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Romy,
Your findings are more congruent than not with
my own experiences with different
systems and environments.
Dedicated lines:. My experience with a dedicated line was when
I was in a detached house. The line corresponded to your first dedicated
(inhouse) line. In slight contrast to you I noticed a mild (but only a mild) improvement
compared to the house line. However I didn’t have dimmers or other nasty
devices and I lived in a smaller town about 60 miles from a big city. It seems that if there is any path whatever
then the “dedicated” line will experience leakage from other lines. I think the
only way around this is to have a second “drop” from the utility going to a
separate wiring installation (or separate room/building).
Line
distortion: I think that much of the distortion
from house non-audio devices (refrigerators etc) is ameliorated by randomization
of peaks and troughs. The key is how varied the other devices are (assuming
they are Not on the same circuit as audio). You have an unusual situation
because you have so many dimmers (one type of device).
Power regenerators:
They seem to behave as another component in the audio system rather than
something apart or preceding it. I had a PS Audio power plant at one time and
while it did some good things It was inconsistent in its effects. I assume from
your experience that the Pure Power regenerators are better but they also seem
to behave as components in the audio system. For example, I use a VPI SDS regenerator
to operate the turntable. When I stuck a balun in between the wall and the SDS
I noticed a reduction in noise level but like you I also noticed a negative
effect on the sound. However, if I stuck the balun between the SDS and the
turntable (ie the turntable plug into the balun and the balun into the SDS)
then I heard noise reduction Without a negative effect on the sonics. But note
that the SDS – balun – turntable motor have no direct connections with the
audio components.
As a side note
because of my dissatisfaction with the existing regenerators (other than the
SDS) I ended up going with PS Audio
baluns (UO). However, I found that each component had to be plugged into a
separate balun to achieve significant results. The baluns are then daisychained
back to the wall. The balun is supposed to reduce noise bidirectionally and it
does seem to do that. (Most reviewers did not use a separate PS Audio balun for
each component. leading to equivocal results IMO). I felt that the sound was
more natural with the baluns than the power plant. The drawback is that I’m
still at the mercy of the utility to some extent since I have somewhat less
insulation from their garbage. I will try the Pure Power regenerator this year
and hope it does better. But I suspect I will still need baluns if the SDS
experience is any guide.
As for your
installation I agree that was a brilliant idea to have the two splits on the
(improved) dedicated line. I would also be interested in any experiments you do
in trying to buffer the individual components from each other.
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