SoundCraft SPIRIT LIVE 4 2, User Manual

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44 HHII-PPAASSSS FFIILLTTEERR
Pressing this switch inserts a 18dB per octave 100Hz Hi-Pass Filter in the signal path,
immediately after the input amplifier. This is particularly useful in live PA situations to
reduce stage rumble or ‘popping’, and its use is strongly recommended, even on male
vocals. It can also be used for filtering out low frequency hum.
55 EEQQUUAALLIISSEERR
The Equaliser(EQ) comprises four sections. The upper control provides H.F.(treble)
boost and cut of +/-15dB and the lower control provides L.F. (bass) boost and cut of
+/-15dB.
The centre two pairs of knobs are arranged as HI and LO MID frequency sections,
with a cut/boost control (lower knob) of +/- 15dB, and a SWEEP(frequency) control
which determines at which frequency the boost/cut action will be centered. These MID
sections, with a combined frequency range from 80Hz to 13kHz are particularly versatile
for vocals, enabling particular characteristics of the singer to be lifted or suppressed very
precisely.
Set the cut/boost control of each section to the centre-detented position when not
required.
66 EEQQ SSW WIITTCCHH
The EQ switch bypasses the Equalisation section when released. Alternately pressing
and releasing the switch provides an easy way of comparing the equalised and
unequalised signals.
77 AAUUXXIILLIIAARRYY SSEENNDDSS
These controls route the input channel signal to any one or more Auxiliary buses.
These are separate from the main outputs and can therefore provide additional outputs
for foldback, echo units or extra loudspeaker `fills’.
AUX 1, 2 & 3 are derived before the channel fader (PRE-FADE), and are therefore
unaffected by the fader position. This makes them particularly suitable for foldback or
monitor feeds, which need to be controlled separately from the main P.A. mix. Aux 3
may be selected internally to be post-fade if required.
AUX 5 and 6 are derived after channel fader (POST-FADE), and therefore follow any
changes in fader level. They are normally 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 normally POST-FADE, but may be altered globally to be PRE-FADE by
pressing the AUX 4 PRE switch on the Master section.
All pre-fade sends are normally POST-EQ, but may be selected to PRE-EQ by changing
internal jumpers. Note that the sends are not affected by the position of the EQ switch
All of the Aux Sends are muted when the MUTE switch is pressed.
88 PPAANN
The PAN control determines the position of the signal within the stereo mix image or
may be used to route the channel signal to particular output GROUPS as selected by the
ROUTING SWITCHES (see below). Rotation fully anticlockwise feeds the signal solely
to the Left mix buss or Groups 1 and 3, while rotation clockwise sweeps the image to
the Right buss or Groups 2 and 4.
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The input channel signal may be routed to the main Stereo MIX (L-R) or pairs of
GROUP busses (1-2, 3-4), by pressing the respective switches. These may be used in
conjunction with the PAN control (8 above) to route the channel signal proportionately
to any of the selected busses.