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Old June 17th 04, 09:21 AM posted to uk.rec.audio
Jim Lesurf
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Default Anyone Got a Cheap Valve Power Amp or Integrated Amp For Sale?

I am not certain if the following is intended as a reply to an earlier
posting of mine as you do not give a referenced quote to any of my
postings. Can your news program not do this? It would help me if you were
to include quote references when replying.


In article , Andy Evans
wrote:
the caps were ICW with three different thicknesses of film, rated from
150v to 630v. I got them from ICW and they explained in some detail the
manufacturing process and the fact that they were less resonant as the
voltage and sheer size increased. they went from an inch across to the
size of a coffee cup.


That may be their belief. However I still have no idea precisely what they
meant by 'less resonant', nor how they measured this, nor in what
circumstances. Hence I have no idea if what the actual differences may be.


Rating was 47uF. My perception of resonance in the sound was that of
diffuse location of (woodwind) instruments to very precise location of
instruments, using the same track. My perception of resonance agreed
with the manufacturers expectations. My designer chum simply preferred a
more resonant soundstage. I found it less accurate. Euphonics again.


Afraid my comments are as previously. I am happy to accept your are
faithfully and honestly reporting your experience. However nothing in what
you have said gives me any solid ground for knowing if I would agree with
your (or his) conclusions, or that the reasons you describe are the actual
cause of any differences.

To resolve this I'd need to see some measurements of the levels/spectra of
microphonic response, etc, in the actual system and environment. These
would (I hope!) allow me to determine the meanings of more or less
'resonant' in the relevant circumstances.

FWIW I am not personally interested in a 'euphonic' audio system. I would
prefer one that had no audible imperfections, and failing that to make them
as close to un-noticable as possible. Making imperfections 'pleasing' is
acceptable as a fall-back, but to me it is analogous to fitting your house
with rose-tinted windows. May look nice when the view is lousy, but tends
to get in the way when the view is excellent, and tends to make everything
look similar. However this is just my personal approach.

Slainte,

Jim


Slainte,

Jim

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