Hi I'm setting up a home theater room and it's only until recently did I realize that items can be moved and upholstery added to improve the sound. I currently have a love-seat sofa in the middle of the room and a solid-wood table at the back, which is facing the tv and speakers. The speakers are placed at both sides of the tv. I also have two small speakers that are placed high up on opposite sides of the walls.
I have recently added curtains to my windows and a rug in front of the tv, but I still find that the bass sounds a little flat. I would like it to bounce off my walls, but how do I achieve that? Does the problem stem from the fact that my walls are hollow? So would soundproofing the room do the trick? I wouldn't want foam mats on the walls though so I thought maybe I could place a couple of rugs I have on the walls. Will that work?