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Why an AC Power Cord cannot make a difference

pma said:
Would you mind opening a new thread for this pub-like chat???
Click to expand...
A thread I've been meaning to create for a while, you reminded me;
www.audiosciencereview.com

The Pub

Welcome to The Pub. :cool: This is just a general banter thread, basically topicless. So if you've had a few, or just feel like discussing and posting other things that don't fit in other threads, feel free to do so here. As always, no political discussion please and general forum rules...
www.audiosciencereview.com www.audiosciencereview.com
This power cord thread surely has run it's course though... so it's completely understandable there is friendly off topic discussion and it isn't a review thread either.


JSmith
 
JSmith said:
A thread I've been meaning to create for a while, you reminded me;
www.audiosciencereview.com

The Pub

Welcome to The Pub. :cool: This is just a general banter thread, basically topicless. So if you've had a few, or just feel like discussing and posting other things that don't fit in other threads, feel free to do so here. As always, no political discussion please and general forum rules...
www.audiosciencereview.com www.audiosciencereview.com
This power cord thread surely has run it's course though... so it's completely understandable there is friendly off topic discussion and it isn't a review thread either.


JSmith
Click to expand...
Yes, as a "power cord" thread, it was done at 3 pages (probably before, but I am grading on a GIANT curve).
 
dedobot said:
I witness how a strongly bent i-Mac power cord catch a fire (one of those stupid white and mega flexible apple cables) . So - a power cord definitely can make a difference !
Click to expand...
Perhaps the real advantage of the clinical cord?
But surely not audible sound from the system.
 
Instead of upgrading all the internal wiring of the house and upgrading the power pole / transformer, isn't it a lot more economical to get "audiophile power" by using a DC laboratory bench power supply?

Something like this Rigol:

 

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Let's stick to facts here folks.

If a member or topic is out of line, report it. If it just annoys you, unwatch the thread.

Thanks for your consideration!
 
Ropeburn said:
Aw. That doesn't sound like very moderate moderation... ;)
Click to expand...

All depends on one's perspective but am going to moderate myself as to any further replies. :)
 
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So let's change direction back to northeast ... ehem ... on topic. :cool:
 
watchnerd said:
Instead of upgrading all the internal wiring of the house and upgrading the power pole / transformer, isn't it a lot more economical to get "audiophile power" by using a DC laboratory bench power supply?

Something like this Rigol:

Click to expand...
The power supply above only outputs 30V. And it didn't say how good the sine wave is.

A high power speaker amplifier will output 100V with a good sine wave... But may not work well with changing load impedance.

A workaround can be made if your equipment to be power has an SMPS: You only need to feed it a DC voltage.

Then you need to find something that outputs a DC voltage from AC mains. And that thing is called.. a power supply

At this point any sane designer will start looking for his reason for existence.
 
wwenze said:
The power supply above only outputs 30V. And it didn't say how good the sine wave is.

A high power speaker amplifier will output 100V with a good sine wave... But may not work well with changing load impedance.

A workaround can be made if your equipment to be power has an SMPS: You only need to feed it a DC voltage.

Then you need to find something that outputs a DC voltage from AC mains. And that thing is called.. a power supply

At this point any sane designer will start looking for his reason for existence.
Click to expand...

Horrible to be sure.

But less insane and cheaper than upgrading a telephone pole and transformer, right?
 
Mayan said:
Exactly my thoughts. And since when has providing credentials or for that matter which power cords are being tested in an A/B comparison such difficult questions to answer. One word, rudimentary.
Click to expand...
Allow myself to further expand on PC's and clarify any misconceptions about this particular post. As a hobbyist, enthusiast, and consumer power cords in my humble opinion rank as the most controversial of cords. Therefore providing data in the form of science driven as a reference guide by helping others rationalize their purchase is extremely important in comparison too placebo hearing or heard a difference. Believe you me I've questioned my own hearing abilities countless times before.

Disclaimer: The system is equipped with twenty three year old Signal Cable Magic and Digital PC's which disqualify me from any further discussion regarding boutique overhyped claims.
 
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My big power cord upgrade splurge, 14 AWG of hospital grade scrubs, arrives Friday.

How should I test it?

I've got a function generator, a digital multi meter, and an o-scope.
 
We don't know how to test it because we don't know what differences power cords are supposed to make.

Measure the RF emission, measure step response or something, i don't know
 
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