A Note On Channel Use - SoundCraft         GicRac1000st User Manual

5. Apply one of the 10 GigFX digital effects to the signals
The GigRac’s GIGFX Processor (14) has a choice of 10 studio quality
digital effects that can be added to any individual or group of signals
running through the mixer. Usually vocals require some digital reverb or
echo to be added to them in order to create a more spatial sound that
is pleasing to the listener.
Make sure the ‘effects On’ button (15) is selected.
To try this out simply select one of the 10 GigFX presets, such as Hall
Reverb, using the selector knob (16).
Turn the ‘FX to Main’ control (17) to about halfway and then gradually
turn up the individual ‘FX’ send control (18) on the channel you wish to
add the effect to. As you turn up the ‘FX’ send level you should hear the
signal change.
By pressing the ‘effects On’ (15) switch to the off position you can
compare the original ‘dry’ signal with the ‘wet’ effect signal.
You can now turn the selector knob (16) to select different types of
effects for comparative purposes.

A Note on Channel Use

Channels 1-4 are the most sensitive. It is better to use these channels
for microphones (particularly if your microphones are fitted with jack
plugs), and guitars with passive pickups. It is likely that you will need to
have the pad buttons pressed in if you use mics fitted with XLRs.
Channels 5-8 are less sensitive, they are ideal for line-level devices such
as keyboards, CD players and tape players. They will also work with
guitars with active pickups. Microphones fitted with XLRs will also work
(unless they need phantom power).
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