• Year
  • 1929 ?
  • Category
  • Loudspeaker, headphone or earphone
  • Radiomuseum.org ID
  • 253222
    • alternative name: American Bosch Magneto
    • Brand: Essex

 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)
  • Material
  • Wooden case
  • from Radiomuseum.org
  • Model: Cathedral Table Model [electrodynamic] - United American Bosch Magneto
  • Shape
  • Table-Cathedral-Type (upright, round top or gothic arch, not rounded edges only).
  • Notes
  • Similar to speaker 612, but with electrodynamic system. Impedance ca. 10 Ohms, coil resistance 2000 Ohms.

  • Mentioned in
  • Bosch/Mustel Catalog, ca. 1930
  • Author
  • Model page created by Manfred Rathgeb. See "Data change" for further contributors.

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