Hi @sorensent,

The stereo pair will separate if you connect to Roam via Bluetooth, put it into sleep mode, or power it off. The same won’t happen with a Play:1 or Play:3 since they’re not battery powered nor will they be taken out of range of each other.

Once Roam is powered on and connected to Wi-Fi, you will need to recreate the stereo pair again using the steps on our Creating a Stereo Pair FAQ.

Are you on software update 13.3 or later? 13.3 brought some improvements to the Roam.

Hi @James L. and @John B ,

Both Roams are always Power Connected , and placed same location all the time. They are not moved away. They are also always powered on just as our Play:1 and :3 always are.

Even with that, we randomly see the Stereo pairing breaks. It can break at any time, - between same minutes when pairing up-to couple of days. There is no rhythm to it. Last time the Pairing broke while i was listening to music -.., the music simply disappeared from the paired Roam, but continued on the other Roam as nothing happened.

For me, this is a bug.

If I Stereo pairing Roams, i don’t expect them to randomly dis-pairing, without my accept or at least notification with a note of why. This has to be a bug. 

If this is the case, I’d like to see a diagnostic from your system after one of these unpairing events. Please don’t re-pair them until after you’ve submitted the diagnostic and replied with the number in this thread.

Thanks James. I will.

i just repaired them this morning again. I will update you with the number, when it happen again.

Hi James,

We have just had a Power-Outage for 2 minutes because of some small changes to the electrical panel.

Though this ended up with the Roam Stereo pairing to break. The speakers where not touched doing this operation, nor powered down or anything. I will expect the same behaviors as my other Sonos Stereo paired devices.

I have submitted a diagnostic (1832063646)

Hi @James L. and @John B ,

it just happen again. Roams got repaired yesterday and this morning it was unpaired.

Diagnostic was submitted 1797695579

Looking forward to learn your findings.

Just to be clear, @James L. works for Sonos, I am just a fellow user.

Me too. I’d like an option for a “hard” pair which can only be undone by using the app.

Thanks for that.

From what I saw in the diagnostic, it looks like there was a connection time-out between the Roams that caused the unpairing. Specifically, the one now called Køkken didn’t receive a response from the other Roam within 5 minutes so they split. I can’t immediately tell why that’s the case, since that’s not something we can tell from the logs alone, but it does look like Køkken has a much weaker connection to your WiFi network compared to the other Roam. How far apart are these Roams from each other? 

Thanks James,

Does the physical distances between the two Roams meams anything to pairing and stability?

They have approx 5 meters between them, and is located same place where my Play:1 used to be.

Yeah, distance is pretty important. When stereo paired, the two players need a strong connection between them, as they share data when playing so they can keep in sync with each other. We typically don’t recommend having them more than 12ft (3.6m) apart when stereo paired to ensure good connectivity. 5m (16.4ft) is definitely in the upper range there, and depending on any obstructions between them may be causing the issue. If it’s possible to move them closer and test for a few days that would be great.

@James L. , so they are communicating over-the-air and not via WiFi?

Without getting too technical, one of the stereo pair is designated as the Group Coordinator (GC) and the other as a Group Member (GM). Both players communicate via WiFi directly to your router to remain connected to the system, but also talk to each other directly through a process we call Direct Routing. When playing music, the GC receives the music data from the streaming service over WiFi, and passes it on to the GM via Direct Routing. It’s technically possible for a stereo pair to work without a Direct Routing connection, but it’s much less reliable that way. 

I noticed that while playing, only the primary Roam received data on Wifi. The other nothing though capable to play. :-)

My Roams have visual with each other. Nothing in between. WiFi Bandwidth messure at both is approx arround 100mb up/down in average each.

As James has just explained, this is pretty much irrelevant to your issue.  You need to keep the speakers closer together

Hi James,

I still struggle with this. I have placed both Roams with 1cm distance, and they keep lose stereo parring.

I have uploaded diagnostics 461442601

Can this be hardware error? Im not able to have them stereo parret, nore grouped for longer time. 

Kr, Torben 

@James L. , let me know if you can see anything out of the diagnosticlog: 461442601

I think i will have to return the speakers, as Stereo parring is a must in this room - and obviously not stabel enough that i can trust it.

Kr. Torben

@sorensent, actually yes. There does appear to have been a memory fault on one of your Roams that didn’t show up in the previous diagnostics. Though, I’m not sure that caused the stereo pair to become disconnected in this instance since it happened several days prior.

Please get in touch with our Customer Care team for further troubleshooting and assistance.

Thanks @James L. ,

I will involve Customer Care Team.

Can you see witch Roam that had the memory fault?

Yes, it was the one named Køkken.

@James L. , Just talked with Customer Care.

The faulty device was this one: 54-2A-1B-BE-54-40: named Sonos Roam.
If that is not true, then please correct.

If our team have identified that as a faulty unit then I’ll believe them. If they’ve initiated a replacement process for you then please do go ahead with it 

They have more tools and information to go off than I do here on the Community, so please continue to engage with them.

@James L. , i have now installed the replace Roams with the one called Køkken. It has been running for some days, still with unpairing Stereo. Last test was today, where the loadspeakers is just 2 centimeter between them and create network connectivity. Stereo was unpaired again.

Diagnostics: 57306434

What on earth can i do to get this working? Is it the wrong device that was exchanged?

Kr, Torben 

I’m honestly not sure, and it’s disheartening to hear the issues are still there.

You should continue to speak to our support team at this point, since it does seem to require some further troubleshooting, which I can’t effectively provide here. 

If they do end up coming to a conclusion and resolution, I would be interested to hear what that is, so do keep me updated.