Operating the device
What is an equalizer?
An equalizer is a device used to manipulate the sound balance of an audio source. It is typically used to
adjust the audio signal from a sound source like a mixer or DJ controller for optimal sound reproduction by
the speaker system.
Because speakers do not reproduce sounds with 100% accuracy or neutrality and the surrounding
environment also affects the overall sound quality, the ability to manipulate certain frequencies can improve
the sound. An equalizer allows you to accurately adjust the sound and tweak it to your preferences.
An equalizer is normally connected directly to the main sound source. In addition to equipment like mixers
and DJ controllers, they can also be used with things like computers, tablets and MP3 players, among
others.
How does an equalizer work?
An equalizer is equipped with different slide controls that each affect a different part of the audible frequency
spectrum. Normally, the frequency range goes from 20 to 20,000 Hz and each slider controls a different
frequency range which can vary depending on the total number of controls. Often, there are 15 or 31 sliders.
Each slide control is essentially a filter that manipulates the pre-determined frequency range as well as just
below and above the indicated values. It should be noted that from a technical perspective, it's virtually
impossible to manipulate the frequencies to an exact number.
Unfortunately, equalizers don't work this way.
In practice, therefore, the indicated frequency refers to the peak of the curcve which flows off in both
directions. The further below or above the peak a frequency is, the less it is affected.
The strength of an equalizer can also be controlled. Normally, you can choose b/- 6 dB although it's
sometimes possible change the range to something like +/- 12 dB.
This means that you can control the volume of each frequency band separately by cutting or boosting its
signal by 12 dB, for instance.
By doing this, you are lowering or raising a threshold or even creating a dip in your frequency spectrum.
The effect of an equalizer on an audio signal can be compared to driving a car on a road. The smoother the
road, the smoother the ride. Bigger bumps and holes will have a bigger effect on the ride in the same way
that more extreme equalizer settings will have a more extreme affect on the sound.
The information in this user manual is subject to change at any time without notice.
Version: 1.0
Date of creation and author's initials:23-09-2017 RV
Revision date and author's initials: -
