I have two questions regarding layout and bass nulls.
First, I have this open space behind my sectional in my theater. I have considered a riser with seating, but it's off center and just doesn't seem to fit well in my mind. I think the total width, if I added a riser, would be about 90". I have considered bar seating, but that would be done at a later date, and I'm just not super excited about the idea. Does anyone have any ideas? The current plan is to just leave it open for whatever. I may just it as space to exercise with a workout video. Here's a mostly updated layout of the room (that side room will be a kitchenette in the future). What would you do if this was your space?
My second question is regarding bass. Below, you'll see a diagram of the bass volume in different parts of the room. The red is loud, the blue is quiet. Fortunately, you see that my seating is in a great spot, coincidentally. However, if I want to move my couch/sectionals back, or if I want to add another row behind me, I'm going to have issues. The bass in the blue areas is very quiet, I'm assuming due to the bass being nulled.
I haven't yet added my 4" broadband panels in the back of the room. I also have 2" panels the will added between each column. All panels are 3pfc rigid insulation like oc703. I do currently have 32" triangular bass traps in both front corners, and they helped.
How do I fix this problem? Is it as simple as adding another sub (in the diagram at the front)? If not, how much of the problem is helped by an additional sub, and what are my other options?