Subscriber loudspeaker "Ob-304".
Subscriber loudspeakers.DomesticSince 1978, the subscriber loudspeaker "Ob-304" has been producing the Novosibirsk plant of low-voltage equipment. AG "Ob-304" was produced together with the "Ob-303" model to increase the range of items. The loudspeaker is designed to operate in a radio broadcasting network with a voltage of 30 volts (or 15 volts for Moscow). Power input 0.15 W. The range of reproducible sound frequencies is 200 ... 6000 Hz. Average sound pressure in the frequency range 315 ... 4000 Hz is not less than 0.25 Pa. Dimensions of the subscriber loudspeaker 192x192x65 mm. Weight 850 grams.
