Hi, Welcome to HTS.
Room interactions are a big issue and placement of speakers, or any audio equipment, can either make these worse or minimize the effect. It's possible that setting up as per http://www.realtraps.com/art_room-setup.htm may help. Room size is also another factor and a room which has dimensions which are multiples will be the hardest to control. There are online calculators that show where the problems may lie for any given room size eg:- http://www.mcsquared.com/metricmodes.htm
Hope this helps,
Bill.
Room interactions are a big issue and placement of speakers, or any audio equipment, can either make these worse or minimize the effect. It's possible that setting up as per http://www.realtraps.com/art_room-setup.htm may help. Room size is also another factor and a room which has dimensions which are multiples will be the hardest to control. There are online calculators that show where the problems may lie for any given room size eg:- http://www.mcsquared.com/metricmodes.htm
Hope this helps,
Bill.