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Old January 13th 05, 06:06 AM posted to uk.rec.audio
Iain M Churches
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Posts: 1,061
Default DBT a flawed method for evaluating Hi-Fi ?


"Andy Evans" wrote in message
...
Someone else, in the cap testing thread, pointed out thatone might be more
likely to detect a difference between caps in an amp with a low parts
count.
That's why the µ-follower stage seemed such a good idea.


Yes that was me. You can get the same quote from several different
sources,
e.g. Eric Kingsbury "With very simple circuits like this, the quality of
all
the active and passive parts is critical. Indifferent capacitors,
resistors,
and even switches, wire, solder, will be audible" with reference to his
6V6
(trioded) PP amp. reference:
http://audiotropic.netfirms.com/audio.html

=== Andy Evans ===



Hello Andy.

Yes. I realised it was you, but I did not mention your name
as you had not posted much in the cap testing thread, and I
thought perhaps you wanted to keep a low profile:-)

I am grateful to you for your suggestion, which has been
endorsed by many others. Without it, I would have built two
complete channels of power amplifier, plus psu units, many
many more times the number of components.

The test µ-follower is to be built by my BBC pal, to a circuit
drawn by another ex BBC engineer, Morgan Jones.

Iain