I have no idea why I was thinking of theater/opera but point noted.

I've rarely come across any speaker even of the $150 variety that could not place the instrument families in the proper place - my B&W 302s which were $225US could do that.

What is more bothersome to me are the speakers that do a "better" job of it but only if your head is placed just so - if I move my head and the stage collapses it takes me out of the event. Something that certain designs do often is require a head in the vice experience.