The problem with this approach is the best it can do is flatten response at one location. But this comes at the cost of worse response at other locations. Not to mention all the problems inherent in equalization itself.
By far the better approach is to take whatever money you're thinking of spending on EQ and treat the room and speakers with HFTs.
By far the better approach is to take whatever money you're thinking of spending on EQ and treat the room and speakers with HFTs.