Rerurn to Romy the Cat's Site

steverino wrote:

Romy said "When I had my magnetic and EMI probes running with open PP2000 cover then the probes showed me that I was in the middle of Chernobyl Black Forest. I think the PP3000  even more poisoning..." Now I begin to understand your concern about putting these PP units far way from your audio components. Have you found a safe Minimum distance for the PP from the system? (without requiring 500 shakti stones or 72 ambient field modulators)

steverino wrote:

You missed in my post one moment: “running with open PP2000 cover”. Running the unit with open cover is like to run a nuclear reactor without a containment chamber and half million tons of concrete. With normal closed box I did not detect any problems. BTW, in past the PP2000 box I think was better – they had some semi-soft rubber compound under the bottom of the top cover. The current units do not have it but the chassis still thick and heavy. I did not detect it had any influence to sound. In my old place I have it 3 feet from the rest of equipment, not I have probably 4-5 feet. I still would not advise to put your DAC on PP2000 or run 50 turns of phono cable around it. I would not put it in rack with the rest equipment unless it is VERY hard rack and you put it very much under the bottom. Anyhow, use common sense but it would be absolutely identical to any other switching power supplies. I have an alternative 12V switching power supply for my preamp (size of laptop PS) and if I use it right behind the preamp then I have a lot of brighter sound and my PS for preamp does perhaps 50mA, the PP2000 will do 15A…. Did you ever try to put your laptop PS while it charges batteries next to your tuner?

I would like to follow up one more time about the subject of PP3000 radioactivity.  Since my site kind of became a good and the only knowledge base about use of PP units I would like to provide sensible information.

Let me to demonstrate how I use the PP3000. I do not insist that I use it properly but what I do does make sense to me. Below is the picture of my PP3000 location. 

Since I do not finish to experiment with PP3000 it sites in kind of temp position and the enter stand with PP3000 and scope is extended for a foot from the back wall. However it does show the location of my PP3000 regarding the rest of my equipment. You can see a lot power cables on the back, 22 cables to be exact, they are all on the back. You can see a single Dominus cable in front; this is the interconnect from preamp to my right channel Milq. The cable loops a bit to run slightly further from PP3000, It does makes sense to me, even though I did not detect any sonic problem if I do not do it. In the right the closest components from PP3000 are the most vulnerable: tuner and A/D (sitting vertically). I did test it and there is absolutely no sensitively in them to the presence of PP3000.

However, if you look in the temp location that I was trying to use PP1500 in 2007 then it was bad location. Why it was temporary? Because my A/D processors did pick up noise from PP1500 as it was fitting a few inches from them.

Also, I know a guy who placed the DAC atop of PP2000 and the sound was horrible, I though the DAC was garbage. Reportedly he later on removed the DAC from atop of PP and it rehabilitated the DAC, supposedly…

So, you can get the idea…

Rerurn to Romy the Cat's Site