I'm pondering where to place my Klipsch 10" subwoofer. One thought was parallel and to left of my media cabinet, 4 inches from the rear wall, however, the arm of the couch is about 18" in front of the sub (photo attached). This is probably a silly question, but will the couch be more or less blocking/absorbing the bass? Should I angle the sub toward the center of the room, or perhaps flip the sub to the other side of the media center (requiring some other furniture to be relocated?