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HDMI ARC ?

Discussion in 'Home Theater Audio' started by SayWhat?, Jul 7, 2011.

  1. Jul 7, 2011 #1 of 27
    SayWhat?

    SayWhat? Know Nothing

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    Audio Return Channel, is this something that is only found in TVs from the last year or so? Does it have to be specified on the TV output or is it likely to be there on any HDMI connection?

    My Toshiba TV does not have it indicated.

    My new Panasonic HT unit does.

    I have an optical cable coming, so I'll be covered either way I think.
     
  2. Jul 7, 2011 #2 of 27
    spartanstew

    spartanstew Dry as a bone

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    It needs to be specified. It's part of the HDMI 1.4 standards, so it would only be on items that have been released since then (mid-2009).

    Additionally, just because a device has HDMI 1.4 (or 1.4a) doesn't mean it will have ARC, as it's an optional part of the standard.

    Both your display and the A/V receiver need to be capable of ARC in order to take advantage of it (and really the only use is if your display has apps)
     
  3. Jul 7, 2011 #3 of 27
    SayWhat?

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    They say it feeds the TV audio back to the amp so you don't need the optical or RCA cables.

    No biggie, I should have it covered.

    I think I got the TV in Dec '09.
     
  4. Jul 7, 2011 #4 of 27
    spartanstew

    spartanstew Dry as a bone

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    What audio do you need to send from the TV? Apps? OTA?
     
  5. Jul 7, 2011 #5 of 27
    SayWhat?

    SayWhat? Know Nothing

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    OTA


    O'tay? :p

    (Can't remember who said that, maybe one of Eddie Murphy's characters)
     
  6. Jul 8, 2011 #6 of 27
    spartanstew

    spartanstew Dry as a bone

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    It was Eddie Murphy playing BuckWheat from the Little Rascals.
     
  7. Jul 8, 2011 #7 of 27
    dmspen

    dmspen Hall Of Fame DBSTalk Club

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    The newer Panny TVs have Netflix and such built into the TV. I had this same question some time ago. My TV has ARC but my receiver doesn't. I traipsed all the way into the garage for an optical cable, finagled it through my TV stand, connected another HDMI from the TV to the rx, again snaking my arm through the TV stand, and bingo! Viera/Netflix through the receiver!
     
  8. Jul 8, 2011 #8 of 27
    SayWhat?

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    That brings up another question. Panasonci uses the term Viera while Toshiba uses Regza-Link, but they both reference CEC. Are they the same thing? Will they talk to each other? Or are they separate protocols?
     
  9. Jul 8, 2011 #9 of 27
    spartanstew

    spartanstew Dry as a bone

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    Any CEC product will talk to another CEC product regardless of manufacturer.
     
  10. Rich

    Rich DBSTalk Club DBSTalk Club

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    Do you get 5.1 sound thru that or just linear PCM?

    Rich
     
  11. spartanstew

    spartanstew Dry as a bone

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    CEC has nothing to do with audio.
     
  12. Rich

    Rich DBSTalk Club DBSTalk Club

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    I was talking about the optical out port on the back of the new Net TVs. I have no Net TVs, but all my plasmas have an optical port on the back panel and they only output linear PCM.

    Rich
     
  13. Rich

    Rich DBSTalk Club DBSTalk Club

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    All seven of my Panny plasma have the optical out port on the back of the TVs. But they only output linear PCM. I'm trying to find out whether the new Net connected TVs will output 5.1 from those same optical outputs.

    Rich
     
  14. RASCAL01

    RASCAL01 Godfather

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    I only use optical and it outputs 5.1, same for my current TV and my old one.
     
  15. spartanstew

    spartanstew Dry as a bone

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    If it has ARC, it will be at least DD (but that's an HDMI connection).

    With other TV's it's hit and miss. The vast majority of displays that have an optical out are limited to linear PCM, as you've experienced, although there are a few exceptions - as Rascal has experienced.
     
  16. SayWhat?

    SayWhat? Know Nothing

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    Userguide on my Toshi says the Optical output can be set for PCM or DD, but it doesn't say 5.1 specifically if there's a difference.
     
  17. spartanstew

    spartanstew Dry as a bone

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    Yes, there could be. DD could mean DD2.0
     
  18. CCarncross

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    My Panny outputs DD if watching an OTA channel via the built-in tuner in the tv.
     
  19. Rich

    Rich DBSTalk Club DBSTalk Club

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    I don't use OTA. I've tried all my seven Pannys and none of them put out anything but linear PCM. Even the one I just bought a few months ago. Doesn't really matter to me, I have plenty of 5.1 options and three optical switchers, but I've been kinda curious about the Net ready sets. They must all put out 5.1 from the optical port on the back of the set, no?

    Rich
     
  20. spartanstew

    spartanstew Dry as a bone

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    Yes, most ouput DD (5.1) with OTA, but linear with everything else.

    I would think the sets with Apps should put out 5.1, but knowing manufacturers, it's still probably hit and miss. They just figure people are watching Netflix with the TV speakers.
     

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