Alesis DEQ230D Manual Do Utilizador

Basics of Equalization 

To further illustrate the differences, here is a pair of  examples in 

which three adjacent bands have settings of  + 3 dB, -3 dB, and + 3 

dB, respectively: 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Remember that at lower gain settings, there is an even wider Q for 

a given frequency band on a variable Q equalizer. The center 

frequency band needs to be edited even more drastically in order 

for any noticeable reduction of  frequencies in its range.  

 

The corresponding illustration for the constant Q equalizer speaks 

for itself:  

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

We offer this information regarding the differences between 

constant Q and variable Q equalizers not as an attempt to 

persuade the world to reject variable Q equalizers out of  hand; in 

some applications either would do the job nicely. But when a 

greater degree of  control over the program material is needed, a 

constant Q equalizer like the DEQ230 offers a significant 

advantage.