Wasitpon, if I recall correctly, John Dunlevy wanted no toe in. He was wrong as I recall. The speaker's drivers are in a curve to have the voice coils in the same line. I always found toe in improved the sound stage.
I would think a minimum of ten feet from both speakers would be minimum. I once heard them at CES in Macormick Place in Chicago in a 50' by 30' by 18' reinforced concrete room where we listened about 25' from them. I never heard them any better.
Measure the distance from between the woofers, which I think is where the tweeter is. Multiply by 1.65 and make that the distance to the side walls from the center of the speakers front panel. Multiply that distance by 1.65 and that is the distance from the front of the speakers to the back wall. Remember that if you use feet under them, you have to redo these calculations.
