Connect (GEN 2) suddenly out of sync

I suggest swapping the Connects to see whether the problem follows the Connect or stays with the speakers. 

Do the speakers have any sound processing settings?

No, the B&O towers do not. But I did discover, through my own ignorance, that the other B&O towers are indeed out of sync as well. My highly unofficial test was standing on the staircase and listening downstairs, and I had thought they were in sync, but upon testing a second time they were not. So, the issue is with the Connect (GEN2) in general, not the one specific box. This happened after the latest Sonos update, so perhaps the Connect (GEN2) system is simply outdated, thus forcing me to buy the newer Port system?

Hi, Sorry, but if you are going to make ridiculous suggestions like that, there is no point trying to work out what is really going on.  

I don’t get it, what was a “ridiculous suggestion?” I’m simply trying to understand how and why both Connect’s are suddenly out of sync, and what my options are for fixing it. I apologize if my wording was somehow twisted into something different.

Are you seriously suggesting Sonos would deliberately sabotage a product used by hundreds if thousands of its customers in order to force them to replace them? 

Even if one were a total cynic, it should be clear that this would risk  colossal reputational damage. It would be an insane thing for Sonos to do.

OK. My first observation would be that if this were happening to all Connects there would probably be dozens of posts about it by now. So I suspect, although cannot be sure, that this is something specific to your system. 

Can I check. Do you have another Sonos speaker fairly close to the Connect, and you can hear they are out of sync?

(Speakers don't have to be that far apart before the time for sound to travel between speakers creates an echo effect. )

Ah, now I get it...sorry, I’m not THAT cynical, just sadly used to product obsolescence I suppose (PC’s, phones, etc.). Yes, there is a Playbar between the two towers underneath a Samsung TV and a Play:3 about 30 feet away on the far side of the kitchen, both of which are still in sync. My Roam, along with the Beam and two Play:1’s upstairs for the Master Bedroom TV, are all still in sync.

The towers appear to be just split second behind, but it’s enough to make everything sound like an echo, and therefore annoying as hell...

I just tried using the Beam as the source throughout the entire house, and upon cranking the B&O towers, they were out of sync. Running off my PC as the source has the same results.

It seems apparent that the Connect’s are the lone culprit. There are no settings other than “variable or fixed” Line-Out levels, and they’ve been in sync all these years up until the latest Sonos app update. Admittedly, I did not notice the issue immediately after the update, but that could simply be because I hadn’t cranked up the volume for any particular reason until a football game last weekend. 

Thank you for trying to help.

I know this will sound like a stock response, but if you haven't already tried this I think you should power off all Sonos devices and your router and the B&O speakers. Power the router fully back up, then any wired Sonos devices, then wirelwss Sonos and the B&Os.

Incidentally, do you have any wired Sonos Devices?

I’ll give it a try...

Yes, the Sonos Boost is the lone device wired directly to the router, thus using the SonosNet for wireless connections. Turning that off and waiting a few minutes was my second troubleshooting test after trying the same with the Connect box. I did reset the router but did not unplug any Sonos devices at the same time. 

I cannot explain why one CONNECT might suddenly have an issue while another may not.

With your testing, be aware that sound travel in air is pokey at about one foot per millisecond. Consider the situation where speakers ‘A’ and ‘B’ are separated by 30 feet and both are connected to the same amplifier. Lets assume that the same length of wire connects both speakers and we don’t need to consider signal travel time differences in the wire. A listener standing near ‘A’ will claim that ‘B’ is 30ms late and a listener standing near ‘B’ will claim that ‘A’ is 30ms late. A listener ‘C’ standing midway between ‘A’ and ‘B’ will claim that the speakers are time aligned. All three observers will be correct.