Alesis DEQ230D User Manual

Basics of Equalization 

 

There are thirty buttons side-by-side on each channel of  the 

DEQ230. These are the [BAND SELECT] buttons. Above each 

button is a number like "25" or "8k." These stand for the audio 

frequencies, measured in Hertz (Hz), which are selected for editing 

by the [BAND SELECT] buttons below them.  

 

Situated between the [BAND SELECT] buttons for Channel A 

and Channel B you will find three larger buttons. The one in the 

very middle is the [POWER] button. On either side of  that are 

the [DOWN] and [UP] buttons, which are used to edit the gain 

amount of  the frequency you have selected with the [BAND 

SELECT] buttons. (It is also possible to select and edit several 

frequencies at once; more about this later.) The [DOWN/UP] 

buttons are also used to select programs in Program mode. 

 

Directly above these three buttons are three more buttons: the 

[BYPASS], [STORE], and [LINK/EXIT] buttons. Their 

functions are as follows:  

 

 

When this button is first pressed, a red LED will light. This means 

the DEQ230 is in Bypass mode. As long as this LED is lit, 

incoming audio will pass through the unit without being affected 

by the DEQ230. This is useful for comparing the "equalized" 

signal with the original signal so you can decide if  you like the edit 

you made. Press the button again to get out of  Bypass mode and 

hear the effect. 

 

 

Once you have made an edit you would like to keep, press this 

button to enter Store mode. From there you can decide which of  

the 30 User locations will become the new home for the edited 

Program. You can also copy the settings from Channel A to 

Channel B as you store a program. For more information on this 

function, see page 38. 

 

 

This button serves a dual purpose:  
1.   While in Program mode, pressing this button will cause the 

settings for Channel B to "mirror" the settings for Channel A. 

Any further edits you make to a band on Channel A will also 

happen to that same band on Channel B. This is useful for 

quickly setting up a program without having to make 

independent adjustments for each channel.  

2.   If  you’re in the middle of  some other activity, such as editing 

or storing, pressing this button will allow you to "exit" to 

Program mode.