Operation Manual

ManualsBrandsSoundcraft ManualsAudioSpirit M series

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 Set Up’ on page 23 to learn how to set GAIN correctly.

100Hz HI-PASS FILTER

Pressing this switch activates a steep 18dB per octave filter which reduces the level of

bass frequencies only, and is a real bonus for a such a small mixer. Use this in live PA

situations to clean up the mix, reducing stage rumble or `popping’ from microphones.

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

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

microphone. Set the knob in the centre-detented position when not required.

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 240Hz to 6kHz. 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

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.

AUX SENDS

These are used to set up separate mixes for FOLDBACK, EFFECTS or recording, and the

combination of each the Aux Send is mixed to the respective Aux Output at the rear of

the mixer. 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

These are always PRE-FADE and therefore most appropriate for foldback or monitor

mixes or external submix.

AUX SENDS 3 AND 4

These are always POST-FADE for effects sends, external submix (or for Centre Voice

cluster or mono Tape mix).

PAN

This control sets the amount of the channel signal feeding the Left and Right MIX or

SUB 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.