• Country
• Germany

• Manufacturer / Brand
• Sennheiser Electronic (Labor W); Wennebostel

• Year
• 1972 ??

• Category
• Service- or Lab Equipment

• Radiomuseum.org ID
• 131367

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

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: Bewertungsfilter FO55 - Sennheiser Electronic Labor W;

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 190 x 130 x 90 mm / 7.5 x 5.1 x 3.5 inch

• Notes
• Gehört zum Röhrenvoltmeter Typ RV 55 von Sennheiser.
  Eingangswiderstand: 600 Ohm. Betriebsdämpfung: 0 dB. Max. Eingangsspannung: 1 Veff.
  Das Bewertungsfilter (Ohrkurvenfilter) FO55 wurde auch von Grundig vertrieben.

• Net weight (2.2 lb = 1 kg)
• 3.2 kg / 7 lb 0.8 oz (7.048 lb)

• Source of data
• - - Data from my own collection

• Author
• Model page created by Jos Lauth. See "Data change" for further contributors.

• Other Models

• Here you find 292 models, 277 with images and 133 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sennheiser Electronic (Labor W); Wennebostel