GoodSoundClub - Romy the Cat's Audio Site

In the Forum: Audio Discussions
In the Thread: It’s mad, mad, mad... electricity.

Post Subject: Sorry, it is impossible by topology.Posted by Romy the Cat on: 12/22/2011

Lx,

I do not think that my any of my PP2000 or PP3000 were been modified by APS specifically to suit my needs/complaints. Well, I did complain if I see something that is not right but there were (to the best of my knowledge) not customization for my units. In a past they did DC offset in my init as experiment but it intently made to the production. That is all the I know off. I wish that knowing my dirty mouth APS did something good custom for me and at least to test my units better then others but with all honesty they do not do even beter QC for my inits.

I personally do not feel that dedicated playback ground is a factor as I personally lift grounds for all individual components on the load side. As I do it and use a single path to ground, would it be wall, or my own, or juts absolutely no reference to ground – I detect no sonic differences.

I do insist that my PP2000 or PP3000 are absolutely immune from dimmer noise and I made a LOT of experimentation with it including different measurements and very demanding listening tests. The point that you have EU (240V version) is well taken, I can’t comment on it. From what I understand to swing twice more voltage from the same buttery it needed a lot of different action to be taken, I have no idea how PurePower do it and I do not know how different the 120V units from 240V.

However, I do question your comments. You claim that you “have always observed that dimmer switches (among other devices)”. What does it mean? Are you saying that when any devise in your house is switches then you can observe an event in PP2000 load? How do you observe it? The lights flip, the sound change, you can hear any clicks? You see the sinusoid event on scope? If your answer to any of those questions is “yes” then you just have a defective unit and you need to return it. Regardless what happen in the outside line the load after PP2000 shall not expire any event, not event at all. Well, if you have fast scope then you might be able to see very fast even but it will be less than half of period and then the sinusoid will be recovered. The half of period even shall not be auditable or visible in your load as the caps in your power suppliers will care voltage that time; we are tiling less than 1/120 of second. I might argue with you if you hear or do not hear the long term sonic results of using dimming or turning your refrigerator on but I absolutely deny the opportunity for you and for a properly working PurePower that an instant even in power line might be instantly propagated to the circuitry under the PurePower protection. This would be a severe violation of main operating principle of ANY on-line UPS device. The whole idea of the on-line UPS units is the get rid this possibility. You need ether fix your unit or to be more precise, more critical and more accurate with naming of your problems.

Rgs,
Romy the Cat

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