How can power cords make a difference?


I am trying to understand why power cords can make a difference.

It makes sense to me that interconnects and speaker cables make a difference. They are dealing with a complex signal that contains numerous frequencies at various phases and amplitudes. Any change in these parameters should affect the sound.

A power cord is ideally dealing with only a single frequency. If the explanation is RF rejection, then an AC regeneration device like PS Audio’s should make these cords unnecessary. I suppose it could be the capacitance of these cables offering some power factor correction since the transformer is an inductive load.

The purpose of my post is not to start a war between the “I hear what I hear so it must be so” camp and the “you’re crazy and wasting your money,” advocates. I am looking for reasons. I am hoping that someone can offer some valid scientific explanations or point me toward sources of this information. Thanks.
bruce1483
702, it sounds like you have played with as many power supplies as me. And yet unlike you I don't find exotic PCs silly. I did find them silly before I tried them though - which I guess is the difference between you and me. You illustrate this point even further when you comment about "exceptional quality systems that ... couldn't possibly be improved by adding any [PCs]." How can you know that if you didn't even try.

You see I think your mind misunderstands useful theory as completely explaining natural phenomena, and you simply deduce everything from that theory. This is not scientific at all, it is pompous and short-sighted. (I don't mean to be insulting because I am guilty of being pompous and short-sighted about things I am highly educated in - usually the ones I am most educated in).

Where I do agree with you is concerning the ludicrous claims of the marketers who are paid to sell audiophiles on manufacturers' product. Anyone that has a business with shareholders is obliged to do this. You tell them what is legal, but otherwise anything that will sell the product. Some of the advertisements and "piffle" on web sites is a hoot. But there is only one difference between the audiophiles that fall for it and yourself - the fact you are better educated in electronics theory. Otherwise they are just like you and deduce from a scientific theory whether something will be beneficial or not. You and they fall into the trap of believing in the completeness of a theory.

For example, there might hypothetically be unequivocal evidence to your satisfaction that a shielded interconnect cable will sound better than an identical unshielded cable. And so as the hypothetical pioneer of shielded interconnect cables I might write some convincing rubbish for the masses that gets them into a lather that they just have to have my cables. Both you and the ignorant masses would be wrong to conclude that my cable was better than all other cables, provided there was some other parameter that affected the performance of a cable. Hypothetically my cables might use steel conductors and a competitors' might use copper. The dilemna that you do not address is how do you decide whether the shielded steel cable will outperform the unshielded copper cable. The answer seems simple to me - you listen to them. For you it appears to me that you would prefer to see what a 'scope tells you than by listening. But how can the scope identify which form of distortion is most likely to reduce the listener's enjoyment?

Of course the example includes two issues (shielding and conductivity) that you probably accept as influential on the sound, and a dilemma that can be resolved - ie. get a shielded copper cable. But it is not always that simple. And where we have the problem incessantly in these argumentative posts, is where experienced audiophiles hear a difference, and you deny that report because of your pompous and short-sighted belief that you know everything that there is to know about reproducing music electronically. Frankly 702, that is just as much a "hoot" as some of the claims of the copywriters working for the cable manufacturers.
Has anyone else heard that the guy who continues to toot his own horn is the same guy that can not get anyone else to toot it for him?
Is any one else as sick of the tooting by the high and mighty as I am? It's all clear to me now!
702, ewe say:

"I've heard many, many audio systems of exceptional quality that had nary a designer PC, and couldn't possibly be improved by adding any..."

this blatant disregard for scientific method is pitiful. i can't believe we are still arguing w/someone who purports to believe in scientific method, yet completely ignores it, & who won't even trust using the most sensitive aural measuring device known - his own ears!?! 702, WHAT ARE EWE AFRAID OF??? are ewe afraid ewe mite be wrong? afraid of discovering science HASN'T yet discovered all the answers? afraid that yule have to spend more money on wire?

jadem6, 702's horn tooting is outta tune - whether it's live, on a boombox, or thru albert porter's stereo - w/or without designer cords... ;~)

doug s.

Guys, haven't you figured it out yet? 702 is getting exactly what he wants. It's not insight, education or sharing as with most of the participants here. It's your collective goats.
Fpeel, we have three choices. First, engage with 702, arguably letting him get our goats, but possibly driving the debate to some conclusion (eg. Jostler). Second, ignore him completely, thereby causing new (and other)posters here to be intimidated from posting any of their opinions, in fear of unchallenged attacks from the likes of 702. Third, not reply to 702's posts but vote against him.

I agree that there are problems with the first alternative. But I am more concerned about the second alternative as I have seen this outcome eventuate elsewhere and this forum therefore degenerate into the closed-minded talking to the closed-minded, getting solace from being right. The third option may be preferred by some, but I see it as the weasle's way out. If I disagree or disapprove, then I do not intend to hide behind the voting system.

Therefore, regardless of 702's motives, I feel the necessity to react to his contradictory position. If he, as you suggest, continues to post asinine comments here purely to feed his immature need to get a reaction then I reckon he will get a reaction until he grows up or goes away. If this feeds his need for attention, he is one very sick puppy, and most certainly not one that should be left to intimidate posters here.