>
>> Yes it does, what it is actually about is not the bias per se, but the
>> cut-off voltage, which has to be higher (more negative!) for the more
>> lively Svetlana tube.
>
>The power gain of the Svetlana 572 is not higher, the problem is the
>cut-off bias requirement is higher.
>
>In amplifier that are not neutralized, this can cause the tubes to
>oscillate ...
// In Eimac's *Care and Feeding...*, a method of neutralizing push-pull
G-G amplifier is discussed. However, neutralization of single ended G-G
amplifier is not discussed. The reason seems to be that there ain't no
such animal. I spoke with a guy who owns two AL-1200s. The newer one
was "neutralized". The older one was not. He said that the older amp.
is more stable.
> ...
cheers
- R. L. Measures, 805.386.3734,AG6K, www.vcnet.com/measures.
end
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