• Year
  • 1952
  • Category
  • Loudspeaker, headphone or earphone
  • Radiomuseum.org ID
  • 202935
    • Brand: Isophon

 Technical Specifications

  • Wave bands
  • - without
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Speaker P21/25/10 - Isophon, E. Fritz & Co. GmbH.;
  • Shape
  • Chassis only or for «building in»
  • Dimensions (WHD)
  • 200 x 100 x 0 mm / 7.9 x 3.9 x 0 inch
  • Notes
  • P21/25/10 = ~ 21 cm Korbdurchmesser, 25 mm Kern-Durchmesser, ~ 10'000 Gauss. 

  • Net weight (2.2 lb = 1 kg)
  • 1.4 kg / 3 lb 1.3 oz (3.084 lb)

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