I'm thinking along the lines of using a calibrated mic patched into the 1/3 oct. RTA software on my DAW, position the mic at my ear level when I'm seated on my chair, feed the monitors pink noise, and correct the offending freq.
There are several problems with this, but the main ones are that:
a) the EQ can tend to add it's own coloration to the monitor mix that doesn't exist in the actual mix. This could make translation by your ears just that much more complicated. The more you have to push the EQ, the more of an issue this can be.
b) some frequency response issues are a property of the room itslelf and cannot be addressed by EQ, especially in the bass frequencies. Let's say, for example, that you have at your ear position a huge null mode cancellation at 72-75 Hz (just to pull numbers for example.) That cancellation is going to happen regardless of the amplitude of the signal at those frequencies; no matter how much you boost your EQ, those wavelengths will still tend to cancel at that listening position.
c) if you have such problems at the frequencies mentioned above, even a 1/3rd octave EQ is only going to strike a glancing blow at them at best, and affect those frequencies that maybe there are no problems; the closest band centers on a 1/3rd octave EQ are at 63Hz and 80Hz. More generally, the "resolution" of the uneven-ness in your room's response is likely to be higher than the resolution of your EQ, trying to flatten it can be like trying to flatten an air bubble under plastic. Push it down here and it can pop up next door.
Get your room as good as you physically and economically can and learn to translate from there, and you should be just fine.
G.
