• Country
• United States of America (USA)

• Manufacturer / Brand
• Bogen (-Presto), David Co., Inc.; New York, NY / Paramus, NJ

• Year
• 1970 ??

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 254898

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

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Powered by external power supply or a main unit. / 5 - 15 DC Volt

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

• Power out
• 40 W (max.)

• Material
• Metal case

• from Radiomuseum.org
• Model: Transistor Mobile Amplifier BT-20A - Bogen -Presto, David Co., Inc.

• Shape
• Tablemodel, with any shape - general.

• Dimensions (WHD)
• 4.5 x 6.5 x 4 inch / 114 x 165 x 102 mm

• Notes

• Bogen Mobile Transistorized 25 Watt P.A. Amplifier Model BT-20A.
  Gain: AUX. Radio  Input 90dB, Mic In 110dB
  Output Power:
  25 Watts at 14VDC; peak power 40 Watts
  5 Watts at 6VDC; peak power 8 Watts
  Output Impedance: 4, 8 or 16 ohms
  The BTA-20A is shipped with negative (-) side grounded.
   

• Net weight (2.2 lb = 1 kg)
• 4 lb (4 lb 0 oz) / 1.816 kg

• Mentioned in
• - - Manufacturers Literature (Installation and Operating Manual)

• Author
• Model page created by a member from A. See "Data change" for further contributors.

• Other Models

• Here you find 242 models, 219 with images and 158 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