My room is 13x19 with a vaulted ceiling. I sit about a quarter of the way in from the back of the room ( front and back width is the 13' walls ), i can move a little forward but not back, my (4) subs are all up front, a quarter of the way in from the front, they can come forward, but not back either.
So far this is what i obseved while using my OmniMic. Below 40hz, the FR does not change at all inregards to my three seat LP, even if i hold the mic and move through the seating position. Low frequency measuring is much more forgiving that above, so static measuring using the mic stand is out for now. Its almost like the mic isnt even moving, like a real steady pressure at the entire LP, but not flat, it has a +7db rise which is very consistant too, and responds to me EQing with my MiniDSP.....We all know nulls are nulls, cant be EQ'd out.....
Above 40hz to 100hz, the response changes foot by foot, center of the LP flatter than the two outside positions. It ranges from a dip to a true null, that cant be fixed other than sub location.
What is this dividing point im seeing