• Country
• Germany

• Manufacturer / Brand
• Isophon, E. Fritz & Co. GmbH.; Berlin

• Year
• 1931/1932

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 215687

• • Brand: Isophon

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• Magnetic loudspeaker (reed) of high quality (4 magnet poles).

• Material
• Metal case

• from Radiomuseum.org
• Model: 4-pol-System S 5 - Isophon, E. Fritz & Co. GmbH.;

• Shape
• Chassis only or for «building in»

• Notes

• 4-pol Lautsprechersystem, wird im Chassis C55 verwendet.

• Price in first year of sale
• 17.50 RM

• Mentioned in
• Preisliste 1931 "Johann Lichtenfeld" Hamburg "Elektro-Radio-Fahrrad-Motorrad-Auto"

• Literature/Schematics (1)
• Katalog Radio-Zentrale Prohaska 1931/32 (S.77)

• Author
• Model page created by Alfons Lammers. See "Data change" for further contributors.

• Other Models

• Here you find 253 models, 242 with images and 32 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Isophon, E. Fritz & Co. GmbH.; Berlin