Hi Chashas, my room is 14 x 24 x 9fts. I had Thiels 3.6 before and there were no problems. After I got ShL5, I found the mid bass overloading in the room! I then started trying room treatment. I finally got very good bass by treating the ceiling and the conners with funitures and traps. I think Thiels has tighter but thinner bass while the SHL5 has fuller bass but very addictive once got right!