If you have not got it look for the Roger waters cd amused to death first song if I remember correctly called too much rope. It was recorded in Q sound a room done right you are in for a sound stage treat. In my old house with my active bi amped Maggie's and the help of an old friend with a pitch perfect ear the sound stage depended on the recording but with the right recording the stage was wider than the side walls and as deep as across the street and so good that you could hear or feel if the performer was moving there head while singing. This was on a normal recording not the Q sound I talked about above. It is interesting how much is available in sound quality when you think in the terms of my speaker is a 32 second of an inch out. That brings resolution out and focus out as well. It is much easier to hear with the nore resolution your system has and the little changes done correctly are stunning. I personally like diffusion better than absorption I like the alive sound. That being said absorption or at least some is very important. In my new room I have a decent basic setup but I know it needs the two years of tuning a tiny bit here and a ting bit there. Each little change a person needs to listen to for a few days. One thing that I have found works well on the wall behind the speakers I'd a sheer curtain it should be close to floor to ceiling the amount of fold in the curtain and where they are changes the stage. More treatments are need o n that wall but your system will not sound as muddy after a person does that. Funny how a person doesn't think it sounds muddy until you take some of it away. I actually love the free improvements to one's system it just takes time and listening to accomplish. There's a bee gees live cd with sound number seven that they dedicate the song to Andy the crowd is stunning on that diec. And that sound in particular. A livingstone Taylor discovered where he whistles that is also a stunning disc and the sense that he is right in front of you and you can go up and shake his hand is wonderful. I believe that is a chesky recording. A friend pf mine I had over and he listened to my main system and he brought over a disc for the Mormon tabernacle choir recorded in the temple at Salt Lake that is an absolutely huge sound stage and I am not perfectly setup yet. Quite interesting I went to another Mormon friends son's funeral that was sad young fellow with three little kids anyhow first time I had been in a Mormon stake it was very interesting to look at the inside from an audio file stand point the walls were all treated with mainly diffusion when I talked to my friends afterwards the mother told me that everytime they build a new church there is an acoustic engineer involved. If you ever get a chance worth your while to look at what they have done acousticly. Interesting I went to support my friends and help them grieve and by keeping my eyes open I was able to use some of what I saw for my hobby. You fellows who live in cities with world class performance venues have a great resource both in hearing the music live and looking at how they are accomplishing there sound quality. A very nice bonus of living in a big city.
Regards