• Country
• Great Britain (UK)

• Manufacturer / Brand
• British Rola Co. Ltd.; London

• Year
• 1949 ?

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 347266

• 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: Speaker B4MO - British Rola Co. Ltd.; London

• Shape
• Chassis only or for «building in»

• Dimensions (WHD)
• 4 x 4 x 0 inch / 102 x 102 x 0 mm

• Mentioned in
• -- Original prospect or advert

• Author
• Model page created by Sándor Selyem-Tóth. See "Data change" for further contributors.

• Other Models

• Here you find 6 models, 6 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from British Rola Co. Ltd.; London