Duke's speakers would work nicely in your room, I would recommend you consider the Rhythm Prisms as they are the smallest floor stander he offers. I have been using his Jazz Modules for several years now in a variety of rooms, one of which was much smaller than yours. Their flexibility with placement is a bonus. Duke himself was pretty surprised at how I had mine set up in a very small room and how good they sounded.
That being said I do not know what your budget is, but Duke has a introduced newer version of the Jazz Modules. They are larger and About twice the price of the Rhythm Prisms but IMO these speakers have proven to me to be far and away better than anything else I have heard in my system, including the Audio Note ANe's which are substantially more in cost.
That being said I do not know what your budget is, but Duke has a introduced newer version of the Jazz Modules. They are larger and About twice the price of the Rhythm Prisms but IMO these speakers have proven to me to be far and away better than anything else I have heard in my system, including the Audio Note ANe's which are substantially more in cost.