Low Volume- Sonos Arc

Hi folks,

Thank you for reaching out to the Sonos community. I appreciate you for bringing this concern to us. Let me help you with this.

Please check this community thread which may help you with the issue. Also, you may try to perform the troubleshooting steps below and see if it works for you.

1. Unplug the HDMI cable from the Sonos Arc and the TV. 
2. Unplug the power cable from your TV, the Sonos Arc, and any connected audio source (such as a cable box or video game console). Wait 30 seconds before you plug them back in.
2. Reconnect the HDMI cable to your TV and the Sonos Arc. Inspect the HDMI cable to ensure it’s not bent or kinked and check to see that it’s fully inserted into both devices.
3. Update the TV’s software (if available)
4. Disable eARC on the TV.
5. Adjust the group audio delay - Settings > System > Tap your Sonos Beam > Group Audio Delay and then choose a delay option.
6. Check for Sonos update - Settings > System > Check for updates.

If you have any questions about this. We and the community are always here to help.

Yes all brand new but have to have it over 50% for normal listening..  Lg b9 TV eARC. 

Ironically, we have the exact opposite issue.  Amazon Fire TV Cube (2nd generation) connected to a Samsung Q9FN series TV, connected to the ARC via HDMI (from the TV to the ARC).  

The ARC is bonded to a SUB and an AMP for surround.

For all the content from the Cube, the room volume has to stay at a VERY low level (10% or less).  This results in music playing very low (before raising the volume) and the digital assistant volume to be so low that it’s almost inaudible.

Why would we disable eARC on the TV? Doesn’t this allow for Atmos output?

I had the same problem and, for my case, I figured it out why this happened. I lowered the limit volume of my sonos arc, through the app, from 100% to 50%, I didn't remember I have done that, so I reset the limit volume to 100% and all was back to normal. Hope this can help. 

Hi folks,

Thank you for reaching out to the Sonos community and letting us know about your concern. We really appreciate your patience while we are working through this. Our Sonos engineers are investigating this issue and working for a solution that works for users experiencing the same, but we don't have any timeframe to share. Let me share the following threads in the community for your reference:

https://en.community.sonos.com/home-theater-228993/arc-tv-sound-cuts-in-and-out-6842963
https://en.community.sonos.com/home-theater-228993/sonos-arc-samsung-q90t-sound-cutting-out-anyone-else-6843526?page=2&size=25

Make sure that your TV is up to date. eARC should always be enabled if possible to get the most out of the Sonos Arc. If your TV is having trouble when eARC is enabled and you're using streaming services, you can disable the eARC from the TV settings because the streaming audio will still be compressed and you'll still get Atmos and most probably we’re investigating it.
For 4k Bluray or any hard media plugged in directly to the TV and has Atmos, always enable eARC because eARC always looks for uncompressed audio. Here are helpful videos about it. 

https://www.youtube.com/watch?v=nLlaGs2lhIw
https://www.youtube.com/watch?v=sbTD0hqJWQQ

We also recommend reaching out to your TV manufacturer for further assistance. Please let us know if you have any further questions or concerns, we'll be glad to assist you.

I recently purchased a Sonos Arc and I’ve been having the same issue with my Apple tv 4k.  The sound coming from my Sonos arc on my apple tv 4k is very low compared to the internal apps on my LG, 65 inch CX.  The sound is fine on my 4k blu-ray player, internal tv apps, and my xobox.  I’ve looked at all the threads I can find and can't seem to fix this issue.  Does anyone have any recommendations on how to fix this issue.?  

@mbrunner What are your audio settings set to on your Apple TV? How exactly is your Apple TV connected to your TV? Have you tried a different HDMI cable?

@GuitarSuperstar Apple tv 4k is set to allow Atomos and it’s connected directly to my LG CX via a HDMI 2.1 cable.  I made sure that my Sonos controller volume limit is set to 100% and allow loudness.  Also, I made sure that the Apple tv night mode is turned off.  When I use the internal apps on my LG CX the volume is much louder and punchier with full sound.  

@mbrunner Do you have your TV’s audio settings set to “Passthrough”? Have you tried disconnecting your Apple TV from your TV and unplugging your TV, Arc, and Apple TV from power for about a minute?