Magnetic System - 4-pol Magnetsystem Antriebsystem

Grawor, Rundf.techn.Erz. Grass & Worff (REG); Berlin

  • Year
  • 1929 ?
  • Category
  • Loudspeaker, headphone or earphone
  • Radiomuseum.org ID
  • 336528
    • alternative name: Gravor

 Technical Specifications

  • Wave bands
  • - without
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • Magnetic loudspeaker (reed) of high quality (4 magnet poles).
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Magnetic System - 4-pol Magnetsystem Antriebsystem - Grawor, Rundf.techn.Erz. Grass
  • Shape
  • Chassis only or for «building in»
  • Notes
  • Grawor 4-pol magnetisches Antriebsystem, zur Kombination mit einem Papierkonus.


    This is the magnet-audio coil complex to be applied to a cone designed to compose a magnetodynamic speaker.

  • Mentioned in
  • -- Original prospect or advert (La Radio per Tutti, Italy, Sonzogno editor, 1 November 1929)
  • Author
  • Model page created by Pier Antonio Aluffi. See "Data change" for further contributors.

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