Basics Of Equalization - Alesis DEQ230 Reference Manual

Band Gain Cut/Boost Ranges
Whether you are cutting or boosting a band, the first 10 dB of
change happens in 0.5 dB increments. The last 2 dB of change,
going from +/-10 dB to +/-12 dB, happens in increments of 1.0
dB. So as you make the change, the Numeric LED Display will
show you values like this: 0.5, 1.0, 1.5, 2.0, 2.5 ... 9.0, 9.5, 10, 11,
12.
It's not possible to show a minus sign in the LED display for
negative gain values. So when you're pushing the [DOWN]
button, you'll see the same values: 0.5, 1.0, 1.5, 2.0, 2.5 ... 9.0, 9.5,
10, 11, 12. But if there's any doubt in your mind about which away
you're going, the Band Gain LED will clue you in. As soon as you
move 0.5 dB away from 0, the LED for that band will change from
green to yellow. If you are cutting the frequency, the -2 dB LED
will light. If you are boosting the frequency, the +2 dB LED will
light. And on it goes until you reach the maximum value in either
direction.
The resolution of the gain increments is higher than the number
of gain LEDs in each band on the front panel can fully display.
Therefore, you may make 0.5dB changes to gain and a band's Gain
LED may not change. The following table shows the amount of
change in dB it takes to light each of the Band Gain LEDs:
LED Gain change
+ 12 dB + 12 dB
+ 10 dB 9.5 – 11 dB
+ 8 dB 7.5 - 9.0 dB
+ 6 dB 5.5 - 7.0 dB
+ 4 dB 3.5 - 5.0 dB
+ 2 dB 0.5 - 3.0 dB
0 dB
- 2 dB 0.5 - 3.0 dB
- 4 dB 3.5 - 5.0 dB
- 6 dB 5.5 - 7.0 dB
- 8 dB 7.5 - 9.0 dB
- 10 dB 9.5 - 11 dB
- 12 dB - 12 dB

Basics of Equalization

0 dB
3
Remember, if you want to
keep the edited program,
be sure to store it to one of
the User locations. For
instructions on how to do
this, turn to page 38.
33