Distance from the front not the rear wall?

Tiofelon,
Welcome to the subjective(but fascinating) worid of High End audio. there`s a modicum of "right" or absolute answers, i.e. tube or solid state, digital or analog, silver or copper etc. If possible try moving you listening position and compare the differences, it`s the only way.
Best of Luck,

Tiofelon, yes try and give the method I linked to a try . What led me to give it a go was the idea that it works well in rooms that do not have any or much room treatments. My system, like many others I expect. Is not in a dedicated listening room but in my living room and both my wife and I agree that the large diffusers and absorbers etc wouldn't be acceptable( plus the expense!)
But what is possible, with my speakers at least, was to install some Herbie teflon gliders and when needed( critical listening) to pull the speakers into the middle of room. At other times they stay closer to back wall.
Here's another link to a review of method.
http://www.soundstage.com/audiohell/audiohell20011

Sorry try this:
http://www.soundstage.com/audiohell/audiohell200111.htm

The Audio Physics method (Immediasound) has worked extremely well for me when I used it in smallish rooms. Having the chair within a foot or so, or even against the untreated rear wall was not a problem. It also allowed me to pull the speakers further into the room. I find the method works best with long wall placement of the speakers, which is my preference anyway. However, I suppose that's another bone to pick as most people I know prefer short wall placement.

I too prefer long wall placement.