D-3 1938
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Subscriber loudspeaker "D-3" presumably since 1938 produced the Moscow Engineering Plant. ,8caa42f5a9df53968033bf99609e44f6 The subscriber loudspeaker was named "D-3" by the type of speaker, had high frequency characteristics, 30 ... 7000 Hz and an output power of 0.35 to 0.8 watts. ,8caa42f5a9df53968033bf99609e44f6 Here is how the D-3 subscriber speaker Sergey Nenashev describes. ,8caa42f5a9df53968033bf99609e44f6 The loudspeaker case is rectangular in shape, measuring 310x360x150 mm. ,8caa42f5a9df53968033bf99609e44f6 The design is unusual in that it consists of a box with a removable top cover, through which the installation of the element base was carried out. ,8caa42f5a9df53968033bf99609e44f6 The lower part of the body (bottom) and the upper plate of the cover are made of five-layer plywood, but the main part of the body is of three-layer plywood. ,8caa42f5a9df53968033bf99609e44f6 The body parts are glued together and are covered in black dermatin. ,8caa42f5a9df53968033bf99609e44f6 Inside the box there is a speaker, with a transformer fixed on it and two pairs of petals for mechanical volume switching, depending on the size of the room in which it was installed. ,8caa42f5a9df53968033bf99609e44f6 On the front side of the case - one stylized hole with a radio fabric that protects the speaker. ,8caa42f5a9df53968033bf99609e44f6 Behind - two elongated oval. ,8caa42f5a9df53968033bf99609e44f6 At the bottom of the back of the case there is a nameplate. ,8caa42f5a9df53968033bf99609e44f6 The same nameplate is on the speaker, like the stamp "D-3". ,8caa42f5a9df53968033bf99609e44f6 Judging by the abbreviation of the People"™s Commissariat (NKM USSR), which existed from August 22, 1937 to January 22, 1939, the apparatus was made before the war precisely in these years. ,8caa42f5a9df53968033bf99609e44f6 These data indicate that the copy in the penultimate photo is the version of the D-3 subscriber loudspeaker, manufactured by the Moscow Electrozavod named after ,8caa42f5a9df53968033bf99609e44f6 Kuibyshev, located at the address: Moscow, Elektrozavodskaya ul., D.21, which in different years was under the jurisdiction of various people's commissariats and therefore had different names. ,8caa42f5a9df53968033bf99609e44f6 ,null,ru,null,null,null,null
Information from collection of Valery Khartchenko