I see why you have 12K posts.
The band is relative to all, but here is a pretty solid game plan. It's not about changing one at a time, there is a range you should work at together, and know why.
A vocal EQ cheat sheet to help you mix vocals like a pro | Learn the frequency areas of controlling vocals | Discover common EQ mistakes + Vocal EQ Tips.
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Figure out what range your subs are, and bump those up a little, (assuming you have those low frequency ranges filtered out of the rest of the speakers). If your subs can only do 25, then turn 20 off if its not filtered out.
Anything over 10K is non-vocals, and the real high pitched tingy, like cymbals. Those I try to get rid of, because they just hurt my ears after a little while of it cranked up. Unless you like classical and appreciate cringing at low volumes, those can most likely go. Do you eat a lemon a week to keep up your pucker? Then you probably don't need the equivalent sound either.
Personally, deep sub bass is easy to figure out, and then to tune out the highs. Then go back down, to the bass sound range. After that pick a range and work the range on a few songs.