Speaker Placement

Ok Srafi,
    Thanks for the answers,  here you go,  this will get you a soundstage...
Speakers..... 3ft off each side wall.... 4 ft off the back wall.  This should place them approx. 10ft apart.  Listening Chair.... 9 to 9.5ft centered in front of your speakers...  You will still need a throw rug On the floor in front of your sitting position and you will need something to dampen the wall behind your sitting position.  A curtain or rug hanging on the wall should work wonders. Measure the distance between your midbass phase caps, this should be the same distance as your markers on the back of the chairs. (explained next)  This should leave around 7 ft to the wall behind the speakers.... Sit in your chair,  Put objects on the back of the chair approximately 6 inches on each side of your head is as markers... so, you'll have 2 phones,  2 calculators, 2 butter knifes,  what it is doesn't matter.  These will mark where you point your speakers.  Tow your speakers in to point directly at these 2 points.  The tow will help tremendously on getting rid of interactions with hard side walls. .  If you have any mid or high frequency peaks, start moving your tow outwards, be aware, as you get close to speaker dispursement properties hitting your wall, this will effect frequencies and sound stage. 
Overall, this will put your very close to where you need to be and will pull a soundstage.  It will not compensate completely for all room problems,  but the rug and padded rear wall along with the carpet on the front of the room will help tremendously. 
10 ft away is a good distance.  After listening for awhile,  I would experiment with padding on the ceiling between your speakers and listening chair.  I hope this helps,  Tim

Sorry Srafi,  my fingers are faster than my mind... that was the chairs between your speakers and sofa need to go.

Issues of this caliber normally mean that you are dealing with room issues.  A properly damped room goes a long way to correct the tonal balance issues.

Also,  in any room,  if you have a peak or dip due to room interaction, as you turn it up,  those anomalies grow substantially...  

I can't tell much of how your room looks from that video,  but tow in is a different animal as far as tonal balance... a full tow pointing at the ears should be as close as you can get to the actual frequency response of your speaker. As you turn the speakers outward, you star rolling off the top end - mid,  the farther you turn toward straight, the more you roll off the top,  at some point,  you will start dealing with the interaction of your speakers dispersion bouncing off the side wall and that will also effect your tonal balance along with the top end roll off.  Then with panel speakers or baffleless designs, you have to deal with frequencies being projected from both sides of the speaker.  With these 2 designs, you have much more room interaction to deal with.... My post were mainly directed to the Op who is using a standard baffle mount drivers with his B&W's