Rerurn to Romy the Cat's Site

PurePower wrote:

p.s. Do not follow the advice of creating a new ground for the audio system alone. Multiple grounds can cause very dangerous, even lethal, unintended consequences.

Actually it is incorrect. I do understand why a manufacture would take this position. If I were a manufacture I would threaten that I’ll void warranty if ground is lifted. But if I were a manufacture I would also electrocute any user who is republican, so my behavioral pattern is not the best judgment.

In reality to have a own dedicated, properly made ground for audio system is not only not dangers but very-very desirable. The ground that come from AC lime is dangers not the own dedicated ground. The ground as it usually made in residential houses is not so good. The power enters into the main destitution box and right here is it grounded to usually water pipes. If you have a short 200 feet always that the in-rash of currant must negotiate the impedance between the water pipes and the location of the short – and this is let say 200 feet of 12ga cable. This copper 200 feet run will resistance over 1.5R and if it twin-triple cable then 2-3 time higher. This is VERY bad ground to begin with, not to mention that all utility devises in the house defecate to the same ground wire. If a person live in apartment complex then the path even further. The point is that all ground polluters might be located between the playback and the true ground – not a good satiation.

If one has own dedicate properly made ground for audio system then the resistance of this ground is very-very low. I have 10 feet cable with 0.012R resistance and it is MUCH shorter path to any short or noise. There are people I know they install the ultra-low impedance grounds. They charge a lot of money and the give some insane numbers, like 0,00001R. I do not have equipment to measure my ground impedance. I have 15’ rod that I drove to the ground fertilized with alkalizes. So it shall not be bad but not near as close as it might be.

The point is that it is very simple to have your own ground much better than the wall’s ground. The problem with manufactures is the person who does it might be a Moron and whatever ground he/she did might be wrong ground. Manufactures have no control over it and therefore they understandably insist to use the dealt ground as it required by code. Still, it is not about the quality of ground but about management of liability. Understandable but not the final judgment from sonic  and system design perspective.

Rerurn to Romy the Cat's Site