• Country
• United States of America (USA)

• Manufacturer / Brand
• Bell Sound Systems; Columbus (OH)

• Year
• 1946 ?

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 186242

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

• Number of Tubes
• 7

• Valves / Tubes
• 7B7 7B7 6SL7GT 6N7 6V6GT 6V6GT 5U4G

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 50-60 cycles, 117 Volt

• Loudspeaker
• - For headphones or amp.

• Power out
• 15 W (18 W max.)

• Material
• Metal case

• from Radiomuseum.org
• Model: Amplifier 3715 [tube 6SL7GT] - Bell Sound Systems; Columbus

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 422 x 193 x 255 mm / 16.6 x 7.6 x 10 inch

• Notes

• The Bell 3715 is a 15 watt amplifier with two microphone and one phono input.

  See also the variant Bell 3715 with the single triode 6SF5 instead of the 6SL7GT (only one triode used here).

• Net weight (2.2 lb = 1 kg)
• 11.9 kg / 26 lb 3.4 oz (26.211 lb)

• Literature/Schematics (1)
• Radio Master's Catalog, 15th ed., 1950-51, pg. B-5.

• Literature/Schematics (4)
• Photofact Folder, Howard W. SAMS (Set 22, Date 8/47, Folder 4712-8)

• Author
• Model page created by Ernst Erb. See "Data change" for further contributors.

• Other Models

• Here you find 115 models, 111 with images and 70 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Bell Sound Systems; Columbus (OH)