I dunno about the recording industry. For the most part, they are not in the business of trying to record sounds that appear realistic. They are trying to create music that is popular and sells well.
As for medicine, a number of the local to me (New England, USA) speciality cable companies make cables that are specifically designed around minimum noise. See this link as one example. I don't know if they include power cables or not.
New England Wire - Low Noise Cables
There's a number of papers published about the requirements that experimental physicists have for low noise cabling. Here's one specifically about power cables.
Noise Propagation in Power Supply Distribution.
I can't comment about Shunyata, because their marketing material is, well, marketing material. I don't think that people who frequency diyAudio are their intended audience.
They minimize the "triboelectric effect" -- if you take a high quality Pomona RG59 cable and attach it to a Keithley nano-Voltmeter just moving the cable causes a temporary charge to be created by movement of the insulation, and voila a voltage appears on the meter.
Keithley (now part of Fortive/Tektronix) and others provide special cables and connectors to deal with this.
True enough, but this thread is about Power Cords, where triboelectricity and other very low level effects are irrelevant compared to the high voltages (none less than Mains voltages 😱 ) and very low impedances are involved.
Oh, and about magic "power conditioners".
Also:
So people with too much free time in their hands can argue graininess until the cows come home.
Oh, and about magic "power conditioners".
Also:
Amen, Brother. 👍
So people with too much free time in their hands can argue graininess until the cows come home.
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Well, I spent the morning actually measuring the effect of some AC power cables as well as the effect of USB isolators. But, I can see that it'd be pointless to post the results here.
Have a happy new year, all!
Have a happy new year, all!
Recording studios do use Audiophile power cables. I know Wireworld and Shunyata are used there, maybe more companies. Check these companies web sites for more information. Shunyata has a division that makes equipment for medical use. The have pictures of heart monitoring equipment showing the lower noise floor with their products. The division is called Clear Image Scientific. This is also shown on their web site. I am not defending them just saying what I have seen.
Happy Holidays!
https://intlcordsets.com/blog/34-what-to-know-about-hospital-grade-power-cords.html
These cords are an affordable upgrade to the normal black IEC cords that audio companies include with their equipment. I like the clear plugs so that you can see how the wire is bonded to the prongs. I hope that we can all agree that low resistance in a power cord is a requirement of a good cord. In the normal free black cords the wire is just placed across the prongs and the only thing holding it there is the force of the molded black plastic.
These cords are an affordable upgrade to the normal black IEC cords that audio companies include with their equipment. I like the clear plugs so that you can see how the wire is bonded to the prongs. I hope that we can all agree that low resistance in a power cord is a requirement of a good cord. In the normal free black cords the wire is just placed across the prongs and the only thing holding it there is the force of the molded black plastic.
I’m in total disbelief that someone with allegedly technical background can repeat such marketing BS. What is the reason you are flooding thread with marketing links instead of qualified opinion or performed measurements?
Wires are crimped to connector prongs!
How would a wire just placed on the prong, allow 16A current and conform with regulations?
Moulded power cords are not necessarily the work of the devil. 😈
The moulding process involves a great deal of pressure to force material into a mould cavity, and is said to mechanically attach the connectors to the cables in a way that ensures strength.
Regardless of price, power cords used in the UK must conform to British Standard BS 1363, and an approved mark must be moulded into the 13 amp mains plug.
I have cut plus open and seen what is inside that is how. I have also had plugs on high current equipment like a vacuum get hot and then cut the plugs off and installed a aftermarket plug from the hardware store with screws that hold the wire and the plug was now cool. This is first hand by me, not marketing!
Why not cut another plug open and let the rest of us see what you saw?
The power cords to which you refer are "free" after all.
But, no, you'll simply tell us to do it for ourselves! 😉
Epistemological problem is that absence of evidence is not evidence of absence. How many people tried to measure Bybees to see if they showed any HD/IMD? Nothing seen, so a conclusion was jumped to that they then couldn't be doing anything at all. Not necessarily so, as Porgy once sang.
I don’t have to be told. 😛
You’ll excuse rough cut but I was in no mood for artistically better.
It is clearly visible that wire is crimped.
Now, your pictures please or it didn’t happen. 🙂
True. A proper crimp is gas tight. A test is to try to pull the wire out of the crimp. The wire should break before it can be pulled out of the crimp.
Now, its also true that crimped dissimilar metals, particularly in the presence of surface contamination, can potentially generate excess noise and or exhibit nonlinearity.
Apples and oranges, I cut open American plugs. I have seen so many USA plastic plugs overheat, I just throw then away so I do not have any to show you. Screw clamp plugs are great! Glad you are happy with your stock power cords.
Stock power cables in EU are much better than what’s on the picture. That was a free one coming along with some very low power electric appliance.
After seeing your picture tombo56 I believe that EU cords are better than USA cords. Thanks for cutting that one open and posting the picture of it.
https://www.flukenetworks.com/blog/...nsiderations-choosing-stranded-vs-solid-cable
I have built many DIY power cords and I like the sound of solid wire better. There are many reasons why solid is better, but many people here want to see measurements, I don't have any to show you but I can show you this link. I realize that this link is not about power cable, so no need to point this out to me.
A DIYer can build a pretty darn good power cord for their equipment! Can anyone share what they have built and liked?
I have built many DIY power cords and I like the sound of solid wire better. There are many reasons why solid is better, but many people here want to see measurements, I don't have any to show you but I can show you this link. I realize that this link is not about power cable, so no need to point this out to me.
A DIYer can build a pretty darn good power cord for their equipment! Can anyone share what they have built and liked?
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