Cardas Speaker placement..

4ft from the middle of the woofer to the side wall and 6.48 from the center of the woofer face to the rear wall is what I get on their website.

I read a link years ago where people posted their set up measurements and I was surprised at the time to find how close together their speakers were and how close they were sitting...

Give it a try I really liked the Cardas method for my Maggies (when I had them).

The Cardas method puts your speakers very close together. Try the Vandersteen method, which in your room would put the speakers 2.9 feet from the side walls (1/5th of 14.5, measured to the center of the woofers) and 7.3, 4.4, or 3.14 feet from the back wall (1/3, 1/5, and 1/7th of 22). This would have your speakers 8.7 feet apart--pretty workable--with whichever distance from the back wall gives the most even bass response. Then stick your listening position 1/3, 1/5, or 1/7 into the room, whichever brings you closest to an equilateral triangle between you and the speakers.

Measure your room accurately in inches and divide by odd integers if you want to be really accurate. From your system pics it looks like you have a lot of flexibility with placement, so one of these combos should work. Good luck.

I like the Wilson method of voicing the room. Start with you back to the side wall and speak as you walk step by step away from the wall. You will hear you voice change as it changes it's interaction with the wall. So the same with the back wall. Place your speaker there. Then make adjustments based on what you hear from your listeninhg position.

parallelAll systems are starting points only. I have used the Cardas and then moved the speakers closer to the side walls. My GamuTs come with a formula that is complex enough for an advanced math class; I can't get them as far apart an they want in my room anyway. My room is 13'x35'x7' so I understand your problem; I would move them in at least 2' from the sidewall and possibly place sound treatment at first reflection point. Actually, I would treat the room no matter where I put the speakers.