My experience with two Nestorovic type 8 passive subs was:
Flatest responce, best sound, was the two subs in the corners but 4-6" out from rear wall and FACING (firing towards) the rear wall. Mile Nestorovic has always said facing the rear wall gets the best sound but had recommended 2 feet from the corners. Each sub is slanted for time aligning I beleive and has 2 12" speakers. They cover from 200hz on down to about 20hz. Radio shack meter and Rives test cd were used for measurement. I did not try every concievable position but many.
Flatest responce, best sound, was the two subs in the corners but 4-6" out from rear wall and FACING (firing towards) the rear wall. Mile Nestorovic has always said facing the rear wall gets the best sound but had recommended 2 feet from the corners. Each sub is slanted for time aligning I beleive and has 2 12" speakers. They cover from 200hz on down to about 20hz. Radio shack meter and Rives test cd were used for measurement. I did not try every concievable position but many.