What actually makes component cables so good??

Discussion in 'Archived Threads 2001-2004' started by Rod Melotte, Mar 14, 2002.

  1. Rod Melotte

    Rod Melotte Stunt Coordinator

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    What makes them better then regular cables. Is it the actual material that are made up off?
     
  2. Bob McElfresh

    Bob McElfresh Producer

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    Well, first off coax tends to be judged/rated by:
    - What frequency it starts to roll off
    - How steep the roll off is
    So from low-frequency to High in your system you have:
    Subwoofer
    Audio
    RF/CATV
    Composite Video
    Component Video
    HD/Progressive Video
    DSS signals (digital)
    So ordinary video tops out at about 4 Mhz, HD video signals go up to 35 Mhz.
    The other part of a cable is the connector.
    The higher the frequency, the more sensitive the signals are to something called "Impedence Mismatch". Take a great, 75 ohm coax cable and slap a generic RCA plug on the end and you get reflections/attenuation in the signal.
    So the higher end cables tend to come with very precise, well made RCA plugs that maintain the 75 ohm impedence.
    Prices:
    The "Good" coax from Belden, 1694A, runs about $0.30/ft. So thats about $1/foot for 3 cables.
    The Good coax from Canare, V3-5CFB (3 cables in 1 bundle) runs about $1.18/ft.
    The wonderful Canare true 75 ohm RCA plugs run about $3 each.
    This is what you would need to make a Premium component cable set capable of handling HD signals.
    There is a great site that shows you how easy it is to make your own cables by one of our members: http://www.bus.ucf.edu/cwhite/theater/theater.htm
    Click on the "DIY Projects" link, then on "Audio/Video Cables" for the details.
     

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