The AE400 is an advanced active equalizer suitable for music production, post production, and live sound. The AE400 is made up of 4 bands of fixed and active equalization. Each band is completely overlapping with all other bands and has its own Q (bandwidth), fixed gain, and active gain controls. A key filter for each band allows the active gain response to be as selective or broad as needed, based on the Q (bandwidth) control. Each band can use the input signal or selected side chain signal to trigger the active EQ response.
Route the main mix through the AE400, and the vocal into the side chain input. Sweep the key filters around in the AE400 to find what frequencies the vocal signal levels are at.