Astra MK-111S and Astra MK-111S-1 tape recorders.

Reel-to-reel tape recorders, stationary.Reel-to-reel tape recorders, stationaryThe tape recorders "Astra MK-111S" and "Astra MK-111S-1" from the beginning of 1989 and 1991 were produced by the Leningrad plant Tekhpribor. In 1989, the Tekhpribor plant produced the first batch of reel-to-reel tape recorders of the first complexity group Astra MK-111S. The tape recorder is distinguished by very high technical indicators, the presence of a PA with a maximum power of 25 W, a built-in broadband speaker with a power of 4 W, and a low weight. The LPM control knob was replaced by an electronic-logical control system, with the ability to select the operating mode of the device in any sequence, and the dial indicator of the recording level and the mechanical tape consumption meter were replaced with an electronic display unit. However, tape recorders with pointer indicators were also produced. Magnetic heads have a service life of up to 5000 hours. The amplifier has been modified taking into account the increase in power with electronic protection. Magnetizing system with automatic and direct regulation of the bias current. Belt speed: 19.05 and 9.53 cm / sec. Detonation ± 0.08 and ± 0.15%. Frequency range 25 ... 28000 and 31.5 ... 18000 Hz. Weighted signal-to-noise ratio 60; 54 dB. Power consumption 50 ... 180 W. The maximum output power to the built-in and external speakers is 2x8 and 2x60 W. Dimensions of the model - 463x414x170. Weight 16.5 kg. Since 1991 the plant has been producing a tape recorder "Astra MK-111S-1C" in design and parameters, almost the same as the base model, but with a revised electrical circuit and, accordingly, with changes in the installation of the model.