Drake L4B linear amplifier only 800 watts output. Probably need new pair 3-500Z tubes

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  • Опубликовано: 28 окт 2024

Комментарии • 7

  • @tompadberg336
    @tompadberg336 11 месяцев назад +1

    I looked at the brochure and if you can get 75W CW drive you may be close to the 1000W rating. Not bad performance though for the used tubes.

    • @moviestudioland
      @moviestudioland  10 месяцев назад

      Waiting for harbauch rebuild power supply board and soft start

  • @tompadberg336
    @tompadberg336 11 месяцев назад

    Looked again and it looks like amp’s plate and grid currents are near the limits so yes the tubes are soft

  • @scottb5662
    @scottb5662 11 месяцев назад

    Not all bad. Probably needs a pwr supply refresh. Put it on 240. Pair of Penta Labs 3-500zgs. Sell it for $1200

    • @moviestudioland
      @moviestudioland  11 месяцев назад

      I will lose money at $1200 as I have $$950 into it and new tubes $600 with tax and shipping. Capacitors will be $200. And I will never get $2000 for it even if perfect. I could try to punt and break even and sell it for $999 but the eBay fees. I lose money no matter what. Buying this was a gamble. I could return it. Probably should if I still can

    • @moviestudioland
      @moviestudioland  11 месяцев назад +1

      Makes sense to return it. Just needless work to fix it all up and break even unless I plan to keep it. I am undecided. I have until Jan 12 2024 to return it. I have the Henry amp still and the sb200. I wanted to experience the L4B. This one has rust on the cases but otherwise seems good. The plate tuning control is stiff