Reply-To: "Kevin Aylward"
From: "Kevin Aylward"
References: <email@example.com> <firstname.lastname@example.org>
Subject: Re: Diodes as collector load?
X-Newsreader: Microsoft Outlook Express 6.00.2600.0000
X-Inktomi-Trace: public1-pete2-5-cust19.pete.broadband.ntl.com 1031580739 1260 188.8.131.52 (9 Sep 2002 14:12:19 GMT)
Date: Mon, 9 Sep 2002 15:12:19 +0100
NNTP-Posting-Date: Mon, 09 Sep 2002 15:12:19 BST
"Ian Buckner" wrote in message
> "Jorge Omar" wrote in message
> > 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.
SuperSpice, a very affordable Mixed-Mode
Windows Simulator with Schematic Capture,
Waveform Display, FFT's and Filter Design.