From: firstname.lastname@example.org (Jorge Omar)
Subject: Re: Diodes as collector load?
Date: 9 Sep 2002 15:46:34 -0700
References: <email@example.com> <firstname.lastname@example.org> <7%1f9.1777$Ni4.email@example.com>
NNTP-Posting-Date: 9 Sep 2002 22:46:34 GMT
Could that be the reason that higly regarded SE amps usually have
about 0.5% 2nd harmonic at full power?
"Kevin Aylward" wrote in message news:<7%1f9.1777$Ni4.firstname.lastname@example.org>...
> "Ian Buckner" wrote in message
> > "Jorge Omar" wrote in message
> > news:email@example.com...
> > > Hello, Fred
> > >
> > > Thanks for your comments.
> > >
> > > - I'm trying to do a non-scientific experiment in euphonics - the
> > > theory by whish even harmonics are pleasant (even in fairly
> > > significant ammounts) to the ear, and that should be the main reason
> > > tube SE tube amps are higly regarded by some.
> > > (Shiels up! Heavy flames ahead!) ((-:
> > >
> > Many years ago in another life, I designed a preamp that had two
> > (switched) paths. One had a distortion level of 0.005%, the other
> > path had a bucket brigade delay line in it which increased the
> > distortion by 10x to 0.05%, almost all 2nd harmonic (plus, the
> > noise was worse, I don't recall by how much).
> > This was reviewed in the hifi press, and there were a number of
> > comments that the reviewers preferred the sound via the BBDL path.
> I'd be a bit sceptical on this. I agree that distortion can be
> perceived, as a clearer sound, and is probably part of the reason why I
> prefer a tube amp set clean, then a transistor amp. However, I doubt
> that distortions as low as 0.05% are really differentiable from 0.005%.
> One main issue here, is that this distortion is setting on top of,
> usually, a greater speaker distortion.
> Kevin Aylward
> SuperSpice, a very affordable Mixed-Mode
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