• Year
  • 1927–1930
  • Category
  • Loudspeaker, headphone or earphone
  • Radiomuseum.org ID
  • 14885
    • alternative name: Gravor

 Technical Specifications

  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • Magnetic loudspeaker (reed) of high quality (4 magnet poles). / Ø 30 cm = 11.8 inch
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: Harmonia - Grawor, Rundf.techn.Erz. Grass
  • Dimensions (WHD)
  • 300 x 250 x 180 mm / 11.8 x 9.8 x 7.1 inch
  • Notes
  • Konus-LS, offen, rund
  • Price in first year of sale
  • 21.00 RM
  • External source of data
  • E. Erb 3-907007-36-0

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