Help me figure out a solid sound bar for a rolling TV stand
I have a 77" LG G4 TV on a FITUEYES rolling TV stand. You can see what it looks like here: https://imgur.com/a/OKKPRDm
I like to keep the TV/stand where it is in the photos when I'm playing a game or watching something solo, but I occasionally roll it to be in front of the backdoor when I have a group of people over and we want to watch something together.
I'm looking for a sound bar with good audio for gaming and movie/TV watching when the stand is in either position.
I'm considering wireless speakers, but unsure where exactly I'd put them, so a sound bar is likely the better option, but I have limited space available. On the TV stand, if you look at the photos, there's that brown piece just below the TV. I can move that up/down, and can place a sound bar there. There's about 40" of width there, and 5.5" of height. I might be able to get more height by moving the PC/Xbox forward a bit, but I haven't tested this (I don't want them sticking out over the shelf they're on). I could also potentially move the PC/Xbox to the higher shelf and put the soundbar on the bottom shelf, which would provide more width if needed, but I think I'd prefer it up top so looking for something that's 40" wide or less.
Any suggestions? I'm open to spending decent money if a really good option pops up that fits my scenario.