I have received with the TV stand an element to support a sound bar.
I have not installed it as I have my speakers built into the ceiling.
I'm sorry I can't give you more information.
Best regards
Olivier

The sound bar mount is quite large, I managed to install a sonos beam on it without any problem and without needing to use the mounting screws, however I can't find any compatibility information for the sound bars you mention, I would have to compare these bars with the one mentioned as compatible. I can only recommend this superb TV stand.