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The subscriber loudspeaker "Oktava" has probably been produced by the Novosibirsk plant of low-voltage equipment since 1953. ,86e6f450b8cc469628ba70bf2947b049"Octave" (0.25-GD-III-4) is a standard 30-volt subscriber loudspeaker of the 3rd class without any peculiarities. ,86e6f450b8cc469628ba70bf2947b049The operating frequency range is 150 ... 5000 Hz. ,86e6f450b8cc469628ba70bf2947b049The subscriber loudspeaker was produced mainly in white (initial release) black (later) and yellow (least of all) colors.,86e6f450b8cc469628ba70bf2947b049,null,ru,null,null,null,null