A few years ago everyone was pumping line source speakers as imaging champs, like the Pipedreams and such. They imaged very good side to side and front to back and had dynamics like a Klipshorn, but the size and scale of the image was way too big (as Jax2 said). Picture a 3 foot wide nose on the singer "standing" in front of you. Not realistic at all, after all. I know there have been strides made to reduce this scale problem by tapering the response of the drivers at top and bottom, but it is still a bit spooky to my ears and not really natural.
Bob
Bob