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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: Output power difference between two type 45 tubes posted by David W on February 1, 2007 at 04:56:12:
This is why tube matching is important even in single ended amps.There can be considerable differences in bias settings for tubes, even new tubes. What you do not know is if the actual output for the maximum current is different between the two tubes, only that one is more sensitive than the other at the settings present in your amp. That your tubes may be used complicates matters as tubes tend to weaken in output over time. The more one tube is used, the less output it may have.
You could (gasp) use a balance control in your preamp.
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Follow Ups
- Re: Output power difference between two type 45 tubes - Chris O 06:20:59 02/01/07 (1)
- Re: Output power difference between two type 45 tubes - David W 07:18:47 02/01/07 (0)
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