Beyer "Hyper-Bola" Loudspeaker

Made:
1925-1935 in Germany
Beyer "Hyper-Bola" Loudspeaker

Beyer "Hyper-Bola" Loudspeaker
Science Museum Group
© The Board of Trustees of the Science Musuem

Beyer 'Hyper-bola' domestic loudspeaker.

Details

Category:
Radio Communication
Object Number:
Y1975.18
Materials:
copper (metal), metal (unknown) and wood (unidentified)
type:
loudspeaker
credit:
Gift of A.C. Rose-Innes