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
My intention wasn't to 'troll'... Bear in mind that I'm referring ONLY to 'High End' Power Cords here - Hell yes, ICs and speaker cables make a diff, I've seen it on my (decidedly pedestrian!) system (Arcam 6+ integrated with Marantz CD 6000 KI sig and Celestion 5 speakers) Sturdy power cords made to electrical codes and Good Industry Practice is definitely a requirement - ther's nothing new about this. Hospitals use good quality bits because that's the relevant code and stuff like X-Ray machines draw oodles of power. Fine, use those robust pieces, you cant go wrong. BUT we need to draw the line somewhere folks. I've changed my power cord out of necessity (UK plugs to India code) - I'm certainly not blessed aurically to hear anything different. I'll bet it would sound coarse if the grounding was bad or the plugs were corroded, but that's plain to see and understand. What isn't logically consistent is the magic a $500 cord can do. And IMHO the cord better have a degree sorcery from Hobbitt U. to fulfil its expectationas. Finally, that's all I'm saying.
Snobgoblin: Even modest mass electronics can benefit from a thicker gage power cord or even a hubbell plug. If you have been visiting audiogon for a while there are a bunch of us that dedicate time to AC power quality and cords...... and differences do exist. If you browse through old threads you'll see even long time evaluation projects like Carl_eber has shared with us his experiences on power cords and this facts (sound changes that are heard not seen) are experienced by many. If that wasn't the case I assure you that there wouldn't be a business for the guys making them and a time and money investment from the audiophile crowd. Suggest you give it a try. Regards
I agree with Mikem and Hiwaves. My DIY tweaks is almost exactly what Mikem describes them. Mikem, please post here or email to me the VA rating of your isolation transformer. I'm about to buy one but not sure what VA rating will deliver the transient peaks in music. My wall socket wires are large enough for 20A at 240Volts. If I go for full 4800VA, the transformer size would be colossal!wouldn't it :)~
Snobgoblin: A $500.00 or $1500.00 cord is only worth it if you are willing to spend the money and can live with it (and hear it). You would of course want to audition the cord or have a return policy in writing. And you need not start with such an expensive cord. My cord retailed for $250.00 but was purchased for half of that. If the price is what you find upsetting then join the club, you will not find any arguments on this issue. Most IC's and speaker cables are horribly overpriced as well IMO. But some of the more expensive ones sure do sound pretty good and some do not, it is a matter of taste. I view PC's as a form of equalizer or tone control (the same with other cables). They all sound different because of their varied design philosophies which includes not only the materials from which they are made from but also the manner in which they are constructed. Synergy with the associated equipment is also a factor. With all of the talk of solder less connections on IC's it stands to reason that assembly alone can make a sonic difference, and why wouldn't this be true of a PC as well? After all these changes all alter the signal whether it be music or current. Your reasoning that there is a maximum level of quality that can be achieved in a PC that makes any further changes useless, is interesting. Who decides what this level of achievement is. If you cannot hear further improvements or any differences between the cords then I guess that that is the end of the road. But you first need to listen to the cords to get to that point. If I can hear an improvement in my midfi system then you should be able to as well. Try something with a return policy, it need not be expensive (like a LAT), but try something. PC's also require break in like any other cable. I would also suggest that you read "Son of the Circus" if you haven't already.
I agree with Redkiwi. i've tried many power cords, and they all sound different. If anyone else does the same, and they do not sound any different TO THEM, then that's fine. Just don't tell Redkiwi, or me, what we are hearing, or not hearing. I COMPLETELY AGREE that the order of difference when changing a powercord, approaches that of changing a speaker cable. I suspect that most anyone could hear this difference, providing that they are listening to their system and it's effect on the reproduced recording of the music, and NOT to their listening room functioning as some kind of echo chamber, where such changes (as AC cords or cabling) get drowned in the sea of low resolution. I've heard this in most of the systems I've visited, and in all the ones where there was not proper room treatment.