Room Treatments and WAF? Long

Ckoffend
Plants? Wife loves plants. Great idea. Thanks! Not sure on the curtains but will work toward them or fabric covered slats as recommended below.
Herman
I have very limited knowledge (don't have any idea how a room interacts) about these things but keep reading about 1st reflections. Will have to do some research on the Eighth Nerve also. Interesting.
Shadorne
Just learning about room treatment and first reflection seems to be something everyone recommends. Can you help me understand why it is less of a problem on a 23 ft wall?
Listening position is 12' From the front wall.
Would have to do some creative communicating to be allowed moving the h/t in front of the fireplace. Fireplace is just in front of the listening position. Sounds like my rear wall is where I can make the most difference. Thanks!
Mrjstark
Highest point is side to side. Yeah, I think I do have some significant problems. You mention balance/seperation regarding the side walls and I think your on to something. I have noticed when listening to music the right speaker always seems more prominent. Would have expected the opposite. Does it make sense?
Different room not an option. I am ready but it will be a series of compromises and I feel sure the best I can do will be minimal but that's better than none at all. Appreciate the help.
Rives
Couldn't find the absorption films at RPG. Looks like they have a nice selection of products and some may work for me. Thanks for the suggestion.
Went to your site. All I can say is WOW! You have done some really nice rooms. Wish I had seen this before our remodel. Would have stolen some of your ideas. Still may.
I really do appreciate all the support and info.
Steve

Shadorne,
Thanks for the explanation. Just trying to learn a bit.
Destep,
System:
Denon 2802 Pre outs for mains to
B&K Ref 20 (recently ran the cd player direct to the B&K)
Bryston 3bst (Mains)
Arcam Alpha 8Se cd player
B&K 5 channel amp for rear surrounds and outside
Gallo Ref 3.1 mains
Velodyne sub
Regarding what's sounding bad. Soundstage seems constrained to a small window between the speakers and a bit toward the right speaker. No depth. There are times I feel like I hear sound from one speaker and just an instant later same sound from the other speaker. Like an echo. Thought this might be due to left wall being solid while the right is open.
Hope this gives something to work with. Any more questions, just ask. Love getting this kind of support.
Steve

Dcstep
Checked out your link. Sounds really impressive however no one local to do something like this.
Did listen to your first post suggesting positioning speakers. Amazing that the smallest adjustment can make such a large difference. All I did was toe the speaker in a bit and the soundstage got noticably larger. Have a lot more to do but this did show me what can be achieved with a bit of trial and error. Link emphasized it even more. Thanks.

Mrjstark
Thanks for sticking with me on this. Your right that bookshelfs between the speakers will not work but may be able to use something like the oriental rug or diffusers.
I'm guessing there is some confusion about side wall reflections. Left wall is full height and right is short. Are you saying that the right wall is the reflection problem? I haven't addressed this problem with the wife but I believe we can come up with something agreeable for diffusing the reflection.
Should have mentioned this earlier regarding the left wall with the fireplace. Fireplace extends roughly three feet into the room from the side wall. This creates a cubby on each side of the fireplace. Speaker to side wall is approximately 7'. The fireplace is about 2' in front of the speaker and roughly 4' to the side. Beginning to see this could make a big difference. Sorry!
You, and most others seem to think curtains, blinds, etc for back will be the most effective. Hope I can get this approved.
Thanks again for all the help and suggestions.
Steve