Got to agree with Onhwy61. Positioning is number one. Consider all the angles of your speaker orientation, do they aim up down or straight ahead, toed in or straight, different heights if possible. Try them farther from and closer to the wall than you might think, especially if you have a sub. Position yourself, be aware of reflections from sides, back and coffee table especially where the sound travel path will have a difference of less than 5 ft. Try the differend phase switch positions on your sub. Then, in two months or so, you can worry about the things that cost money.
