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Tivo Roamio getting sound thru speakers rather than TV

Discussion in 'TiVo Help Center' started by vscary, Jun 19, 2014.

  1. vscary

    vscary New Member

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    Jun 18, 2014
    Just purchased a Roamio base model. Have it hooked up to our HDTV via HDMI. Have an old-style receiver (analog?). Trying to figure out how to run this through our receiver so that we get sound thru our stereo speakers instead of thru the TV.
     
  2. worachj

    worachj Active Member

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    Oct 13, 2006
    Eagan, MN
    On the back of the Roamio Basic there is a yellow RCA hole and it is for composite output. It is only good for standard definition picture and analog audio. You can buy a composite breakout cable and hookup the analog audio to you receiver.

    You need a composite breakout cable like the one TiVo sells here.
    https://www.tivo.com/shop/detail/av-cable
     
  3. telemark

    telemark New Member

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    Nov 12, 2013
    B) There's also an optical audio output jack on the back of the Roamio.

    Some stereos have an input for this or you can get a DAC (digital analog convertor).

    C) You might also check if your TV has an audio output, which has the advantage of supporting the other devices hooked up to your TV.
     
  4. unitron

    unitron Active Member

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    Apr 28, 2006
    semi-coastal NC
    That's not an RCA (or phono--short for phonograph) jack, that's a 1/8th inch phone (short for telephone) jack (sometimes called a mini-phone jack), the baby brother to the 1/4 inch phone jacks which were used in the switchboards you see in old movies with operators plugging in cables to connect calls, and which are the things on electric guitars and amplifiers into which one plugs connecting cables.



    That particular jack is of the tip-ring-ring-sleeve variety if I'm not mistaken, which allows it to correspond to the yellow (composite video) and white and red (left and right audio) RCA jacks found on stuff like VCRs, with a common ground for all three signals.


    So a cable with a 1/8th TRRS plug on one end and three RCA plugs on the other would be needed to extract audio if it can't be or isn't either sent or received via the HDMI connector.


    When video was added to the tip-ring-sleeve stereo miniplugs (such as found on more recent headphone cords), there was no longer universal agreement on which connector would carry which signal or which would be the common ground, so one needs to do one's homework when obtaining one.
     
  5. Diana Collins

    Diana Collins Well-Known Member TCF Club

    2,642
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    Aug 21, 2002
    New York...
    FYI, the TiVo breakout cables are wired:

    Component cable - sleeve is ground, ring 1 (nearest the cable) is red, ring 2 is blue, tip is green.

    Composite cable - sleeve is ground, ring 1 is right audio, ring 2 is left audio and tip is video
     
  6. telemark

    telemark New Member

    1,544
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    Nov 12, 2013
    This would mean a typical 1/8" to 2x RCA cable (L/R or white/red) could be used for just Audio Out.

    Someone want to test this?
     
  7. vscary

    vscary New Member

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    Jun 18, 2014
    You guys rock. The solution was using a Toslink Digital Audio Cable to connect the TiVo to the receiver. Now we have awesome sound, and the TiVo doesn't get returned to Best Buy!!! Really appreciate your help...
     
  8. unitron

    unitron Active Member

    16,389
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    Apr 28, 2006
    semi-coastal NC
    Don't need to test it to know that it won't work.

    The plug on the non-RCA plug end of the type of cable about which you're talking has a tip, which is supposed to be the left channel, one ring, which is supposed to be the right channel, and all the rest, back up to the shell (which is the part by which you're supposed to hold it when plugging and unplugging) is the sleeve, which is common ground.

    Using this type of cable plugged into the Roamio's composite jack would send composite video to the left channel input of your A/V receiver*, left audio to the right channel input, and would short the right channel output to ground**.


    *which would, at best, produce some rather unpleasant sounds.


    **if you're fortunate, this wouldn't draw enough current to do any damage.
     
  9. telemark

    telemark New Member

    1,544
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    Nov 12, 2013
    You're right. I wrongly assumed it was an extended length 4 ring, which I guess isn't that common of a connector.

    To make my original idea work, someone would have to not insert a 3 ring all the way. I tested this works electrically, but it's not that stable because it can't be bumped too far.
     
  10. sloan

    sloan New Member

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    Feb 13, 2003
    Raleigh, NC
    if you search shopping on google .com, and search for

    tivi mini cable

    You can find some non tivo . com sources...

    I found this on ebay

    3.5mm Mini AV TV Male to 3RCA Female M/F Audio Video Cable Stereo Adapter Cord

    and

    TiVo Mini 3ft 3.5mm AUX Auxilairy to RCA Composite Yellow White Red Cable

    It took me a while to find the correct "search phrase"...thus my post here.
     
  11. unitron

    unitron Active Member

    16,389
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    Apr 28, 2006
    semi-coastal NC
    One should be sure to see if the word "Mini" in those listings refers to the plug being a "mini" phone plug (1/8" rather than 1/4"), or if it refers specifically to the TiVo Mini and the specific pinout of the AV jack on it.

    When video was added to the stereo audio mini-phone plug cables, it apparently never occurred to the industry to get together on a standard.

    I understand Apple has one that doesn't even have ground in the correct (i.e., traditional for the last 50 or so years) location.
     
  12. sloan

    sloan New Member

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    Feb 13, 2003
    Raleigh, NC

    Good advice.

    I'm hoping "TiVo Mini 3ft 3.5mm AUX Auxilairy to RCA Composite Yellow White Red Cable" is the right one !
     
  13. unitron

    unitron Active Member

    16,389
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    Apr 28, 2006
    semi-coastal NC
    With them saying "TiVo Mini" instead of just "Mini", you'd have very good grounds for complaint, refund, etc. if the pinout isn't what it needs to be for the TiVo Mini.

    The one that just says Mini is too ambiguous.
     

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