Magnavox Double-Six 66

Benjamin Electric Ltd, The; London

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  • Year
  • 1934
  • Category
  • Loudspeaker, headphone or earphone
  • Radiomuseum.org ID
  • 372135

 Technical Specifications

  • Wave bands
  • - without
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 11 inch = 27.9 cm
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: Magnavox Double-Six 66 - Benjamin Electric Ltd, The;
  • Shape
  • Chassis only or for «building in»
  • Notes

  • The Magnavox "Double-Six" (Model 66) is an energised 11-inch moving-coil loudspeaker introduced in July 1934 by The Benjamin Electric Ltd. at Brantwood Works, Tottenham, London N.17. Developed as a high-fidelity reproducer with a frequency range of 40 to 9,000 cps, it was designed to handle high power outputs (such as push-pull PP5-400 or D.O. 26 valves) while maintaining exceptional sensitivity—requiring as little as 2 watts input. 

    The Model 66 was supplied in three main electrical configurations:

    • D.C. Model "L": Low-voltage field winding for 100–150 V DC operation.
    • D.C. Model "H": High-voltage field winding for 160–260 V DC operation (field resistance options of 700  or 2,000 ).
    • A.C. Model: Operates from A.C. mains supply (any standard frequency); features a self-contained heavy-duty pot housing with an integrated Westinghouse metal rectifier and full LC smoothing filter circuit.

    Pricing & Model Options

    • D.C. Models (Model L or Model H / 700 or 2,000 ohms): £5 17s 6d
    • A.C. Model (with Westinghouse Rectifier & Smoothing): £7 17s 
  • Author
  • Model page created by Gary Cowans. See "Data change" for further contributors.

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