Oh dear. No wonder you didn't like it.
FM curves show our varying sensitivity to frequencies at varying levels. It has nothing to do with this. Your speakers, like your source, pre and amp, should have a "flat" or linear/neutral response. You hearing will respond accordingly at different...
Did you measure the speakers and then apply adjustments based on those measurements, or....
There is no such thing as a house/target curve ;-). The only "target" should be as flat/smooth on AND off axis of your speakers native/onset response. If your speakers already possess this, then indeed...
Completely oblivious to the DSP imbedded in your system via recordings and of course there will never be any measurements of your inferior analog conversions showing where "bandaids" would fix. IOW, the typical audiophile system like the 100s, maybe 1000 including shows, I've heard. Don't worry...
So now you admit you didn't realize like most audiophiles, DSP was in your mains all along. Just an inferior analog version.
Well, Craig decided he could do better...and did.