Acoustic system '' 4AC-3 ''.
Acoustic systems, passive or active, as well as electro-acoustic units, hearing aids, electric megaphones, intercoms ...Passive speaker systemsThe acoustic system "4AS-3" has been produced since 1979. It is intended for sounding educational institutions, such as classrooms and corridors. A toroidal transformer and a broadband loudspeaker 4GD-35, later 8GDSH-1, are installed inside the speaker. The effective operating range of reproducible frequencies is 63 ... 12500 Hz. Uneven frequency response - 16 dB. Resistance 4 Ohm. Passport power 4 (8), short-term 8 (15) W. Speaker dimensions - 200x290x80 mm. Weight 1.8 kg. Since 1982 AS "4AS-3" has been produced in a plastic case and with a loudspeaker 8GDSH-1, instead of 4GD-35. The parameters for this speaker are given in brackets.
