• Country
• Australia

• Manufacturer / Brand
• Rola Company (AUS) Pty. Ltd.; Melbourne

• Year
• 1963 ??

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 319637

• Wave bands
• - without

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 4 inch = 10.2 cm

• Material
• Various materials

• from Radiomuseum.org
• Model: Rola 4CQ [15 Ω Voice Coil Impedance] - Rola Company AUS Pty. Ltd.;

• Notes

• Peak Power Capacity Watts	3.5
  Frequency Range c.p.s. (Hz)	130 - 7,000
  Voice Coil Impedance at 400 c.p.s. (Hz)	15 ohms
  Gap Flux Density Gausses	7,700
  Gap Flux Lines	14,500
  Voice Coil Diameter Inches	⅝
  Overall Size of Housing Inches	4⅛ x 4⅛
  Front to Back Depth Inches	1 11/16
  Transformer Type	E or G

• Mentioned in
• - - Manufacturers Literature (Rola Loudspeaker Data.)

• Author
• Model page created by Martin Kent. See "Data change" for further contributors.

• Other Models

• Here you find 194 models, 68 with images and 1 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Rola Company (AUS) Pty. Ltd.; Melbourne