MK Modelversterker HV 230

Amroh NV (Radio Bulletin monthly), Muiden

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  • Year
  • 1953
  • Category
  • Audio Amplifier or -mixer
  • Radiomuseum.org ID
  • 306717

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

 Technical Specifications

  • Number of Tubes
  • 6
  • Main principle
  • Audio-Amplification
  • Wave bands
  • - without
  • Power type and voltage
  • Alternating Current supply (AC) / 127; 220 Volt
  • Loudspeaker
  • - This model requires external speaker(s).
  • Power out
  • 30 W (unknown quality)
  • Material
  • Various materials
  • from Radiomuseum.org
  • Model: MK Modelversterker HV 230 - Amroh NV Radio Bulletin
  • Shape
  • Chassis only or for «building in»
  • Notes

  • Significant for the HV 230 (HV means hoofdversterker or main amplifier) is that the two tubes EL34 are switched in Class AB. Reason was that Class A gives too low rendement. For this two stages of voltage-amplification were necessary. The first is the left-hand part of ECC40 (1). The other half functions as 'phase-splitter'. The second amplification stage is done by the second ECC40.

    This model is part of the so-called '200-serie'.

  • Mentioned in
  • Radio Bulletin, January 1953
  • Author
  • Model page created by Rob Majoor. See "Data change" for further contributors.

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