It will make a huge difference. I had to do the same thing. The only problem is that there isn't a lot of information around about placement diagonally. So, you have to do a lot of experimenting, but like you I felt the difference it made was very unbeleivable.
I hear that's what speaker designers do at shows when they have small hotel rooms. It should work equally on floorstanders.
I hear that's what speaker designers do at shows when they have small hotel rooms. It should work equally on floorstanders.