USB cable with a external run for power/ground

[yoghurtlidlicker]

Hello guys,

 

What I'm looking for is USB cable with a external run for power/ground.

DATA and POWER is separated.

 

does such a thing exist?

 

all the best,

Adam

 

 

[DanRubin]

Some of the Ridge Street Audio USB cables have that feature.

 

[yoghurtlidlicker]

I can not find any information...

 

A.

 

[timztunz]

As indicated by DanRubin the Ridge Street Audio Alethias USB cable is manufactured in this manner.

 

[DanRubin]

For some reason, they do not feature their USB cables on the Web site, though this link will give you pricing and a link to email for more info:

 

http://home.comcast.net/~ridgestreetaudio/Pricing.html

 

[DanH]

If you don't mind dealing with an individual instead of a company, you should send a message to jkeny. He made such a USB cable for me but it hasn't arrived yet, so I can't tell you how it sounds. His modified HiFace, which I have, is well built so the construction of the cable should be okay. It's supposed to arrive next week, and if you're interested I can tell you more about it then. In preparation for its arrival I went to Radio Shack yesterday and bought 4x1.2V batteries and a holder for them. In my experience battery-power provides real benefit over a noisy PC environment.

 

[yoghurtlidlicker]

yeah,

John told me that he dont do them anymore...

actually I ordered one with HiFace mod but he refund it.

 

[jkeny]

That's correct, I'm not doing them anymore. Too much hassle & too many issues from my side & from users side. Not really viable for me (I also only charged €20 & not $300 - maybe that's my problem ).

 

But it's an easy modification to a USB cable for anybody that wants to do it themselves.

 

Dan's was the last one I sent out & that was because I forgot it in my original shipment to him. Thanks for the support Danh

 

Oops, I just realised that I'm probably not supposed to mention any of this as it might be considered self promotion & the forum police could bust me & have it deleted (or worse!). Oh well!

 

[yoghurtlidlicker]

yeah forum police car is on its way!!!

 

[jkeny]

Thanks, I flushed everything down the toilet - even my oscilloscope! Don't tell me it was a false alarm

 

[yoghurtlidlicker]

you need a good plumber then!

 

anyway I will try to mod usb cable by myself...

 

[jkeny]

Good for you - that's the way. As your nickname suggests - lick the lid of life

 

[ggking7]

Adam, would you describe why you need such a cable? I may have a solution for you.

 

[yoghurtlidlicker]

Such a mod allows me to connect external 5V supply rather than the noisy 5V coming from the computer. Actually it isn’t necessary but it will improve sonic.

 

I need it for my upcoming Jkeny Hiface Mod...

 

 

thanks,

A.

 

[jkeny]

Yes, correct yoghurt - some improvement can be realised depending on the quality of the computer PS Vs the quality of the externally supplied PS.

 

It's the most obvious place to start from when looking at USB cables for audio - carrying both power & signals on the one cable is not a great idea for audio, I would suggest. Once these functions are separated one can then test various signal carrying wires & wiring configurations but I'm not sure there's much improvement to be had here.

 

So people, save yourself $300 & do this modification yourself or send me $300 & I'll do it for you

 

Edit: yoghurtlidlicker what name would I know you as so I can tell you if your modified Hiface has already gone out?

 

[yoghurtlidlicker]

it used to be 20 euro ;P, you are deliciously evil )))))

 

you know my name you!

 

A.

 

[jkeny]

OK you made me search my emails to find you, Adam (I don't look at the email addresses so I didn't know)

 

Yours is in a box in front of me at the moment & going out in the post tomorrow.

 

Now I'm out of here as I hear the forum police car siren ))))))

 

[ggking7]

I've got just the thing. Use any USB cable, but attach it to one of these:

 

http://diyparadise.com/shop/index.php?main_page=product_info&cPath=3&products_id=124

 

It's based on the ADUM4160 USB isolator board. Attach 12V SLA battery power and another short USB cable or just a USB gender changer on the other side and you've got a perfectly isolated USB DAC, better than any USB cable. I'm setting this up right now too.

 

[yoghurtlidlicker]

yes you are right but it is not compatible with USB 2.0 HiSpeed (480Mbits/second). It won't work with HiFace (((

 

[ggking7]

Ah yes, I've read that it doesn't work with HiFace.