BTH 'Rica Kellogg' loudspeaker, c 1929.

BTH 'Rica Kellogg' loudspeaker, c 1929.
3 3 c m
40cm
actual image size: 32cm x 25cm

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.
 
10318357

© Science Museum / Science & Society Picture Library

buy a print

Select size
 
Select finish
 
How many prints?
 
£20.00
 

buy a framed print

buy a canvas

buy a framed canvas