2 x 12 watt ultralinear EL84/6P14P power amplifier.


2 x 12 watt ultralinear EL84/6P14P power amplifier.

Amplifier without power supply:
2 x 12 watt ultralinear EL84/6P14P power amplifier with LTP common mode feedback

Tubes pr channel:

  • 1 x ECF80, gain stage and CCS.
  • 1 x 6CG7/6FQ7 phase splitter.
  • 2 x EL84/6P14P output tubes.

    Front end:

  • ECF80 gain stage.
  • Long tail pair splitter with common mode feedback and pentode CCS.
    2 x 12 watt ultralinear EL84/6P14P power amplifier with LTP common mode feedback

    Output stage:

  • EL84/6P14P pentode in ultralinear.
  • Sowter U064 output transformers.
    2 x 12 watt ultralinear EL84/6P14P power amplifier with LTP common mode feedback

    Distortion at max power (12W) vs frequency:
    From bottom to top: 7th, 5th and 3rd harmonic.
    2 x 12 watt ultralinear EL84/6P14P power amplifier with LTP common mode feedback

    2 x 12 watt ultralinear EL84/6P14P power amplifier with LTP common mode feedback


  • Output transformers by Sowter UK
  • Mains transformer and choke by Hammond CA
  • Tubes and other stuff from Motron NO, ELFA NO, Partsconnexion CA
  • Overall design by: Jan Erling Veiset.
    (c) Jan Erling Veiset, November-2009 - E-mail: jan.erling.veiset[at]veiset.net
    Akersora 2
    N-6600 Sunndalsora
    Norway

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