What you are experimentation now has yet nothing to do with DPoLS. You deal with the relatively rudimental ceremony of speaker positioning. It is not even close to the subject of DPoLS but it is also greatly neglected by majority of people out there. People with small monitors still deal with it in some ways, the people with large DIY horn intentions are deaf to speaker positioning (at least among what I was experienced). Toeing of the horn system is very tricky subject, particularly in a nearfiled. The “hole” in the middle and the back-image curve are also tricky subjects… I am glad that reading my DPoLS article made you to think and to look into it…. but it has, as I said above, nothing to do with DPoLS.