Sonos Arc lip sync issues.

HI @kirasallypip,

Please consider using the same HDMI cable that came with the Sonos Arc since it may be configured in a different manner than regular HDMI cable since the HDMI cable for our Sonos Home Theater Speakers are dedicated audio cable and not Audio Video HDMI cable.

Try to make sure we use the same HDMI cable from the Arc and make sure it is plugged in snug at the back of the TV and at the back of the Arc.

Thanks for your immediate response.I would love to know how it goes.

Thanks,

I have the original cable that came with the arc no joy! I’m thinking of going back to my playbar and returning the arc. I’ve seen lots of posts with the same problem.

Hi @kirasallypip.

I would suggest calling our customer support team, so we can be dig deeper on what's causing this problem and to further troubleshoot and understand what is going on with the lips sync on your Sonos Arc.

Thanks,

Have you tried connecting the TV to the Arc using an optical cable and the supplied adapter?

Not much point if I bought the arc for Dolby Atmos!

Does your tv have eARC?  I have read elsewhere that there are well known issues with lip sync and sky q over hdmi.  I have no lip sync issues at all with my Xbox one - LG C9 - Arc setup. All internal Tv apps are spot on.

I have had lip sync issues using skyQ with my Sonos Arc. Spent many hours trying different HDMI cables, different inputs on the tv as well as the many settings on the tv but to no avail. I have Philips OLED tv and no issues using tv apps like Netflix. (Funnily enough had no such issues with my 4 year old Samsung that was previously connected with the same set up.) I have found a workaround and it involves changing the skyQ sound output to “normal” rather than Dolby digital or Dolby digital plus. No sound delay at all but obviously losing sound quality as a result. It seems to me to be an issue with the tv processing the Dolby digital sound. Not sure if this is something that Sonos can get round with an update or Philips have to resolve but very frustrating.

Yes very frustrating, in the end I weighed up was the cost and quality worth keeping the arc! No was the outcome so it’s gone back and I’ve gone back to my Sonos playbar with no problems. 

I have the same problem with a new LG TV, sky, ARC.

It is beyond me how after such long product development, and with such a standard (at least in the UK) they cant sort this out.

I think Im going to have to return my Arc as well.

Hi,

I have the exact same problem ( Paul A   Please note )

I bought the Samsung Q90r to use with my Beam and 2 x 1 surrounds. I was hoping to next upgrade the Beam by purchasing the Arc. 
The problem is not cable related as I understand it but is due to the TV’s inability to pass through 5.1 digital audio fast enough to maintain lip sync plus the fact that the Beam and the Arc have only one input so that the digital feed cannot go from the SKYQ box into Sonos soundbars first and then proceed to the TV ( as is common with most high end soundbars and AV amplifiers )

PCM stereo can be fed into the TV direct from SKYQ and there will be no lip sync problems when passed through from TV to soundbar but that setting is just vanilla stereo. 
 

With the Beam you can get round the problem by using optical cables from SKY, TV, and XBox etc and by using an optical switch to independently feed 5.1 surround from each device direct to the Beam. 
You can also do the same with the Arc but what you can’t do specifically with the Arc is utilise Dolby Atmos as optical cable can’t carry the Atmos signal. Dolby Atmos requires the use of  arc or earc HDMI direct from source to Soundbar. There are currently no HDMI arc/earc switch boxes although HDFury are currently developing one. 
 

So currently the options are

Feed SKYQ into TV with a SKYQ set to PCM and you can get Dolby Atmos from the TV apps and stereo from SKYQ using the Samsung’s passthrough. 
Or use optical cable and optical switch box to get 5.1 digital from TV and SKYQ but no Dolby Atmos. 
Or use the arc port on the TV for TV  apps ( Amazon/Netflix ) and unplug the HDMI arc cable from the Soundbar and  plug in the SKYQ optical cable ( with Sonos optical/HDMI adapter ) when you want to use SKYQ. 

Samsung were wrong to say it’s a Sonos problem. The Samsung TV doesn’t passthrough Dolby Digital signals with correct lip sync. Video is ahead of audio and can’t be adjusted. 
 

However I do think that Sonos made a big mistake with their Arc soundbar in only having one port. This high price Dolby Atmos soundbar should have have had several input ports and arc HDMI to allow for direct input from several devices that potential customers are very likely to have and  that would eradicate any lip sync problem. 

If HDFury succeed in making a suitable   HDMI arc switch box the problem is solved ( though not inexpensively )

I would think it would be in Sonos’ interest to look into developing their own HDMI arc switch box or by  bringing out an Arc Mark II soundbar with sufficient ports to cater for satellite/ cable, Xboxes etc
I intended to buy an Arc soundbar but for now though “I’m out”.

BTW the Beam plus 2 x Ones surround speakers sounds superb  

SKQ

Bluray

Samsung Q90r TV

Inexpensive 3 way optical switch box with remote  

Dolby 5.1 surround from all sources