• Country
• Germany

• Manufacturer / Brand
• Gruwela; wo?

• Year
• 1929

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 295486

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• Magnetic loudspeaker (reed) generic.

• Material
• Metal case

• from Radiomuseum.org
• Model: Selectus - Gruwela; wo?

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 400 x 440 x 170 mm / 15.7 x 17.3 x 6.7 inch

• Notes

• Magnetischer Konzert-Lautsprecher mit Kunststoffmembrane, für Selectus 4.

• Mentioned in
• Radiokatalog Erb, Band 2, 1. Auflage, p.80

• Literature/Schematics (1)
• -- Original prospect or advert (La Liberté (Fribourg), 23.11.1929)

• Other Models

• Here you find 2 models, 2 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Gruwela; wo?