Vector Equalizer Live WP description

Equalizers history began in the 1930s in Hollywood, when the first movie with sound. While many people paid attention to the music and unnatural votes cast. One of these people was a brilliant man, who used the first sound equalizer to improve the sound of a movie theater. By this equalizer similar devices used to correct the sound transmission loss of signal. However, he was the first who introduced the equalizer in the loudspeaker system. The first such device was the equalizer with two sliders, each of which had a selection switch frequencies.