Low Volume- Sonos Arc

Have an ARC for 2 years ….no issues….then one day it disappeared from my system...I go into the app and find it and reinstall...pretty easy to do….that’s when I discovered the low volume...sonos said it was a faulty ARC since the diagnostics did not show any problems...tried everything to get the low volume back to where I used to listen...about 23-25...now have to crank it to 55-60 to listen to music or TV...I’M ONLY 59 and hearing didn’t just go on me….So I swap out the ARC and get a new one…..NO CHANGE!!

I have Sony Oled..2 years old…..let us know if anyone gets a fix for this!!

This just happened to me too. I’ve had my ARC for about two years now and use it almost exclusively with my Apple TV, which I use for all my streaming and music. I rarely use the Sonos app, except when I want a readout of the audio format of whatever I’m watching. But I’ve always noticed the volume slider and it’s generally been in the 20-30 range for almost everything from stereo TV to Atmos movies. I was on vacation the past 10 days and came home and turned the TV on and noticed there wasn’t much volume. I discovered that the volume suddenly needed to be set to about 70 for TV and about 50 for Atmos to achieve the same actual volume as I had before. I tried everything from reseting the Sonos to unplugging to retuning. And it’s the same issue with the TV’s (LG CX) built-in apps. Ultimately, I’m not really sure it matters. It’s not like I ever want it crazy loud anyway. That is, I’m never going to set it to 100 volume or even 90, so it’s generally irrelevant what a somewhat arbitrary slider number reads. Still, it’s a really strange change and I can only assume Sonos did this intentionally to have a more realistic volume range. This is clearly an issue that a lot of people have -- a sudden and drastic change in volume reading -- and Sonos should offer an explanation. 

They have already explained the change to volume mapping here:

Fantastic, thank you! I’m surprised this didn’t make it into the thread earlier. Anyway, glad there’s a solid explanation and it makes sense. Appreciate that you pointed it out.

Sony A95L - Here’s what helped mine a little. It seems once the TV recognized you have an external audio system it uses the TV as the center speaker. This can be found under Audio System Settings.

Helped you with what, exactly?

If I understand your settings, you are using the TV’s speaker with a Sonos soundbar? That already provides a center speaker?

I’m unsure of how this is handled by CEC. 

I found out my daughter had been using her phone to cast a show (with amazon prime). She used the volume of her phone to turn down the volume (which I thought wasn't possible before). We solved the issue when we turned up the volume in the same way: cast a show from the phone to the chromecast and turn the volume back to maximum.