ALESIS DEQ230D - Manual (Page 37)

Basics of Equalization
3
35
upward until it reaches 24. This is because that's how far the band
that was set to -12 dB had to travel until it hit the "ceiling," or + 12
dB (see fig. 2).
But what about the band that was set to 0 dB originally...was it
boosted to +24 dB? The answer is, "Yes and no." It was, in the
sense that the DEQ230 keeps track of the proportional values of
the bands, even if they exceed the +/-12 dB limit of gain change
for a frequency. But the audible audio gain is limited to +/-12 dB.
The reason the DEQ230 keeps track of the gain relationship
between the bands in the Edit Group is simple. It's so you can
change your mind, pull them back down to values within the +/-
12 dB limit, and still have them be the same distance apart!
For example: let's say you decided these frequencies have been
boosted too much, and you cut them by 12 dB. At this point the
Relative Gain display would read "12," with band one's Gain LED
at +12 dB and band two's Gain LED at 0 dB (as in fig. 1). So far
you haven't really reduced the gain of the first band, because it's
still at +12 dB. You still want to bring it down a bit, so you take
both frequencies down another 3 dB. So now the Relative Gain
display would read "9," with band one's Gain value at +9 dB and
band two's Gain value at -3 dB. And now you can see that the gain
relationship between the two bands was preserved; they're still 12
dB apart.
Remember, pressing the
[DOWN/UP] buttons at the
same time will reset the
Relative Gain Display to 0.
From this point you can
change the Relative Gain of
the Edit Group in 2 dB
increments by holding one of
the [DOWN/UP] buttons and
pressing the other one
repeatedly. This can be a real
time-saver if you want to get
from a Relative Gain value of
+24 to a value of –24!