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CAT 5 Shield vs. Unshielded???

Discussion in 'Tech Talk' started by G23lover, Nov 16, 2005.

  1. G23lover

    G23lover Holy Shooter

    I'm doing an install on some in-ear monitors for our musicians and I am suppose to use either Cat-5E or Cat-6 UNshielded cable. Problem is, the helpful morons at Home Depot nor LOWES does not know the difference between unshielded or shielded and neither do I. It doesnt say on the box that it is shielded or unshielded so how do I tell the difference???

    Thanks in advance for the data

    Rev. Craig
     
  2. 0100010

    0100010 Millennium Member

    562
    0
    Sep 15, 1999
    DFW
    On the box/label it should be listed as either UTP or STP. Unsheiled or Sheilded Twisted Pair, most UTP will be cheap, less than 20 cents a foot, while STP is usually over 30 cents a foot.

    To tell the difference, STP will have a wrapping of aluminum foil under the main PVC sheath, while UTP will just be a PVC sheath over the copper pairs.
     


  3. jamskatelake

    jamskatelake

    22
    0
    Aug 25, 2005
    Tavares, FL
    shielded helps protect the integrity of the signal from EMI and RFI. If I were doing your install, I'd go with shielded. my $.02

    Why are you using network cable for sound?

    dont know if you know this, but if you have to cross AC power with signal, try to cross at a 90 degree angle to reduce the above
     
  4. kAr

    kAr Netware Rocks!

    98
    0
    Oct 17, 2001
    Mesa AZ
    Unless you like assembling annoying connectors, I'd suggest just getting longish patch cables from Frys or another large electronics retailer. I assume this in an Aviom sytem that we are talking about?
     
  5. johnstrr

    johnstrr In the Garden

    51
    0
    Oct 15, 2005
    Yeah, I'd go sheilded... especially for audio. Side note: keep away from flouresent lights, they are big EM producers.
     
  6. jamskatelake

    jamskatelake

    22
    0
    Aug 25, 2005
    Tavares, FL
    I didn't know companies were using network cable for audio. I'd still use Shielded.
     
  7. G23lover

    G23lover Holy Shooter

    Yes, I'm putting in an aviom system, they say NOT to use shielded cat 5. Hence I was trying to find the difference. Thanks for the clarification guys. I knew I could count on you.

    One last question. I am hooking up a shure in-ear monitor to the aviom distributor and can either use balanced 1/4" or XLR (that mic connection type) connections which one is better???? advantages or disadvantages of either????

    Thanks again for the comments

    Rev. Craig
     
  8. kAr

    kAr Netware Rocks!

    98
    0
    Oct 17, 2001
    Mesa AZ
    Using the balanced XLR connections are almost always a better idea, but why are you using the shure in ear monitor stuff? Uness you are going wireless you should be able to just plug your Shure ear buds into the A-16 mixers.
    [​IMG]
    There should be a headphone jack on the A-16 near the top right.
    [​IMG]

    As far as the shielded versus unshielded Cat5 goes, it won't work properly unless you ground the shield on one and only one end. I've been installing some in a theate retrofit, but that is a lot harsher envioronment than what you are looking at. For the Aviom, I wouldn't bother unless you were across the street from a commercial radio or television transmission tower. If you go that route your going to need several sizes of shrink tube and some other hardware. If you are running a long line of Cat5 from your front of house sound mix position, it might be worthwhile to put in all the extra effort if you are running the Cat5 parallel with power wires.