power consumption 80 watts. The dimensions of the tape recorder are 158x315x376 mm, its weight is 10 kg.