• Year
  • 1936–1938
  • Category
  • Loudspeaker, headphone or earphone
  • Radiomuseum.org ID
  • 247077

 Technical Specifications

  • Wave bands
  • - without
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 11.4 cm = 4.5 inch
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Speaker Ultra 20 - Tonalit Gramophon Rt.;
  • Shape
  • Chassis only or for «building in»
  • Dimensions (WHD)
  • 114 x 114 x 0 mm / 4.5 x 4.5 x 0 inch
  • Notes
  • 1 W, transformer 7000 and 10000 Ohm. DC resistance 250 Ohm.

  • Price in first year of sale
  • 20.00 Pengő
  • Literature/Schematics (2)
  • Barta és Társa Katalógus, BP. 1938

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