Acoustic system '' 35 AC-213 ''.
Acoustic systems, passive or active, as well as electro-acoustic units, hearing aids, electric megaphones, intercoms ...Passive speaker systemsThe active acoustic system "35AS-213" (S-70) has been produced since the fall of 1980 by the Popov Riga Radio Plant. The speaker is designed for high-quality reproduction of sound phonograms. The speaker system consists of a built-in AF amplifier with EMOS and three loudspeakers of direct radiation. In the UZCH there are tone controls for MF and HF. When the amplifier is turned off, the speaker can be used as a passive three-way loudspeaker. Below is an advertisement for the AU in Radio No. 5.6 for 1981.
