Romy the Cat wrote:

Instead of simply fixing the PP2000 you decided to try isolation transformer way.

Romy the Cat wrote:

Can you provide more details how you made your 15KVA isolation transformer?

tuga wrote:

A local audiophile - who works or worked for the Public Electricity Supply System - has optimized his domestic installation by lowering the circuit impedance to insure a high Short Circuit Current. In his words, the Short Circuit Current has a similar effect to an engine's flywheel in an internal combustion engine: it absorbs transients and stabilizes operation. It might be an interesting subject to investigate.

manisandher wrote:

With all due respect Romy, you of all people know that applying the term "simply fixing" to the PP2000 is ridiculous. I don't have the patience you've shown to get just one of your PP2000s working to your satisfaction.

manisandher wrote:

OK, can't seem to attach a 140KB image...

Romy the Cat wrote:

I will go today to a store and will buy 25 cheating plugs, completely isolating  my playback ground from PP2000 ground an use my own ground.

manisandher wrote:

Well this is what I was struggling with. Will cheater plugs truly isolate your playback from the PP2000 if the Neutral is still shared between your playback and the PP2000? Of course, if your own ground is not bonded to the Neutral, then yes they should. But is this a safe thing to do?

Romy the Cat wrote:

Are advocating a scenario to use Neutral bout to ground and to use external ground as external neutral?

Romy the Cat wrote:

... you did not make those comments about electricity by listening of that Jeff Buckley, did you?

manisandher wrote:

I'm actually not advocating anything to you Romy. I'm just asking whether you are bonding your dedicated ground to Neutral. If so, I can't see how cheater plugs would help in your situation - your dedicated ground and your house ground would still be connected via the Neutral. In which case, what's the point of a dedicated ground??? To understand my thinking overall, just look at how things are done on a metal-hulled yacht. Here, they have to get true isolation, or else the metal hulls would corrode over time in the sea water.

Eventually I got electricity-wise what I had in my old listening room. It turned out that the last straw that I was missing was Lavry ADC that was connected to ground of my remote switcher.

http://www.goodsoundclub.com/LatestPosts.aspx?ThreadID=8015

I as under impression the since my IP switcher box has lifted ground then whatever is connected to it shall not have ground lifted. I was not the case and until I individual lifted ground on each individual piece of equipment I did not have good result.  As I did removed ground on each individual piece of equipment then I lost my HF loop and was able to use my own dedicated ground. So, I have no the same configuration as I had 2 years back only now I can ground my playback. There is not a lot sonic difference that I hear between floating ground and grounded ground, the only disadvantage with lifted one is that I pick up some static discharge on my finger tips sometimes… I said that there is not a lot sonic difference as there is some very minor difference, with advantage of floating ground, but it is so minor that I find it practically negligible. What I connect my own ground to playback I do it in single location – the preamp chassis.

So, what sonic benefit I got with absolute abandoning of Ground would it be wall ground, my own ground or PP2000 ground.  I have redaction of HF “extension” and more characteristic MF. My MF is very idiosyncratic, it is YO186-colored MF and I do feel that grounded electricity dilute the YO186 colorations. The no-ground electricity removes some gloss from HM, making upper range drivers more idiosyncratic and more distinguishable. I like it a lot, in fact I feel that now my upper range a bit more colored then I need, thanks fully it is very easy to adjust.

Interesting that use of second PP2000 still exhibit an addition of brightness, even though I feel that without use of any grounds the effect is much smaller. Well, it is not smaller in amplitude sense but rather less devastating. With common ground two PP2000 are just zippy. With absolutely eliminate common grounds Sound with second PP2000 is brighten but not zippy. What I am taking about eliminated ground I of cause am taking about the load side of PP2000 not the source side- the wall’s side of PP2000 is running from normal wall ground.

The only problem that I see in my current configuration is  that cheater plugs are too flimsy and the contact can get loose. The 3 point plug is much firmer contact, particularly with heavy power cables. I would like to have custom cheater plugs gone. The cheater plugs that I would like to have would be the 3 pins contact but the ground just disconnected internally. I mean the female ground contacts shall be there as it holds the center ground pin of power cord very tight but the female ground contact shall not be connected to male ground contact of the cheater plug adapter.

Romy the Cat wrote:

I still doubt that you were, by the virtue of insulation transformer and ground, able to get what PP2000 gives but as you understand there is no ways, or even needs, to address my doubts.

Romy the Cat wrote:

BTW, there are reasonably simple tests to verify that your unit does or does not have the problem that my November units has, the testing procedures you will need to get from PurePower.

Romy the Cat wrote:

I do not exactly buy the notion that “your new mains circuit would help get the best out of the PP2000” ...