"Andy Evans" wrote in message
...
Recreating fine detail, faithfully timbre in music is all very well but
you
want those dynamics too - its all part of the listening experience. Good
live unamplified music is anything but boring surely?

Maybe I'm not describing this correctly - the dynamics are there, but what
is
absent is the reproduction of sounds 'larger' than they are in real life
through added reverberation and hash in the hifi reproduction system. Take
away
this added 'presence' and the original experience remains. If you are used
to
resonances of various kinds enlarging the sound, then the effect is of
removing
something or making the sound smaller. One example is a listening test I
did
with three types of ICW capacitors (47uF) which increased in size and
power
rating (160 to 630v) as the film used got thicker. The smallest was about
an
inch diameter, the biggest the size of a coffee cup. The biggest was the
most
acoustically dead, and the sound was as I describe - more focussed and
less
lively. However, though I preferred the large cap, an audio designer
sitting
next to me preferred the middle one, saying it was more lively and
interesting.


=== Andy Evans ===
Visit our Website:- http://www.artsandmedia.com
Audio, music and health pages and interesting links.

47µF is not a large capacitor. I remember from my student days being taught
that
the working voltage of an electrolytic should be rated at 1.4 times the
voltage across
it (providing that it will always operate under loaded conditions) and that
elctrolytics
with a working voltage rating much higher than the actual voltage across
them gradually
loose their ability to operate at the higher voltage.

The reason you liked the second capacitor better may be that it had a
better
electrical performance. There are so many factors beside just capacitance
and DC voltage working. for example ESR, Impedance, and Ripple factor.

Iain