Alesis DEQ230 User Manual

 

So far we have only dealt with cutting or boosting single frequency 

bands. The differences between the constant Q and variable Q 

methods become more "graphic," if  you will, when adjacent 

frequency bands are involved.  

 

In this example, three adjacent bands are used. They have settings 

of  + 6 dB, 0 dB, and + 6 dB, respectively: 

 

 

 

 

 

 

 

 

 

 

 

  

 

You can see how the 0 dB setting on the variable Q equalizer 

merely serves to round off  the top of  the curve; in actuality, this 

translates into a boost in the range of  frequencies under that 

band's control. You would have to cut the gain on that band 

significantly to reduce the unintended consequences of  boosting 

the other two frequency ranges.  

 

The constant Q equalizer, on the other hand, has more precise 

control over each of  the frequency bands. As you can see in this 

example, the effect on the center band is significantly lower: