TranscriptionTurntable 12D/3

Commonwealth Electronics Pty. Ltd.; Hobart, TAS

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  • Year
  • 1959
  • Category
  • Sound/Video Recorder and/or Player
  • Radiomuseum.org ID
  • 307545

 Technical Specifications

  • Number of Transistors
  • 2
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC) / 240 Volt
  • Loudspeaker
  • - - No sound reproduction output.
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: TranscriptionTurntable 12D/3 - Commonwealth Electronics Pty.
  • Shape
  • Chassis only or for «building in»
  • Notes

  • The Commonwealth Electronics 12D was the most popular turntable the company produced.

    It was the last model the company produced and following the takeover by Philips the 12D stayed in production till the 1970's. Two versions were available, the three speed 12D/3 and four speed 12D/4. On both models the idler wheel between the motor and the inside edge of the platter uses a solenoid to engage the idler wheel while the power is on. Therefor a flat should not develop if the speed is changed while the power is off.

    SPECIFICATION 12D/3:
    Turntable diameter:       12in
    Turntable weight:           6.5 lbs
    Motor:                            4 pole, synchronous
    Speeds:                         33.33, 45.11, 77.93 RPM
    Speed tolerance:           0% to +0.25%
    Wow and flutter:             Less than 0.1% RMS total @ 33 RPM
    Rumble:                         Better than -50db below recorded level of 7cm/sec at 1 kHz
    Acceleration:                 1/2 rev @ 33.33 & 45 RPM, 3/4 rev @ 78 RPM

  • Mentioned in
  • - - Manufacturers Literature (Instructions Manual, Types 12D/3, 12D/4.)
  • Author
  • Model page created by Gary Cowans. See "Data change" for further contributors.

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