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Calrec SIGMA - EQ AND FILTERS; Filters; Alternate EQ; EQ Flat

Calrec SIGMA
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44 SIGMA with Bluefin






Once a channel has been selected by
pressing its Assign button (A or B), its
frequencies can be adjusted using the
following controls.
Filters
LF Flat then 20Hz to 330Hz
12dB/octave
HF 3.3kHz to 20kHz then flat
12dB/octave
The console LFE path is a full bandwidth
one, but when necessary a low pass filter
can be applied to any LFE leg via the spill
panel. Typical frequency choices might
be 80Hz or 120Hz but a wide range is
available.
HF 50Hz to 20kHz then flat
12dB/octave
Equaliser:
LF 30Hz to 470Hz, shelf or bell
(Q of 1.5)
LMF 160Hz to 2.4kHz,
Q = 1 or High Q = 3
HMF 500Hz to 7.5kHz,
Q = 1 or High Q = 3
HF 1kHz to 16kHz, shelf or bell
(Q of 1.5)
EQ level controls are adjustable by ±15dB.
Bands overlap to allow greater flexibility of
settings.
EQ and Filters are switched in and out
of the signal path using the IN buttons in
each section.
Control Assignment
The CH button allows the panel to
control the EQ and Filters in the assigned
channel’s path. The SIDE CHAIN button
allows the panel to control the EQ and
Filters in the dynamics of the assigned
channel. There are 4 bands of EQ
EQ ANd fILTERS
permanently available in the side chain
in addition to the 6 bands available for
channels and groups.
Alternate EQ
The ALT EQ FLTR button allows switching
between two complete sets of EQ and
Filter controls.
EQ Flat
EQ FLAT will clear any EQ settings to flat.
The button must be pressed and held
down, this prevents against accidental
flattening of settings.
Panels - EQ/DYN Screen
The user can view and manipulate the
EQ and filter response curves, using the
Panels-EQ/DYN screen.
All of the controls available on the EQ
panel are also available on this screen. In
addition, the user can choose whether to
control the EQ and filters of the currently
assigned fader path, or to select a
different fader, known as the “PC Fader”
to which EQ and filter settings can be
applied independently of the current
assignment.
The required band is selectable from the
left side of the screen. When selected,
that band’s response curve is shown in
the Editable Response window, with the
adjustable area highlighted in blue.
Its frequencies can be adjusted using the
touch screen, or trackball, by selecting
the crosshair and moving it around within
the editable area.
As it moves, the frequency and level
values of the selected path (or PC fader
path) will change. Nudge buttons to the
right of the editable response window
can also be used to make adjustments.
The overall response window shows the
overall response curve for the selected
path. The curve itself is only visible if EQ
is switched into the path.
A similar screen exists to adjust the EQ if
it is switched into the dynamics.
IN
EQ
PRE
KEY
1 2
THRESHOLD RECOVERY DEPTH
ATTACK
RATIO
FDR
PRE
LINK
SOFT
LISTEN
SIDE CHAIN
-10.5 dB sAUTO
dB-27.0 20.00.5 s dB
+ 8.0 dB
LEVEL
LF LMF HMF HF
ALT
FREQUENCY
EQUALISER
EQ
QF5587
2 220Hz 3 750Hz 3.0k 3
- 5.0 dB + 3.0 dB - 2.0 dB
2.0:1
ATTACK
RATIORECOVERYTHRESHOLD
FAST
DYNAMICS
IN
CONTROL
FLTR
LF
FLTR
HF
DYNAMICS
10.0k 5
EXPANDER
COMPRESSOR
FILTER
CH
GAIN
REDUCTION
C
E
1
4
8
14
20
1
4
8
14
20
GATE
FLAT
EQ
FLTR
EQ
FILTER
IN
CHAIN
SIDE
SIDE CHAIN LMF SIDE CHAIN HMF
INFAST

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