Hi there, Even if you can only have one bass trap, is that going to make a difference? If all I can afford for the moment is two bass traps for two corners of my four corner small room, is that better than nothing? If so, which corners should I choose, the corners behind me when I'm facing the desk, or the corners in front of me when facing the desk (one of the corners in front of me has a door BTW)? Or would a single wall to ceiling bass trap be preferable over two corner traps? At the moment I can afford one of these (corners, or wall to ceiling). Room is approx 12ft by 7ft. Wall I'm facing while at the desk (12ft) is concrete, wall behind me is concrete with small window. No wall to the left, just glass patio doors (would that be a problem?). Thin plasterboard wall to the right of me with a door.