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#1
Posted to rec.audio.high-end
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6U10 vs. 6AC10
I have an amp that has etched for use 6U10, but in the tube sockets
are 6AC10. Is there a wide variance in these tubes? They are very similar in performance, but are they interchangeable? It was replaced when KT-90's were used instead of original KT88's. These tubes are hard to source, I am also in search of 6LU8's. I reside in Calgary, Ab. and the Parts Connexion does not supply them. Any advice would be soundly appreciated... Regards, Tony. |
#2
Posted to rec.audio.high-end
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6U10 vs. 6AC10
Tony Pike wrote:
I have an amp that has etched for use 6U10, but in the tube sockets are 6AC10. Is there a wide variance in these tubes? They are very similar in performance, but are they interchangeable? It was replaced when KT-90's were used instead of original KT88's. These tubes are hard to source, I am also in search of 6LU8's. I reside in Calgary, Ab. and the Parts Connexion does not supply them. Any advice would be soundly appreciated... Regards, Tony. The 6AC10 is listed as a direct substitution for the 6U10 and should be just fine. It is three triodes in a single package (listed as "High Mu triple-triode"). Other direct substitutions include the 6AV11 and the 6D10. NOTE: There is just enough variation between these tubes that in some few circuits there may be gain differences. As this is a power amp and you are doing no small-signal processing (microphone or phone inputs, for example) you should be fine with any of the above. Just try to use the same type in each channel. The 6LU8 is a Pentode/Triode and not even nearly equivalent. In general, I suggest that individuals who are given the dubious distinction of being responsible for the care and feeding of tube equipment should keep a good substitution-book or tube handbook handy at all times. http://www.amazon.com/Tube-Substitut.../dp/0672217465 And http://www.pmillett.com/technical_books_online.htm Will point you to all sorts of resources and literature. But in all seriousness, the Sam's book can be a life-saver, get one (of course, if everyone does try, the price will be more than $2.49....) Peter Wieck Wyncote, PA |