• Country
• Germany

• Manufacturer / Brand
• Hegra, Hekra, (Marke), Hermann Grau, Berlin-Friedrichshagen - Vorkrieg

• Year
• 1931/1932

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 156282

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Dynamischer Lautsprecher B9/A9 [Gehäuselautspr.] - Hegra, Hekra, Marke, Hermann

• Shape
• Tablemodel, low profile (big size).

• Dimensions (WHD)
• 455 x 375 x 205 mm / 17.9 x 14.8 x 8.1 inch

• Notes
• In einem äußerst geschmackvollen Gehäuse, Vorderfront Nussbaum poliert. Verwendet das Chassis A9. Gleiches Gehäuse wie für B7 und B8.

• Price in first year of sale
• 83.00 RM

• Literature/Schematics (1)
• Katalog Radio-Zentrale Prohaska 1928 (1931/32, Nr.503c)

• Author
• Model page created by Konrad Birkner † 12.08.2014. See "Data change" for further contributors.

• Other Models

• Here you find 117 models, 99 with images and 4 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Hegra, Hekra, (Marke), Hermann Grau, Berlin-Friedrichshagen - Vorkrieg