Masterpiece II (2) Variant 3

McMurdo Silver, Inc.(pre WW2); Chicago

Data
Forum
Pictures
Collections

  • Year
  • 1934
  • Category
  • Broadcast Receiver - or past WW2 Tuner
  • Radiomuseum.org ID
  • 288308

 Technical Specifications

  • Number of Tubes
  • 12
  • Main principle
  • Superhet with RF-stage
  • Wave bands
  • Broadcast plus more than 2 Short Wave bands.
  • Power type and voltage
  • Alternating Current supply (AC)
  • Loudspeaker
  • Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
  • Power out
  • 17 W (undistorted)
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Masterpiece II [Variant 3] - McMurdo Silver, Inc.pre WW2;
  • Shape
  • Chassis only or for «building in»
  • Notes

  • 4 bands.  3 intermediate freqency amplifier stages.  Schematic dated March 4, 1934.

    The third variant of the Masterpiece II uses the same tube lineup as the 2nd variant.  The audio driver circuit with the 53-tube has been modified, and is now wired as a single triode (only one half of the tube is used).  This receiver is referred to in The Silver Times, Vol. 2 No. 6, July, 1934, as "The 1935 Masterpiece II."  The amplifier is the same "short amp" with one choke as used with Variant 2.  All three variants have been found in the field.

    Dimensions and weight are listed as follows:  Tuner 19"W x 8.5"H x 10.5"D.  Power amplifier 13.25"W x 7"H x 5"D.  Giant Speaker 13.75"W x 13.75"H x 8"D.  Ortho-dynamic speaker 12"W x 12"H x 7"D.  Weight packed export, 158 lbs.

  • Mentioned in
  • - - Manufacturers Literature (The Silver Times Vol. 2, No. 6, July 1934)
  • Author
  • Model page created by Rodney Boleyn. See "Data change" for further contributors.

 Collections | Museums | Literature

 Forum