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Why an AC Power Cord cannot make a difference

Why would doctors fuse your vertebrae together? How long where you in surgery for this?
A day. It seems that when someone makes a left turn in front of you and then floors their car to get by you before you hit them at 45 MPH but they are unsuccessful & you hit them, the forces twisting your body (even though you tried the breaks & turning in the direction that they were going in the nanoseconds that you had before impact) are not good for you.
My WIFE's (I had gone to fuel it up so that it would be full went I went to pick her up at the airport after she had been over seas for 18 months) 2012 Lexus that we had imported from Guam (where she had purchased it new [which only had 48,000 miles on it at the time of it's destruction] {which happened March 25, 2023}).
My neck is now fine.
But tendons were torn, muscles were torn from their mounting points and I still cannot walk a 1/4 mile (or be on the computer a 1/2 hour) without going into excruciating pain.
I am about 60 percent better than right after the accident and through physical therapy, masseuse, walking & doing stretching exercises in the 5 feet lane at the pool in the gym every few days, I still have not been able to work or mow my own lawn (& I have a 50" riding mower).
It's a slow, slow process for something that happened so quickly. But, every 3 or 4 weeks, it seems that something gets back to were it should be & I move a bit more freely & am in less pain.
 
If you want examples of people saying power, interconnect (analog or digital), speaker, etc. cables can have night and day differences with what appear to be insignificant material changes check out some other audio forums. There are reasons some cables might sound different, but when it gets to things like audible differences between 0.9999 and 0.999999 silver cables I'm out. Or things like silk is better than cotton is better than Teflon dielectric and so forth.
Yeah @DonH56 - In general I agree.
However the lower dielectric constant of silk or cotton, should result in lower capacitance.
So as much as that capacitance or the inductance changing matters, then it could be different, and should be measurable as different.
Hence I am willing to try a silk or cotton insulted example for some DIY ICs.

I am pretty sure it will not make a subjective difference, but if one believes that it will, then it might.
Since I don’t generally believe that, it is unlikely to be heard.
And most of the really $$$ examples have no supporting measurements or even comparisons.

At least the DIY jobs may end up looking nice and be the right length.
The other Mogami/Neutrik based DIY stuff I use seems to work just fine, so the change in material should just be a “Meh whatever” and they should sound the same.
 
No thread discussing the audibility of power cables should be allowed to reach four pages on a scientific board. :facepalm:

If people can't really make their minds up about speaker cable vs. coathanger..
Silly discussion.

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I tell the goofs who think they sound different that when your 100 watt Amp is running at a few watts, pretty normal, the power cord is only connected to the Amp 3% of the time, other wise the diodes disconnect it. And RFI is removed by the filter which any decent Amp has at the power connector.
 
A day. It seems that when someone makes a left turn in front of you and then floors their car to get by you before you hit them at 45 MPH but they are unsuccessful & you hit them, the forces twisting your body (even though you tried the breaks & turning in the direction that they were going in the nanoseconds that you had before impact) are not good for you.
My WIFE's (I had gone to fuel it up so that it would be full went I went to pick her up at the airport after she had been over seas for 18 months) 2012 Lexus that we had imported from Guam (where she had purchased it new [which only had 48,000 miles on it at the time of it's destruction] {which happened March 25, 2023}).
My neck is now fine.
But tendons were torn, muscles were torn from their mounting points and I still cannot walk a 1/4 mile (or be on the computer a 1/2 hour) without going into excruciating pain.
I am about 60 percent better than right after the accident and through physical therapy, masseuse, walking & doing stretching exercises in the 5 feet lane at the pool in the gym every few days, I still have not been able to work or mow my own lawn (& I have a 50" riding mower).
It's a slow, slow process for something that happened so quickly. But, every 3 or 4 weeks, it seems that something gets back to were it should be & I move a bit more freely & am in less pain.
Man alive! That sounds horrible. I broke my pelvis when I slid under a car, broke my collarbone going over the bars on a downhill on a fast 2 stroke and busted my tailbone when wheelieing and climbing a hillside at the same time on another fast 2 stroke but I never had the issues that you have long term. That sounds really bad. I hope in time you can be back to your regular self and not be subjected to all this pain and discomfort. :D
 
Man alive! That sounds horrible. I broke my pelvis when I slid under a car, broke my collarbone going over the bars on a downhill on a fast 2 stroke and busted my tailbone when wheelieing and climbing a hillside at the same time on another fast 2 stroke but I never had the issues that you have long term. That sounds really bad. I hope in time you can be back to your regular self and not be subjected to all this pain and discomfort. :D
Thank you so much! So far, I am progressing (albeit rather slowly & in fits & starts) every month.
From 2 days after the accident I could not stand, sit or lie down without being in excruciating pain 24/7 to now, when most of the time I feel some pain and if I walk 1/4 mile, I will have to sit down & relax because if I proceed further, I will again be in great pain. But before, I would be down for 3 days when I walked that 1/4 mile.
Now, I can relax 20-30 minutes & do it again.
Its been a year & 7 months but I am still progressing, so that is a good thing.
 
Thank you so much! So far, I am progressing (albeit rather slowly & in fits & starts) every month.
From 2 days after the accident I could not stand, sit or lie down without being in excruciating pain 24/7 to now, when most of the time I feel some pain and if I walk 1/4 mile, I will have to sit down & relax because if I proceed further, I will again be in great pain. But before, I would be down for 3 days when I walked that 1/4 mile.
Now, I can relax 20-30 minutes & do it again.
Its been a year & 7 months but I am still progressing, so that is a good thing.
Good... It seems you are slowly recuperating and exercising those legs... :D
 
Man alive! That sounds horrible. I broke my pelvis when I slid under a car, broke my collarbone going over the bars on a downhill on a fast 2 stroke and busted my tailbone when wheelieing and climbing a hillside at the same time on another fast 2 stroke but I never had the issues that you have long term. That sounds really bad. I hope in time you can be back to your regular self and not be subjected to all this pain and discomfort. :D
I always healed from breaking things pretty quickly (never broke my pelvis, though).
I think that the fact that I have had sepsis twice (once in 2017 [2 weeks in a hospital in Saipan, then transferred to Guam & under my wife (a nursing school graduate who became a pre-school teacher instead & a certified masseuse & my family physician there for 3 months & once in 2018]).
In May of 2018 it was caught very early, so there was no hospitalization.
But I believe that having had sepsis twice has really compromised my healing processes. And the fact that I was already 66 years old when the car accident happened. They say that you don't heal as fast when you are older.
Again, thank you for your positive thoughts.
 
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No thread discussing the audibility of power cables should be allowed to reach four pages on a scientific board. :facepalm:

If people can't really make their minds up about speaker cable vs. coathanger..
Silly discussion.

I don’t really see the point in comparing the frequency response for ^those^ sorts of things.
Better would be if “they” showed some difference of what is happening in the time domain, IMO.
Of course “they” never supply that stuff.
If they did, then it could become compelling.

Or alternatively, if they showed the power supply voltage with cord-A and then again with cord-B being aligned, and showed some better, or different, behaviour on the voltage… then that could be compelling.
The fact that it is never shown suggests that it is probably not helpful to their cause.
 
Yeah @DonH56 - In general I agree.
However the lower dielectric constant of silk or cotton, should result in lower capacitance.
So as much as that capacitance or the inductance changing matters, then it could be different, and should be measurable as different.
Hence I am willing to try a silk or cotton insulted example for some DIY ICs.

I am pretty sure it will not make a subjective difference, but if one believes that it will, then it might.
Since I don’t generally believe that, it is unlikely to be heard.
And most of the really $$$ examples have no supporting measurements or even comparisons.

At least the DIY jobs may end up looking nice and be the right length.
The other Mogami/Neutrik based DIY stuff I use seems to work just fine, so the change in material should just be a “Meh whatever” and they should sound the same.
Run the numbers and see if you think the capacitance will make a difference*. Silk or cotton absorb water (and impurities) and may degrade over time faster than other more common plastic-related dielectrics. Cotton strikes me as particular bad for that, handling noise, and such (check the tribology) though silk has been used in some cables to reduce stiction to the outer insulation layer.

Measurable, yes, audible, I vote "no" unless there is some extraordinary circumstances. Belief in differences unsupported by other evidence sells a lot of products.

* Dielectric constants: Polypropylene ~1.5, PTFE ~2, cotton ~1.4, silk ~3 (so worse than PTFE), PVC ~3.4

Source (one of myriads):https://prod-edam.honeywell.com/con...-dielectric-constant-table.pdf?download=false
 
However the lower dielectric constant of silk or cotton, should result in lower capacitance.
So as much as that capacitance or the inductance changing matters, then it could be different, and should be measurable as different.
Hence I am willing to try a silk or cotton insulted example for some DIY ICs.
There are darn few safety rated silk or cotton insulated AC power cords available.
But in any case, the thickness of the insulation will have more impact on the capacitance than the dielectric constant.
 
There are darn few safety rated silk or cotton insulated AC power cords available.
But in any case, the thickness of the insulation will have more impact on the capacitance than the dielectric constant.
I was talking about ICs, but yes the equation for capacitance and also inductance have distance.

I can see how capacitance could affect something like a LOMC driving it.
But on a power cord I have a harder time understanding how Hoover dam, a nuclear plant, etc can have a hard time driving through that power cord.

I could see my self making one though… I would likely be more easy for me to justify it by having a length that I want.


Run the numbers and see if you think the capacitance will make a difference*. ..
^That^ is the problem…
Once one runs the numbers, then the magic is gone. ;)
 
I was talking about ICs, but yes the equation for capacitance and also inductance have distance.
This thread is about power cords... Not that off-topic means much.

^That^ is the problem…
Once one runs the numbers, then the magic is gone. ;)
Reality bites.
 
I can't think of any recent good interconnects that use cotton or silk insulation.
I used to handle fine Litz wiring for very low level voltage audio signal path conduction. Tape heads come to mind in some older expensive gear. It was a pain to work with but it got the job done and was factory parts so factory replacement it was for parts. I also made about if memory serves me correct ~1800 RCA interconnects destined for retail with MIT cable that was all Litz wire with Teflon insulation on each strand. It was finicky and required a very hot solder pot with a huge amount of flux to get things soldered. I got the job done and never did that again...LoL... It was very smoky work even with a industrial vent hood overhead.
 
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I can't think of any recent good interconnects that use cotton or silk insulation.
I was going to reply that you are not looking high enough in the price range, then realized it was obviated by the word "good".
 
Litz wire with Teflon insulation is a stupid way to construct an interconnect.
Save the Litz wire for high frequency, high power cables.
Save the Teflon insulation for high temperature or silver plated wires.
I'm not up to speed on the dielectric Teflon advantages and disadvantages but it sure was difficult to work with. I was gagging on the amount of heat and Kester flux required to get it to take to solder. After some days of that I was worn out. I took the contract to make them for a wholesaler in the country and when I was done, I was done... No more.
 
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