frequencies below approx. 80 Hz are not directional, i.e. whether such a signal comes from the back or the front of the sound stage, it will always fill all of the sound stage, and one can't localize the source of those very low frequencies, they're non directional, or are omni directional.

it's like saying one will never be able to say "hey, that very low freq. sound i just heard - or felt - came out the back of the room".

Last edited by J. B.; 04/28/13 09:29 PM.
See: http://www.blu-ray.com/community/gallery.php?member=Gelli
or: Axiom Gallery