• Country
• United States of America (USA)

• Manufacturer / Brand
• Gibson Manufacturing Co., Kalamazoo (MI)

• Year
• 1947

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 181130

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

• Number of Tubes
• 4

• Valves / Tubes
• 6SN7 6V6 6V6 5Y3

• Main principle
• Audio-Amplification

• Wave bands
• - without

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

• Loudspeaker
• Electro Magnetic Dynamic LS (moving-coil with field excitation coil) / Ø 8 inch = 20.3 cm

• Power out
• 8 W (unknown quality)

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

• from Radiomuseum.org
• Model: BR-9 [push-pull 6V6] - Gibson Manufacturing Co.,

• Dimensions (WHD)
• 320 x 350 x 150 mm / 12.6 x 13.8 x 5.9 inch

• Notes
• Push-pull output stage.
  Gegentakt-Endstufe angesteuert mit Zwischenübertrager.

• Net weight (2.2 lb = 1 kg)
• 4.6 kg / 10 lb 2.1 oz (10.132 lb)

• Source of data
• -- Original-techn. papers.

• Author
• Model page created by Hannes Gerber. See "Data change" for further contributors.

• Other Models

• Here you find 25 models, 21 with images and 22 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Gibson Manufacturing Co., Kalamazoo (MI)