• Country
• United States of America (USA)

• Manufacturer / Brand
• Challenger Amplifier Co. (Bogen); New York, NY / Paramus, NJ

• Year
• 1958 ?

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 324654

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

• Number of Tubes
• 11

• Valves / Tubes
• 12AX7 or ECC83 6AU6 6U8 6AV5GA 6AV5GA 6AV5GA 6AV5GA 6CM7 5Y3GT 5Y3GT 5Y3GT

• Number of Transistors

• Semiconductors
• Selenium-Rectifier

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 60 Hz, 117V = 110 -120 Volt

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

• Power out
• 75 W (unknown quality)

• Material
• Metal case

• from Radiomuseum.org
• Model: CHA75 - Challenger Amplifier Co. Bogen

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

• Notes

• Challenger model CHA75 is an AC operated 3 channel 75 watt PA amplifier.

• Literature/Schematics (1)
• Photofact Folder, Howard W. SAMS (Set 395 Folder 7 dated 4-58)

• Author
• Model page created by Dirk Taekels. See "Data change" for further contributors.

• Other Models

• Here you find 47 models, 43 with images and 36 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Challenger Amplifier Co. (Bogen); New York, NY / Paramus, NJ