• Country
• United States of America (USA)

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

• Year
• 1952

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 264802

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

• Number of Tubes
• 4

• Valves / Tubes
• 6SJ7 6V6GT 6V6GT 5Y3GT

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Details
• Guitar Amplifier

• 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 (max.)

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

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

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 450 x 340 x 175 mm / 17.7 x 13.4 x 6.9 inch

• Notes

• Guitar Amplifier,
  later BR9-Model (from 1952-),
  Schematic like Model GA9 (2x 6V6 parallel),
  two Inputs, one Volume Control, On-OFF-Switch, Pilot Lamp.

  See also Gibson BR-9 2x 6V6 parallel with different shape.

• Net weight (2.2 lb = 1 kg)
• 6.9 kg / 15 lb 3.2 oz (15.198 lb)

• 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)