• Country
• Australia

• Manufacturer / Brand
• Plessey Rola/Plessey Australia Pty. Limited; Villawood, NSW

• Year
• 1971–1974

• Category
• Loudspeaker, headphone or earphone

• Radiomuseum.org ID
• 315948

• Wave bands
• - without

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 6 inch = 15.2 cm

• Material
• Various materials

• from Radiomuseum.org
• Model: Plessey 6H [3½ Ω Voice Coil Impedance.] - Plessey Rola/Plessey Australia

• Notes

• 6" loudspeaker.

  Power handling capacity	4 watts (6 watts peak).
  Diaphragm	Fundamental resonance: 115 Hz
  Frequency response	110 Hz - kHz
  Voice coil impedance	3.5 ohms at 400 Hz
  Air gap flux density	0.82 tesla
  Gap flux	200 µ weber
  Dimensions	Overall diameter of diaphragm housing: 6 9/16" Size of baffle opening: 5½" Diameter of voice coil: ¾" Depth from pad ring to rear: 2¼"
  Mounting	Four slots spaced 90º apart on a 6 3/16 pitch circle diameter. Dimensions of slots 9/32" x 13/64"

  Plessey branded Rola 6H.

• Literature/Schematics (1)
• - - Manufacturers Literature (Plessey Rola Loudspeaker Data, August 1972.)

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

• Other Models

• Here you find 24 models, 17 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Plessey Rola/Plessey Australia Pty. Limited; Villawood, NSW