SoundCraft Spirit Folio 4 - Manual (Page 3)

The mic input socket at the rear of the
mixer accepts XLR-type connectors and
is designed to suit a wide range of
BALANCED or UNBALANCED low-level
signals. Professional dynamic,
condenser or ribbon mics are best
because these will be LOW
IMPEDANCE and therefore offer best
noise immunity. Each mic input has a
switch to turn on +48V PHANTOM
POWER providing a suitable powering
voltage for professional condenser
mics. DO NOT use unbalanced sources
with the phantom power switched on.
The voltage on pins 2 & 3 of the XLR
connector may cause serious damage.
Unplug any mics if you want to use the
corresponding LINE Input to avoid the
load presented by the mic from
affecting the Line Input gain.
These jacks are an ideal
place to connect the playback
of a tape machine or the output of
an effects unit, without using up any
of the LINE inputs. The input is
unbalanced.
LINE INPUT Accepts 3-pole
`A' gauge (TRS) jacks. Use
this input for sources other
than mics, such as
keyboards, drum machines,
synths, tape machines or
guitars. The input is
BALANCED for low noise
and immunity from
interference, but you can
use UNBALANCED sources
by wiring up the jacks as
shown below, although you
should then keep cable
lengths as short as possible
to minimise interference
pick-up on the cable.
Unplug anything in the MIC
input if you want to use this
socket.
These sockets accept 3-pole `A'
gauge (TRS) jacks. Use these inputs
for sources such as keyboards,
drum machines, synths, tape
machines or as returns from
processing units. The inputs are
BALANCED for low noise and
immunity from interference, but you
can use UNBALANCED sources by
wiring up the jacks as shown,
although you should then keep
cable lengths as short as possible to
minimise interference pick-up.
These are pairs of unbalanced
inputs suitable for tape playback or
outputs from reverb units or other
effects. The inputs are suitable for
signals at -10dBV level (gain
clockwise) to +4dBu.
Connects to the Folio 4
Power Supply.
These independent unbalanced
outputs are post Mix Insert, pre-fader,
and are ideal for recording concerts
to -10dBV tape inputs.
SPIRIT FOLIO 4