Subscriber loudspeaker "Nocturne-317".
Subscriber loudspeakers.DomesticSince 1989, the subscriber loudspeaker "Nocturne-317" has been produced by the Leningrad association Plastpribor. '' Nocturne-317 '' is designed to reproduce the programs of the LF channel of the wire broadcasting network. AG is made of impact-resistant polystyrene. The side walls of the case are wooden, polished. The AG uses a dynamic head 0.5GD-42M with a diameter of 125 mm. Transformer type TAG-P1. Resistor SPZ-ZOa-0.5-33 kOhm is used to adjust the volume, its handle is brought to the front panel. Nominal input voltage 30 V (15). Effective operating frequency range 160 ... 10000 Hz. Average sound pressure at rated voltage in the frequency range 315 ... 4000 Hz is 0.25 Pa. The dimensions of the device are 254x69x150 mm. Weight 0.9 kg. Volume control range 35 dB.
