Well I have found 2 locations that seem to give pretty good response over the 8 seats. I'm putting one sub along the bottom wall, in the middle. The other sub is going along the east wall, about 38" off the corner.
I have measured, and remeasured...I loved the response I was getting with both subs by themselves, but when I added in the main speakers, it threw things off a little...so I adjusted them slightly...
This is what I'm getting now, pre BFD. The charts will start at the leftmost seat on the couch, and go right. 8 seats total...
Left 4th seat out:
left 4.jpg
left 3rd seat out:
left 3.jpg
left 2nd seat out:
left 2.jpg
left middle seat:
left middle.jpg
right middle seat:
right middle.jpg
right 2nd seat out:
right 2.jpg
right 3rd seat out:
right 3.jpg
right 4th seat out:
right 4.jpg
Can you guess which seat I'll be sitting in?
Next I'll guess I'll measure each sub separately at all seating locations, try my hand at some filters on each sub, and then remeasure together.
Oh, another thing. The eastmost sub is set at 130 degrees phase while the one in the middle is set at 0 degrees phase. the couch is pulled 13" off the wall.