Need a warm speaker for a bright room

Cardboard can be used, my subs use them; cicular in shape.

Tone controls! Curtains, rugs, curtains on the ceiling.  Art panels from GIK acoustics. Headphones.  Small speakers you can keep far from the walls and into the room.

Bright: B&W, Golden Ear, Focal, Triangle, Thiel, NHT.

Neutralish: Monitor Audio is quite neutral, great if you can use them.

Darker sounding: AR, Boston Acoustics, Bose (no flames). Rega, Monarchy are some of the brands in the past that sounded more mellow.  I have various amounts of listening time, and some a lot older than others, so YMWV. 

This is all from poor memory and no scientific rigor whatsoever.  The flame wars may start, but I mean little harm in my thoughts.

Best,

Erik

What you'll need, with no room treatment or furniture, is a speaker with very controlled dispersion. How about a Martin Logan?

Best,

Erik