• Country
• Germany

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

• Year
• 1994

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 161313

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

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Main principle
• none

• Wave bands
• - without

• Loudspeaker
• - Is a Headphone or Earphone

• Material
• Various materials

• from Radiomuseum.org
• Model: Infrarot-Kopfhörer IS450 HDI450 - Sennheiser Electronic Labor W;

• Shape
• Miscellaneous shapes - described under notes.

• Notes
• Infrarot-Kophörer HDI450,Stereo-Kopfhörer, Modulationsferfahren FM, Trägerfrequenz 95 / 250 kHz, Übertragungsbereich 20 Hz - 22.000 Hz, in Verbindung mit Infrarot-Sender S 180.

• Net weight (2.2 lb = 1 kg)
• 0.160 kg / 0 lb 5.6 oz (0.352 lb)

• Source of data
• -- Original prospect or advert

• Author
• Model page created by Karlheinz Fischer. See "Data change" for further contributors.

• Other Models

• Here you find 295 models, 280 with images and 135 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sennheiser Electronic (Labor W); Wennebostel