• Country
• Germany

• Manufacturer / Brand
• Opta Radio AG; Wüstenbrand

• Year
• 1943 ?

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 326867

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

• Wave bands
• - without

• Power type and voltage
• Powered by external power supply or a main unit.

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 40 cm = 15.7 inch

• Power out
• 25 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: Groß-Lautsprecher LG 3905 - Opta Radio AG; Wüstenbrand

• Shape
• Chassis only or for «building in»

• Dimensions (WHD)
• 400 x 400 x 240 mm / 15.7 x 15.7 x 9.4 inch

• Notes

• Elektro-dynamisches Großlautsprecher-Chassis mit fremderregtem Feld, für große Übertragungsanlagen geeignet, max. 25 W., 6 Ω Schwingspulen-Impedanz.

  Anpass-Übertrager 400/800/1200/2000 Ω.

• Net weight (2.2 lb = 1 kg)
• 14 kg / 30 lb 13.4 oz (30.837 lb)

• Mentioned in
• -- Original prospect or advert

• Author
• Model page created by Wolfgang Eckardt. See "Data change" for further contributors.

• Other Models

• Here you find 12 models, 5 with images and 2 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Opta Radio AG; Wüstenbrand