Dictogrand (Portable) R-3

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

Data
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  • Year
  • 1923
  • Category
  • Loudspeaker, headphone or earphone
  • Radiomuseum.org ID
  • 104487

 Technical Specifications

  • Wave bands
  • - without
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • Horn
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: Dictogrand R-3 - Dictograph Products Co.
  • Shape
  • Miscellaneous shapes - described under notes.
  • Dimensions (WHD)
  • 10.75 x 12.5 x 10.25 inch / 273 x 318 x 260 mm
  • Notes

  • 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.

    Model R3 doesnt have adjustable volume contrarly to model R4.

    See https://www.radiomuseum.org/dsp_picture.cfm?Image_Id=1704812&model_id=229222&imgtyp=2

    In https://www.radiomuseum.org/r/dictograph_dictograph_radio_loud_speaker.html you can see both models.

  • Net weight (2.2 lb = 1 kg)
  • 4 kg / 8 lb 13 oz (8.811 lb)
  • Price in first year of sale
  • 29.00 $
  • Literature/Schematics (1)
  • Radio Horn Speaker Encyclopedia, by Floyd A.Paul
  • Literature/Schematics (2)
  • Popular Science, Nov. 1924
  • Author
  • Model page created by Thomas Albrecht. See "Data change" for further contributors.

 Collections | Museums | Literature

Collections

The model Dictogrand (Portable) is part of the collections of the following members.

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