Broadcast loudspeaker '' GR-9 ''.
Acoustic systems, passive or active, as well as electro-acoustic units, hearing aids, electric megaphones, intercoms ...Broadcast loudspeakersThe broadcast loudspeaker "GR-9" was produced presumably since 1958 by the Murom radio plant. The TG was intended mainly for sea and river vessels. The loudspeaker could be connected to a two- or three-wire line and had a pre-switchable power from 0.1 to 2 W.
