I simply don't believe it.

I made the mistake of updating and now I also have sound issues:

1. My two Subs which used to sound cinematic, now sound like they are barely on.
2. I used to watch Dolby Atmos films at 25-35 and that was loud enough, now I have it around the 60 mark for. the same volume. (And with poorer sound).

After the 14.6 fix, the sound and stability was restored to full glory. 14.12 has reverted and then some. (At least with the 14.6 issue you had good sound before it dropped). 

I am so annoyed at myself that I did not ignore the update messages. It's the kids summer holidays here in the UK, which means it's a perfect time for movies. I now just don't want to watch them and not looking forward to weeks and weeks of no updates to restore.

Yours, in complete disbelief and dispair,

Brad

It is almost the weekend and no sign of life from Sonos, regarding the 14.12 update. Hey, Sonos are you gonna repair our pricey systems or you gonna watch how we listen quiet sound screaming of your behaviour?

Sonos almost never tells us what is going on so don’t expect any announcements beyond “this has been passed to support” to be made.

 Eureka! I have made a Big reset of everything including Playbar, Sub and Ones. Then made a room and put inside it first the Playbar and then the rest. Then I have TruePlay-ed the room and I think the sound output got better. It is not like before, but much close to it. Try it!

Playbar? Isn’t this an Arc only problem?

Nope. It’s in a complete product line. You need to remove and forget everything and start from scratch. Hope it works as with me 

Same problem here. All content sounds brutal now. After 14.10 my system was finally where I liked it. It was the first time I was completely happy with all my Sonos products. Now I’m just sick to my stomach having to listen to this and be left in limbo. Tried listening to music last night and I can’t even enjoy it anymore. Music on my Echo Show has better sound right now lol.

@Koyno Since Sonos only states the new sound is Arc only, is this based on you personal experience only, or can you point to other sources?

Personal xpirience. But as I mentioned I managed to solve it. But be careful with Sonos updates. I do not trust them anymore.

So far the factory reset is working like a charm. Again I have the Sub and everything while on 14.12. So, the cure is to reset everything;)