• Country
• Germany

• Manufacturer / Brand
• Beyer; Berlin, später Beyerdynamic; Heilbronn

• Year
• 1950 ??

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 123202

• Wave bands
• - without

• Power type and voltage
• No Power needed

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

• Material
• Metal case

• from Radiomuseum.org
• Model: Druckkammersystem DKS25 - Beyer; Berlin, später

• Dimensions (WHD)
• 120 x 120 x 120 mm / 4.7 x 4.7 x 4.7 inch

• Notes
• Druckkammer-System für Horn EH1 oder EH2. Frequenzbereich: 200-8000 Hz; Belastbarkeit: 25 Watt; Widerstand: 15 Ohm; Wirkungsgrad gegenüber Konuslautsprecher: ca. 7- fach; Reichweite im Freien: ca. 1200 m.

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

• Price in first year of sale
• 280.00 DM

• Mentioned in
• -- Original prospect or advert

• Author
• Model page created by Karlheinz Fischer. See "Data change" for further contributors.

• Other Models

• Here you find 149 models, 140 with images and 55 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Beyer; Berlin, später Beyerdynamic; Heilbronn