The problem MAY have been that I updated the ATV to tvOS17, and possibly the ATV CEC setting (Home Cinema Control) was (re) set to On.  I turned it off, and things seem ok, for now.

I'm using the 2 PUC options for my set top box, and Blu Ray player. Will have a think about exchanging the ATV for the BR player, PUC wise.

 

I raised a support request as the difference in volume between some programmes is as much as. +/- 10 volume increments to maintain the same sound volume.  The following was sent back:

”We have received feedback for our supervisors and would like to share the following with you, in the last software release there is a "small Dolby bug" that has been fixed and as such will result in a larger volume difference between PCM and Dolby signals.
 
We are working on a setting in the app, so it is possible to adjust the gain for each source, but we can't control the volume difference in the different TV stations audio volume broadcast. This has always been an issue, here in Denmark as well.”

I rolled back to SW 2.5.5, as the audio processing (with DD 5.1) was so bad on 3.2.1.

And back on 2.5.5, everything sounds right again - especially with DD 5.1 programming.

I don't believe the 3.2.1/5.1 issue is just about quiet volume - the overall processing of the channels seemed wrong too, with very little coming out of my attached speakers.

As soon as I rolled back to 2.5.5., it all sounds great again.

I'd be concerned if they are just looking to address this with a user "gain" setting.

 

Hi Sandyb,

I'm also concerned if the solution they are working on is just a "gain" setting.

I noticed that the sound level changes tremendioulsy from one TV channel to another, so a setting based on the source will not help.

In my opinion, changing volume when changing the source is less annoying than changing it when changing from one channel to another.

So the solution which seem sto be in the pipeline is not adressing the source of the problem. It's just a a bandage on a wooden leg.

BTW, how did you roll back to the previous version of firmware?

Kind regards,

Yann.

 

 

 

Well whatever you do guys. Don’t factory reset your theatre in the latest software version. This problem wasn’t present on my theatre. Untill I got some problems with my Beolab 28’s room compensation.

After some testing I decided to factory reset everything just to begin from scratch again. Seems after the factory reset the theatre indeed has a bug in DD 5.1 content. Everything else is fine. Need to crank up the volume with DD 5.1 content to like 60 to be audible and the channels are quite mixed up and it just doesn’t sound right. However Atmos DD+ of PCM2.0 up mix all sounds good with lower sound levels. However before the factory reset I didn’t have any of these problems with version 3.2.1 / 3. Quite strange and really buggy software in my opinion.

I’ve asked my dealer for a downgrade on both the beolabs 28’s and theatre to atleast 2.5.5. I would like to know how to do this myself aswell if there is an option for this?

 

 

 

link

Well whatever you do guys. Don’t factory reset your theatre in the latest software version. This problem wasn’t present on my theatre. Untill I got some problems with my Beolab 28’s room compensation. After some testing I decided to factory reset everything just to begin from scratch again. Seems after the factory reset the theatre indeed has a bug in DD 5.1 content. Everything else is fine. Need to crank up the volume with DD 5.1 content to like 60 to be audible and the channels are quite mixed up and it just doesn’t sound right. However Atmos DD+ of PCM2.0 up mix all sounds good with lower sound levels. However before the factory reset I didn’t have any of these problems with version 3.2.1 / 3. Quite strange and really buggy software in my opinion. I’ve asked my dealer for a downgrade on both the beolabs 28’s and theatre to atleast 2.5.5. I would like to know how to do this myself aswell if there is an option for this?

yes, and you are not alone, as a number of people have reported the horrible sound image with DD 5.1.    It's been reported to B&O.  I got my Theatres rolled back to 2.5.5, and all is well again with DD 5.1.

One of the B&O guys posted the below on Discord about this issue :

The issue with DD5.1 volume being low is something that is actually not a SW bug but rather a decision made by acoustics to remove the dB boost in order to have proper sounding PCM 2.0 upmixing. In the upcoming 3.4 release we plan to give you the option to manually adjust these dB levels so you can tailor it to your needs. As already written elsewhere, I will let you know when this is available for testing."

(me again) - this is kind of what I expected.  In 3.2.1 they fixed the pre-existing issue with PCM 2.0, but in doing so badly compromised DD 5.1.    Whether the options they are proposing in 3.4 mentioned above will bring DD 5.1 back properly remains to be seen, but let's see.

Its puzzling that we've gone from an audio engine (on BV's leading up to the Theatre) which could happily handle 2.0 / 5.1 / 7.1 without the user thinking about it, to a situation now (Theatre) where after a year the audio engine can't do all of 2.0/5.1/7.1 properly.