Dictogrand (Portable) R-4

Dictograph Products Co. International (General Acoustic; Acousticon; Turner) ; New York

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  • Year
  • 1923
  • Category
  • Loudspeaker, headphone or earphone
  • Radiomuseum.org ID
  • 216413

 Technical Specifications

  • Wave bands
  • - without
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • Horn
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: Dictogrand R-4 - Dictograph Products Co.
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 10 x 13 x 0 inch / 254 x 330 x 0 mm
  • Notes

  • Dictograph Radio Loud Speaker Model Dictogrand Type R-4.
    Unique low profile horn design. Metal horn. Spacing between diaphragm and magnet adjustable with front panel knob (volume control).

    According to "Radio Horn Speaker Encyclopedia", the "portable" model was available in 3 different variants (black, mahogany, rubber). However, the Encyclopedia does not discern between models R-3 and R-4.

  • Literature/Schematics (1)
  • Radio Horn Speaker Encyclopedia, by Floyd A.Paul
  • Literature/Schematics (2)
  • Popular Science, Nov. 1924
  • Author
  • Model page created by Franz Scharner. See "Data change" for further contributors.

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