Compressor or is the combination of EQ, compressor type of compressors. It is a type of compressor that uses two very different compressing units. One compression unit is known as the band-pass filter. This is a filter that is not continuous but has a continuously variable filter. The other is called the notch filter, which is a low frequency smoothing filter with equal amounts of high and low frequencies.
Compressor is also includes a basic equalizer that applies a crossover to eliminate unwanted noise from outside the frequency range that is received by the amplifier. The low frequency crossover needs to be equipped with a very low pass filter. In the case of a low frequency equalizer it is a combination of frequency to get the best response. The use of the woofer and tweeter of the system is quite important. In some cases you may need to apply a slight amount of crossover to get the desired outcome. A fully parametric equalizer is also used.
An equalizer with different parametric equalizers could allow you to achieve different results without any trouble. Another thing is the quality of the control over the sound quality of the compressor eq. With a good equalizer your compressor or can be tuned to achieve the desired output level. In terms of designing compartments in the eq, you need to look at the frequency response of the input signal. By tuning the eq to the input signal and see if there is a deviation in the frequency response, you can make the eq so that it is properly adjusted to get the response you want.