ATV3 6.0 Optical audio distortion

Like many others, the audio is distorted streamed from iTunes via Home Sharing through the ATV3 to my receiver using Optical out. Both Wireless and Ethernet are the same distortion. All types of stream eg MP3 & WAV.
Optical cable, ATV3 are brand new.
I updated the software first time I turned it on to 6.0. I have turned Sound Effects Off, Dolby Off, Output to Auto from 16 bit.
Is there any fix from Apple?
Many thanks for any help.

Thanks for your question.
I am only using it for audio playback. So I have not used HDMI for audio and will not be.
I have read of several others having exactly the same issue with distorted audio on Optical Out. But so far noone seems to have got to the cause or cure, apart from suggesting the things I mentioned that I have tried to no effect.
Very frustrating.

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ATV3 not using optical audio with mirroring

MacBook Pro to the Apple TV mirroring works fine for video but not audio. The audio is from the TV speakers with mirroring but the ATV is connected to my amp and speakers via the optical audio output on the ATV3. The ATV outputs to the amp / tuner / receiver all day for the radio app in the ATV but with mirroring it sends audio to the worthless TV speakers. Any idea how to convince the ATV to send the audio to the amp with mirroring on?

So I guess MP3/AAC files are not configured to use all 5 speakers?
Yes, this is the case. They are probably just stereo files (two audio channels). It depends on your receiver/speakers just how a stereo file plays through, there may be a setting to make stereo files come through all the speakers anyway. But, the audio coming out of your Mac is just going to be stereo with those kinds of files, your audio system may be able to handle the channels differently.
-Doug

ATV2 audio distorted

Greetings from Los Angeles,
I do tech consulting for a living with an emphasis on high-end multi-media installations, so this has me scratching my head - considering this is on the low-end of the spectrum for what I do!
Here's the scenario. A Mac Mini (2009 generation) serves as an HTPC with the following configuration:
1. Dish Network receiver HDMI OUT ----> Samsung HDTV HDMI IN1.
2. Apple TV2 HDMI OUT ----> Samsung HDTV HDMI IN2.
3. Samsung HDTV analog audio RCA outs ----> Mac Mini Line in
4. LineIn app in pass-thru mode passes all audio from Line In directly to the combo Headphone/Optical audio out minijack which feeds a Logitech Z5300 5.1 surround setup. No Dolby surround in this configuration, but we listen to music more than anything, so this is totally acceptable.
Internal audio (iTunes, youtube, Netflix, etc) on the Mini goes directly out to Logitech speakers and sounds fantastic.
TV audio (Dish Network) sounds fantastic. This works great for everything (except ATV2)!
Almost all Audio from ATV2 sounds distorted. Especially internet radio. It's completely unlistenable.
Called apple, they thought it was a bad HDMI cable. So I obliged and swapped it for (another) brand new one with the same result. Next, I tried to do a factory reset. Got as far as downloading and almost 99% of the installation. Just as it reached the end of the installation progress bar, it said that the update had failed. Took it back and exchanged it for another one...
Got it home... Unwrapped the 2nd one... Guess what? SAME problem. Soooooo Disappointed! C'mon Apple, don't let me down!
This leads me to a question and a theory. The question: is anyone else experiencing distorted audio from the new ATV2? And the theory: ATV2 is sending +10dB (Professional line level) instead of -4dB which is the standard for consumer gear. Assuming this is not a hardware issue, then apple should be able to push an update that configures the audio as -4dB.
Thanks and Discuss.
Anjeleno

I've been having a similar problem, although I found a rather odd (and inconvenient) solution. I originally had my ATV2 connected both via optical to a Peachtree Nova integrated amp and via HDMI to a 42" Philips LCD TV (which is connected to the Nova via coax). With this setup, I was getting static and popping over both inputs. Now check this out:
First, like others, I tried running the optical directly to my Macbook: no static.
Intrigued, I switched over to HDMI while the optical was still plugged into my Macbook. The static came back.
Thinking the HDMI cable might be the culprit, I unplugged the HDMI cable from the back of my TV and plugged the optical cable back into the ATV2. Still static.
Well, I had my answer. I unplugged the optical cable from the ATV2, and plugged the HDMI cable back into the TV. Bingo. No static.
So, apparently, just having the optical cable connected to the ATV2, even if there's no signal running into it, causes the ATV2 to emit static across both outputs.
I assume this comes down to a faulty optical output, but it seems pretty weird that this would affect the HDMI output as well. In any case, I guess I need to scrap my optical connection and just go with the HDMI for now. Which is unfortunate, since I'd much prefer to not have to keep the television on all the time.

Optical audio keeps dropping out

Hi
i have an ATV3 with optical audio to my amp (no HDMI inputs) and HDMI direct to TV. The audio will work for a few minutes and then drop out - if i leave the TV on (HDMI) it never drops out. Sometimes it will work for a few seconds, sometimes a few hours but never consistently. In attempts to fix i have replaced the optical cable, updated software (via mac not WIFI) but still no luck.
Any suggestions?
thanks

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How to make my computer send all the audio through optical audio cable instead of headphone jack?

Howdy,
To listen to online radios or CD's played from my computer, I used to connect the computer to my home entertainment system from the computer's headphone jack to the AUX port on my home entertainment system.
I now wanted to get better sound and purchased the optical audio cable. However, I don't know how to tell my computer to send the audio signal to the home entertainmeny system through the optical digital cable rather than through the headphone jack. If I just unplug the cable connecting the headphone jack and the AUX port and only have the PC and the system connected with the optical audio cable, I don't hear any sounds. I suspect the computer isn't sending any data through the optical audio port. I'm not able to find how I can adjust the settings on my computer so that from now all sounds are output through the optical audio.
1) I'd like to do that mainly for my HP desktop (configuration below) and any advice on how to do that would be appreciated.
2) I also have a HP laptop (configuration below) and was wondering if that would be doable too (even though it doesn't appear to have a audio out, but it has HDMI out - can one convert it to optical audio?
Thanks in advance!
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This question was solved.
View Solution.

Hello @_goma,
Welcome to the HP Forums, I hope you enjoy your experience!
I have read your post on how you are looking to make your computer send all the audio through an optical audio cable instead of the headphone jack, and I would be happy to assist you in this matter!
To configure your desktop to enable the optical audio cable, I recommend following the steps below:
Step 1. Click the Windows Key Button on your desktop
Step 2. Type "Control Panel"
Step 3. Select "Control Panel" in the top right-hand corner
Step 4. Select Sound
Step 5. Under the Playback tab, right-click the white area below the devices available
Step 6. Select "Show Disabled" and "Show Disconnected Devices"
Step 7. Connect your Optical Audio Cable
Step 8. Select your Optical Audio Cable as the default device and click "Enable"
Since it is not possible to convert the HDMI out to audio out on your notebook computer, it is unfortunate that the notebook is not able to connect with an optical audio cord.
Please re-post with the results of your troubleshooting, and I look forward to your reply!
Regards
MechPilot
I work on behalf of HP
Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
Click the “Kudos, Thumbs Up" on the right to say “Thanks” for helping!

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C Nelson wrote:
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Hi guys,
I'm having a little trouble getting my Mac mini to play audio via optical out through my Sony HT-IS100 home theatre system.
Below is my correspondence with Sony UK so far listing the problem and current connections. Their reply indicates that the problem is the way the sound is output from the mini. Does anybody know what the default output audio type is via optical?
It is worth noting the problem occurs through iTunes, front row, safari, quick time etc.
I also tried using my MacBook Pro and the same problem occurred. Does anyone have any ideas, or are Macs just not compatible with my setup via optical audio?
Thanks in advance,
Jib
Here is the link to the manual referenced by Sony http://www.superfi.co.uk/extras/Sony/sonyhtis100manual.pdf
=================================================
Hi there,
I'm having trouble getting the sound from my MacMini to output through my recently purchased HT-IS100 system.
The MacMini is being connected via a TOS optical cable for the sound and a HDMI cable for the picture to the SAT inputs on the HT-IS100.
The picture is working fine, as mentioned the audio is not. The HT-IS100 is working fine for all other inputs.
The optical cable has been checked and is working when used for other components, as has the optical out port on the MacMini.
When the HT-IS100 is turned on from standby, the OPT and PCM light are on and I get audio for about a second before '2.0 channel' is displayed and the audio disappears.
Have looked through all trouble shooting and online guides and nothing to help me with it. I also tried calling my local sony centre with no luck there either. All components are working so am assuming it is just a setting that needs to be changed.
Can you please advise on how to fix the problem.
Many thanks.
Dear Mr ------
Thank you for your recent e-mail received on 11/03/2010 03.20 PM.
I am pleased to read that you are the owner of a HT-IS100, but sorry to learn of the issue you are experiencing.
Having investigated your enquiry, it appears that your MacMini is outputting a sound signal that is not supported by the HT-IS100. For example, the maximum PCM input for the Home Theatre System is 96khz. The Home Theatre System will automatically select the best decoding mode for the sound that is being received, so it would not be a setting on the Theatre System that needs to be changed. As this is the case, I would suggest that you view the supported sound specifications in the instruction manual and ensure that your MacMini is outputting a supported signal. Please refer to page 76 of the manual for the specifications.
I hope this information is of some assistance. Thank you for your enquiry.
Yours sincerely
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Just to update this in case anyone can still help, or if anyone searches a similar topic.
Latest reply from Sony
Dear Mr.....
Thank you for your reply.
If the SAT optical port works when connected to another product, this still indicates that it is an issue somewhere in the Mac settings causing the problem. It is possible that interference in the HDMI cable is causing the Home Theatre System to listen to sound coming from the HDMI port rather than the optical port. I would suggest that you try connecting the Mac just with optical and no HDMI, to see if the issue still occurs. If the problem is resolved, I would recommend that you use another HDMI cable.
If the same issue occurs, this indicates that is a Mac setting somewhere causing the sound output to be incompatible. In this case, I would recommend that you contact Mac for assistance.
I hope this information is of some assistance. Thank you for your enquiry.
Yours sincerely
Customer Information Centre
SONY UNITED KINGDOM LTD
So, with HDMI unplugged the audio works through the optical input to the HT-IS100 amp. With a HDMI (all cables working that I tried) plugged in, the picture comes through but no audio for that channel.
So there must be something outputting through the HDMI from the mac mini to make the amp try to take the audio from there instead of the optical. Tried all TV output settings on the mac and same problem across the board. Does anyone know if there is anything else I can try, or is it time to just accept this combo does not work as it should?
Since the last post, I discovered that the sliders in the midi setup should be grey due to control being shifted to the amp, so all OK there.
Thanks in advance if anyone has any help.

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ATV3 6.0 Optical audio distortion

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