Funny you ask corelli as I've been using Jim Smiths room techniques this weekend to really dial in my listening position and speaker placement. My room is 13.5'x17.5' with a 6' opening between and behind the speakers opening into a 13.5'x7' room that houses the components. Ceilings are low at 7.5'. I have 2'x2' floor to ceiling bass traps in each corner with quite a bit of room treatments throughout. Right now my speakers are 64" on center with my listening position 77" from tweeter to ear. Toe in has back of speaker 3.75" further from center line than front of speaker. Both speakers are perfectly level to one another. Without trying to the speakers are nearly one third into the room with the listening position nearly one third from the back wall. I guess the one third rule does work! I could continue with some further adjustments in the 1/4-1/2" range but I'm happy with where everything is now. Sidewall to sidewall soundstage that is deep, a warm and thick center with gorgeous tone, beautiful bass, airy highs and the speakers simply disappear. My work is done!
Having gone through hours of "working the room" it was worth it but the sound is not greatly improved from what it was as I had things laid out pretty well before and Tekton speakers aren't fussy about placement. They will sound very good in just about any situation, I just like getting that last last bit more out of them.
Should you wish you can check out pics of the room in my virtual system page. The speakers are no longer toe'd in as much as in the pics though.
Time me to listen to some Holly Cole and then watch March Madness.....GO BLUE! GO STATE!