First of all, if you have
multiple of PP3000 then be advices that them connected in parallel substantially
descries sound quality for each of them. Then might be use ONLY at different
phases of some measures should be taken to decuple them by other means.
 Amir wrote: | | the interesting thing is Pure Power 3000+ Sensitivity to
AC quality. when the AC is good then the Pure Power has very smooth sound with
great transparency and when the AC is not good the Pure Power 3000+ has less
transparent sound with a-little (very minor) harsh sound. |
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How methodologically you
distinct the contribution to sound the come from regenerator vs the nastiness
that come from power lines? I mean when the elasticity is very bad and you have
the reported “harsh sound” then I presume that this harsh sound is caused by
bad electricity. You feel that “Pure Power 3000+ has less transparent sound …
harsh sound”, so why do you feel that it is the PP3000 the one that has less
transparent sound if the harshness comes from power lines? Did you developed any techniques to differentiate
the PP3000’s own harsh sound from power lines harsh sound?
| Amir wrote: | | I have used two Pure Power 3000+ in series but the result
was not good. |
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You absolutely should not do
it. The topology of the digital regenerators like PP make them unstable and in
fact dangers to be connected in series. The PP should warn the customers against
doing it and in fact drop any warranties if somebody insist to use PP in this
configuration. Hypothetically it is possible to use PP in series with an
insolation transformer between them but then the measures should be taken to decuple
then via ground, which brings own bad of the problems. Anyhow, I do recommend if
you are not familiar with topological idiosyncrasies of series connecting of switched
power supplies then do not connect PP in series.
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