MonoStereo
channelschannels
-10dBVEQ: (28 through 34)31. HI MID and 32. LOW MID
ICGAINTRIMUTRIMM
U
2021
The mixer has low shelving, midThe stereo channels employ a 2-stage fixed-
22
060
+15dB-45dB-20+20peaking and high shelving EQ. OShelv-frequency midrange EQ:
UAUXUAUX
ing� means that the circuitry boosts or+15
11
PREPREcuts all frequencies past the specified+10
OO+15OO+15frequency. For example, boosting the+5LOW MID is
UU0LOW MIDcentered at
LOW EQ knob boosts bass frequencies at
22�5
PREPRE800Hz.
80Hz and below. OPeaking� means that�10
OO+15OO+15
�15
UUonly a selected Ohill� of frequencies sur-
20Hz100Hz1kHz10kHz 20kHz
33rounding a center Ohilltop� frequency is
OO+15OO+15affected by the EQ control.+15
UU+10
All EQ gain controls provide up to+5
44HI MID is
15dB of boost (clockwise) or cut0HI MID
OO+15OO+15centered at
�5
(counter-clockwise). They are flat (no
�103kHz
UPREUPREboost or cut) at their center detents, ef-
�15
20Hz100Hz1kHz10kHz 20kHz
55fectively bypassing their circuits.
POSTPOST
OO+15OO+15Midrange EQ is often considered the most
Note: EQ boost is a form of level
UU
dynamic, because the frequencies that define
boost. With excessive amounts, the sig-
66any sound are almost always found in this
POSTPOSTnal may become too hot and overload
OO+15OO+15
range.
subsequent circuitry. Should this hap-
UEQUEQ
pen, either back off the EQ gain, or
HIHI33. LOW
12k12krepeat the SET THE LEVELS on page 8.
-15+15-15+15This control is centered at 80Hz and below.
UUThe following graphs show how the
HIfrequency response changes when theThis frequency represents the punch in kick
MIDMID
3kdrums, bass guitar and fat synth patches.
-15+15-15+15various controls are adjusted.(The
600U
graphs are simplified for entertainment+15This graph
1501.5kFREQMIDand enlightenment purposes only).+10shows variousLOW
800Hz
+5
1008k-15+15settings of the
UU0LOW
28. HI�5LOW control,
LOWLOW
�10with LOW CUT80Hz80Hz
-15+15-15+15This control is centered at 12kHz and�15
LOW CUT20Hz100Hz1kHz10kHz 20kHznot engaged.
75 Hzabove. Boost it to add sizzle and defini-
18dB/OCT
tion to sounds with high-frequency
OLOL34. LOW CUT
transients, such as cymbals. Reduce it to
attenuate sibilance or to mask tape hiss.This switch (only on the mono channels)
LR-20LR-20cuts the bass frequencies below 75Hz at a rate
PANPAN+15
of 18dB per octave. Low Cut is also known as
+10
2021 22+5High Pass (low cut dress=high pass rate).
MUTEMUTE
0HI
To prevent muddy mixes, use low cut on ev-
MUMUTTEE / / MUMUTTEE / / �5
SOSOLLOO SOSOLLOO
ery mono channel except those which carry
�10
dBdB�15kick drum, bass guitar or other bass-intensive
10SOLO 10SOLO20Hz100Hz1kHz10kHz 20kHz
sounds. Low cut can also help reduce the possi-
55
bility of feedback in live situations and it helps
U1-2U1-229. MID and 30. FREQ
to conserve amplifier power.
55The mono channels employ a semi-+15
3-43-4This graph
+10
1010parametric mid-sweep EQ. The gain is
shows various
+5
20L-R20L-Rset via MID (29), and then Oaimed� at a0LOWsettings of the
specific frequency, from 100Hz to 8kHz,3030�5LOW control,
via FREQ (30).�10
4040with LOW CUT
�15
5050
6060+1520Hz100Hz1kHz10kHz 20kHzengaged.
OOOO
+10
Desirable low frequencies can be boosted
+5
0MIDwhilst undesirable lower frequency stage
�5rumble, mic handling clunks and P-p-pops are
�10
attenuated.
�15
20Hz100Hz1kHz10kHz 20kHz
FREQ
20 |
ACEC
