My audio journey related to the above goes like this. Last Nov we moved to Atlanta and my new dedicated audio room decreased in size (14 by 12 by 8).
I have relatively medium size floor standing speakers with powered woofers. The sound was boomy and very bass heavy. Just could not listen to music at any reasonable volumes. Fustrated with this new setup, I invested in a mic, usb sound card and REW room measuring software and evaluated the room. To my surprised,there was a 12 db peak at 41 hz which was overbearing. Got soome room absorbtion panels and bass traps from GIK Acoustics. It improved the sound in many respect but could not get rid of the bass boom. I use Squeezebox Touch as my source and there is a plugin called "Inguz" which is a DRC and also has a 31 band equilizer. Installed it and I gave it a 12 db cut at 41 hz and adjusted some other freq, and hold behold. Night and day difference. The bass boom just disappeared and now the system sounds just fantastic. I can play it as loud as my ears can handle without any distortion or compression.
Hence I agreed with some of the posting above that room panels + bass traps along with digital equalization is the panacea for boomy bass and room modes.