That is very close to a square room along two dimensions and is going to really give a boost at about 47hz. The room is probably playing a one note tune of its own at about f#(fourth black key from left on a piano) and multiples thereof. I've never tried to tame such a room w/ traps and stuff. I kind of doubt you can get enough(traps etc) into a room that size. There might be so much boosting that it is interfering with everything else and the room is small enough that you are getting reflections from all over which is often tough on imaging. There might be an electronic way to help. Rives Audio sells something along those lines. In any event, these are serious problems that are going to exist for any speaker. Small rooms with common dimensions can be very tough.
On other hand folks like Gunbei above have a fairly small room and pull it off.
I remain,
On other hand folks like Gunbei above have a fairly small room and pull it off.
I remain,