Wilson Audio Sophia III Question/Help

Dear friends,

I have recently found the chance to upgrade my speakers to a pair of Wilson Audio Sophia 3's. They are driven by a McIntosh MA8000 (300w p/ch SS amp). Although the details in music, huge dynamics and being able to hear more layers into music have been a stunning experience for me with the Sophias, I am a little troubled in a very basic area of stereo image reproduction.

First, some information on the setup: The speakers are 7 feet apart and the listening position is approx 9 feet. However, due to limited space the speakers have to sit less than a foot to the back and side walls (I have installed Vicoustic Flexi wall treatments on back and side of the speakers) The speakers are on spikes and currently toed in 15 degrees. (I have experimented with 0-25 degrees toeing in). I listen to mostly Rock and Jazz music.

I feel like the center image/presence/focus/impact is not strong enough in some recordings. It feels like the vocals are too laid back when there comes a loud orchestral/dynamic passage. It just feels like I need to pay more attention to understand/decode what the vocalist is saying... In vocal-oriented music, Jazz audiophile recordings, etc, there is no such problem, yet sometimes I still feel like the vocal is not pinpoint center but a little dispersed in between the speakers. The traditional solution would be to toe in the speakers more, but then Sophias on direct axis tend to draw attention to themselves, which make the sound coming from left and right more apparent, contradicting with my purpose of strengthening the center image. It just feels like the sound is diffused - perhaps too wide soundstage than I'm accustomed to... I don't think I have trouble with boomy bass which curtain the mids by the way. I am sure the room acoustics are in play here, yet I did not have a similar experience with the B&W 804 speakers I have used in the same place before, they have had strong center fill, pinpoint phantom image in the center with a decent soundstage. I feel like the Sophias are rendering much more information from music, they offer higher resolution and transparency yet I cannot get them to sing as they are supposed to - missing some of the very basic attributes in stereo. I knew that Wilsons are picky in room setup but I have been experimenting for days and don't have an alternative space to move my hi-fi.

I'll appreciate any comments and suggestions.
Thank you.
Wilson set up instructions call for you to sit a distance away equal to 1.1 to 1.25 times the distance between the tweeters so it sounds like you are close to that. Toe in should be so that you can barely see the inside of the cabinet from your listening position. The right  tweeter should be directed at the right ear and the left at the left ear . The speakers should be placed in the zone of neutrality re the wall behind and beside each speaker. I think you should experiment with toe in while moving the speakers closer together. That alone should solve your center fill problem. 15 degree toe in is definitely a problem. When you dial it in you will know it because you will get a better center fill, the speakers will disappear as source points AND you will get a wider and deeper soundstage.  In a way it's anti-intuitive, but it works.   
Dear all, thank you for your responses!

@james633 I believe you've spotted on understanding of my confusion. I feel like I need to pay more attention to listen to the vocals now, which keeps me from enjoying the music. Perhaps, my ears are still adjusting from the forward vocals of my previous speakers. Actually, I had set the Sophias tilted forward - using two pieces of spikes on the back feet and only the first short piece on the front. I thought it helped a little but the speakers looked so weird and I thought that the Wilson engineers must have a reason to tilt the mid and tweeter backwards therefore I put the front spikes back. I have also tried a shorter seat as well as putting some pillows below to increase height - which made me question myself and my hobby =) I will keep experimenting, thanks for your response now I feel like the problem is partly due to setup and partly the difference between two speakers with different sound signatures/specifications.

@shadorne I agree, it is a huge problem which I tried to resolve with putting isolation on the back and near walls for at least helping with the side reflections. I guess the 804's having a curved body and narrower body and depth gave them a little more room to breathe and as a result they dealt less with side reflections better. Also the strong (maybe artificial) midrange helped me to ignore this problem until moving to the Sophias. Alhough I cannot permanently place speakers closer to each other because of the equipment rack partly in between, I will experiment and see if it helps. Replacing equipment racks would at least be a feasible solution, thank you.

@jafant Thank you for your input, I will definitely try moving the speakers closer and keep experimenting this weekend. It is a little harder to move the Sophias around, being 165lbs each - compared to my previous speakers less than half the weight. I guess doing some exercise is always good! I'll keep you posted.

@gpgr4blu I have tried toeing in the speakers more, but somehow it feels not it is not helping because the Wilson tweeters on axis are too hot for my taste. The paradox is, with 0 toe in, the soundstage is bigger and the center image is somehow decent - the speakers disappear more in my understanding of soundstaging. As I toe in the speakers towards my ears, then it feels like two speakers are firing from left and right which I guess curtains the center fill - although it should theoretically get stronger with the toe in process. I prefer the off-axis response but then the center fill is softer than my expectations. Also, I am used to seeing in Wilsons toed in a lot, compared to other brand therefore I should be missing something. I will keep experimenting with different angels of toe in, thank you.

@pops I have some experience with near-field monitors when I was producing music for a while in the past. Considering that Wilsons are used in some studios I will certainly try and experiment with a nearfield listening position after I move the speakers closer to each other, thank you for the thought.

I will keep you posted as I continue my experiments. Meanwhile, do you have any comments on the McIntosh SS & Wilson combo sound signature? Thank you all for your valuable input. Have a good weekend!
I own S3s, and agree that  a foot to the back and side walls is too close.

You can try changing resistors to raise the level on the midrange and tweeter.