SoundCraft Spirit Folio 4 - Manual (Page 7)

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These are always POST-FADE and would normally be used to
drive effects processing units which are fed back into the mixer
and which must fade out with the input channel. Aux 4 is an
individual mono send, while the 5/6 STE knob feeds the
channel signal via the BAL control (see below) as a stereo pair
to either Aux outputs 5 & 6 or, with the 7-8 switch pressed, to
Aux outputs 7 & 8. This is particularly useful to feed the
growing number of stereo effects units now available.
This control sets the amount of the channel signal feeding the
Right and Left MIX outputs, allowing you to balance the
source in the stereo image. When the control is turned fully
right or left you feed only that side of the signal to the mix.
Unity gain is provided by the control in the centre-detented
position.
These controls route the input channel signal to
any one or more of eight Auxiliary busses,
which combine the sends from each channel,
mixing them to separate outputs on the rear of
the mixer. Since they are independent of the
main outputs they can provide additional
sources for foldback, effects processors or extra
loudspeaker `fills'. Leave the knobs turned down
when not in use.
This send can be set pre or post-fade as required
by the AUX 3 PRE switch on the Master Section.
The input channel signal is always routed to MIX or GROUPS
as selected by the two ROUTING switches. The upper switch
selects MIX when released or GROUPS when pressed, while
the lower switch chooses between Groups 1-2 when released
or Groups 3-4 when pressed.
PFL When the latching PFL switch is
pressed, a pre-fade mono sum of the
channel signals is fed to the headphones or
monitor outputs, replacing the selected
source (either Mix or Tape Return) and is
also shown on the right PPM meter. This is
a useful way of listening to any one or
more signals without interrupting the main
mix, for adjusting signal quality or to check
the input level.
The linear FADER gives
you smooth control of the
overall signal level in the
channel strip, allowing
precise balancing of the
various source signals
being mixed to the
Master Section.
The ON switch turns on all
post-fade outputs from the
channel when pressed.