• Country
• United States of America (USA)

• Manufacturer / Brand
• Thordarson Electric Mfg. Co. ; Chicago (IL)

• Year
• 1947

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 138994

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

• Number of Tubes
• 7

• Valves / Tubes
• 6SJ7 6SJ7 6SJ7 6N7GT 6L6G 6L6G 5X4G

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 117 Volt

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

• Power out
• 25 W (unknown quality)

• Material
• Leather / canvas / plastic - over other material

• from Radiomuseum.org
• Model: Amplifier T-31W25A - Thordarson Electric Mfg. Co. ;

• Shape
• Tablemodel, low profile (big size).

• Notes

• PA amplifier; inputs: 2x Mic + Phono.

• Mentioned in
• Radio Retailing (Radio & Television R.) (April 1947 page 106.)

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Set 9 folder 469-33 date 12-46)

• Author
• Model page created by Peter Hoddow. See "Data change" for further contributors.

• Other Models

• Here you find 64 models, 52 with images and 21 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Thordarson Electric Mfg. Co. ; Chicago (IL)