Mackie Digital 8 Bus Owner's Manual page 85

• Click the ON button near the bottom of the EQ
window to turn on the EQ for the selected channel.
• There are three methods to modify parameters in
the EQ.
• Click and drag on the graphic curve in the
display window. Drag up and down to change
the gain, left and right to change the
frequency, and click and drag left and right
while holding down the Alt key to change the Q.
• Click and drag up or down on a control knob
below the display window.
• Click and drag up or down in the numeric
display boxes (Gain, Freq, Q).
MENU
• Click the MENU button to Open, Save, Reset,
Undo, Cut, Copy, and Paste an EQ patch.
MEM A/B
• Each MEMory stores the most recent MEM A or
MEM B EQ settings made for the selected channel.
• Click either of these memory positions to instantly
select the stored settings.
• Ideal for making quick A/B comparisons between
EQ settings.
MORPH
• Click the MORPH button to smoothly fade from
one MEMory setting to the other.
• The amount of time it takes for this transition is
set in the time window directly below the MORPH
button.
• MORPH time can be set as low as 1 second or as
high as 121 seconds.
Compressor
The meter in the Compressor section indicates
the amount of gain reduction applied by the Com-
pressor. Thus, when there is no signal applied, the
Reduction meter indicates 0 dB of reduction, with
the needle all the way to the right. As the signal
level increases above the Threshold setting of the
Compressor, the needle moves down, indicating the
amount of compression being applied at any given
moment in time, to a maximum of 20 dB of reduction.
Note that the Reduction meter is triggered by
the Compressor function only, and does not
indicate the closing or opening of the gate.
Threshold
• Determines the level at which the compressor
begins to act on the incoming signal. It is calibrated
in decibels, ranging from –60.00 dB to –1.00 dB.
Attack
• Determines how fast the compressor reacts once
the threshold has been exceeded. It is calibrated
in milliseconds, ranging from 0.31 ms to 2560.00
ms (2.6 seconds).
Release
• Determines how fast the compressor turns off
once the signal falls below the threshold. It is
calibrated in milliseconds, ranging from10.00 ms
to 2500 ms (2.5 seconds).
Ratio
• Determines the change in output level as a
function of the change in input level, once the
threshold has been exceeded. It is calibrated in
decibels, ranging from 1.00:1 to 19.99:1. Thus, if
the ratio is 10:1, an increase in input level of 10
dB (assuming the input is above the threshold
level), results in a 1 dB in output level.
Output
• Determines the overall gain of the compressor from
input to output (as measured with the signal below
the threshold level). Use this control to compensate
for the loss of gain caused by the action of the
compressor. It is calibrated in decibels, ranging
from unity (00.00 dB) to +20.00 dB.
D8B Manual • Chapter 3 • page 79