Velocity Microphone PB-90 MI-4000

RCA (RCA Victor Co. Inc.); New York (NY)

  • Year
  • 1935 ??
  • Category
  • Microphone or Pick-up element
  • Radiomuseum.org ID
  • 130238
    • alternative name: RCA Manufacturing || Victor Talking Machine

 Technical Specifications

  • Wave bands
  • - without
  • Power type and voltage
  • No Power needed
  • Loudspeaker
  • - For headphones or amp.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Velocity Microphone PB-90 MI-4000 - RCA RCA Victor Co. Inc.; New
  • Shape
  • Miscellaneous shapes - described under notes.
  • Dimensions (WHD)
  • 3.5 x 8.5 x 3.5 inch / 89 x 216 x 89 mm
  • Notes
  • RCA Velocity Microphone Ribbon type PB-90, master index number MI-4000 with or without an additional suffix like AF, also type PB-90AI without a master index number known, built-in match transformer for 250 & 50 ohms, 30 - 6.000 Hz, Dull gunmetal finish.
  • Price in first year of sale
  • 78.00 $
  • Source of data
  • -- Collector info (Sammler)
  • Author
  • Model page created by a member from A. See "Data change" for further contributors.

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