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Shunyata DTCD (new way to measure power cords)

post #1 of 72
Thread Starter 
Filed under: "This should get really interesting

Shunyata Research has developed a new way to 'measure' power cord performance.

Quoted from their site: " In layman's terms, it is a way of measuring current performance into typical electronic component power supplies. It allows the measurement of pulsed transient current through a variety of AC power products, including: power wiring, outlets, distribution panels, terminals, connectors, power cords and portable power distribution products."

Unfortunately the graphs they put out are missing labels for starters. Also not clear is the source of power that the cables were plugged into.


Will wait to see the white paper, what scientifically peer reviewed journals it is submitted to, and see if anyone else can duplicate their results and show that there is a measurable audible difference.
post #2 of 72
hundreds of feet of 12 and 14 gauge NM in-home wiring, held together with twisted compression fittings and these clowns are selling the miracle "last 6 feet". Ampacity and voltage drop are both directly related to wire gauge, which they don't mention for their products.
post #3 of 72
For the prices they charge and the "claims" they profess, they should market miracle cables that connect directly from the step-down transformer to your electrical panel. Also, super Romex, super outlets, and super breakers!

Think about it...
Great audio/video and clothes dry better, washers wash better, clocks that never lose time, microwave ovens that make better popcorn, cell phones that charge faster/last longer, doorbells that ring with clarity, PC's run faster...
post #4 of 72
Quote:
Originally Posted by Jinjuku View Post

Will wait to see the white paper, what scientifically peer reviewed journals it is submitted to, and see if anyone else can duplicate their results and show that there is a measurable audible difference.

Good luck with that.

But out of curiosity, do you have a link? I need my laugh for the day.

--Ethan
post #5 of 72
post #6 of 72
Quote:
Originally Posted by Ratman View Post

Think about it...
......and clothes dry better........

Already been done!

http://www.monstercable.com/productdisplay.asp?pin=1727
post #7 of 72
oh my. I'm taking cover now before the bombs and grenades start flying.



dryer power cord, super dryer power cord.. oh my..... :S


Matt
post #8 of 72
I've always had the best luck measuring power cords in feet (and occasionally in inches). At a minimum the length of the power cord should be slightly greater than the distance from the component to the receptacle (again in feet or inches). Failure to achieve this minimum results in decidedly inferior sound reproduction from the component (although the noise floor can be simply amazing in these instances).
post #9 of 72
^^^ While a compelling argument, I feel obliged to note that the benefit of the low noise floor is somewhat offset by the low gain... Having to use L'Hopital's Rule to calculate SNR can be tricky for the average audiophile.
post #10 of 72
Quote:
Originally Posted by Steve_Vai_rules View Post

oh my. I'm taking cover now before the bombs and grenades start flying.



dryer power cord, super dryer power cord.. oh my..... :S


Matt

I'll have to admit - that is pretty hilarious. I had to wonder if it was a joke, actually. Looking closer, you can see they are mainly stressing that it is simply heavy duty, durable and the gold plated plug is most likely intended to resist corrosion in the humid environment that most dryers are situated in. I don't believe it is promoting better performance from the appliance.

Still... :/
post #11 of 72
Quote:

LOL, it's clear these guys have never heard of an oscilloscope, or a power supply filter capacitor for that matter.

--Ethan
post #12 of 72
Quote:
Originally Posted by m_vanmeter View Post

hundreds of feet of 12 and 14 gauge NM in-home wiring, held together with twisted compression fittings and these clowns are selling the miracle "last 6 feet". Ampacity and voltage drop are both directly related to wire gauge, which they don't mention for their products.

Speak for yourself. I installed super conducting cable all the way back to the power generator.
post #13 of 72
way to go "William"....no crappy 30 or 40 year old power company overhead aluminum aerial wiring for you. You have my upmost respect !
post #14 of 72
Quote:
Originally Posted by m_vanmeter View Post

hundreds of feet of 12 and 14 gauge NM in-home wiring, held together with twisted compression fittings and these clowns are selling the miracle "last 6 feet". Ampacity and voltage drop are both directly related to wire gauge, which they don't mention for their products.

I'm equally as dubious as everyone else, however,... what about eliminating all that miles and miles of wiring, start over with an w/ a re-gen product, then hand off to the over-priced 10/3 SJO cord?

just sayin....

Flamesuit within reach
post #15 of 72
Quote:
Originally Posted by William View Post

Speak for yourself. I installed super conducting cable all the way back to the power generator.

Humbug! The only way to true power nirvana is to generate your own with nothing to sap and impurify all of our precious bodily fluids.

http://www.youtube.com/watch?v=N1KvgtEnABY
post #16 of 72
Quote:
Originally Posted by FOH View Post

I'm equally as dubious as everyone else, however,... what about eliminating all that miles and miles of wiring, start over with an w/ a re-gen product, then hand off to the over-priced 10/3 SJO cord?

just sayin....

Flamesuit within reach

I have heard people argue, rather convincingly, that one should view the power cord as more of an extension of the power supply and not so much as an extension of the cord in the wall.

*looks for extra flamesuit*
post #17 of 72
Crappy power supply > "super" power cord > clean power feed(s) = no difference
Great power supply > stock power cord > clean power feed = no difference
Great power supply > "super" power cord > clean power feed = no difference
Any power supply > stock power cord > poor (unstable) power feed = problems that no esoteric power cord can remedy.

Passive power cords cannot "fix" or compliment power supplies nor can they "fix" poor power feeds.
post #18 of 72
Quote:
Originally Posted by centurymantra View Post

I have heard people argue, rather convincingly, that one should view the power cord as more of an extension of the power supply and not so much as an extension of the cord in the wall.

*looks for extra flamesuit*

You will never in a million years of tests be able to do a DBT and accurately pick a power cord. Spend that money on upgraded speakers and even you grandmother may hear the difference.
post #19 of 72
Just think how good the bass would've been if Entwistle, Jaco, or Stanley Clarke, had these cords on their gear with the live shows and studio work.

I bet Ray Brown is glad he doesn't have to worry with the upright and all.

If I only have one of these cords at the next show I mix, where do I use it?



Actually, I'd like to get my hands on whatever the best one of these are, and to some experimenting for myself. Some individuals that I'd never think would succumb to snake oil, are hedging their bets on this stuff, so I want to see for myself. Expectation bias and all....blah blah blah...

Thanks
post #20 of 72
Quote:
Originally Posted by centurymantra View Post

I have heard people argue, rather convincingly, that one should view the power cord as more of an extension of the power supply and not so much as an extension of the cord in the wall.

*looks for extra flamesuit*

people argue convincingly about many things, until you start to peel back the layers a bit...
post #21 of 72
Quote:
Originally Posted by ccotenj View Post

people argue convincingly about many things, until you start to peel back the layers a bit...

That applies to both the advocates and the naysayers
post #22 of 72
^^^

to a certain extent, i can't disagree with that...
post #23 of 72
Quote:
Originally Posted by FOH View Post

That applies to both the advocates and the naysayers

Not in this case. Here a manufacturer has claimed to have developed a new measurement technology/technique, so it is incumbent upon them to show it's efficacy, especially as they are not measuring anything new or unknown previously (current in a conductor). Until then it is an empty claim.
post #24 of 72
Quote:
Originally Posted by A9X-308 View Post

Not in this case. Here a manufacturer has claimed to have developed a new measurement technology/technique, so it is incumbent upon them to show it's efficacy, especially as they are not measuring anything new or unknown previously (current in a conductor). Until then it is an empty claim.

Could you hit me w/ a link as to the mfr. or piece you're refering to?
post #25 of 72
Quote:
Originally Posted by FOH View Post

Could you hit me w/ a link as to the mfr. or piece you're refering to?

What is this thread about?
post #26 of 72
I have successfully use that power cord with these wireless extension cord wow i'm in nirvana now

post #27 of 72
Quote:
Originally Posted by FOH View Post

Could you hit me w/ a link as to the mfr. or piece you're refering to?

You can work backwards from this:

http://www.shunyata.com/Content/DTCD-whitepaper.html

But don't expect much. Just fuzzy pictures and incomplete statements.
post #28 of 72
Quote:
Originally Posted by A9X-308 View Post

What is this thread about?

Gotcha.

I thought you were refering to another purveyor of this stuff.


Thanks
post #29 of 72
Just try reading the Shunyata page (Japanese for cable BS) and try to keep a straight face. I am most intrigued about the "residual " electricity in a cable.

How many types of "standard" black cable are there?
post #30 of 72
Their stated secret weapon, is their founders time in the NSA.....just sayin'



I'd like to hear their stuff. Regardless of the marketing bs, individuals such as Tom Jung and James Guthrie say they're on to something. Like to get my hands on them, tear them apart, see what they're about and make my own. If the specific geometry accounts for their supposed attributes, roll your own.

Thanks
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