Acoustic system '' 10 MAS-1 ''.

Acoustic systems, passive or active, as well as electro-acoustic units, hearing aids, electric megaphones, intercoms ...Passive speaker systemsThe acoustic compression system "10MAS-1" has been produced since 1972 at the Riga EMZ, the Tallinn plant "Punane-RET", the Berdsk radio plant and the Kiev plant "Kommunist". The speakers are designed for high-quality reproduction of sound phonograms. Included in the set of electrophones "Accord-001-stereo" and "Accord-101-stereo", radio "Estonia-006 stereo", "Vega" products. AC - two-lane, consists of a closed wooden case, lined with valuable species of wood. The front panel is covered with radio fabric. The body contains two loudspeakers 10GD-30 / E (LF) and 3GD-15M (HF) connected through an RC filter. Speaker impedance 8 ohms. Rated input power 10 W. Operating frequency range 80 ... 12000 Hz. Speaker dimensions - 428x270x230 mm. Weight 8.2 kg. Since 1973, some factories have launched the production of the modernized 10MAS-1M speaker system, where the 10GD-30 / E low-frequency loudspeaker was replaced by a 10GD-30B, and the 3GD-15M high-frequency head was replaced with a 3GD-31. At the same time, the frequency range expanded to 63 ... 18000 Hz. The weight has decreased to 7.5 kg and the dimensions have decreased to 425x272x234 mm. "10MAS-1M" was produced by the Berdsk radio plant and the Kiev plant "Communist". Other enterprises also produced "10MAS-1" for a long time. Since 1979, the factories have been producing AC type "10AS-401", modernization "10MAS-1M". The heads 20GDN-1-8 and 5GDV-1-8 are used here. Parameters, design, dimensions and weight remain the same. Since 1979, the Kiev plant "Communist" for the tape recorder "Jupiter-203 stereo" has been producing AC "10AC-201" with a maximum power of 16 W and a frequency range of 70 ... 18000 Hz.