Dirac and room correction software

[Hifi_swlon]

I thought that Dirac did a lot more than EQ, at least so they advertise at http://www.dirac.com/live-home-professional-audio-info. Is all of that stuff unnecessary under 200Hz? I'm not expert at using Dirac, REW, or parametric EQ, but I haven't been able to use EQ settings to equal the results I've had with Dirac (or even my AVR's automatic room correction). However while I've tried correcting only the bass (at various cutoff points) to my taste my room benefits from full-range correction.

It does all that stuff - I was merely thinking about a temporary solution.  Since I now know what makes the difference between my system sounding thin and horrible or really good, I thought I'd try and adjust as required using EQ, just as a bodge for now.