Marty:
As the others have already noted, your problem is almost certainly due to room/acoustic problems. Your room is fairly large, asymmetric, and plagued with a wall of glass, so there are a number of factors which may be contributing to your dissatisfaction.
You could spend weeks trying various solutions, but this is one time I'd really suggest spending some money and hire the services of a good home theater guru. Do a little research and find out which store / HT consulting service has a good reputation in your area, and engage their services. My bet is that you won't regret getting some expert help. If the advice you get is too expensive to do everything at once, then tackle the problem incrementally, starting with the changes that will make the most impact.
As the others have already noted, your problem is almost certainly due to room/acoustic problems. Your room is fairly large, asymmetric, and plagued with a wall of glass, so there are a number of factors which may be contributing to your dissatisfaction.
You could spend weeks trying various solutions, but this is one time I'd really suggest spending some money and hire the services of a good home theater guru. Do a little research and find out which store / HT consulting service has a good reputation in your area, and engage their services. My bet is that you won't regret getting some expert help. If the advice you get is too expensive to do everything at once, then tackle the problem incrementally, starting with the changes that will make the most impact.