If you're experiencing audio delay issues, read this


Userlevel 2
Badge
I've been living with lip sync issues (audio behind the video) since I got my Playbar about a year ago but I finally decided to do something about it. After multiple conversations with Sonos support and the LG's support people (they kept blaming each other for the audio delay), I decided to email Sonos' CEO about the issue.

After a few hours, I got a reply back from him, CCing a team manager who was going to look into the issue. We scheduled a call and he had me send various diagnostics to him. He said that the engineering team was going to investigate and get back to me.

A week later, I got an update. He told that they are still working on the issue. He also said that only one other person had reported the same issue (I assume that means that only one other person with an LG TV). So, if you're having audio delay issues and you've tried all other troubleshooting, reach out to Sonos support and have them look into it. If it helps you might mention my reference number, which has already been escalated: 171023-002526.

Keep in mind that my setup is pretty straight forward (LG C6 OLED TV connected directly to the Playbar via Optical, audio playing from the built-in apps) and every single thing LG and Sonos suggested, including going into the TV's service menu and changing things there.

I know there are multiple post on the topic so hopefully we can solve at least some of the issues causing audio delay.

360 replies

Sonos can only play the audio as quickly as it is given the data. If your TV is delaying the audio for some reason, there isn’t much Sonos can do to control that.
Same problem here. Sonos Beam connected to a HiSense tv via the HDMI (ARC) port. I'm watching now and have the video is about a half second faster than the audio. I thought maybe it was due to not having it hooked up to a higher-end television, but after seeing all of the different brands listed here I'm assuming that's not the case.

I love the features of the Sonos, but when the sync gets this bad I find myself wishing I'd chosen another product.
For those of you who have the LG B6 or C6 and have been having the delay issue, there is new firmware available on the Korean LG site. They usually release first in Korea and it takes months if not longer for it to make it to North America. I've installed on my C6 and am seeing very positive results. Both PCM and DD 5.1 look in sync on multiple sources (Tivo, Apple TV, Xbox).

From the release notes, it specifically mentions an audio fix:: "Improved watch / play game's game subtitles and video / audio time mismatch (05.30.70)"

If you use Chrome and navigate to the Korea LG support site it will offer to translate which makes things easier to find. The firmware itself is not specific to Korea and works fine on a North American model.

Link: https://www.lgservice.co.kr/download/selectSearchView.do#none

For C6 filename is webOS3.0_M16_F16_75UH6850_93XX_96XX_05.30.70.zip
For B6 filename is webOS3.0_K2L_UH79_87_05.30.75.zip
I have a Sonos beam connected to a Sony KD-65XG7003 via HDMI (ARC) port.
I have really noticeable audio lag when using streaming services eg Netflix. Anyone else having similar and can advise on how to eliminate it?
Thanks
I just set up LG C9 65” with the playbar and the audio synch was pretty bad (audio slower than video). I found a setting that seemed to help. On the LG optical out menu I changed it from “auto” to “pass through” and it seemed to be a big help. I also set my xfinity box to Dolby 5.1 and my Apple TV to Dolby 5.1. I am still testing it out a bit during the playbar return period. But it seems like pass through may have worked for now.

if not I will try the hdmi switch next although I would rather not deal with that if it can be avoided.

Would be interested to know if the audio pass through setting works for others.
Hello, I have a Sony 65xf9005 with a Beam and two Play 1s connected using the HDMI-arc input. Delay is terrible when using the inbuilt Prime app but noticeable with everything else. Just wondering if anyone else has the same setup and has managed to find a settings combination which works? Thanks in advance.
Badge
This problem has been going on long enough ive read post 2 years old new tvs have come and gone firmware updates and yet this problem still exists 1 second delay.
I saved hard purchase my new tv ( Samsung) sonos beam 2 sonos 1 over £3000 and yet the dreaded lip sync problem still exists ive tried allsorts to no avail. running my hdmi lead from my beam in to the optical connector straight in to sky q box
This works for sky viewing but if i want to use the apps on my tv no good if i want to watch a station on my tv no good
I may aswell of set fire to £ 3000
Would i recomend sonos yes but not for surround sound connected to what seems to be all up to date TVs
Very very disappointed
I don’t have an LG but my Sony 950g was having these same issues. I switched my sound to pcm on my tv and it has seemed to fix this issue so far.
Badge +3
My set up is an LG55C8 with a Sonos sound beam and two play 1's connected to the TV via ARC and HDMI all okay on Freesat TV and when my MAG322 is connected for my iptv and also fine on the TV's in built iptv with my paid for subscription service
But my issue is once I have connected my brand new 4K Firestick TV I then get lip sync issues with the firestick on live broadcasts of iptv
The Firestick has been tested on my other TV and works with no noticeable lip sync issues but as soon as its loaded onto the C8 I get the issue. I have tried switching the sound to pcm and stereo but the lip sync issue does not go away.
I have the same iptv provider on the Firestick and on the Mag and the inbuilt iptv app on the C8
I have tried everything but can only work out that it is some issue with the TV sound set up and not the actual Firestick or Sonos.
Just a quick update This morning I unplugged everything and just ran the Firestick through HDMI 1 with the TV sound only and the lip sync was even worse.
The Firestick has been tested independently and is working perfectly so I can only assume that there is a compatibility issue between the C8 and the Firestick 4K settings
That sounds really frustrating, Prodan, thanks for sharing. It looks like that case you mentioned is open with one of our most senior technicians, so you're in good hands. Let me know if I can help with anything else, and hopefully we can get all your questions answered soon. Talk to you soon!

Keith is there any progress on this case AT ALL? I too am living with the delay and am about ready to get rid of my entire Sonos collection for something else as the audio delay is absolutely terrible. The company is obviously VERY aware of the issue but there have been a whole lot of “We are working on it” responses with zero results.
I've been living with lip sync issues (audio behind the video) since I got my Playbar about a year ago but I finally decided to do something about it. After multiple conversations with Sonos support and the LG's support people (they kept blaming each other for the audio delay), I decided to email Sonos' CEO about the issue.

After a few hours, I got a reply back from him, CCing a team manager who was going to look into the issue. We scheduled a call and he had me send various diagnostics to him. He said that the engineering team was going to investigate and get back to me.

A week later, I got an update. He told that they are still working on the issue. He also said that only one other person had reported the same issue (I assume that means that only one other person with an LG TV). So, if you're having audio delay issues and you've tried all other troubleshooting, reach out to Sonos support and have them look into it. If it helps you might mention my reference number, which has already been escalated: 171023-002526.

Keep in mind that my setup is pretty straight forward (LG C6 OLED TV connected directly to the Playbar via Optical, audio playing from the built-in apps) and every single thing LG and Sonos suggested, including going into the TV's service menu and changing things there.

I know there are multiple post on the topic so hopefully we can solve at least some of the issues causing audio delay.


Prodan, have you heard anything further regarding your case? I have an LGOLEDB7A and am living with delay on a $2000.00 SONOS surround sound system and am quite frustrated.

Do you still have Patrick Spence’s email? I would like to send him an email as well. Spent over $4000.00 on a TV and Audio experience that is frustrating me on a daily basis. I think we all deserve answers at this point.
Just finished reading through the whole thread. Same lip sync issues here on a Panasonic VIERA TX-58DX902.

Sky in DD, Xbox one X both have issues, however the Apple TV 4k is the closest with hardly any lip sync sometimes? Will play ok with itune purchases, but can vary dramatically when using infuse.

Have opted to order the https://www.amazon.co.uk/dp/B076XV1LVS/ref=pe_3187911_185740111_TE_item as advised by NeilAngels above. Will let you know how I get on with it.
HI all

Just bought the beam. Got it set up on my Panasonic DX750B via ARC. I mainly use my 4K firestick for movies etc.

I am having lip sync problems when the TV is set output bitstream but totally fine with PCM. Has anyone fixed this issue without buying extra equipment as the beam is expensive enough.

I read on av forums that the only real difference between bitstream and PCM is where the processing is done. Like if you select bitstream on the TV then it is the TV that does the work but if you select PCM then the beam does the processing and the sound should be the same. Is this true?

I have a few days window to return the beam if necessary but it sounds good and I'd rather fix the stupid sync problems.

Thanks.

Now I had the same problem. I had 4 play three’s and recently got a connect amp. I looked more and more into having sound from my Panasonic tv to my speakers, so invested in a beam.

Now on the sound from my Sky Q going to my tv then to the beam via arc was spot on, on the normal setting. As soon as I switched to Dolby on Sky Q, I was getting delays via the hdmi arc on the tv, and also the optical output on the tv, yet from the optical from the sky to the beam was spot on.

Frustrated as I wanted control the beam, and also sound from PS4 and NAS, I kept looking into it and funny enough a customer where I worked suggested the tv wasn’t getting the sound quick enough from the sky to tv when set to Dolby, I only had £1 hdmi wires from pound shop, so I went out and spent £20 on two sets of wires, which said supported up to 4K video and Dolby, Dolby Atmos etc in sound, so used one cable to tv from sky, and other from tv arc to beam, and hey presto! No more sound delay.

Next time someone says all hdmi are the same, and your been ripped off for expensive ones, just try them and take them back if no change.

Check your hdmi wires and maybe test some 4K hdmi to see if it improves.
Badge
Yes connected an opticle lead direct from sky q box to the beam no lipsync problems but this defears the object cant use any apps off the tv or even use the tv as a tv now its just a monitor for watching sky q
Fez.

So you've connected your sky box straight to the beam and now have no lip sync problems?
Badge
I've got lipsync problems on my samsung q8
Tv with sonos beam and sky q with hdmi pluged in to hdmi arc on tv tried all settings new hdmi lead to no avail so I've ended up using a optical lead pluged directly in to sky q box and beam not ideal but aslong as only watching sky it works not happy after investing over £3000 in new technology and it doesn't work together
Might email Panasonic but probably won't hear from them within the return window for the beam.

Not planning to buy a splitter as these things should work without needing extra hardware but I appreciate that it's worked for others.

If I did get a splitter then surely connecting the firestick to that instead of the TV would fix it.

Gonna do some more testing tomorrow and will post back if I improve this.
Most of my testing is on my firestick on Netflix or prime. Only used the virgin box a little bit. It's a v5 box which has a Dolby output setting which I've enabled.
Even the suggested audio splitter will not resolve the Amazon fire-stick Apps delay issue, in the same way it does not resolve any TV in-built Apps.. so the only thing you can do is either...
  1. Speak to Panasonic support and see if they have any suggestions. The Sonos Beam is just a speaker and it can only play the audio when it receives it and the Panasonic is not delivering that quickly enough through HDMI-ARC...
  2. On some TV’s you may find the optical port will work a little quicker and so try switching the Beam to optical using the provided adapter. Obviously you will lose the HDMI-CEC control if you go down that route, but that’s relatively minor if it solves the lip-sync issue for DD 5.1 output.
Most of my testing is on my firestick on Netflix or prime. Only used the virgin box a little bit. It's a v5 box which has a Dolby output setting which I've enabled.
Ronnieuk,

Most VMedia TiVo TV Channels are PCM stereo anyway... so surround sound is only really useful for channel 204 Netflix and the few HD Film channels.
Thanks for the reply.

Got no enhancements enabled and buying more equipment is crazy for the price we've all paid for our TVs and soundbars.

For now I'm just using pcm as theres no delay. Been reading all over the web that the soundbar will process the signal anyway so there's no need for the TV to do it.
Thanks. Have not got any processing options selected. On the Panasonic they all grey out when a soundbar is connected. When you say that with bitstream the TV is processing the signal so it's own speakers can play it then does it really matter if its not the TV speakers we are using? Isn't it better to let the sonos process the signal itself? Or are you saying that the pcm signal itself is garbage and the beam will just be playing stereo?

I watched some scenes from Kong skull island and both settings sounded pretty identical. I'm no audiophile but I do have a good ear and have returned speakers and headsets in the past for tiny annoyances. But with these between pcm and bitstream on the TV I am not hearing much if any difference. Is the beam using the pcm signal and processing it just as good as the TV?

Was thinking of trying through optical. Could it maybe cut out some hdmi delay?

Enable the TV internal speakers first and then turn off the TV's audio enhancements and then switch to the HDMI-ARC, or Optical, output. You should not assume the features are disabled because they are greyed out when you switchover to using the external (Beam) speaker.

Also get latest TV firmware and perhaps speak to the Panasonic support desk, who maybe able to assist you further.

If all fails then use an audio splitter and the Beams optical adapter to remedy the audio delays.
Thanks. Have not got any processing options selected. On the Panasonic they all grey out when a soundbar is connected. When you say that with bitstream the TV is processing the signal so it's own speakers can play it then does it really matter if its not the TV speakers we are using? Isn't it better to let the sonos process the signal itself? Or are you saying that the pcm signal itself is garbage and the beam will just be playing stereo?

I watched some scenes from Kong skull island and both settings sounded pretty identical. I'm no audiophile but I do have a good ear and have returned speakers and headsets in the past for tiny annoyances. But with these between pcm and bitstream on the TV I am not hearing much if any difference. Is the beam using the pcm signal and processing it just as good as the TV?

Was thinking of trying through optical. Could it maybe cut out some hdmi delay?
No, that's not really true. In both cases, the TV is doing processing, it's just the type of processing the TV is doing. In the case of PCM, it's almost none, since the signal is stereo. In the case of Dolby Digital, it's trying to do lots of other things, including processing the signal so it can be used on the TV's speakers. One thing you should do with your TV is to turn off any audio options that look like they're going to modify the audio in any way. The less "messing" with the signal that happens in the TV's circuitry, the better for lipsync issues.

Many of the people have ended up getting an HDMI switch, which is external to the TV, in order to strip out the audio before it actually reaches the TV. They're relatively inexpensive, depending on what features you want. You can check out local prices for you on Amazon, although that's not the only place to purchase them. But it is certainly a good way to do research.
HI all

Just bought the beam. Got it set up on my Panasonic DX750B via ARC. I mainly use my 4K firestick for movies etc.

I am having lip sync problems when the TV is set output bitstream but totally fine with PCM. Has anyone fixed this issue without buying extra equipment as the beam is expensive enough.

I read on av forums that the only real difference between bitstream and PCM is where the processing is done. Like if you select bitstream on the TV then it is the TV that does the work but if you select PCM then the beam does the processing and the sound should be the same. Is this true?

I have a few days window to return the beam if necessary but it sounds good and I'd rather fix the stupid sync problems.

Thanks.

Reply