17
4
Gain
This knob sets how much of the source signal is sent to the rest of the mixer. Too high, and
the signal will distort as it overloads the channel. Too low, and the level of any background
hiss will be more noticeable and you may not be able to get enough signal level to the
output of the mixer.
Note that some sound equipment, particularly that intended for domestic use, operates at
a lower level (-10dBV) than professional equipment and will therefore need a higher gain
setting to give the same output level.
See “Initial Setup” on page 23 to learn how to set GAIN correctly.
5
Equaliser
The Equaliser (EQ) allows fine manipulation of the sound, particularly to improve the
sound in live PA applications where the original signal is often far from ideal and where
slight boosting or cutting of particular voice frequencies can really make a difference to
clarity. There are three sections giving the sort of control usually only found on much larger
mixers. The EQ knobs can have a dramatic effect, so use them sparingly and listen
carefully as you change any settings so that you get to know how they affect the sound.
HF EQ
HF EQ
HF EQ
HF EQ
HF EQ
Turn to the right to boost high (treble) frequencies above 12kHz by up to 15dB, adding
crispness to cymbals, vocals and electronic instruments. Turn to the left to cut by up to
15dB, reducing hiss or excessive sibilance which can occur with certain types of micro-
phone. Set the knob in the centre-detented position when not required.
MID EQ
MID EQ
MID EQ
MID EQ
MID EQ
There are two knobs which work together to form a SWEPT MID EQ. The lower knob
provides 15dB of boost and cut, just like the HF EQ knob, but the frequency at which this
occurs can be set by the upper knob over a range of 140Hz to 3kHz. This allows some
truly creative improvement of the signal in live situations, because this mid band covers
the range of most vocals. Listen carefully as you use these controls together to find how
particular characteristics of a vocal signal can be enhanced or reduced. Set the lower
knob to the centre-detented position when not required.
LF EQ
LF EQ
LF EQ
LF EQ
LF EQ
Turn to the right to boost low (bass) frequencies below 60Hz by up to 15dB, adding
warmth to vocals or extra punch to synths, guitars and drums. Turn to the left to cut low
frequencies by up to 15dB for reducing hum, stage rumble or to improve a mushy sound.
Set the knob to the centre-detented position when not required.
6
Aux Sends
These are used to set up separate mixes for FOLDBACK, EFFECTS or recording, and the
combination of each Aux Send is mixed to the respective Aux Output. For Effects it is
useful for the signal to fade up and down with the fader (this is called POST-FADE), but for
Foldback or Monitor feeds it is important for the send to be independent of the fader (this
is called PRE-FADE).
AUX SENDS 1 and 2 are both globally switchable between pre and post-fade (see master
section on page 21/22).
7
PAN
This control sets the amount of the channel signal feeding the Left and Right MIX buses,
allowing you to move the source smoothly across the stereo image. When the control is
turned fully left or right you are able to route the signal at unity gain to either left or right
outputs individually.
