Subject: Re: [linux-audio-user] cabling question: crosstalk between audio and cat5 ethernet?
From: Joern Nettingsmeier (nettings_AT_folkwang-hochschule.de)
Date: Sat Feb 07 2004 - 23:31:19 EET
Anahata wrote:
> 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!
mostly microphone unfortunately.
> 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.
hmm. i wonder how that works? anyway, four-core cables are probably
too expensive for me.
-- "I never use EQ, never, never, never. I previously used to use mic positioning but I've even given up on that too." - Jezar on http://www.audiomelody.comJörn Nettingsmeier Kurfürstenstr 49, 45138 Essen, Germany http://spunk.dnsalias.org (my server) http://www.linuxaudiodev.org (Linux Audio Developers)
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