• Year
  • 1933–1940
  • Category
  • Loudspeaker, headphone or earphone
  • Radiomuseum.org ID
  • 14865

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Tubes
  • 1
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC) / 110; 125; 150; 220 Volt
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 38 cm = 15 inch
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Helios-Dynamos Mammut W - Grassmann, Peter, RFW, Radio-
  • Shape
  • Chassis only or for «building in»
  • Notes
  • Erreger 30W. Eingebauter vielfach unterteilter Anpassungstransformator hoch- und niederohmig.

    Belastbar bis 20 W (ohne Verzerrung laut Anbieter).

  • Net weight (2.2 lb = 1 kg)
  • 16.1 kg / 35 lb 7.4 oz (35.463 lb)
  • Price in first year of sale
  • 250.00 RM
  • External source of data
  • E. Erb 3-907007-36-0
  • Circuit diagram reference
  • Röhren in FS-Bestückungstabellen
  • Literature/Schematics (1)
  • Reyersbach AG, Liste 482, Okt.1933

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