I don't know these speakers but it was interesting...I have been experimenting with NBLs and toeing in... at about 10 degrees, vocal sounds were rather too forward and sibilant in my room... by easing back to only about 3 degrees the speakers were firing more straight down the room and this small change of position ...a matter of a centimetre or two made a huge difference... everything is sounding a lot more balanced and I think I have found about the right spot now.
Of course every listening room is different ..so my advice would be...try different positions and angles and remember that a small movement of just a centimetre can make a big difference....its a case of try it and see in your particular listening environment.