I have the exact same issue. When playing a Dolby Atmos Youtube demo or a Streaming a movie with Atmos - I hear very little sound from the rear speakers. I just installed this last weekend. I've check and have the latest firmware. I literally have to put my ear to the speaker to hear anything. It's not a connectivity issue as I do hear something. It's just very low... and I've also gone into the settings and boosted rear speakers to 6.
Soundbar is connected via HDMI ARC to my OneConnect Box. Clearly something isn't decoding correctly.
Just purchase HW-Q90R Soundbar week ago, but after doing some settings, firmware update and volume calibration, I found out that the both rear speakers volume are too low. I haven't tested the Dolby Atmos yet (because my TV is not supporting), but when I playing music or movie, I really need to put my ear close to the rear speakers to be able to hear the sound.
Anyone have the same experience?
I haven't buy the HW-Q90R yet as I'm still reading reviews such as yours. What you're describing sounds like it's a known issue and Samsung have a software fix for it. Samsung described it as "no sound" as opposed to "low volumn" in the way you have seen, and I don't for sure if the "no sound" actually applies to your case also. I don't remember where I read it, but some people said they had to update using USB to make it work. Below link is what Samsung had to say what seems to be your problem. Good Luck ... It's a nice soundbar if it works.
YES! Me too. Soundbar is brand new, plugged it in last night, updated the firmware and .... almost NO sound comes from rears. A bit, but only if you put your ear to it. I have it turned up to +6 (as high as it goes, why '6' I wonder?) and you cannot hear them, or can barely hear them.
This is pretty dissapointing.
Is there a setting to 'force' sound from the rear speakers to play?
Why can they not be turned up?
The sub is pretty quiet too, but the rear speakers barely add anything at all.
I came here from searching the internet looking for answers to the question 'why are my rear speakers so quiet' and 'my new Q90R soundbar rear speakers are too quiet'.
I look forward to an answer about why this is, and what setting I would need to adjust to at least get something played in those rears? It's very frustrating.