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Amplion loudspeaker with wooden horn, 1925.

 
Amplion loudspeaker with wooden horn, 1925.
4 0 c m
 
29cm
actual image size: 21cm x 32cm

Description

Before modern moving-coil loudspeakers, most people listened to the radio on headphones. A speaker, if you had one, would probably have fixed coils driving an iron reed attached to a small diaphragm.

Image Details

Image Ref.
 
10305615

© Science Museum / Science & Society Picture Library

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