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On 4 Jan 2006 17:37:14 -0800, "RapidRonnie"
wrote:

Jim Thompson wrote:
snip
Uh..!? Tubes from different manufacturers are _massively_ better matched
than any two transistors or ICs from the _same batch_!

Tim

What a pile of nonsense!

I'm afraid it's true. Discrete power transistors vary much more than
tubes of a given type and manufacture run. That's why construction or
repair of high power solid state amps requires either factory-matched
sets or the use of a curve tracer to sort through piles of them.

Only because the design sucked in the first place (*). Probably
designed by a "tooobz" engineer ;-)

I have yet to see a single design that demonstrated the proper way to
do a stable A-B bias.

I know how but I ain't talking ;-)

Of course, the transistors come in N and P channel or NPN and PNP
types whereas tubes are not complementary. So it's apples vs. oranges.

Are apples or oranges better?

I like mixed fruit salad myself... apples, oranges, grapes, Kiwi, and
maybe some Pomegranate ;-)

...Jim Thompson
--
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