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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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Tubes Asylum Questions about tubes and gear that glows. FAQ |
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In Reply to: RE: A tube journey with lesson learned, Re; KT88 & KT150 posted by Nunki on January 19, 2024 at 10:19:46:
Bias not only affects power-tube performance, but it can also impact the sound and the lifespan of said tubes. As already mentioned, if the bias voltage isn't negative enough, then the tubes will run hot. This is sometimes referred to as "biased hot," "red plating," or "running hot," and it not only significantly shortens tube life but can also result in a lack of output power and punch. On the other side of the coin, if the bias voltage is too negative (a.k.a. "biased cold" or "running cold") the amp will sound dull and lifeless, and some unwanted and unpleasant-sounding crossover distortion could well occur — and, much as we guitarists love distortion, this type sucks!
So, just like the idle on a car, the correct bias-voltage setting on your amp is imperative for performance, tone, and tube life. Thanks for playing your wisdom and way with words forward,
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Follow Ups
- Biasing - Mr_bill2 17:25:42 01/21/24 (0)
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