• Country
• United States of America (USA)

• Manufacturer / Brand
• Rola Company, The; Oakland, CA

• Year
• 1929/1930

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 165709

• Wave bands
• - without

• Power type and voltage
• No Power needed

• Loudspeaker
• Magnetic loudspeaker (reed) generic. / Ø 9.75 inch = 24.8 cm

• Material
• Wooden case

• from Radiomuseum.org
• Model: Rola model 20 - Rola Company, The; Oakland, CA

• Shape
• Table-Cathedral-Type (upright, round top or gothic arch, not rounded edges only).

• Dimensions (WHD)
• 12.5 x 11.5 x 7 inch / 318 x 292 x 178 mm

• Notes
• See also model M which is the complete electromagnetic armature unit as installed in the Rola models 15 and 20. It has the Rola full-floating diaphragm, magnetic-armature cone unit with low-pass filter and tinsel connecting cord.

• Price in first year of sale
• 30.00 $

• Literature/Schematics (1)
• Lafayette Radio Catalog (Lafayette Catalog 1930 for season 1929/30, page 36-38.)

• Author
• Model page created by Ernst Erb. See "Data change" for further contributors.

• Other Models

• Here you find 12 models, 11 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Rola Company, The; Oakland, CA