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Intermittent Audio Dropouts + Echo with Beam Gen 2 (Dolby Atmos / Stereo Pair Issue)

  • April 1, 2026
  • 2 replies
  • 10 views
Y

Hello everyone,

 

I’ve recently set up a new Sonos home theater system and I’m experiencing some issues that I’m hoping to get help with.

 

My setup:

  • Sonos Beam (Gen 2) connected to a Samsung OLED S95C via HDMI eARC
  • Beam is also connected to the router via Ethernet (CAT 8) where my Download speed is 115mbps & Upload is 23mbps
  • 2 × Sonos Era 100 configured as surround speakers
  • Sonos Sub Mini
  • Additional 2 × Era 100 configured as a stereo pair placed to the left and right of the soundbar

Issues I’m facing:

  • I’m experiencing intermittent audio dropouts, mainly from the soundbar (Beam), where the sound cuts out for about half a second.
  • The issue occurs only with TV audio (apps, TV channels, and console connected to the TV).
  • When playing music directly from the Sonos app, everything works perfectly with no dropouts.
  • The issue becomes more noticeable when watching Dolby Atmos content.

Additional behavior:

  • When I activate (group) the stereo pair (Era 100s on the left and right of the soundbar) while watching TV, I start to notice an echo effect, followed by more frequent audio dropouts from the Beam.

What I’ve tried:

  • Adjusting router channels
  • Ensuring proper TV audio settings (eARC, Pass-through, Atmos ON)
  • System is brand new (a few days old)

 

Has anyone experienced something similar, especially with Dolby Atmos content or when grouping additional speakers with a home theater setup?

 

Any advice or recommendations would be greatly appreciated.

 

Thanks in advance!

2 replies

MoPac
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  • MoPac
  • Headliner III
  • April 1, 2026

 First try the Beam wireless.  The left/right ERA 100s are going to have a delay due to the fact they are not bonded to the Beam-Sub Mini-ERA 100s.  When speakers are grouped with a soundbar while watching TV there will be a delay causing an echo sound.

 The dropouts would usually occur in the speakers grouped with the TV room.  I don’t know why the Beam would have dropouts unless there is some wireless interference.

 There is the app Sonosequencer that is supposed to allow you to use a left/right pair of speakers in the surround setup, but it is a bit complex.  I have not tried it.

Airgetlam
  • Airgetlam
  • April 1, 2026

The Beam could be experiencing dropouts due to the TV not sending a correct (full) signal all the time. I’d double check the TV for updates, and reset the system by unplugging the TV and the Beam from the wall for two minutes, then plugging them back in.

Alternately, I would recommend that you submit a system diagnostic within 10 minutes of experiencing this problem, and call Sonos Support to discuss it. Don’t post the resulting diagnostic number here.

There may be information included in the diagnostic that will help Sonos pinpoint the issue and help you find a solution.

When you speak directly to the Support staff, they have tools at their disposal that will allow them to give you advice specific to your network and Sonos system.

Bruce
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