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HDMI or Optical digital audio cable???

6525 Views 10 Replies Latest reply: Jan 28, 2011 11:43 AM by tmartine RSS
Dman3284 Level 1 Level 1 (0 points)
Currently Being Moderated
Jan 24, 2011 6:42 PM
I have an ATV2 with cable box, Samsung sound bar w/blu ray DVD player, and a Samsung led tv. I have HDMI cables and also a optical digital audio cable from my cable box to the sound bar. My tv sound is fine but when I switch over to the ATV2 the tv sound remains on and no sound from the ATV2. I can't figure out what to do.

Message was edited by: Dman3284
iMac, Mac OS X (10.5.8)
  • Alley_Cat Level 6 Level 6 (16,635 points)
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    Jan 24, 2011 11:14 PM (in response to Dman3284)
    How is your AppleTVsound supposed to be getting to the soundbar? If the ATV is connected to TV via HDMI audio is going to TV.

    If optical is connected from cable box to soundbar I can't see how ATV audio is going to be relayed to the soundbar if there's no direct AppleTV connection to it, ot at least a reciever switching things.
    Mac OS X (10.5.8)
  • Alley_Cat Level 6 Level 6 (16,635 points)
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    Jan 25, 2011 11:34 AM (in response to Dman3284)
    Although you're connected to a switch, the AppleTV audio will not be relayed to the cable box and on to the soundbar via the cable box optical.

    If the soundbar has a separate optical input run another cable from AppleTV to that, alternatively analogue out from TV to soundbar.

    AC
    Mac OS X (10.5.8)
  • Chenks Level 5 Level 5 (7,420 points)
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    Jan 25, 2011 12:13 PM (in response to Dman3284)
    Dman3284 wrote:
    Shouldn't the HDMI cables carry the sound along with the video? Do I really need the optical digital audio cable at all?


    yes they do, but you don't have your kit connected up so that it would do it.

    if you wanted to use the HDMI to carry the audio you would need to connect the appletv direct to the soundbar - as it is just now you aren't doing that.
     MBP 2.4GHz  Mac Mini G4  2 x AppleTV  iPhone4 32GB  iPod Classic 80GB, Mac OS X (10.6.6)
  • newagemac Level 2 Level 2 (240 points)
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    Jan 26, 2011 8:53 PM (in response to Dman3284)
    Why are you using optical cables? Your Apple TV and cable box should be connected directly to the soundbar with HDMI. Then you connect the soundbar to your TV with HDMI. HDMI carries both audio and video in the highest quality possible and has higher capabilities than optical. There is no need for optical at all unless you have run out of HDMI inputs on your soundbar or something.
    Unibody Macbook Pro | 2010 Mac Mini | iPhone 4 | Apple TV 2G, Mac OS X (10.6.5)
  • tgibbs Level 1 Level 1 (70 points)
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    Jan 27, 2011 2:11 PM (in response to newagemac)
    I don't think there is any difference in what kind of audio can be carried by optical vs HDMI
    Cube, Mac Pro, MacBook Pro, Mac Mini, Mac OS X (10.5.7)
  • newagemac Level 2 Level 2 (240 points)
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    Jan 28, 2011 2:17 AM (in response to tgibbs)
    Not on the Apple TV, true. But I was talking about in general. Lossless audio formats like those that come on Blu Ray discs like DTS-HD Master Audio and Dolby TrueHD do not work through optical. They only work through HDMI. I was just pointing out that HDMI is a preferred method of connecting over optical. If you have the ability to connect with HDMI, there really isn't much of a reason to use optical.
    Unibody Macbook Pro | 2010 Mac Mini | iPhone 4 | Apple TV 2G, Mac OS X (10.6.5)
  • tmartine Level 3 Level 3 (955 points)
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    Jan 28, 2011 11:43 AM (in response to Dman3284)
    Dman3284 - draw a little diagram of your set up and you'll quickly see where you've gone wrong..

    *you don't need ANY optical cables at all with your setup*.. all you need is one more HDMI cable.. forget about the optical cable.. un attach it.. leave everything the way you have it and just attach an HDMI out from the sound bar to the TV and you are done.. everything will be everything..
    2.0GHz MacMini Core2Duo 4GB/120GB, Mac OS X (10.6.4), Dual 2GHz G5 (10.5.8), 40GB AppleTV, AEGigE, 64GB iPad

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