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Tube preamp modded to use in transistor power amp! Help?

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  • Tube preamp modded to use in transistor power amp! Help?


    (Original Project:http://www.projetg5.com/Projets/G5/G...officielle.pdf)
    I need mod for these preamp (see schematic) to use in mosfet power amp.
    Because high impedance in out and high sinal i dont have use with transistor power amp.
    The ideia is this. But the output impedance and signal is very high to transistor amp.
    With high signal is bad because it can damage the transistor amp.
    With high impedance he is not so critical, but the sound it lacks some power and it has some noise.
    The "problems are detected", but i do not know to modify the original schematic diagram of preamp to make this adaptation.
    Any ideas to mod?

    Thanks

    Frankli

  • #2
    Normally I would use the signal at J3 "SEND." Is that not what you need?

    COnnect J3 to the input of your power amp.
    Education is what you're left with after you have forgotten what you have learned.

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    • #3
      Try using an active DI box like the Behringer DI100. They have a high impedance input and an adjustable attenuator that can handle high voltages.

      If it works, just take the guts out of the DI box and build them into your project. That will save you having to understand the details.
      "Enzo, I see that you replied parasitic oscillations. Is that a hypothesis? Or is that your amazing metal band I should check out?"

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