• Year
  • 1929/1930
  • Category
  • Loudspeaker, headphone or earphone
  • Radiomuseum.org ID
  • 14837

 Technical Specifications

  • Power type and voltage
  • Other, details in remarks or not known. / DC 4-6; 110; 220 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: Helios Dynamus - Grassmann, Peter, RFW, Radio-
  • Notes
  • 4 Modelle für Wechsel- oder Gleichstrom, ohne (68,- RM) oder mit Holzgehäuse.

    Impedance 2000 Ohms.

  • Price in first year of sale
  • 98.00 RM
  • External source of data
  • E. Erb 3-907007-36-0
  • Mentioned in
  • Rundfunkjahrbuch 1929

 Collections | Museums | Literature

Collections

The model Helios is part of the collections of the following members.

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