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interconnect cable confusion

Discussion in 'Archived Threads 2001-2004' started by John Meringolo, May 9, 2002.

  1. John Meringolo

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    I am a physician with such a passion for audio that for years now I have had a side business -- "DR JOHN'S AUDIO." My question is this;

    What is the difference b/w these three; coaxial digital audio cable

    subwoofer cable , coaxial video cable

    Thanks for your help

    DR JOHN
     
  2. Jedd

    Jedd Second Unit

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  3. Bob McElfresh

    Bob McElfresh Producer

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    Well, all 3 are Coaxial cables. If you cut one, it would look just like your CATV coax.

    The Video and Coaxial Digital cables should all be made with something called "75 Ohms Impedence" cable. The electronics on either side expect this for proper signal transmission.

    (You can get coax cable in 50/75/110 and 300 ohms impedence).

    The Video and Coaxial Cable are also a bit sensitive to having a good RCA plug on the ends.

    A subwoofer cable is just a long coax cable with RCA plugs on each end. Because of the low frequency (120 hz) and the low band-width needed (20-120 hz) almost any good coax cable will work.

    A subwoofer cable seems to be sensitive to a tight-fitting RCA connector. This might explain why people hear a difference when they switch.

    Hope this helps.
     

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