Planar speaker placement

I am a little confused with your post . What factor has changed in this new speaker configuration v.s. your previous placement ? What aspect do you feel made the speakers disappear ? Is it the width between the speakers ?

The criteria to have them 10" to 12" from the sidewall is confusing . What if your room is 25' wide ? I think you are liking the greater space between the speakers ? Having that far apart gives a exceptional soundstage .

Here's one for ya !  I bought a pair of Quad 2905 last week . I also bought a bigger Torus power conditioner and some cables at the same time . I placed the quads on the inside of where i have my king Sound King speakers . Been listening to the Quads since i got them home . 2 days ago i started listening to the kings again and i was impressed by something i had done . I was not sure if it was the bigger Torus or the new cables that was making the improvement . I started to isolate the changes to see what is causing the improvement in imaging and bass . Turns out it was the Quad speakers being next to the Kings ! Expensive room treatments !! I will be mimicking the quads with either a absorption or diffuser the same size of the Quads .
Anyone care to venture why the improvement ?

"Is your phenomena being observed when the Quads are plugged in and when they are not? "

"What happens when the positions are reversed. Quads on the outside."

The quads do not have to be plugged in . I haven't tried reversing but I am curious .

I am starting to think the back wave is hitting the hard surface of the back wall and is getting blocked from my ears making the imaging clearer.

I posted a pic in my system page . I am in a new room as I just moved 6 months ago and have not done much experimenting yet with any absorption yet .

I picked up 27 sheets of Owens corning yesterday and will be making some treatments soon .