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Hello,sorry for my english.
This is the email that i send to Mr.Joe Skubinski (Lucio Cadeddu and Nels Ferré of TNT-audio,and Editor/Editorial of Stereophile John Atkinson), after i bought the Digital AC and it's arrived today, 5 June 2009, at my home,in Pisa.
Dear Mr.Joe Skubinski,
i'm writing from Italy;
i'm an electronic engineer in Pisa and, mainly,i'm an audiophile.....or i think to be.
I love music and, of course, all the circuit on the electronic devices.
I'm an your BIG fan and i have:
2 Power AC cord,
1 Superconductor 2 XLR,
and,from today,
1 Digital AC.
I decided to buy your Digital AC after reading several enthusiastic reviews on web such as on Tntaudio and mainly Art Dudley on Stereophile when "he called Joe at JPS Labs" http://stereophile.com/artdudleylistening/817/index2.html .
So i call the shop "RANY HIFI", from Bologna, and they ask me 520 Euros for your digital ac(more than 600 US dollars!!!!!!!)
So i decided to buy on web from England.
Unfortunely the cable has the UK plug so i decided to change by myself with a schuko and i "open" the UK plug.
I expected to find a filter(i supposed, inductor and capacitor....such as 2x0,8mH and 1x0,1uF or something of similar) inside the plug such as it's written in many reviews... but i'm impressed.........nothing of nothing.......only a fuse(Bussmann 13A).
So i came back to read again and again the several reviews and always the same thing......"the cable has filter in plug and IEC".
Well......i decided to open the other side.....the iec........and.........what i read?.....EMC EUPEN!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
and this code on the cable:
AWM II 60°C 300V FT1 C(..)US E218937 AWM Style20740 3G1mm2 ICC VW-1
If you want (but i know that you know what i'm speaking of) i have the photos and i could send to you.
The men who work for you,have tried to delete the writing on the two sides of the IEC plug but it can be seen with a photo and zoom in.
I was disappointed about this question (i bought an EMC EUPEN cable remarked by JPS) but i'm an electronic engineer and i know how the industries work in the world.
Please,don't tell me that i'm wrong because i can attached the photos of my JPS Digital AC, when you want to see my "open" cable.
The thing that i wish to know is where is (are) the filter(s)?:
there is a filter in plug and in IEC or the filter is only in IEC (2x2.2nF)?
The last question.......about your web site....
why there is always written nothing about the cables(only the awg of some power cord)?
there is always written only "aluminoy" and "the best in the world".
Why don't you put some photos of the inside of your cables(a section) and the material that you use to build the cable?
Why i can always know about your material (dielectric i.e.) from the reviewers?
Who tell me that their words are correct?
Why don't you write that cables have Teflon or PTFE or PVC or air?
Why you put a graph about the damping factor http://www.jpslabs.com/alumiloy.shtml and don't write what it is and why it's there....in the page of aluminoy.
Best regards
Gaetano Piccolo
I forgot to ask to Mr.Joe Skubinski why he tells that the dielectric is teflon, when on Eupen web site there is written (and there is a photo with a section) PVC insulation. Look at page 4 in the EUPEN pdf catalogue http://www.eupen.com/weimages/download_catalog/emc.pdf
If Eupen makes for JPS this cable under JPS specifics,why the iec plug have the writing "EMC EUPEN"?
There is no need to try to delete the Eupen label because i think that if this cable are made under JPS specifics, the Eupen label must not be there....so i think that dielectric are PVC....not Teflon.
The Digital AC sounds VERY VERY VERY VERY VERY GOOD.....but this is another story....i think.
I don't know if i can put a link with my photos.
So,contact me if anyone wants to see the photos of my JPS Digital AC in the particular.
Regards
Gaetano
Follow Ups:
I'm another italian audiophile and another owner of JPS Digital cable too.
This is a terrible fake or best a dirty trick. Cable sounds great but his price is outrageous since JPS use an Eupen cable without any difference or work on it.
JPS is dead for me
lot of music, not only sounds
This is the answer of Mr. Joe at my first email.....
From: jpslabs@mac.com
To: telespallagat@hotmail.com
Subject: JPS Labs...
Date: Fri, 5 Jun 2009 15:37:00 -0400
Hello Gaetano,
Sorry to hear you are having difficulties with a JPS product. We try to please everyone but as you know it is a difficult task.
We have nothing to hide. The UK version of that AC cord does not have a network in the wall plug. The very low quantities required for that country does not allow us to manufacture a custom UK version of that cord, so we do our best with what is available. We did however have a nice heavy gold plate UK wall plug made for it. Had you contacted JPS prior to your purchase we could have told you that these cords are not interchangeable.
Two possibilities are to return the cord in whatever condition it is in for a full refund from Audio Salon, or to use it with your choice of euro plug. It will still be quite effective for your digital front end, just as effective as the UK version if you use a nice Euro plug.
Exhibiting the inside of cables on a website... for you and I being curious engineers it may be ok, but 99.9% of our customers know little about the manufacture of wire and cable, so it would be of little use to them and therefore would not help us to promote JPS. What I do in cable design is a very specialized field of engineering which I had to learn myself during the last 20 years, much understanding of materials and how they relate to sound reproduction had to be learned. The subtle details within the cable and conductors would not be understood nor heard by a picture or specifications- that is my job and is what people ultimately pay for- To listen.
Thank you, Gaetano!
Enjoy the weekend... Joe
In a third email Joe said to me:
Hi Gaetano,
The schuko version is a moulded plug with a network built-in, as is the US version.
Take care... Joe
Dear Joe........sorry........but you look like Berlusconi.
In Italy we had: Leonardo,Galileo,Brunelleschi,Michelangelo and more others.
Now we have:Carlo Rubbia,Rita Levi di Montalcini and others.
But we have Berlusconi,too.
When he answers to the questions,he tells what he wants but nothing about the real questions,such as you have done with me.
You could be a great italian politics or a fine philosopher in the world.
You tell me that "The very low quantities required for that country does not allow us to manufacture a custom UK version of that cord, so we do our best with what is available".
And again:"The schuko version is a moulded plug with a network built-in, as is the US version."
So the UK version isn't a real JPS digital AC!!!!!!
i'm impressed........why on your web site there is written nothing about this?
About this:"Exhibiting the inside of cables on a website... for you and I being curious engineers it may be ok, but 99.9% of our customers know little about the manufacture of wire and cable, so it would be of little use to them and therefore would not help us to promote JPS".
We want to know,for example, if the dielectric is air,teflon,PTFE, or PVC.
We pay much money for your cables and i think that we have the right to know the material......not the secret,the snake oil,of course.
I know that in some cables you use the PVC insulation(Digital AC,Analog AC).
These cables have recieved enthusiastic reviews and they sound very good.
Don't you think that saying that the dielectric is PVC you could subvert the theory that PVC is a cancer for the hi end cables?
An example taken from TNT-audio:
"An aspect that could be relevant is the propagation velocity of the signal through the cable.
This is a physical characteristic of the cable which depends on its electrical parameters. Roughly speaking, it depends on the square root of the inverse of K, the dielectric constant of the insulation of the cable. To name a few examples, PVC insulation has a high dielectricity, hence it causes the velocity propagation to be lower (since it depends on the inverse of K). PE is better than PVC while PTFE/Teflon is better than PE.
This parameter can BE precisely measured in terms of % over the speed of light c. A propagation velocity of 80% c (velocity factor, actually) means the signal transits at 80% of the speed of light (300,000 km/sec). This characteristic varies greatly from one cable to another. For example, PVC allows the signal to travel at 50% of the speed of light, PE at 65.9%, PP at 69%, PTFE (Teflon) at 70% and PE foam at 80%.
The real problem with PVC isn't the delay it adds to the signal. Actually its dielectric constant slightly varies with frequency and hence varies propagation speed. This could be a problem."
However, many cable makers(such as Cardas,Kimber,Audioquest,Shunyata etc etc) put on their web site the tipology of the construction of their cables, photos and dielectric material.....and the cable theory.
Sorry again Joe,
I know that you have a Nissan GT-R......a beautiful expensive car.........a question........and if under the label Nissan there was a film of polyolefin and under this film there was written Volkswagen Golf, and the men who works for Nissan have tried to delete the Volkswagen lebel, what you'd think?
Use the search function for "JPS + Eupen" (without " " marks). One inmate did compare the JPS cord against a Eupen cord on his CD player. See the link for his summary.
As I understand it, the Eupen cord contains RF suppression materials in the cord construction, and not as separate filter elements.
Sorry Al Sekela
but i haven't compare the sound of JPS with Eupen.....
I see an Eupen in my JPS.....but an EMC Eupen not an Audusa Eupen.
EMC Eupen has inside two network;one in the plug and one in the iec.
The men who work for JPS,have try to delete the label on iec where is written:" EMC EUPEN".
But the label "EMC EUPEN" is yet on my cable.
I purchased Eupen AC cord by the meter when it was being praised here and on TNT, back in 2004.
Its RF filtering is an outer layer of ferrite powder mixed with a plasticizer. I found the cable severely limited in dynamics and got rid of it.
You can emulate the same effect by installiong one large ferrite clamp on each end of your PCs.
I have learned a lesson: not to trust blindly what reviewers write.
By the way TNT needs a revamp and a general cleanup, some pages are several years old, still praising cables that are poor by today's standards.
The digital ac is an EMC Eupen but this one http://www.emceupen.com/nema.html
IMU14 and you can see it in the photos on the right....you can buy it for 59 euro in Europe.
I'm an italian electronic engineer and i have studied at University of Pisa everything.
The effect of only two ferrite clamps aren't the same of the effect of ferrite powder mixed with a plasticizer in this cable.
Because this cable have a little thickness of ferrite in all the lenght of the cable,So the signal is not so attenuated such as with ferrite clamps.
When i wrote to Mr. Joe i send the same mail to Lucio Cadeddu and Neil Ferre of TNT-audio and to the editor of Stereophile.
You can read the email and the incredible answers of Joe here http://www.audioasylum.com/audio/cables/messages/14/141586.html
Lucio Cadeddu answered me that when they redacted their reviews several years old,they cannot "open" the cable.
Yes....i know that many pages are several years old but their politic consist in "no advertising, banners, readers' support and the like" ,such as it's written on their web page.
What does it mean?This one....
If one factory send their electronics or cables for a review and their products do nothing at the hi end systems, tntaudio tells that those products do nothing at the hi end systems.
So many big factories don't send their products to tntaudio but only the little factories do it.
Anyway i think that TNT needs a revamp and a general cleanup.
But the question here is another....
I have opened the JPS digital ac and it's the same cable of the IMU 14.......
The men who work for JPS tried to delete the diamond with the label "EMC EUPEN" printed on the IEC but it's there again.
But what is more impressive it's :
1)the way of Joe to speak about his customers.(read the answer of Joe in the second post)
2)that the UK version of the JPS digital ac isn't a JPS digital ac because
"The very low quantities required for that country does not allow us to manufacture a custom UK version of that cord, so we do our best with what is available"....the UK version haven't a network built-in into the plug while the schuko and USA version have it!!!!!!!!!
3)that on JPS web site there is written nothing about point 2,so an english man (or an italian man) thinks to buy a JPS digital AC in UK while this isn't a JPS digital ac.
About the MAIN thing that inside the JPS digital ac there's an IMU14 with the logo "EMC EUPEN" semideleted, i asked to Mr Joe JPS ( http://www.audioasylum.com/audio/cables/messages/14/141594.html ):
"Sorry again Joe,
I know that you have a Nissan GT-R......a beautiful expensive car.........a question........and if under the label Nissan there was a film of polyolefin and under this film there was written Volkswagen Golf, and the men who works for Nissan have tried to delete the Volkswagen lebel, what you'd think?"
He never replied.......sigh
Regards
Gaetano
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