Here we have made a practical Guide for using equalizers.
When a painter creates a painting a similar set of rules apply.
It is known when an image (painting or photograph) is presented on a canvas that is a horizontal rectangle, the eyes are always drawn to the area that is one third in on each side.This is called the rule of thirds.
There is a similar thing that occurs in any piece of music. The ear will subconsciously want to know where to listen first.
If the ear is drawn to a part of the performance that is meant to be a support element and not stand out then the presentation of the music will be out of balance.
The musicians have a responsibility here of course but so does the recording engineer and producer. A good engineer can effectively save a poor performance by being aware of these concepts.
The equalizer becomes a much more important and delicate tool in the production of music when used this way.
One important thing to keep in mind is when working with equalizers make sure to hear how the instruments sound together.
Avoid equalizing instruments with out listening to how they relate to each other.
Ideally you want to map out of a concept of where each instrument will sit in the mix, not just as concerned to volume but also as concerned to frequency.
Think of this like a painter would think about color.
When the color blue sits next to green that same blue looks different next to any other color.
The same is true for tone color.
Think of each tone as a color that will sound different based on what other tonal colors exist.
The more you understand this concept, the more you will begin to control the frequencies in the mix and how well they work together.