If you're experiencing audio delay issues, read this

Hi everyone.

Like most people, i wish i had read this thread prior to purchasing my Beam.

I have an LG OLED B8, it's about a month old, and i find that when i connect my Beam through ARC, all external devices are generating about 250ms of audio lag behind the video when those devices send Dolby Digital 5.1. I've tested a PS3, AppleTV (2nd gen), and Xbox One X. I'm getting a PS4 Pro next week so i could test that too, but honestly they all have exactly the same amount of lag, so i think there is no point.

I've also changed the audio settings on all of those devices to send a Stereo signal instead of Dolby, and watched as lag improved to near perfect on all 3 devices. However, I don't think it sounds as good. I'm not looking for perfection here (although it would be nice), but 250ms is just too much IMO. If it were sub-100ms, then i'd probably not be writing this post.

All internal apps on the TV, such as Netflix, Youtube, etc. output to the Beam via ARC with no delay.

I'm inclined to believe that it is an LG problem... but if that's true, wouldn't ALL soundbars and receivers experience the same delay over ARC? wouldn't that render OLED ARC basically borked??? Yes, I could get an optical splitter, but the main draw of this Sonos Beam was it's ease of use and the ability to use ARC seamlessly. That has not been the case.

I'm driven mostly out of curiosity at this point to find out what the heck is going on. Sadly, the Beam is going to have to go back. I like the sound, but for $400, I don't think that amount of lag over ARC is acceptable. My preference is to buy a new device that will not have any lag over ARC, but does such a device exist???? I'll do some research, but please let me know if you have found a solution that works.

If anyone else has had issues with ExternalDeviceSendingDolbyDigital5.1->OLED->ARC->Sonos Beam, and found that another device didn't cause any audio delay, I would love to know. Also, I'll report back with any new info i'm able to gather.

Hi everyone.

Like most people, i wish i had read this thread prior to purchasing my Beam.

I have an LG OLED B8, it's about a month old, and i find that when i connect my Beam through ARC, all external devices are generating about 250ms of audio lag behind the video when those devices send Dolby Digital 5.1. I've tested a PS3, AppleTV (2nd gen), and Xbox One X. I'm getting a PS4 Pro next week so i could test that too, but honestly they all have exactly the same amount of lag, so i think there is no point.

I've also changed the audio settings on all of those devices to send a Stereo signal instead of Dolby, and watched as lag improved to near perfect on all 3 devices. However, I don't think it sounds as good. I'm not looking for perfection here (although it would be nice), but 250ms is just too much IMO. If it were sub-100ms, then i'd probably not be writing this post.

All internal apps on the TV, such as Netflix, Youtube, etc. output to the Beam via ARC with no delay.

I'm inclined to believe that it is an LG problem... but if that's true, wouldn't ALL soundbars and receivers experience the same delay over ARC? wouldn't that render OLED ARC basically borked??? Yes, I could get an optical splitter, but the main draw of this Sonos Beam was it's ease of use and the ability to use ARC seamlessly. That has not been the case.

I'm driven mostly out of curiosity at this point to find out what the heck is going on. Sadly, the Beam is going to have to go back. I like the sound, but for $400, I don't think that amount of lag over ARC is acceptable. My preference is to buy a new device that will not have any lag over ARC, but does such a device exist???? I'll do some research, but please let me know if you have found a solution that works.

If anyone else has had issues with ExternalDeviceSendingDolbyDigital5.1->OLED->ARC->Sonos Beam, and found that another device didn't cause any audio delay, I would love to know. Also, I'll report back with any new info i'm able to gather.

If you want to investigate further try audio directly from source. The beam has optical and HDMI? Send the picture to the TV and run audio directly from source to Sonos. I had the same lipsync issue with Amazon PrimeVideo internal app for 5.1 content on the TV as source as well. First episode of Man in the high castle confirmed the issue for me.

For my B7V the TV is the source of the problem. A Sony FullHD 40" model does not show any of the issues with the same setup. Best of luck!

If you want to investigate further try audio directly from source. The beam has optical and HDMI? Send the picture to the TV and run audio directly from source to Sonos. I had the same lipsync issue with Amazon PrimeVideo internal app for 5.1 content on the TV as source as well. First episode of Man in the high castle confirmed the issue for me.

For my B7V the TV is the source of the problem. A Sony FullHD 40" model does not show any of the issues with the same setup. Best of luck!

Yep. I did do that by routing optical directly from my Xbox to the Beam. The lag was fixed. But therein lies the problem... Beam as one input. I have multiple devices. I’d have to buy a switch thus negating the convenience of the Beam. I’d be better off buying a soundbar or receiver with multiple inputs.

Hi all - unfortunately, I'm back again with a lip sync issue between my Sonos system (Playbase + Sonos 1 surrounds) and an LG C8 TV. I use my Apple TV 4k for all content, and it seems to work well for most services (Netflix, HBO, Hulu). But I recently purchased some content through iTunes (movie and TV series), and there is a serious sync issue (audio is behind the video).

Bruce had previously recommended me the Flexson HDMI switch: https://www.amazon.com/Flexson-3-Input-Converter-PLAYBAR-PLAYBASE/dp/B06W5QJW9T but in an Amazon review, someone is saying it doesn't support 4K content (no HDCP 2.2 support).

I'd really like to be able to watch the highest quality content I can (including 4K content) - so wanted to see if someone could recommend a good HDMI switch for me that might be able to resolve this sync issue. (Is it true that there is a built-in delay of somewhere between 25-35ms with Sonos - is it possible I'm just noticing this delay, and if so, is there a way to remove that?)

Thanks!

Have you checked on Amazon for such a device?

Hi all - unfortunately, I'm back again with a lip sync issue between my Sonos system (Playbase + Sonos 1 surrounds) and an LG C8 TV. I use my Apple TV 4k for all content, and it seems to work well for most services (Netflix, HBO, Hulu). But I recently purchased some content through iTunes (movie and TV series), and there is a serious sync issue (audio is behind the video).

Bruce had previously recommended me the Flexson HDMI switch: https://www.amazon.com/Flexson-3-Input-Converter-PLAYBAR-PLAYBASE/dp/B06W5QJW9T but in an Amazon review, someone is saying it doesn't support 4K content (no HDCP 2.2 support).

I'd really like to be able to watch the highest quality content I can (including 4K content) - so wanted to see if someone could recommend a good HDMI switch for me that might be able to resolve this sync issue. (Is it true that there is a built-in delay of somewhere between 25-35ms with Sonos - is it possible I'm just noticing this delay, and if so, is there a way to remove that?)

Thanks!
thats odd, I have a 4k apple tv and its the only thing that I dont get audio delay from? I even have itunes movies and shows, but I am using the beam over arc with a 2017 65" b7 oled. Did you set your apple tv to force dolby digital?

Hi all - unfortunately, I'm back again with a lip sync issue between my Sonos system (Playbase + Sonos 1 surrounds) and an LG C8 TV. I use my Apple TV 4k for all content, and it seems to work well for most services (Netflix, HBO, Hulu). But I recently purchased some content through iTunes (movie and TV series), and there is a serious sync issue (audio is behind the video).

Bruce had previously recommended me the Flexson HDMI switch: https://www.amazon.com/Flexson-3-Input-Converter-PLAYBAR-PLAYBASE/dp/B06W5QJW9T but in an Amazon review, someone is saying it doesn't support 4K content (no HDCP 2.2 support).

I'd really like to be able to watch the highest quality content I can (including 4K content) - so wanted to see if someone could recommend a good HDMI switch for me that might be able to resolve this sync issue. (Is it true that there is a built-in delay of somewhere between 25-35ms with Sonos - is it possible I'm just noticing this delay, and if so, is there a way to remove that?)

Thanks!
thats odd, I have a 4k apple tv and its the only thing that I dont get audio delay from? I even have itunes movies and shows, but I am using the beam over arc with a 2017 65" b7 oled. Did you set your apple tv to force dolby digital?

I agree - very odd. I have set the TV to force Dolby Digital. 😞. Interesting you have iTunes movies and shows, too, and it seems to be working OK?

a new motherboard really fixes this issues on LG Oleds?

NO! Lipsync issue with Dolby digital 5.1 content over PrimeVideo and two different HDMI sources.
Then you might have different issues. If the lipsync issues only occur over HDMI sources a new motherboard fixes them.

I beg to differ. I have had two attempts to fix the audio delay on my B7, both replacing the main board. Neither have worked and I have now reached the end of the road with LG. I am returning the TV for a refund and will try another brand, and probably not OLED for now. Shame really as the picture was stunning. However LG have been so poor at helping I am happy to be leaving them behind.
I don’t believe a fix for this issue actually exists