Dating victrola records

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Are you thinking of starting a phonograph collection?Did you just find one at a shop, online, or in your garage, and are trying to make sense of what it is?The older 78 format continued to be mass produced alongside the newer formats into the 1950s, but had faded from the scene by 1955.Recording techniques Before 1925, all 78s were recorded by means of the artist singing or speaking into a horn, the power of their voice directly vibrating the recording stylus and thus cutting the wax of the master disc. The acoustical era: 1877–1925 The earliest methods of sound recording are described as "acoustical" and employ only mechanical means for both recording and playback.

In 1925, 78.26 rpm was chosen as a standard for motorized phonographs, because it was suitable for most existing records, and was easily achieved using a standard 3600-rpm motor and 46-tooth gear (78.26 = 3600/46).

Thus these records became known as 78s (or "seventy-eights").

This term did not come into use until after World War II when a need developed to distinguish the 78 from other newer disc record formats.

After about 1925, 78s were recorded by the artist singing or speaking into a microphone and amplifier which then cut the master record.

This allowed a wider range of sound to be recorded.

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