Voigt condenser microphone, 1920-1940

Made:
1920-1940 in Sydenham

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Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Science Museum Group Collection
© The Board of Trustees of the Science Museum

Voigt condenser microphone. Note that this image has been retouched for creative purposes and some elements might have
Science Museum Group Collection
© The Board of Trustees of the Science Museum

Voigt condenser microphone. Note that this image has been retouched for creative purposes and some elements might have
Science Museum Group Collection
© The Board of Trustees of the Science Museum

Voigt condenser microphone, probably made by Voigt Patents Limited, Sydenham, London, England, 1920-1940.

This type of condenser microphone was known as a 'slack diaphragm' microphone. An oval central pillar with a condensing surface was covered in a thin film of insulating material, followed by an extremely thin (only one thousandth of an inch thick) sheet of metal. It was used for a period by the BBC, but was not as sensitive as other types of microphone. There was also a need to keep this type of microphone very dry which, in combination with the poor sensitivity of the device, meant the slack diaphragm microphone was less popular than other types.

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Science Museum: Information Age Gallery: Broadcast

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Details

Category:
Radio Communication
Object Number:
1960-132
Materials:
brass (copper, zinc alloy), foam, metal
type:
microphone
taxonomy:
  • furnishing and equipment
  • tools & equipment
  • audio equipment
credit:
Donated by the British Broadcasting Corporation
status:
Permanent collection

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