• Year
  • 1925 ??
  • Category
  • Loudspeaker, headphone or earphone
  • Radiomuseum.org ID
  • 252635

 Technical Specifications

  • Loudspeaker
  • Magnetic loudspeaker (reed) generic. / Ø 7.15 cm = 2.8 inch
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Phono Unit - Dictograph Products Co.
  • Notes
  • Coil resistance 4000 Ohm

    Magnetic distance adjustable to the membrane by pressing a button on the back, scale from 0 to 10
    .

     

  • Author
  • Model page created by Wolfram Zylka. See "Data change" for further contributors.

 Collections | Museums | Literature

Collections

The model Phono Unit is part of the collections of the following members.

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