• Country
• Germany

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

• Year
• 1966

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 223171

• • Brand: Isophon

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 30 cm = 11.8 inch

• Material
• Metal case

• from Radiomuseum.org
• Model: Rund-Lautsprecher PT30/31A - Isophon, E. Fritz & Co. GmbH.;

• Shape
• Chassis only or for «building in»

• Dimensions (WHD)
• 300 x 130 x 300 mm / 11.8 x 5.1 x 11.8 inch

• Notes
• Lautsprecherchassis, 4,5 Ω, 9 W (16 W_Spitze).
  Frequenzbereich: 30-6000 Hz, Resonanz: 45 Hz,
  10000 Gauss / 60600 Maxwell.

• Price in first year of sale
• 56.00 DM

• Literature/Schematics (1)
• Rimpex-Katalog, 1966

• Author
• Model page created by a member from D. See "Data change" for further contributors.

• Other Models

• Here you find 259 models, 248 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