
4 0 c m
33cm
actual image size: 25cm x 32cm
Description
BTH 'Rica Kellogg' 12-inch energised moving-coil loudspeaker with integral rectifier unit. This was marketed as an 'American hornles' loudspeaker and was developed by Chester W Rice and Edward W Kellog at the research laboratory of the General Electric Company, for the Radio Corporation of America. It employs a moving coil suspended between the poles of a magnet and a paper cone diaphragm.
Image Details
Image Ref.
10251348
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