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Cheap technique for multiple digital coax connections!

Discussion in 'Archived Threads 2001-2004' started by Jeff Kleist, Mar 19, 2002.

  1. Jeff Kleist

    Jeff Kleist Executive Producer

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    Given that I frown on spending $12 for a cable, and that my 2nd player only has coax out, I tried an experiment. I used a cheap Radio Shack RCA stereo to mono Y connector, and now both decks are connected and totally functional through 1 input. Works great, less filling [​IMG]
     
  2. Vasanth B

    Vasanth B Stunt Coordinator

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    Crude, but effective. However, I doubt the "Y" cable is a 75ohm so you may have audio dropout problems with one or both connections. If you do, you will have to find an alternate solution.
     
  3. Jeff Kleist

    Jeff Kleist Executive Producer

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    I've never had a dropout problem that wasn't "crud on the disc" related.
     
  4. Scooter

    Scooter Screenwriter

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    I'll go one better! I use these connectors I bought at a DOLLAR STORE!!!!! I use them in 2 places:

    To split off from the LNB of my C-Band sat to an MPEG reciever...true high def..looks wonderful!!!!

    Split down the line to the amps powering the LFE channel. Goes to the amp for two 18" bins and my array of Bass Shakers. As Jeff and others who have been in The ScootPlex2000 can attest to..there is no lack of bass or balls tingling sensation missing in my system!
     
  5. Patrick Sun

    Patrick Sun Moderator
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  6. Vince Maskeeper

    Vince Maskeeper Producer

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    One issue:

    Because of the way digital data is transmitted across analog carriers, often amplitude is a part of how the signal is read on the other end. I'm not 100% sure if this is a factor with DD or DTS, but I believe PCM carried on coax is decoded in 0's and 1's based, in part, on amplitude.

    By splitting the signal- you are effectively changing the impedance and voltage- and thus will have a big effect on the perception of amplitude, effecting the digital data.

    With DD and DTS, the data is packeted, so if this would have any effect- it would simply prevent it from working. However- with PCM type audio, you will most likely create a serious amplified amount of jitter in the signal. This may/may not manifest itself as seriously audible artifacts- but would have an impact on audio quality- if even subtly.

    Just a heads up.

    -V
     
  7. Bob McElfresh

    Bob McElfresh Producer

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    I dont really want you to do this, but I really wonder what might happen if you are watching one DVD player and power on the other with a disk in the tray.
    Perhaps you would discover a new form of "jitter"?[​IMG]
     
  8. Wayne A. Pflughaupt

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    Just thinking out loud, but I wonder if a regular switching device would work for this - like the kind you used to see a lot that allowed you to use 2-3 tape players with a single tape monitor loop...

    Regards,

    Wayne A. Pflughaupt
     
  9. Jeff Kleist

    Jeff Kleist Executive Producer

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    heh, that's why I DON'T power up the second player

    I have 6 or 7 PCM discs, and I AB'D analog and digital. Sounded identical to me. Possibly a more anal person(in that area) would find fault, but at least to my ears, the most important part it sounded equal.
     

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