• Country
• Germany

• Manufacturer / Brand
• Opta Radio AG; Wüstenbrand

• Year
• 1943 ??

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 326866

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

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 220 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• Material
• Wooden case

• from Radiomuseum.org
• Model: Drahtfunk-Lautsprecher LD 3913 - Opta Radio AG; Wüstenbrand

• Dimensions (WHD)
• 380 x 320 x 200 mm / 15 x 12.6 x 7.9 inch

• Notes

• Dynamischer Lautsprecher im polierten Holzgehäuse für Aufstellung in Innenräumen.

  Drahtfunk-Anschluss, 10 kΩ Anpassimpedanz, mit eingebautem Lautstärkeregler.

• Net weight (2.2 lb = 1 kg)
• 5 kg / 11 lb 0.2 oz (11.013 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