Since 1956, the Spalis tape recorder (Elfa-10) was produced by the Elfa Vilnius Electrotechnical Plant.
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The first tape recorders were released in a carbolite case, then in a wooden case with a covered dermantine.
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The tape recorder is designed to record and play sound phonograms.
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Two-track recording, conducted on a standard magnetic tape.
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Cassettes for 360 meters of tape are used in the tape recorder, which makes it possible to record for an hour at a tape speed of 19.5 cm / sec on 2 tracks.
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The transition from one track to another is carried out by turning the coils.
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Tape recording can be done from a microphone, pickup, receiver and radio line.
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The recording level is controlled by an optical indicator 6Е5С.
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There is fast-forward tape in both directions.
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The universal amplifier is assembled on lamps: 6N2P, 6N1P, 6P14P, which are used during recording and playback.
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The rectifier uses a lamp type 6Ts4P, later diodes.
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The amplifier has a volume control and a tone control for treble.
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The amplifier reproduces a frequency band from 70 to 8000 Hz (on a LAN), its output power is 1 W.
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The tape recorder is controlled by the volume, timbre and five keys located on the upper panel of the LPM.
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The tape recorder is assembled in a suitcase measuring 410x300x175 mm and weighing 15 kg.
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Power consumption 75 watts.
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The microphone is MD-41.
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During the release of the tape recorder has undergone several improvements.
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