TONS of good advice here. Wow! So glad that most posters actually understand what is going on here.
While most all are on point, @misstl has a superb post. The "more info needed" posts are also on point.
As a former dealer who set up MANY pairs of Maggies in MANY types of rooms, please read these posts and CALL YOUR DEALER. He or she is going to provide the most appropriate help for you since a visit to your room is key.
Best of luck--no box is as accurate as Maggies, so keep working on it. Hopefully your room will be able to handle them.
Cheers!