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Day 2 with my ultra, turned on the TV and was blasted by the soundbar at max volume, I know when I powered it off it was just under 50%.

 

Now this evening, 3 times the arc ultra has wound the volume up to Max within a few seconds.  I suspect it is a problem with the volume touch panel on the device because when I run over to turn it down the volume touch panel in not responsive.

At times the bar makes click noises when everything is off, they are like some of the interface chip and chirp noises when you use various controls on sonos products.

So, anyone else? known issue, new bug? or hardware fault?

I have powered it off for a few minutes to give it a reset but will be annoyed if this is it!

Who ya gonna call??!!

Call Sonos?

It does sound rather like a fault somewhere in the HT setup. I have the same soundbar, but not experiencing the issue described. I would suggest maybe trying these things, perhaps in the order shown…

  • Submit a Sonos System Diagnostic report shortly after the issue reoccurs and note the reference number.
  • Power off the TV & Home Theatre for a few minutes and power all on again.
  • See what happens if all other HDMI devices connected to the TV are left powered off.
  • Try a different HDMI cable between the TV and Soundbar.
  • Consider factory resetting the Soundbar (only do this if the soundbar is not your only Sonos device held in the Sonos App) - see this LINK
  • Contact Sonos Support using the link below…

https://support.sonos.com/s/contact

FWIW too - Happy New Year and hope you can get the issue resolved.👍

In the meantime set the volume limit to a reasonable volume to keep from destroying the Ultra.

Thanks,

Set the volume limit to 65% is still managed to change to 100%.

 

Have tried disabling the touch controls, will see how that works then contact support after that test.

Problem has not repeated since touch controls have been disabled, so guessing faulty controls.  I would likely never use them but will contact support and get them to diagnose and replace if required.

I'm on Day 3 with similar issues. All was well on day 1. Day two bass was gone. Day 3 brings clicking and popping sounds and still no bass. Also voices a barely heard even with speech enhancement on high. After two customer service calls with numerous diagnostics performed, they suggested I return the device. I'm not sure if I should exchange it for another one or just get a refund.

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