Hi All, I have a powered sub with my system. For space considerations, I use a printer stand for my receiver to sit on top, and my subwoofer sits in the open cabinet area below. The stand is made of pressboard. There are no legs on it. It sits on the floor with its three walls (back, left and right) resting on the ground. The sub sits on the bottom shelf about 4 inches off the ground. I am wanting to purchase a nice A/V Rack to make it look a lot more presentable than it is now. My question is, should I have the sub directly touching the floor to get the best sound, or is having it elevated the way it is now the best option? Keep in mind that my home theater rests on a slab floor. No wood. Since the idea for the subwoofer is to push air outward and towards your ears in order to get that booming LFE, am I creating a pocket of air with it elevated off the floor? I am thinking that if I placed it directly on the floor, it would absorb some of the shockwave, thus reducing the effectiveness of the LFE. What is your opinion?