- Country
- United States of America (USA)
- Manufacturer / Brand
- Bogen (-Presto), David Co., Inc.; New York, NY / Paramus, NJ
- Year
- 1937 ?
- Category
- Audio Amplifier or -mixer
- Radiomuseum.org ID
- 34478
Click on the schematic thumbnail to request the schematic as a free document.
- Number of Tubes
- 9
- Main principle
- Audio-Amplification
- Power type and voltage
- Alternating Current supply (AC) / 110 Volt
- Loudspeaker
- Electro Magnetic Dynamic LS (moving-coil with field excitation coil)
- from Radiomuseum.org
- Model: Amplifier B20 - Bogen -Presto, David Co., Inc.
- External source of data
- Ernst Erb
- Circuit diagram reference
- Rider's Perpetual, Volume 8 = 1937 and before
- Other Models
-
Here you find 243 models, 220 with images and 159 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
All listed radios etc. from Bogen (-Presto), David Co., Inc.; New York, NY / Paramus, NJ