• Country
• United States of America (USA)

• Manufacturer / Brand
• Operadio Corp.; St. Charles (IL)

• Year
• 1940 ?

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 171510

• • alternative name: Operadio Mfg,

• Wave bands
• - without

• Loudspeaker
• Permanent or electro-dynamic (moving coil), system not known yet.

• Material
• Wooden case

• from Radiomuseum.org
• Model: Acoustic-Reflex Speaker Console - Operadio Corp.; St. Charles IL

• Shape
• Console with any shape - in general

• Notes
• Speaker Console.

• Source of data
• Pre-War Consoles

• Author
• Model page created by Hans-Joachim Korn † 16.11.15. See "Data change" for further contributors.

• Other Models

• Here you find 66 models, 43 with images and 32 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Operadio Corp.; St. Charles (IL)