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Go Back   Head-Fi: Covering Headphones, Earphones and Portable Audio > Equipment Forums > Computer Audio
Reload this Page Length of USB cable matter?

Computer Audio Discussion of computers as source components, sound cards, USB DACs, media servers, etc.

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Old 10-22-2007, 05:28 PM   #1 (permalink)
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Default Length of USB cable matter?
Hey guys,

Does the length of the USB cable matter when it comes to SQ and noise? I want to put my DAC on the other side of the room from my computer (next to my big comfy chair) and I figured it'd be better to run the digital signal farther and keep the analog signal shorter. Am I correct in my thinking? Should I make sure it had ferrite cores on either end? It's probably be about 12ft long or so.

Thanks,
paul

EDIT: also this is in regards to a Silverstone EB01 DAC which is powered by the USB cable. Do you forsee an problems there?
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Old 10-22-2007, 06:10 PM   #2 (permalink)
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No problems at all.

Your right, it's always better to extend the digital section than the analog.

USB can handle 12 feet without hassle.


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Old 10-22-2007, 06:14 PM   #3 (permalink)
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Thanks...that's what I thought. Any insight to the 'powering the DAC' issue?
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Old 10-22-2007, 06:21 PM   #4 (permalink)
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Originally Posted by Bjornboy81 View Post
Hey guys,

It's probably be about 12ft long or so.
5m (16') is the limit per the USB spec.
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Old 10-22-2007, 07:08 PM   #5 (permalink)
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I've used 10m cables before with no problem.
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Old 10-22-2007, 07:37 PM   #6 (permalink)
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nice ****
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Old 10-22-2007, 07:38 PM   #7 (permalink)
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haha...anyways, thanks for the replies guys!
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Old 10-22-2007, 08:15 PM   #8 (permalink)
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no problem as this makes my HS post, 1.5k
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Old 10-23-2007, 04:50 AM   #9 (permalink)
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Originally Posted by Bjornboy81 View Post
Thanks...that's what I thought. Any insight to the 'powering the DAC' issue?
It will work fine, but IMHO it is always better if you can source power from somewhere other than your computer.
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Old 10-23-2007, 12:19 PM   #10 (permalink)
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Originally Posted by Maniac View Post
It will work fine, but IMHO it is always better if you can source power from somewhere other than your computer.
I totally agree. however that's how this DAC is designed...to run off the USB power.

maybe I'll dive into the PCB and add in my own wall powered PS instead of the USB boosted supply that's on the board....
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