• Country
• Great Britain (UK)

• Manufacturer / Brand
• Amplion (Brand), Alfred Graham & Co., Graham Amplion Ltd., Amplion (1932) Ltd.; London

• Year
• 1926/1927 ?

• Category
• Radio part (not a module) 

• Radiomuseum.org ID
• 309324

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Material
• Bakelite or Plastics (type unknown)

• from Radiomuseum.org
• Model: Speaker Driver AU4X - Amplion Brand, Alfred Graham &

• Shape
• Chassis only or for «building in»

• Dimensions (WHD)
• 76 x 78 x 88 mm / 3 x 3.1 x 3.5 inch

• Notes

• The driver from an Amplion AU4X horn speaker.

• Net weight (2.2 lb = 1 kg)
• 0.4 kg / 0 lb 14.1 oz (0.881 lb)

• Mentioned in
• BVWS auction 24 Sep 2017

• Author
• Model page created by Manfred Rathgeb. See "Data change" for further contributors.

• Other Models

• Here you find 100 models, 78 with images and 9 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Amplion (Brand), Alfred Graham & Co., Graham Amplion Ltd., Amplion (1932) Ltd.; London