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Chapter 3: Sonoma Mixer
85
button is colored yellow. When an EQ section is both armed and engaged, its arming button is
colored green.
Table 3-1
shows the various states for the EQ Master Engage switch and the EQ Arm switches, using
the MF EQ as an example.
Each channel has a limiter followed by an independent compressor. The compressor has additional
controls for ratio, overeasy (allowing the user to adjust the hardness of the 'knee') and gain makeup.
The gain reduction meter monitors both limiter and compressor, showing the limiter in light orange
and the compressor in dark orange. The total bar height shows the sum of the gain reduction from the
two sections.
In addition to the parametric EQ filter sections, there is one low-pass and one high-pass filter per
channel. Both have individual enable buttons for high-frequency attenuation and low-frequency
attenuation labeled HF and LF, respectively. The slope of each filter is continuously variable between
0 dB per octave and –36 dB per octave via its slope control.
Note:
The filter enable buttons are not subject to the master enable switch associated with the
parametric EQ section.
It is possible to insert a delay time of between 0 msec. and 92.9 msec. into the channel.
This button switches the channel routing at this point in the chain between a straight-through (OUT)
path and the same path but via the channel’s insert send and return.
It is possible to change the ordering of processing in each of the channel strips, or to copy one
channel's ordering to another channel. Use the CHANNEL and COPY buttons in the mixer’s center
section. When either of these buttons is depressed the mixer’s channel controls are disabled. You may
then select and move processing blocks.
When the CHANNEL button is depressed, the processing blocks on a channel strip highlight in
orange as the mouse cursor passes over them. To select a block left click the mouse. The block will
Table 3-1
Interaction of Master Engage and EQ Arm controls
Master Engage
EQ Arm
EQ Color
EQ State
+
Out
=
Grey
Out
+
Out
=
Grey
Out
+
In
=
Yellow
Armed
+
In
=
Green
Engaged
3.6.3
Channel Dynamics
3.6.4
Channel Filter
3.6.5
Channel Delay
3.6.6
Channel Insert
3.6.7
Channel Strip Ordering
OUT
MF
IN
MF
OUT
MF
IN
MF
