• Country
• United States of America (USA)

• Manufacturer / Brand
• Masco Mark Simpson Company Inc., Long Island

• Year
• 1947

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 165331

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

• Number of Tubes
• 7

• Valves / Tubes
• 7B4 7B4 7H7 7F7 6L6GA 6L6GA 5U4G

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Details
• Record Player (perh.Changer)

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

• Loudspeaker
• - This model requires external speaker(s).

• Material
• Metal case

• from Radiomuseum.org
• Model: MC-25P - Masco Mark Simpson Company Inc

• Shape
• Chassis only or for «building in»

• Notes
• 3 channel PA amplifier. It operates on battery where A.C. current is not available. And operates on 115 volt A.C. 60 cycles.

• Mentioned in
• Radio Retailing (Radio & Television R.) (April 1947 page 134.)

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS

• Author
• Model page created by Gottfried Silberhorn. See "Data change" for further contributors.

• Other Models

• Here you find 136 models, 104 with images and 107 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Masco Mark Simpson Company Inc., Long Island