Mackie SR24•4 Owner's Manual page 21

STEREO TRIM, FADER, SOLO, AUX
All the controls on each of the stereo chan-
nel strips are stereo. The TRIM control is a
dual-channel trim and the channel fader is
dual-channel (stereo). The solo buses and
each of the aux sends are wired to tap signal
from both the right and left sides of the stereo
channel audio.
STEREO EQ SECTION
The EQ on Channels 21–24 is stereo, too, work-
ing its magic on both sides of the signal at the
same time. (That's 29–32 on the SR32•4.)
The design of the EQ is
slightly different from
the mono channel strips
as well, with two sepa-
rate fixed-frequency
equalizers replacing the sweepable equal-
izer in the MID EQ range.
HI EQ
The HI EQ section [14] is a 12kHz shelv-
ing equalizer, similiar to the mono channel
strip HI EQ section.
+15
+10
+5
0
–5
–10
–15
20 100 1k 10k
Hz Hz Hz
3kHz, a bandwidth of 1 octave (Q = 1.4) and a
range of 15dB. A bit of added 3kHz will in-
crease clarity or bite. If you have an input that
sounds harsh or nasal, pull out a little at 3k
and you can smooth the sound out.
LOW MID EQ
The LOW MID EQ section [16] is a peak-
ing/dipping equalizer with a fixed center
frequency of 800Hz and a range of 15dB.
Adding a little EQ at this frequency can put
+15
+10
+5
0
–5
–10
–15
20 100 1k 10k
Hz Hz Hz
STEREO PAN (BALANCE) CONTROL
In the stereo channel strips there is a
HI MID EQ
stereo PAN control [18]. In effect, it
functions as a balance control rather
The HI MID
than a mono PAN pot. In a mono PAN
EQ section
pot, such as channels 1–20, a mono
[15] is a peak-
signal is actually sent to a dual level
ing/dipping
control. In the stereo channels of the
equalizer with
SR24•4, the right signal is sent to the
a fixed center
right part of the control and the left part
20k
Hz Hz
frequency of
of the signal to the left part of the con-
trol. With the stereo PAN set at the
center detent, you'll get the same 4.5dB
loss of level described earlier.
20k
Hz Hz
warmth and full-
ness into vocals
EQ
U
and instruments.
Cutting can really
HI
12k
help some sounds
by reducing boxy
-15 +15
and boomy tones.
U
HI
LOW EQ
MID
3k
The LOW EQ
-15 +15
section [17] is an
U
80Hz shelving
LOW
equalizer, exactly
MID
800Hz
the same as the
-15 +15
mono channel strip
U
LOW EQ section.
LOW CUT (lack
LOW
80Hz
thereof)
-15 +15
There are no
Low Cut filters in
the stereo channel
strips.
Layout
and Function
OL
-20
L R
PAN
21 22
MUTE
MUTE / SOLO
dB
10
SOLO
5
1 - 2
U
5
3 - 4
10
L - R
20
30
40
50
60
O O
19