Subscriber loudspeaker `` Ob ''.
Subscriber loudspeakers.DomesticSince the 1st quarter of 1970, the subscriber loudspeaker "Ob" has been producing the Novosibirsk plant of low-voltage equipment. The subscriber loudspeaker "Ob" is designed to operate in a radio broadcasting network with a voltage of 30 or 15 volts. Specifications: Power input 0.15 W. The range of reproducible frequencies is 160 ... 5000 Hz. Average sound pressure 0.25 Pa. Dimensions AG 241x144x88 mm. Weight 850 gr. The price is 5 rubles.
