While I agree with everyone, I would like to second, or third, the value of speaker placement. Get those speakers out (on stands, of course) from the rear wall three times their depth, minimum, and spread em apart as far as you can without exceeding the distance to your listening position while keeping them two times their width out from your side walls. And, put your listening chair at the apex of an imaginary triangle with your speakers (imaginary, hell, measure it, measure everything). A little longer may be preferred at the end of the day, but shouldn't be by much.
And after you've had this much fun, trying toeing your speakers out 10 degrees or so from head on to your listening position. Last, but not least, clear the wall behind your speakers and side walls of any bulky furnishings. I imagine that they're might be some dissagreement on this, but do try it for yourself.
And after you've had this much fun, trying toeing your speakers out 10 degrees or so from head on to your listening position. Last, but not least, clear the wall behind your speakers and side walls of any bulky furnishings. I imagine that they're might be some dissagreement on this, but do try it for yourself.