Is there a "science" to subtractive EQ where cutting in a specific area "boosts" or accentuates a higher area of freqiencies? Let say, for example I cut 3dB at 125-250Hz and then I hear it as if I boosted at 3000-4000 Hz. (Just an example) I read somewhere (can't remember where) that there is a "chart" of corresponding frequencies - cut @ so-and-so is like boosting @ so-and-so. Anyone? Help? Muchas Gracias.