• Year
  • 1937/1938
  • Category
  • Loudspeaker, headphone or earphone
  • Radiomuseum.org ID
  • 247084

 Technical Specifications

  • Wave bands
  • - without
  • Power type and voltage
  • Powered by external power supply or a main unit.
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 16.5 cm = 6.5 inch
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Speaker BT 666 - Tonalit Gramophon Rt.;
  • Shape
  • Chassis only or for «building in»
  • Dimensions (WHD)
  • 165 x 165 x 0 mm / 6.5 x 6.5 x 0 inch
  • Notes
  • 3 W, Transformer impedance: 4500 and 7000 Ohm. DC resistance : 330 and 460 Ohm.

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

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