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The fallacy of ac treatment

I see a lot of threads related to managing and tweaking the ac powerout end of electronic systems. Much has been said about dedicated wiring, termination and even the right kind of extension cords to use. I work for an electric utility; and that's the extent of my credibilty here. The majority of you will no doubt be far more erudite wrt music hardware. Just a thought, though: domestic ac distribution goes thus: power station-step up-city-step down-subdivision-final step down. As far as the utility is concerned, you and all your neigbours are collectively the load for the step down tranformer. Any inductance/capacitance created by your neigbour running motors/tubelights, etc is felt by the lot of you. Additionally, the voltage frequency will almost always move around a tolerance from 50hz as the whole country turns on the air, off the lights - changes all the time as peaker plants ramp up etc. Nothing can change that- the frequency of the grid supplying your city is the frequency in the mains at your house. So what's my point? Well only that how much difference can the last 10 feet of cabling, etc make when the other hundreds of miles are outside of your control? And more importantly, frequency is one of the most imp parameters for measuring electricity quality (your expensive hand-coiled toroids are entirely subject to the f in the primaries) and nothing other than running an f generator can shield you from that. Methinks all the improvements you see from ac cord treatments are pyschosomatic. But that's cool.
snobgoblinf669
redkiwi
1,092 posts
 
Onhwy61, I am not sure I am understanding your point. You seem to be pooh-poohing specialty power cables and saying that the claimed beneficial effects defy "understood science". But surely the understood science would include such concepts as the effects of shielding and common mode rejection - two of the most common strategies used in specialty power cables. You don't mention whether you hold this view, not only because of understood science, but also by having tried specialty power cords. My experimentation with trying these various products tells me a $35,000 system ought to not be using stock cords, and that specialty power cords (for me at least) have a more beneficial effect than power conditioners and filters. I really don't care whether it is voodoo or understood science (neither concept do I trust) that makes this so.
dekay's avatar
dekay
2,959 posts
 
I trust Voudou, I'm just out of practice.
brulee
564 posts
 
PCs can and do make a difference. A profound one at that. Don't be ignorant, trust your ears. Excellent advice.
onhwy61's avatar
onhwy61
4,163 posts
 
Redkiwi, in my 11/5 post I did not state that power cords do not work; I said they were not a good value FOR ME. My experience is that power cords do make a sonic difference. Within the context of my system I have made a choice to address the problems of AC power by other, and I believe more effective, means. Obviously, my conclusions in this area only apply to my system and my tastes. A well designed power cord should only cost no more than $250US, yet I see products costing 5x (and more). I checked out one of the expensive PC wedsites and their explanation of what their product does was total nonsense. Now the reality is that their product may work in my system, but why would I buy a product, and an expensive product at that, from someone who I thought was bullshitting me? Power cords can make a sonic difference, but they don't work for the better in every situation. I trust my ears enough to know what works in my system. My advice to other is to do the same.
whatjd
615 posts
 
You know...I did try the Voodoo thing, to get rid of RF, etc)., but each time I stuck the pins in the power cord, I got this nasty shock. Anyone have any thoughts?
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