• Country
• France

• Manufacturer / Brand
• LEA (L.E.A.), Laboratoire Électro-Acoustique, Kagen et Lubszynski; Rueil, Neuilly

• Year
• 1969/1970

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 161517

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC)

• Loudspeaker
• - - No sound reproduction output.

• Material
• Metal case

• from Radiomuseum.org
• Model: Psophometer E.V.B. 50 and E.V.B. 50P - LEA L.E.A., Laboratoire

• Shape
• Tablemodel, with any shape - general.

• Notes
• 2 phosphometric filters; Sensitivity (instrument at 0dB): -115cdB (model E.V.B.50P) and -95cdB (model E.V.B.50); Input: balanced transformer; Measurement of r.m.s. and peak values

• Author
• Model page created by Museum Roggenhofer. See "Data change" for further contributors.

• Other Models

• Here you find 22 models, 19 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from LEA (L.E.A.), Laboratoire Électro-Acoustique, Kagen et Lubszynski; Rueil, Neuilly