Subscriber loudspeaker "Riga".
Subscriber loudspeakers.DomesticSince the beginning of 1965, the subscriber loudspeaker "Riga" has been produced in the Daugavpils prison OTs 78/3. This AG is one of the variants of the subscriber loudspeakers already described. AG type - 0.15GD III-3-6. The name “Riga” is abstract, it appeared in the products of OTs 78/3, then it disappeared. The subscriber loudspeaker "Riga" is intended for listening to programs transmitted over local wire radio broadcasting networks with a voltage of 30 volts. The range of sound frequencies reproduced by the loudspeaker is 1500 ... 5000 Hz.
