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Sonos Arc Ultra strange static clicking sound

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Hello everyone.

I have a setup consisting of the following:

Sonos Arc Ultra

Sonos Sub Mini

2x Sonos Era 100

LG OLED C4

DUNE HD Pro 8K Plus

Xbox Series X

PS5 Pro

All system components are updated to the latest software version.

About a month ago, I noticed a strange sound. It’s very similar to a signal interference noise that lasts for about a second or less on the Arc Ultra. It can occur once every 30 minutes, sometimes once an hour. There's no pattern to when it happens. It’s like a static beep lasting a second or less. It’s not heard on any of the other system components. All devices have been stationary — nothing was moved or touched. There’s no visible damage to any of the devices.

When watching movies or series, if I hear this sound and rewind to the same moment, the sound isn’t there anymore. This sound also occurs when I turn off the TV, after a few minutes of turning off the sound may also occur. Up to 10 minutes after turning off the sound may appear. This means the issue isn’t with the Arc Ultra’s speakers themselves, since the sound doesn’t repeat at the same spot.

The Arc Ultra worked perfectly for about 1.5 months after purchase. No issues at all — everything was running flawlessly.

This happens with all sources: DUNE HD Pro 8K Plus, Xbox Series X, and PS5 Pro.

What I’ve tried so far:

1. Restarted the system (unplugged each device from the power).

2. Updated all devices to the latest software versions.

3. Disconnected the LAN cable from the Sub Mini and Arc Ultra and used the entire Sonos system over Wi-Fi.

3. Contacted support. They only suggested disconnecting the LAN cable from the Sub Mini. In the end, I switched the whole system to Wi-Fi.

4. Reset the Arc Ultra to factory settings.

5. Changed the compression setting in the Sonos app from Automatic to Compressed.

6. Re-ran TruePlay just in case.

7. Disabled TruePlay just in case.

8. Reduced Wi-Fi power (everything is connected via 5GHz; 2.4GHz is disabled on the router).

On TV: eArc + passthrough + bitstream

Please let me know if you’ve encountered anything like this or heard of this issue. I really don’t know how to solve it anymore.

Let me know if you want help editing this for a support forum or official message.

Or maybe Arc Ultra has nothing to do with it and the TV is to blame (one of the latest updates)…

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P

peregarikAnswer

Trending Lyricist I

We users are limited in what internal data we can see but Support, if sent a diagnostic can see much more.

Wait for the glitch and within a few minutes, sooner the better and not more than ten minutes, send the diagnostic. Note the number and contact Support. Do not post the number here.

Hello. I sent diagnostics and contacted support more than once. Now I will try to record a video and send it so that they can look at the problem. They asked for a video, not audio.

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T

tsquare64

Lyricist II

I experienced a similar but not identical clicking/popping sound from my soundbar, which generally occurred only after about two hours of continuous usage. Also, when I paused my DVR, the clicking/popping noise would still occur. It is very likely that there are multiple root causes of this clicking/popping noise, some of which could be defective hardware.

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