Multi-Pattern Microphone 639B

Altec Lansing Corp.; Oklahoma City (OK)

  • Year
  • 1947 ?
  • Category
  • Microphone or Pick-up element
  • Radiomuseum.org ID
  • 134224

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Wave bands
  • - without
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Multi-Pattern Microphone 639B - Altec Lansing Corp.; Oklahoma
  • Dimensions (WHD)
  • 7.5 x 4.5 x 3.5 inch / 191 x 114 x 89 mm
  • Notes
  • Altec Lansing 639B
    Multipattern Microphone with 6 switch-selectable directional characteristics, by incorporating both a dynamic and a ribbon element. First produced by Western Electric in 1939.
  • Net weight (2.2 lb = 1 kg)
  • 1.5 kg / 3 lb 4.9 oz (3.304 lb)
  • Source of data
  • -- Collector info (Sammler)
  • Mentioned in
  • -- Original-techn. papers.

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