Depending on material, soundstage can be wider and deeper than the room and instruments can be located with accuracy as to their placement. Sometimes stuff even sounds like it's behind you.
I use my own creation which include JBL 2241H (18"), JBL 1151J (9-1/2") and a modified Great Heil. The crossovers are of course of my own design.
This is an older video with some crossover mods done since, but you can see what we are dealing with. Of course don’t expect a YouTube captured on a Nikon DSLR video to image.