Hi @lkupersmith 

Thanks for your post!

This is quite strange, but almost certainly not related to networking - those kinds of problems would lead to audio dropouts on the surrounds.

Please remove the surrounds from your Arc, then add them once more:

Remove surround speakers

Add surround speakers to a Sonos home theater

Please also unplug your TV from power for at least a couple of minutes.

If the problem continues, please test multiple sources - does it happen with all TV sources, or just one? If you play music through the Arc, via the Sonos app, do you get the same result?

Please also submit a support diagnostic while the weird sound is heard, and reply here with the number given. Thanks.

I hope this helps.

Thank you @Corry P 

I’ve done the Remove and Add as suggested. I did not do a speaker Reset on the surrounds in-between. Should I have? 

In any case, upon re-adding the One’s as surrounds, they were identified correctly and the test tones worked fine, but the Add procedure gave an error (twice). But when I took a look at System, Products, it shows both One’s included as surrounds and they work. I guess I won’t know if the strange sound warbling problem is gone until I’ve used the system for long enough for it to have appeared.

If it happens again, I’ll submit the diagnostic as instructed.

Thanks,
Lee

Hi @lkupersmith 

No - I’d not reset until everything else had been tried. Let’s see how it goes first. As two speakers are making the strange sound, it’s very unlikely that a reset would do anything useful.

I can’t say it’s fixed for sure, but it's been a week and so far, so good. In the past however, there have been periods this long where I experienced no problems, but a week ago, this was happening every 2 or 3 days.

It’s been another couple of weeks without a problem, so I’d say the problem is fixed. Thanks for your help.

Hi @lkupersmith 

You are very welcome, and thanks for updating the thread