I actually have an unused Arcana that I haven’t sold on yet but I don’t think this solution will work for me as I have multiple devices going into the TV that need to send sound to the Arc (happy to be corrected on this assumption!!).

Although I do have a 4K Dr HDMI which I might try between Apple TV and TV so see if this sorts out what seems to be some kind of a audio signal problem…
 

I have just experienced the same with a Sony XBR55X950 and my Xbox Series X, besides that I have identified Sonos Arc doesn't Honorate the Volume Limit while playing Spotify on the Xbox

I have submitted reports. 

Your confirmation number is: 1159343669

I’ve been reading a lot of troubleshooting articles these last months, and there seems to be a pattern.

I have not experienced this “loud pop” described by many users in this thread, but there seems be some sort of mismatch between specific types of gear when you are trying to send Dolby Atmos signals through a TV to the Sonos Arc.

The issue: huge delay between what happens on-screen and Dolby Atmos audio, at least 500 ms.

My chain: Xbox Series X > Samsung Q90t > (eARC) > Sonos Arc + Sub/2x Sonos Ones.

Passthrough is enabled on every device that supports it. Every device is kept up to date. Both cables are 2.1 certified. New Asus router/no network issues.

Sonos support has checked my diagnostic report (no errors), Samsung support has updated my HDMI-ports (they said this was a known error, but the update did not fix anything). Xbox support is notoriously difficult to reach (actually not possible right now).

My question to Sonos would be: how am I supposed to know which device is the culprit? Surely there must be some type of collaboration between these huge, global suppliers (Sonos, Samsung and Microsoft) to iron out bugs and making things play nice? Or? This is really frustrating, I can’t tell what device is causing trouble, but at the same time I have a right to expect that when something boasts “Dolby Atmos”, then I get just that. All these devices support it, but none of the suppliers will ever point to the one of the others and say “they are the cause”, because that would reflect poorly back on them for not adressing this up front.

I experienced this issue last Friday for the first time since owning the Arc watching Shang-Chi on Disney+ on an Apple TV 4K – Atmos enabled.

Attempted Snowpiercer on Netflix, same result after about 8 minutes.

After upgrading to 13.4 last night; let both run through as I worked downstairs and checked periodically to see if the audio had dropped. After a full viewing on both, no issue.

Not sure if 13.4 fixed the issue from Apple TV but it did get me digging further. Not sure if it’s been mentioned in this thread already but the common factor between Atmos on Apple TV and Xbox Series X is that they both use Dolby MAT.

(After that first failure, I tried my TV’s native Disney+ app and a Ultra HD Blu-Ray, both worked without failure, which are DD+ and Dolby TrueHD, respectively). 

That’s interesting about Dolby MAT, and whether 13.4 might have fixed it for Apple TV.

I’ve ruined any chance of being able to confirm that as last night I added a Dr HDMI 4K between the Apple TV and my Sony TV and updated both Sonos and the Apple TV. No chance of a baseline now!

Fingers crossed I’ve had the last “pop”.

But does the pop damage the unit and how are we meant to know if it has?

Only had it once, not since and so can’t do the diagnostic and ring them.

i really see the load pop(happened to me with xbox series x) as a sonos software issue around dolby Atmos. it's not Apple Tv,xbox or other devices, it is the sonos Arc.the pop only occurs if you're using sonos. I after more than a year of complaints and issues I hope sonos has a software fix.Sonos products are very expensive.Customers deserve the best from sonos customer support.

I have the same issue.  We have been using our brand new Sonos arc and sub woofer for about 6 weeks. It was installed professionally by Best Buy’s geek squad.  We watch movies once a week and listen to Apple Music. During the last week when watching a movie we hear a loud pop and the sound goes out.  I ran a diagnosis report today and sent it to Sonos to investigate the source of the problem. We were so looking forward to using this system for a family for Thanksgiving. I sure hope this can get resolved as this is very disappointing. 

Has anyone still had this issue since the firmware upgrade to 13.4? Nothing in the patch notes but surely this must be on the Sonos radar by now. 

This has been happening for me for 3+ weeks. Have called Support Twice, left diagnostics, and have ended calls with “solutions” that days later only has it happening again.

Apple 4K plus ARC for me as well. Happens most often while watching ATV+ and Disney+ Dolby Atmos content, but it’s also happened while listening to Apple Music through ATV4K, and even while screen saver runs. I even managed to capture video of it.

I’m currently running 13.4 so that hasn’t helped either.

Sometimes it knocks out the centre channel, other times it’s just the pop. Neither is ideal

So I thought this issue was resolved for me but I've continued to running into it. A resolve is to restart the Sonos Arc (which is more cumbersome now the :1400 pages no longer exist) but will return for Atmos content on Apple TV.

I've come across two different versions of the “pop” – one which the centre channel drops out, one where the “pop” is just audible in the audio track.

Drop out can be found under 1272885458.

Popping in audio track is 1786177697.

This is happening to me on a Beam Gen 2, connected to an Apple TV 4K and a Sony XBR TV. It has occurred quite often while playing Apple Music on the Apple TV. Done all the resets and cable connections and no luck…still happening. Have switched the Apple TV to stereo and have not encountered the problem but I bought the Beam for Atmos sound and now feel ripped off. 

Attempting to pattern match for some common ground…

From what I can tell from this thread; it’s pretty much exclusively Atmos, if not entirely.
It seems to be common from Xbox and Apple TV — both encode into Dolby MAT, which I think might be a root cause here.

What’s the ground on the televisions people are using?  I’ve seen people report issues with Sony and LG — I’m a Sony owner myself.  Curious if the TV is garbling the signal in the middle of the chain.  I’ve not had any issues since I bought everything this time last year, so I’m curious, why now… software issue, somewhere?

I’m on a Sony 4k (X900 I believe) with HDMI 2.1. When I watch the same Dolby Atmos content through the native apps on the Sony OS I have no issues. That ATV+ And the ARC do not seem to get along. 

Looks like 13.4.1 is out — we’ll see if it fixes anything I guess…

I did reach out to Sonos support with my diagnostics yesterday, and was told the following: 

Sonos CS Rep: Alright then, I've checked now with one of our senior engineers, and in your system all products are working properly. Indeed that sound which is coming up on the TV is made as we have there a switch between audio codecs used. Right now we are working to solve this matter and to remove that pop sound. 
Me: So the issue is a known bug? 
Me: Just to note, the "pop" occurs midway through content — not when transitioning codecs (between content). 
Sonos CS Rep: Our engineers are aware of that pop sound, and right now they are working to solve this issue as fast as possible. As a temporary workaround as you mentioned would be to disable the Atmos on Apple TV and will work without that "pop" sound. 

I reached out to Sonos support (by phone) as well. The tech did a lot of putting me on hold to talk to her level 2, but I never got to talk to that person myself. They seemed unaware of the issue. I mentioned this thread.

The main takeaway was that they said my diagnostics couldn’t be used because they were more than 24 hours old. I should call them immediately after the Pop happens. However, there was one useful piece of diagnostic advice. I haven’t had the pop since (yet), but perhaps one of you can try it.

After the pop, before resetting, while the Arc is still dropped out; open the Sonos app and play music from it. Does that work?

Will see if it occurs during Hawkeye tomorrow, and attempt if it happens.  

If you want a guaranteed pop...put on Get Back (Beatles Doc) from Disney+ 

Fenway, great response. It’s happened twice in the past week both times with Get Back on Disney+. 

This keeps happening to me while playing hellblade on the Xbox series x!

Quite infuriating 

Hi, my Arc is doing the same.

connected to Xbox series X it does that pop then no more sound thing since the very beginning.

here is my diagnostic : 1513982617

last time I unpowered it and it came back. 
 

am gonna try to do it once again.

Mine does it when playing day of the tentacle and I navigate out of the game back to the Home Screen. Does it every time so something is triggering it at the same point, presumably when it changes audio signal. Strange thing is my arc says it is receiving Dolby Atmos from the series x all the time. Even when playing a non Atmos game. 

I’ve email the CEO Patrick Spence about this and one of the senior technicians is looking at it. I e sent them a video of the loud pop so hopefully will get somewhere with it. 

Good you could catch a video about it … it is so remote that it is hard to reproduce. Quite startling when it happens.

Way to go! Hopefully you’ll get a response and all of us suffering from this bug will get a fix. So incredibly annoying.