you will probably need bass traps, this is the norm in smaller rooms.
There is some free software you can get, and together with a computer, an omni mic and a full range speaker you should be able to measure it easily
ETF, Windows, $150 FuzzMeasure, Mac, $150 Room EQ Wizard, Windows and Mac and Linux, Freeware This article from ethan winer explains how he uses ETF
I hope that helps
narco