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Era300 surrounds modulate the volume

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I have an Arc ultra with two Era 300 surrounds and while the system is functional when the surrounds are grouped with the arc ultra, the sound from them is modulated, by which I mean it gets quieter and then back up to normal volume, then quieter then back up to normal volume at a rate of about twice a second. This modulation happens with any sound source if the Era 300s are grouped with the arc ultra. However, if they're ungrouped they play normally with a consistent volume and there's no modulation effect at all so the problem is definitely associated with grouping them with the Arc Ultra. Has anyone else experienced this problem?

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Stanley_4Answer

Grand Maestro

I’m a bit too confused here to offer any real help…

But since I noted the Ethernet connection mentioned that opens the “disdable wifi” can of worms that has bitten so many folks.

If you want a Sub or Surrounds to work well DO NOT disable the Arc’s internal radio that is needed for proper operation.

Yes, that is what disable-wifi actually does, so DO NOT DO IT.

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AjTrek1

PS

I forgot to say that the arc ultra is wired and the Era 300's are wireless. I have power cycled all 3 units as well, with no resolution.

When reporting issues with your system it makes a difference as to the advice given when you omit important facts such as having the Arc Ultra wired. Going back to my last post the information I gave was given assuming that everything was working over WiFi; not Ethernet. I hope you didn’t wire the Arc Ultra again if you followed my suggestion.

On second thought… who knows what else you have not told us. Therefore your best option may be to call Sonos Tech Support. Good Luck to resolve your issue 👍

Together Everyone Achieves More = T.E.A.M.

Stanley_4Answer

Grand Maestro

I’m a bit too confused here to offer any real help…

But since I noted the Ethernet connection mentioned that opens the “disdable wifi” can of worms that has bitten so many folks.

If you want a Sub or Surrounds to work well DO NOT disable the Arc’s internal radio that is needed for proper operation.

Yes, that is what disable-wifi actually does, so DO NOT DO IT.

M

michaelexeAuthor

Trending Lyricist I

Thank you all for your suggestions and for most of you understanding that a newbie doesn't know what you need to know to be able to provide suitable advice.

It was the comments from Stanley_4 that set me right mentioning that the Wi-Fi should not be disabled. When I checked my Wi-Fi was off, so I changed it to be on and that has resolved the issue, no more modulation. It's a wonder that the App allows it to be switched off, though no doubt others know why that's not possible.

If I have to post again and hopefully I won't, I will try to think of every possible thing that may help my fellow Sonos uses solve the issue.

Thanks again to Stanley _4.

Stanley_4

Grand Maestro

The mis-labeling is something Sonos has resisted fixing, for no known reason.

The option was originally there to support multiple rack mounted Amps, where the radios would be too close (under 3 feet) to operate properly, it also reduced heat build-up. It got propagated to other devices as the old firmware development didn't discriminate based on device type. It is still usable in non-surround situations where mutual interference is an issue.

For some folks it may work to wire all devices in a home theater set but it is very dependent on the local network being capable of supporting Sonos' needs and isn't often recommended.

M

michaelexeAuthor

Trending Lyricist I

Thanks for your help and for explaining Stanley_4.

Over and out

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