• Country
• United States of America (USA)

• Manufacturer / Brand
• Wurlitzer Co., The Rudolph; North Tonawanda, NY

• Year
• 1937

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 67013

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Tubes
• 7

• Valves / Tubes
• 30 30 45 45 45 45 5Z3

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 115 Volt

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil)

• Material
• Metal case

• from Radiomuseum.org
• Model: 771 - Wurlitzer Co., The Rudolph;

• Shape
• Chassis only or for «building in»

• Notes
• The model 771 is the sound system for the models 316 & 416 & 616 & 716 & 616A from 1937.

• External source of data
• Ernst Erb

• Circuit diagram reference
• Rider's Perpetual, Volume 13 = 1942 and before

• Other Models

• Here you find 235 models, 147 with images and 83 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Wurlitzer Co., The Rudolph; North Tonawanda, NY