Dynamic microphone `` MD-2 ''.Microphones.MicrophonesThe dynamic microphone "MD-2" from 1947 was presumably produced by the Leningrad Radio Izdeliy Plant. A dynamic microphone of the "MD-2" type is designed to amplify speech in places of mass presence of people, such as train stations, stadiums, in various types of transport, in production for announcements. The microphone could also be used as a monitoring loudspeaker. Output impedance 1000 Ohm. Operating frequency range 200 ... 5000 Hz. The average output voltage of the microphone is 0.1 ... 0.3 V. The housing of the MD-2 microphone is practically similar to the housing of the subscriber loudspeaker Malysh, produced in 1939.