Ideally, yes, you're going to have, and already do have, tremendous bass response challenges in that room! (if it's a closed-in 10x11x9!). IF those are the true boundary dimmensions, you'll be hard pressed to not have a boomy sonic signature bellow 50hz, with peaks and dips a plenty! Why is this a challenge? The sound will ALWAYS sound like a SMALL ROOM BOOMY, PEAKY, ONE-NOTEY kind of sound unfortunately. If you use more bass limited monitors you're better off, and maybe add a CAREFULLY PLACED subwoofer to augment, included in VERY WELL CONSIDERED seating possition!
YOu'll have like one choice in that room that will sound LISTENENABLE (Maybe) for your speakers, and also a listening possition...nothing more. The Dunlavy's have a tiny advantage in smoothing your your bass problems, in that they have bass drivers in multiple planes(or two), as compared to speakers with one bass driver in one plane, etc.
HOWEVER, you could definitely(have to tinker) get rid of your problems here DRAMATICALLY if you BIAMP your SCIII's and put a parametric EQ on the bottom posts/woofers!!!! This will allow you to FLATTEN the bass response greatly, and thus get rid of the small room sound tremendously! Of course you'll need to adress other acoustic issues, and keep the room on the LIVE SIDE!...as small rooms are easily made more DEAD sounding with too much absorbtion.
There are other speakers you can get away with putting an EQ on the bass woofer, like a lot of 3 way designs. (B&W 804's, NHT 2.9's, Hales Transcendence(?), etc), all which might be very effective if set up well and EQ'd in your small room! This really is a must for you if you go the full range speaker route in your room.(again, if it's what you say it is).
You could however find some more managable, less fuss kind of sound in smaller monitors on stands. And you should be ok with 24-26" stands with your 9'ceiling. Granted, you'll still have MORE bass anomolies to contend with ideally, than if you PROPERLY EQ'D a pair of FULL RANGE MONITORS like your Dunlavy's!!!!! You can get em sounding very very smooth and flat, giving you a very large room bass response if you do it right with a parametric EQ!!!! Also, the speakers will sound even more dynamic if you biamp them! You'll have to check for tonal balance on some speakers when you biamp however. As some speakers aren't really designed to biamp well. I think you'll be ok if you get something like a good used strong bass amp with volume controls, like the excellent Parasound amps for bass! YOu can put that on the bottom posts, and your DNA .5 on the top! Should sound VERY GOOD! You might try...
AnywaY, those are my suggestions.
Oh, do you like the Dunlavy's well enough? Why are you considering others? Aren't getting good sound in your small room? I understand if that's the case. I used to have a smallish 10.5 X 12.5 X 8 foot room that was a real challenge to get sounding good! You'll get better results with monitors in your room with a 9' ceiling on stands than I did overall, but you're not out of the woods unless you treat your bass response problems!!
Again, you might consider biamping and EQing! I think this is the only way, without affecting your midrange and high's, to get great sound in your tiny room! YOu could play around with careful small speaker placemnt in that room *(like some used Merlin TSM-m's, or Revel M20's, or whatever), on stands, and carefully place or even eq in a sub in that room! You could even get a quick little 8" sub that's fast and musical to integrate. It will sound great if you're good at settting it up!
Hope this helps...and I'm pretty right-on about what I'm saying here for the record.(ha!)
good luck
