• Year
  • 1948 ?
  • Category
  • Loudspeaker, headphone or earphone
  • Radiomuseum.org ID
  • 265389

 Technical Specifications

  • Wave bands
  • - without
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 12.344 inch = 31.4 cm
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: 728B - Western Electric Company Inc.;
  • Dimensions (WHD)
  • 12.344 x 12.344 x 3.78125 inch / 314 x 314 x 96 mm
  • Notes
  • Western Electric direct radiator Model 728B.
    Frequency Range 60 - 10000Hz, 30 Watts
    Coverage angle 50 degrees
    Requires 3 cubic feet of enclosure space.

  • Mentioned in
  • Audio Engineering October 1948 - Page 12
  • Author
  • Model page created by Franz Scharner. See "Data change" for further contributors.

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