MS Windows 7 "Room Correction" feature?

Has anybody tried the automatic room correction feature in the Sound Control Panel for Windows 7? If so, what did you use for a microphone for calibration (I need to be able to sample low frequencies - to 40Hz)? I have a problem with excessive low bass (around 50-60Hz) in my room that I am stuck with because I can't really move the subwoofer, and I need the higher bass frequencies to supplement my small speakers.

I am using itunes or Media Center 18. Is there a manual equalization feature I can use in or with Media Center instead?