• Year
  • 1924
  • Category
  • Loudspeaker, headphone or earphone
  • Radiomuseum.org ID
  • 120218

 Technical Specifications

  • Wave bands
  • - without
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • Horn / Ø 11 inch = 27.9 cm
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: M4 A - Magnavox Co., Commercial
  • Shape
  • Tablemodel, with any shape - general.
  • Dimensions (WHD)
  • 11 x 18.5 x 0 inch / 279 x 470 x 0 mm
  • Notes
  • Magnetic horn speaker (4- pole system) Curved neck (tin) while the horn bell is made of brass. Crystalline finish. Input impedance 1400 Ohms
  • Net weight (2.2 lb = 1 kg)
  • 1.8 kg / 3 lb 15.4 oz (3.965 lb)
  • Price in first year of sale
  • 25.00 USD
  • Literature/Schematics (1)
  • Radio Horn Speaker Encyclopedia, by Floyd A.Paul
  • Literature/Schematics (2)
  • Radio Broadcast, Jun. 1924, p. 173

 Collections | Museums | Literature

Collections

The model M4 is part of the collections of the following members.

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