• Year
  • 1925
  • Category
  • Loudspeaker, headphone or earphone
  • Radiomuseum.org ID
  • 308461

 Technical Specifications

  • Wave bands
  • - without
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • Magnetic loudspeaker (reed) generic.
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Invisible Speaker - Curtis-Leger Fixture Co. CLF
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 0 x 3 x 0 inch / 0 x 76 x 0 mm
  • Notes
  • Speaker contained in a wooden cabinet no more than 3" high, to be placed on top of or used as a base for any set. It was made in different sizes to be adaptable to all standard sets.

    In Talking Machine, the height is specified with "no more than 3.5".

  • Mentioned in
  • Radio Industry, Vol II No. 4, April 1925, p.20
  • Literature/Schematics (1)
  • The Talking Machine World, September 15, 1925

 Collections | Museums | Literature

Museums

The model Invisible Speaker can be seen in the following museums.

 Forum