what kills soundstage depth?

Sorry for any confusion caused, but I accidentially posted supplemental comments on your system thread with the photos.

add tube? tube is known to improve soundstage depth

Hi, nice setup, and yes you should have depth "if" it's on the recording. What kind of music are you listening to?

One more thing I'd try is a big quilt over the TV to see if it's contributing or not. (in addition to all your other good comments above) Speaker placement first though.

Cardas has a nice guide posted, might be useful: http://www.cardas.com/content.php?area=insights&content_id=26&pagestring=Room+Setup

Final though, is everything new? might need some breakin time...

When your speaker is close to the wall behind it, the depth perception is minimized. Pull any speaker (and I mean ANY) forward and you'll hear (see) more depth. Personally, I could not give a rat's ass about soundstage. I NEVER think about that when I'm at a live show-why should I care with my hifi?

Easy - now you have posted photos - the speakers are too far apart. If you want
depth then get them closer together - the way you have them is too much like
headphones (think headphones put the depth flat - sounds in your head). Each
ear must be able to hear BOTH speakers directly (and the funny flab of skin
around your ear plays a big role here and performs best with sounds from in
front rather than to the side)