GoodSoundClub - Romy the Cat's Audio Site

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

Post Subject: Teasing, who me?Posted by manisandher on: 3/25/2011

Romy, no not at all. I'm listening to music right now and prefer running directly from my new AC mains rather than from the PP2000 battery. But it's so soon after my dedicated mains system has been installed that maybe I should just wait a while before reporting anything else about the sound.

But I want to make a couple of things clear.

1. When I said "connected to the mains inlet to the house", I meant as close to the inlet as my electicity company would allow me to go, i.e. right after the meter. The isolation transformer has a dedicated isolation switch and consumer unit (with MCB) In this respect, I seem to have a similar setup to Jorge.

2. (You will have to forgive me now because there may be a number of factual errors coming - I'm not an EE, and not particularly good at electronics.) I am NOT using an isolation transformer to try to reduce noise, or at least, this is not the primary reason. I'm using it so that I can truly isolate my dedicated ionic grounding system (http://www.erico.com/products/ChemRod.asp) from the house's grounding system. It seems to me that if the house's Neutral is bonded to the house's Earth, then the only way of truly isolating a dedicated grounding system is to use an isolation transformer and bond the Neutral of the primary to the Earth of the house and the Neutral of the secondary to the dedicated grounding system Earth. If an isolation transformer is not used, then surely the house's ground would contaminate the dedicated ground through the fact that both need to be bonded to a shared Neutral. I'm really basing this on the approach used to stop metal-hulled yachts from corroding. I'm pretty certain that the improvement in sound comes mainly from an ultra-clean <5 Ohms totally isolated grounding system more than anything else.

In any event, I had an objective - to match the sound of the PP2000 when running from battery. I've achieved this, and in my opinion, exceeded it. As proof, my PP2000 is already up for sale.

Mani.

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