Plessey Alnico 9-6H (9-6H00) 27 Ω Voice Coil Impedance

Plessey Rola/Plessey Australia Pty. Limited; Villawood, NSW

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  • Year
  • 1971
  • Category
  • Loudspeaker, headphone or earphone
  • Radiomuseum.org ID
  • 319506

 Technical Specifications

  • Wave bands
  • - without
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) - elliptical
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: Plessey Alnico 9-6H [27 Ω Voice Coil Impedance] - Plessey Rola/Plessey Australia
  • Notes

  • 9" x 6" elliptical loudspeaker.

    Power handling capacity 6 watts peak.
    Diaphragm Fundamental resonance: 90 Hz.
    Frequency response 85 Hz - 6 kHz.
    Voice coil impedance 27 ohms.
    Air gap flux density 0.82 tesla.
    Total gap flux 200 μ weber.
    Transformer Type Q or D for equipment deriving power from mains or vibrators.
    Principle dimensions Overall diameter of diaphragm housing: 9 7/32" x 6 11/32"
    Size of baffle opening: 8 ¾" x 5 ⅞"
    Diameter of voice coil: ¾"
    Depth from pad ring to rear: 3 5/16"
    Mounting Four slots spaced 4 ⅝" apart on a 4" pitch circle diameter. Dimensions of slots 11/32" x 7/32"
    Finish Baked enamel diaphragm housing, magnet shell
    black lacquered.
    Weight (without transformer) 1 lb 1½ ozs.

    Previously branded Rola.

  • Literature/Schematics (1)
  • - - Manufacturers Literature (Plessey Rola Loudspeaker Data, PR101, August 1972.)
  • Author
  • Model page created by Martin Kent. See "Data change" for further contributors.

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