Hello, Weird issue. I have LogiTech Z906 and connected it optically. Last TV used Coax but new TV I have does not have this so bought optical cable (20ft).
I go though setup and it does not detect however I'm able to manually pick it from the list.
Once picked out, it seems to setup successfully and even remotely controls the volume and power for the Z906. However shortly after, there is some very high pitch noises barley hearable for me but kids seem to suddenly cover their ears and complain. And then says disconnected. Also every pause in audio turns the speakers off and then back on again when audio continues resulting in some annoying delays.
Now the audio continue to work through speakers but TV can no longer control it. Almost like the audio continues to feed through optical port but no further communication between speakers and TV.
I've kept it as such and used 2 remotes to control things and simply selected the TV speakers and set to zero volume so that it would not continue to make connection every few minutes that drive kids crazy. Hoped an update would fix this however it has not. The audio still works going through optical and speakers are not being powered off/on.
TV is 85 inch TU8000 series (UN85TU8000FXZA)
Thanks. I do not recall any option for bitrate on TV settings but will look for it. I see you mentioned "Logitech output" but its a surround sound and lacks any control so believe your referring to the TV settings with Logitech label. As both the TV and the subwoofer have no documented max length for optical, best I found is general limitation of 10 meters (32 feet). I may be able to go with shorter cable. TV is ceiling mounted and subwoofer is on the ground so will be tight as it needs to route around from bottom of TV to ceiling and back down the wall. Also as mentioned, audio bitrate does not seem to be an issue as the sound is fine. Just the integration.
How did you manage to control the Z906 power with the TV remote? Do you press any special button? When I switch off/on the TV, the speakers stay off/on.