Subscriber loudspeaker "FPK".
Subscriber loudspeakers.DomesticThe subscriber loudspeaker "FPK" presumably since 1952 has been produced by the Minsk Plywood Industrial Plant (not sure). "FPK" standard 30-volt subscriber loudspeaker, no peculiarities. Power input 0.15 W. The range of reproducible sound frequencies is 150 ... 6000 Hz.
