Thanks for the reply. The subwoofer is behind my desk and on the carpet floor, about half a meter from where I sit. It is pointed towards me through the desk's downward facing wood plate, and to its left is a diagonal wall, while on its right it is open space. I actually tried shifting its position and direction - from pointing right at the wall (which in my opinion produced the worst "booming" effect), to pointing to the desk like right now. Should I try pointing it at open space?