Zapco DC Intro - Manual (Page 16)

Equalization
With the crossovers set, we can now look at equalization
 Graphic Equalizer: Has set Frequencies and Q (slope) and you
control the boost or cut amount
 Paragraphic Equalizer: You control all the EQ factors. You
choose the center Frequencies, you choose the Q (slope), and
you choose how much boost or cut is applied
The Zapco DPN uses only Paragraphic equalization
.
This offers much more versatility than graphic EQs and allows you to be
much more accurate in your adjustments.
To get the best tuning results, we need to understand how the Q affects
our adjustments , so ….