• Country
• United States of America (USA)

• Manufacturer / Brand
• Sylvania (Hygrade, GTE, Nilco); Emporium (PA)

• Year
• 1959

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 72262

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

• Number of Tubes
• 3

• Valves / Tubes
• 12AX7 50EH5 50EH5

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Details
• Changer (Record changer)

• Power type and voltage
• Alternating Current supply (AC) / 110 - 120 Volt

• Loudspeaker
• 2 Loudspeakers

• Material
• Wooden case

• from Radiomuseum.org
• Model: 4312 Ch= 1-639-1 - Sylvania Hygrade, GTE, Nilco;

• Shape
• Console, Lowboy (legs < 50 %).

• Notes
• The Sylvania Model 4312 is an AC operated 3 Tube Phono Amplifier with 4 Speed Automatic Record Changer.

• Circuit diagram reference
• Beitman Radio Diagrams Vol. 19, 1959

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Date 11-59, Set 462, Folder 17)

• Author
• Model page created by Hinrich Grensemann † 15.5.16. See "Data change" for further contributors.

• Other Models

• Here you find 1087 models, 455 with images and 956 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Sylvania (Hygrade, GTE, Nilco); Emporium (PA)