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Thread: run all the wires together on a CAT5??

  1. #1
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    moahdib's Avatar
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    Post run all the wires together on a CAT5??

    I was wondering if insted of running TON's of RCA cables from head unit to carputer ( audio out, video out) and from head unit to my amp, not to mention the mouse, keyboard, GPS, IRMAN
    can I run the RCA wires in a cat 5 alltogether? just the sound and video...is this good insulation?
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  2. #2
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    There are likely to be problems with the video and sound. The first problem is that the Cat 5 cable is a different impedance to the video signal. Normally video runs on 75 Ohm coax and Cat 5 has a much higher impedance. This could result in ghosting(electrical signals reflecting inside the cable) in the video signal. There are adapters that allow the impedance of the video source to match Cat 5 cable. I know Jaycar electronics here in Australia sells these adapters(though they're not cheap). You aren't going to have a huge run so you may be okay. The other problem is that the audio and video signals are unbalanced. This means they will be very easily affected by electrical noise in the unshielded cat 5 cable.

    The only way to see if using it is acceptable is to try it. If there is too much noise or reflection you will need to use balanced differential drivers for the audio and video and it probably isn't worth the trouble.

    [ 07-22-2001: Message edited by: Technics ]

  3. #3
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    Use STP (Shielded Twisted pair) instead of UTP (unshielded)
    Clarion 200watt head unit w/ Aux in.
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  4. #4
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    Also, I actually use Cat5 for speaker wiring.
    It works great.
    I used 2 wires per an actual wire on the reciever (I just soldered the ends together).
    And the white outside blends with my wall.
    Clarion 200watt head unit w/ Aux in.
    Kicker 800watt 4 channel amp
    In a 96 Grand Prix SE.

  5. #5
    Retired Admin Aaron Cake's Avatar
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    Cool

    It shouldn't be a problem if it is just composite video. As for the audio, it should also work fine, but be sure to use wires in pairs for each channel.
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    Hmmm, I might be interested in using this technique to clean up my cables for a new install, can somebody maybe make up some simple diagrams as to how you might hook it up, both RCA audio and RCA video wise?
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  7. #7
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    I think I will leave out the video signal and just hook up all the audio signals.....
    just cut off both ends of the cat5 cable STP ( shielded twisted pair) and hook up your RCA plugs to each end...

    I have to hook up 3 pairs of rca's (line out) from my head unit to the amp and subwoofer, one pair from my pc to the head unit( aux in) so that's already 8 wires!or 4 pairs of RCA's...
    that's gonna be a headache!
    04 Acura TL w/ core2duo 2ghz laptop w/ 1gb RAM on a docking station.

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    http://www.arcdesigns.net/carpc/

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