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Dictogrand (Portable) R-3

Dictogrand R-3; Dictograph Products (ID = 248220) Speaker-P Dictogrand R-3; Dictograph Products (ID = 353251) Speaker-P
Dictogrand R-3; Dictograph Products (ID = 248221) Speaker-P Dictogrand R-3; Dictograph Products (ID = 248222) Speaker-P
Dictogrand R-3; Dictograph Products (ID = 1242167) Speaker-P Dictogrand R-3; Dictograph Products (ID = 1242168) Speaker-P
Dictogrand R-3; Dictograph Products (ID = 1242169) Speaker-P Dictogrand R-3; Dictograph Products (ID = 1242170) Speaker-P
Dictogrand R-3; Dictograph Products (ID = 1253656) Speaker-P Dictogrand R-3; Dictograph Products (ID = 1371332) Speaker-P
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Dictogrand R-3; Dictograph Products (ID = 248220) Speaker-P
Dictograph Products: Dictogrand R-3 [Speaker-P] ID = 248220 560x700
Select picture or schematic to display from thumbnails on the right and click for download.
For model Dictogrand (Portable) R-3, Dictograph Products Co. International (General Acoustic; Acousticon; Turner) ; New York:
Horn repainted.
 
Country:  United States of America (USA)
Manufacturer / Brand:  Dictograph Products Co. International (General Acoustic; Acousticon; Turner) ; New York
Year: 1923 Category: Loudspeaker, headphone or earphone
Wave bands - without
Details
Power type and voltage No Power needed
Loudspeaker Horn
Power out
from Radiomuseum.org Model: Dictogrand R-3 - Dictograph Products Co.
Material Various materials
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 $
Collectors' prices  
Literature/Schematics (1) Radio Horn Speaker Encyclopedia, by Floyd A.Paul
Literature/Schematics (2) Popular Science, Nov. 1924

Model page created by Thomas Albrecht. See "Data change" for further contributors.



All listed radios etc. from Dictograph Products Co. International (General Acoustic; Acousticon; Turner) ; New York
Here you find 28 models, 26 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.




  
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