• Country
• Germany

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

• Year
• 1969–1973

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 126105

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

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• - Is a Headphone or Earphone

• Material
• Plastics (no bakelite or catalin)

• from Radiomuseum.org
• Model: HD412 - Sennheiser Electronic Labor W;

• Notes
• Dynamischer Stielhörer für Phonobars zum Abhören von Mono- und Stereo-Schalplatten mit dem gleichen System wie der HD414. Impedanz: etwa 2 kOhm, Übertragungsbereich 20-2000 Hz am Ohr.

• Price in first year of sale
• 78.00 DM

• Source of data
• Handbuch VDRG 1969/1970

• Author
• Model page created by Bernd P. Kieck. See "Data change" for further contributors.

• Other Models

• Here you find 294 models, 278 with images and 134 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sennheiser Electronic (Labor W); Wennebostel