Tube Breakup Help

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themeedlyone View Drop Down
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    Posted: Jun 26 2014 at 8:04pm
im just wondering what the sound difference is between soft,medium,and hard break up power tubes. would soft break up be good for metal? just trying to figure out what the deal is :)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote proaudio Quote  Post ReplyReply Direct Link To This Post Posted: Jun 30 2014 at 1:48am
From Tung-Sol.com

FAQs

  • Question:
    What are soft, hard, and medium rated tubes?
  • Answer:
    When power tubes are matched, they are frequently classified by the distortion and break-up characteristic. The most common method is to refer to the tubes as Soft, Medium, or Hard. 

    Soft tubes reach saturation and break-up quicker. These tubes have lower plate current (Ip) and transconductance (Gm) matching numbers. They are preferred by blues guitarists for the break-up and sustain they provide. 

    Hard tubes have the highest amount of clean headroom before break-up and distortion. These tubes have high plate current (Ip) and transconductance (Gm) matching numbers. They take longer to reach saturation and are preferred by jazz, country, and bass players. Hard tubes are also used by guitarists who rely primarily on effects pedals to generate distortion. 

    Medium tubes fall in between soft tubes and hard tubes. They exhibit good headroom, but will break up and distort when pushed. These tubes have plate current (Ip) and transconductance (Gm) matching numbers in the middle of the range. Classic rock guitarists and players who play a wide variety of styles generally use medium rated tubes.
--Eric

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Post Options Post Options   Thanks (0) Thanks(0)   Quote themeedlyone Quote  Post ReplyReply Direct Link To This Post Posted: Jun 30 2014 at 9:39pm
Thanks again Eric :D
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