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Contributor I
November 7, 2024
Question

Arc Ultra + Era 100 Surrounds

Arc Ultra and Era 100’s 

 

Anyone else have this setup and noticing that the Era 100’s as rears are doing less work with the Arc Ultra when compared to the standard Arc? I’m barely noticing any audio coming from the rears even with the surround volume turned up to maximum.  I swapped my original Arc back with the Era 100 surrounds and tested the same Atmos movies on the Arc and the Arc Ultra, and there is a significant difference/reduction in the signals being sent to the Era 100’s in the rear channels with the Arc Ultra.  Increasing the “TV Level” setting for Surround Audio in the Sonos app increases the front surround volume coming from the Arc Ultra but the signals coming out of the ERA 100 rears are almost non existent. 
 

Is this behavior the result of how the Arc Ultra processes surround channels, and should be considered normal operation?

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302 replies

Lyricist III
February 3, 2025

I’m not sure whether I’m reading into this post too much, but it doesn’t instill much confidence on them fixing the issue anytime soon.

 

https://www.reddit.com/r/sonos/comments/1idvqfe/comment/ma9im2q/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button

Enthusiast II
February 3, 2025

​@Corry P ​@stevetsanders has pointed out on Reddit that this has been notified, but nothing on the time line to fix.

I hope this means the fix is not yet public knowledge.

We are all (most of us) very frustrated with your flagship product when using rear speakers! To the point these are being returned…

Lyricist III
February 3, 2025

Stevetsanders - I read through all those comments at the link you provided but I’m not sure I get any real perspective one way or the other regarding what Sonos will do about our specific Sonos Arc Ultra with Era 100s as Surrounds issues.  It looked to me like the discussion on that link dealt a lot more with User options being added to the overall Sonos App then more simply just making a 5.1 Source behave normally between the Sonos Arc Ultra and the rear Surrounds.  I remain hopeful that when Corry P gets back to us we will hear something specific about what actions are planned as well as some estimate of a timeframe.  

Lyricist III
February 3, 2025

​@DaytonJohn this is the comment I linked to specifically

 

 

Enthusiast I
February 3, 2025

2 years ago all i wanted was to upgrade my Sonos amp to ARC get Atmos.
I was always worried about the loss of my tower speakers, but thought Ultra would be worth the trade off.

Now…… I seriously think that I should of just gotten a completely dumb AVR and just gone with wires.
At least I can plug what I want and adjust the volume however I want. 

Its crazy to be missing so much control just over volume……. I was asking for any fancy inovative feature. I just want individual volume control. 
 

Lyricist I
February 8, 2025

“Nothing on the roadmap” is extremely discouraging. ​@Corry P is there no way to elevate this, or even have an official statement regarding the issue?

Corry P
Sonos Staff
February 10, 2025

Hi ​@shivkhanna 

​@Corry P is there no way to elevate this, or even have an official statement regarding the issue?

I am working on getting a statement out, but it needs to be approved by several departments before I can go public with it.

"Common sense is the collection of prejudices acquired by age eighteen." - Albert Einstein
Enthusiast II
February 10, 2025

Hi ​@shivkhanna 

​@Corry P is there no way to elevate this, or even have an official statement regarding the issue?

I am working on getting a statement out, but it needs to be approved by several departments before I can go public with it.

How long have we been waiting for this statement? I think it would be much easier to just fix this 5.1 sound bug, without an explanation. It can't be that difficult...

Lyricist I
February 16, 2025

Just bought an arc ultra, came to this thread, and wish I hadn’t :\.

​@Corry P does Sonos have a single leader for the application?  Who is this person?  

Lyricist I
February 16, 2025

​@Corry P can you tag tom conrad here as well?

I’d like this person to acknowledge that you cannot change the volume on the devices, that this isn’t on a roadmap, and he put the following statement out:

When it all works, it’s absolute magic.  It’s also true that when it doesn’t work, our customers are taken out of the moment and are right to feel that we’ve let them down. I think we’ll all agree that this year we’ve let far too many people down. As we’ve seen, getting some important things right (Arc Ultra and Ace are remarkable products!) is just not enough when our customers’ alarms don’t go off, their kids can’t hear their playlist during breakfast, their surrounds don’t fire, or they can’t pause the music in time to answer the buzzing doorbell.