Subscriber loudspeaker "Iskra".
Subscriber loudspeakers.DomesticSince 1970, the subscriber loudspeaker "Iskra" has been producing the Novosibirsk plant of low-voltage equipment. The subscriber loudspeaker "Iskra" belongs to the 3rd class in accordance with GOST 5961-66. It is designed to reproduce one broadcasting program transmitted over local wire broadcasting networks with a voltage of 30 volts. The model uses a 1GD-30 dynamic head, which reproduces sound frequencies from 160 to 5000 Hz. The transitional transformer has an input impedance of 3600 ohms. The variable resistance of the volume control has a nominal value of 470 kOhm. The average sound pressure developed by the loudspeaker is 0.25 Pa. The overall dimensions of the Iskra subscriber loudspeaker are 250x142-69 mm. Weight 1 kg. Retail price 5 rubles.
