Alesis DEQ230D User Manual

You'll understand how this effect process got its name once you 

see the way it looks when recreated on the DEQ230: 

 
1.  Follow the instructions for items 1 and 2 from Step 2. 
2.   Starting from the far left of  Channel A, press every other 

[BAND SELECT] button and take those bands all the way 

down to -12 dB. Then select the unedited bands and boost 

them +6 dB. When you’re done, look at the LEDs on the 

DEQ230 and remember the “comb” analogy. The bands set to 

+6 dB are the “teeth” of  the comb, and those set to –12 dB 

are the spaces between the teeth.  

3.   For an even more interesting effect, press the [LINK/EXIT] 

button to unlink the bands on Channel B from Channel A and 

create the exact opposite settings. In other words, take the 

“odd” bands on Channel B to +6 dB this time and the “even” 

bands to –12 dB. Be sure to toggle the [BYPASS] and 

[LINK/EXIT] buttons to get an idea of  what is being done 

to the signal as it passes through the DEQ230.  

4.  Experiment with different sized "teeth" and "spaces." Put two 

adjacent frequencies down and the next one up, repeating the 

pattern. Try "broken" teeth (i.e., boosting some frequencies 

more than others)! Adjust which frequencies to emphasize/de-

emphasize to suit the incoming audio.