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How much do you weight the power cord from outlet? - Page 6

post #76 of 83
This is my new list:

Headphones: 35%
Vibration isolation: 26%
Valhalla power cord: 16%
ERS Paper: 14%
Interconnects: 4%
Headphone cable: 3%
Premier Power Plant: 1%
DAC: 0.6%
Amp: 0.3%
Transport: 0.09%
Digital cable: 0.01%
post #77 of 83
Quote:
Originally Posted by rhymesgalore View Post
So how long are the cables inside your walls from the breaker box to the wall outlet you're using? And what material are they?
I made a 2 year blind test. I experimented and came to the conclusion that my apartment wiring is 14awg and made of copper with bad insulation. When I looked inside the wall the wiring looked just like I thought it would look. I haven't measured but it looks like 14awg.

But the crappy apartment wiring doesn't bother me because Valhalla cleans it up and makes it sound smooth and transparent.

The length is around 20 meters, but the gauge size matters more than the length.
post #78 of 83
nvm
post #79 of 83
I could be wrong but I think of flowing current as similar to flowing water. The things affecting the quality of this flow are turbulence and variations in flow rate (voltage) and pressure (current). The torrent of water rushing from the power station is very turbulent, like a mighty river raging. As this huge amount of fast flowing water gets slowed down through smaller channels the speed and pressure are reduced. Maybe a good power cord has the same speed and pressure of flow as a cheap one, but the "water" (current) is flowing more smoothly, with less turbulence.

Similar to the way water flowing from an open tap in an old house can be swirling around as it comes out of the tap, all turbulent and messy.

Newer houses have a few sheets of mesh in a little metal or plastic device as seen in most modern bathrooms which can reduce this to a nice smooth flow. You may have to open the tap a little more but you can get identical flow rate and pressure, but with much less turbulence.

A good power cable is that little piece of metal or plastic screwed in the end of your bath tap. It smooths out the flow, regardless of what the juice was doing at the power station or in your walls.
post #80 of 83
Nice example ^ don't know how accurate it is in its application to electricity.

But eloquent anyway.
post #81 of 83
Cheers, I've always found analogies between electricity and water to make things easier for me to understand. I don't know how accurate that is with power cables either but it makes sense to me for current and voltage with too much current (water pressure) through a cable that's too thin causing excess heat and the cable to melt, or the pipe to burst.
post #82 of 83
Out of morbid curiosity, I read every post in this thread, from beginning to end.

Scary, very scary.

Theoretically, with all that is known scientifically, in this world about electron theory, RFI, etc. the last two meters of wire supplying 120/220VAC to one's power supplies, cannot make any difference whatsoever in the resultant "sound" of one's audio system.

It is a given that the wire is capable of carrying the current needed so as not to suffer from I/R drop. With any headphone system, 22Ga. copper should be sufficient.

If the afformentioned 2 meters of power cord contains filtering components either lumped sum, or discrete, such as ferrite chokes to remove RFI hash picked up in the previous 10km of wire to one's abode, then yes, there may be some improvement to be had, particularly if the power supplies in one's equipment are poorly designed in the first place.

All of that said, I did an unscientific experiment comparing a cheap stock type power cord to an expensive (for me) $99 power cord. The expensive cord claimed only to have the finest wire inside of it. The expensive cord claimed to be foil shielded. The wire claimed to have no additional RFI filtering in it's design.

These two power cords were used to power my HR MAX, which to my understanding, has a very well designed power supply.

Against all scientific knowledge and theory, subjectively, I heard a difference between the cords. To me, with the $99 cord, the sound had more "blackness" between instruments, better inner detail in the music, etc.

Make sure you read and understand my use of the word "subjective" and "unscientific" in my post.

Besides all of that, the fat, garden hose sized, power cord going into the back of the Max looked really cool. Did the aesthetics and psychology of that big beefy 10 Ga. power cord influence what I thought I was hearing? Ya, probably. I kept it anyway, 'cause it still looks cool coming out of the back of the Max.
post #83 of 83
Quote:
Originally Posted by Chu View Post
Way off topic, but this seems really hard to quantify to me. I've never heard an amp that makes me tempted to shell out more money for my Grados, but I've heard a few that are definitely on my "to-buy" list for my Sennheisers.
I wasn't speaking headphones.

I didn't type 'phones in that post at all.
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