• Year
  • 1939
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 184374

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

 Technical Specifications

  • Number of Tubes
  • 4
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Power type and voltage
  • Storage and/or dry batteries / 1,5 & 90 Volt
  • Loudspeaker
  • Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil)
  • Power out
  • 0.8 W (unknown quality)
  • from Radiomuseum.org
  • Model: 31 - National Dobro Co.; San Louis
  • Notes
  • Musical Instrument Amplifier.
  • Author
  • Model page created by Hannes Gerber. See "Data change" for further contributors.

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