[linux-audio-user] cabling question: crosstalk between audio and cat5 ethernet?

Anahata anahata at treewind.co.uk
Sat Feb 7 08:10:04 EST 2004

On Sat, Feb 07, 2004 at 12:45:03PM +0100, Joern Nettingsmeier wrote:

> the idea is to run an eight-way symmetric audio multicore (shielded 
> pairs and an outer foil shield as well) along with 4x cat5 s/stp 
> cables carrying 10/100/1000baseTX ethernet in the same cable duct 
> over a length of about 15-20 meters.
> will this lead to problems in the audio signal?

Twisted pair ethernet is a balanced signal so should radiate little. If
your audio system is balanced too that will help.

With three shields between the audio and the ethernet twisted pair I
doubt if you'll experience problems. You don't mention whether the audio
cable will be carrying microphone signals or only line level - that
makes a big difference!

If you're really paranoid you could use star-quad audio cable. That has
four cores instead of two and much better inference rejection than
twisted pair.

anahata at treewind.co.uk -+- http://www.treewind.co.uk
Home: 01638 720444         Mob: 07976 263827

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