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macbook air 5.1 output minidisplay port to hdmi discovery

post #1 of 4
12/22/11 at 11:52am
Thread Starter 
There are plenty of threads with sound problems connecting macs with mini display port to hdmi. When connecting my 2011 air I have been able to consistently get stereo sound with the Kanex, Moshi, and the 10$ amazon cable. I have been using makemkv and preserving the 5.1 options, but when connecting to my panasonic vt30 then the optical out to my Integra dtr 8.4 (with no hdmi) I can not get the receiver to play any DD or DTS. In my other room i have a Onkyo tx-sr604 with hdmi. Now when I connect the air directly to the receiver with the mini display-hdmi and hdmi out to the tv I get dts 5.1.

My xbox, playstation, and basic cable all output DD with no problem on the Integra. Anyone have any thoughts on this?
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post #2 of 4
1/2/12 at 10:59am
If you connect HDMI to your TV and then output optical out, you will only get stereo, all TVs are like that AFAIK.

It's a security "feature" that's supposed to prevent piracy (not sure how, but that's how things are). Nothing you can do.
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post #3 of 4
1/3/12 at 9:00am
Thread Starter 
wow. i guess i figured that out the long way. thanks for confirming!
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post #4 of 4
1/5/12 at 10:31am
Both of my TVs are like that. My Philips will output Dolby Digital via its coax output, but only using it's built-in TV tuner, which doesn't involve HDMI.

Dennis
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