@killdozzer whose referring to refractions from hostile space (environment) among other things and sure put Genelec 8341A to close to the back wall or simply in bad enough room that you have to dial bass - 6 dB (or even more). That's exactly what people have! Less perfect equipment and less perfect environment, trow in small speakers which can't even get close to high sound levels where spectrum is hottest or average one's that cannot do that without distortion even in ideal conditions. I think you see where that is going. However where signal is hottest ain't where you have the most information, that would be mids, uper mids lower highs. Evaluation those have there help you with easier leveling (when monitoring). Easy example would be a bit up front female vocals compared to male one's. Same applies to highs you just need to remind yourself that those are bright and it needs to stay that way and if you exaggerate those will chop your head off how bad it will sound.
Every deviation we bring into original signal is considered as distortion so we try to do it on insane level to minimise the demage (modern DSP's and huge vector calculations 128 bit FP).
Examples of quet listening when you don't want much of a range but you want that mids are more prominent (TV shows and such, Dolby's and cetera) for instance.
Nothing bad about little more elevation in mids and a bit of excitement there (to hell we all love it) and it translates good to hedaphones as all of them already have it there (not flat but rather similar but much more prominent hump there arguably for the same reason and more prominent to complete more as after all those are little speakers).
I don't know is this making any sense to you but at least I tried (all do I whose running away from doing that).
Best regards.