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INTRODUCTION
Thank you for purchasing a SPIRIT FOLIO SX mixer, brought to you with pride by the SPIRIT team of Andy, Colin,
Chris, James, Simon, Mukesh, Graham, Martin, Paul, Matt and Peter, with the support of many others - we hope you will
have as much fun using it!
Owning a SPIRIT console brings you the expertise and support of one of the industry’s leading manufacturers and the
results of over 23 years experience supporting some of the biggest names in the business.
Built to the highest standards using quality components and new surface mount technology, FOLIO SX is designed to
be as easy to use as possible, but some time spent NOW, looking through this manual and getting to know your new
mixer will give you lots of helpful tips and confidence, away from the pressures of a live session. Don’t be afraid to experi-
ment to find out how each control affects the sound - this will only extend your creativity and help you to get the best
from your mixer.
Installation and Safety Precautions
Installing the Mixer
orrect connection and positioning of your mixer is important for successful and trouble-free operation. The following
Csections are intended to give guidance with cabling, connections and configuration of your mixer.
o Choose the mains supply for the sound system with care, and do not share sockets or earthing with lighting dimmers.
o Position the mixer where the sound can be heard clearly.
o Run audio cables separately from dimmer wiring, using balanced lines wherever possible. If necessary, cross audio and
lighting cables at right angles to minimise the possibility of interference. Keep unbalanced cabling as short as possible.
o Check your cables regularly and label each end for easy identification.
SAFETY PRECAUTIONS
For your own safety and to avoid invalidation of the warranty please
read this section carefully.
The FOLIO SX mixer must only be connected through the Power Supply supplied.
The wires in the mains lead are coloured in accordance with the following code:
Earth:
Neutral: Blue
Live: Brown
Green and Yellow
(Green/Yellow - US)
(White - US)
(Black - US)
As the colours of the wires in the mains lead may not correspond with the coloured markings identifying the terminals in
your plug, proceed as follows:
The wire which is coloured Green and Yellow must be connected to the terminal in the plug which is marked with the
letter E or by the earth symbol.
The wire which is coloured Blue must be connected to the terminal in the plug which is marked with the letter N.
The wire which is coloured Brown must be connected to the terminal in the plug which is marked with the letter L.
Ensure that these colour codings are followed carefully in the event of the plug being changed.
To avoid the risk of fire, replace the mains fuse only with the correct value fuse, as
indicated on the power supply.
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CONNECTING IT UP
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WIRING UP
Please refer to pages 27/28 for additional wiring details.
MIC INPUT
Balanced Mic
XLR
The mic input accepts XLR-type connectors and is designed to suit a wide range of
BALANCED or UNBALANCED low-level signals, whether from delicate vocals
requiring the best low-noise performance or close-miked drum kits needing maximum
headroom. Professional dynamic, condenser or ribbon mics are best because these
will be LOW IMPEDANCE. While you can use low-cost HIGH IMPEDANCE mics,
you do not get the same degree of immunity to interference on the microphone cable
and as a result the level of background noise may be higher. If you turn the PHAN-
TOM POWER on, the socket provides a suitable powering voltage for professional
condenser mics.
2. Hot(+ve)
3. Cold(-ve)
1. Screen
Unbalanced Mic
XLR
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.
BALANCED dynamic mics may normally be used with phantom power
switched on (contact your microphone manufacturer for guidance).
2. Hot(+ve)
Link 3
to 1
1. Screen
The input level is set using the input SENS knob.
The LINE input offers the same gain range as the MIC input, but at a higher input
impedance. This is suitable for most line level sources, and provides the gain needed
for lower level keyboards and high impedance microphones.
Balanced
3 pole Jack
Unbalanced
3 pole Jack
Hot (+ve)
Cold (-ve)
Gnd/Screen
Signal
WARNING - Start with the input SENS knob turned fully anticlockwise when
plugging high level sources into the LINE input to avoid overloading the
input channel or giving you a very loud surprise!
Gnd/Screen
Gnd/Screen
Tip
LINE INPUT
Ring
Sleeve
Accepts 3-pole `A’ gauge jacks, or 2-pole mono jacks which will automatically
ground the ‘cold’ input. 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, although you should then keep cable lengths as short as
possible to minimise interference pick-up on the cable. Note that the ring must be
grounded if the source is unbalanced. Set the input level using the SENS knob, starting
with the knob turned fully anticlockwise. Unplug any MIC connection when using the
LINE input.
Inserts
Signal Send
Signal Return
Gnd/Screen
Tip
INSERT POINT
Ring
Sleeve
The unbalanced, pre-EQ insert point is a break in the channel signal path, allowing
limiters, compressors, special EQ or other signal processing units to be added in the
signal path. The Insert is a 3-pole ‘A’ gauge jack socket which is normally bypassed.
When a jack is inserted, the signal path is broken, just before the EQ section.
The signal from the channel appears on the TIP of the plug and is returned on the
RING, with the sleeve as a common ground.
The Send may be tapped off as an alternative pre-fade, pre-EQ direct output if
required, using a lead with tip and ring shorted together so that the signal path is not
interrupted.
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STEREO INPUTS 13/14 & 17/18
These accept RCA phono jacks to allow easy connection to hi-fi equipment or DAT
players. The input is unbalanced, and ideal for pre-show music sources or signals that do
not require any EQ or effects.
Mix & Sub Outputs
Aux Outputs
STEREO INPUTS 15/16 & 19/20
Mono Output
These accept 3-pole `A’ gauge jacks, or 2-pole mono jacks which will automatically
ground the ‘cold’ input. Use these inputs for sources such as keyboards, drum machines,
synths, tape machines or as returns from processing units. The input is 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 on the cable. Note that the ring must be
grounded if the source is unbalanced.
Signal +
Signal -
Screen
Mono sources can be fed to both paths by plugging into the Left jack only.
Mix Inserts
MIX INSERTS
Signal Send
Signal Return
Gnd/Screen
The unbalanced, pre-fade Mix insert point is a break in the output signal path to allow
the connection of, for example, a compressor/limiter or graphic equaliser. The Insert is
a 3-pole ‘A’ gauge jack socket which is normally bypassed. When a jack is inserted, the
signal path is broken, just before the mix fader.
Tip
The mix signal appears on the TIP of the plug and is returned on the RING. A ‘Y’
lead may be required to connect to equipment with separate send and return jacks as
shown below:
Ring
Sleeve
Signal Send
Send to External Device
Insert Point
Headphones
Left Signal
Right Signal
Ground
Screen
Signal Return
Note: If XLRs are used, join Pins 1 & 3
and connect to cable screen.
Connect Pin 2 to signal.
Return from External Device
MIX & SUB OUTPUTS
The MIX and SUB outputs are on 3-pole 3-pole ‘A’ gauge jack sockets, wired as
shown, and incorporate impedance balancing, allowing long cable runs to balanced ampli-
fiers and other equipment.
Monitor Outputs
Direct Outputs
Signal
Ground
Ground
From FOLIO SX
(a) Balanced Connection
Impedance Balanced
Output
Signal
Screen
Signal
Screen
To External Device
Signal Ground
From FOLIO SX
Impedance Balanced
Output
(b) Unbalanced Connection
To External Device
Signal Ground
Experience has shown that sometimes it is better
not to connect screen at external device end.
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AUX OUTPUTS
The Aux outputs are on 3-pole ‘A’ gauge jack sockets, wired as shown on the left,
and incorporate impedance balancing, allowing long cable runs to balanced amplifiers and
other equipment.
Mix & Sub Outputs
Aux Outputs
Mono Output
CHANNEL DIRECT OUTPUTS
The Direct outputs are on 3-pole ‘A’ gauge jack sockets, wired as shown on the left,
and are unbalanced.
Signal +
Signal -
Screen
HEADPHONES
The PHONES output is a 3-pole ‘A’ gauge jack, wired as a stereo output as shown,
suitable for headphones of 200W or greater. 8W headphones are not recommended.
Polarity (PHASE)
Mix Inserts
You will probably be familiar with the concept of polarity in electrical signals and this
is of particular importance to balanced audio signals. Just as a balanced signal is highly
effective at cancelling out unwanted interference, so two microphones picking up the
same signal can cancel out, or cause serious degradation of the signal if one of the cables
has the +ve and -ve wires reversed. This phase reversal can be a real problem when
microphones are close together and you should therefore take care always to connect
pins correctly when wiring audio cables.
Signal Send
Signal Return
Gnd/Screen
Tip
Ring
Sleeve
Grounding and Shielding
For optimum performance use balanced connections where possible and ensure that
all signals are referenced to a solid, noise-free earthing point and that all signal cables
have their screens connected to ground. In some unusual circumstances, to avoid earth
`loops’ ensure that all cable screens and other signal earths are connected to ground
only at their source and not at both ends.
Headphones
Left Signal
Right Signal
Ground
If the use of unbalanced connections is unavoidable, you can mimimise noise by fol-
lowing these wiring guidelines:
l On INPUTS, unbalance at the source and use a twin, screened cable as though it
were balanced.
l On OUTPUTS, connect the signal to the +ve output pin, and the ground of the out-
put device to -ve. If a twin screened cable is used, connect the screen only at the
mixer end.
Monitor Outputs
Direct Outputs
Signal
Ground
Ground
l Avoid running audio cables or placing audio equipment, close to thyristor dimmer
units or power cables.
l Noise immunity is improved significantly by the use of low impedance sources, such
as good quality professional microphones or the outputs from most modern audio
equipment. Avoid cheaper high imped-
Example 1
ance microphones, which may suffer
from interference over long cable runs,
even with well-made cables.
Audio (with ground connected)
Mixer
Amplifier
Supply
Earth Loop
Mains Earth
Supply
l Grounding and shielding is still seen as a
black art, and the suggestions above are
only guidelines. If your system still hums,
an earth loop is the most likely cause.
Two examples of how an earth loop can
occur are shown on the right
Example 2
Left Signal (with ground connected)
Earth Loop
Mixer
Amplifier
Right Signal (with ground connected)
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Fault Finding Guide
Repairing a sound mixing console requires specialist skills, but basic Fault Finding is
within the scope of any user if a few basic rules are followed.
l Get to know the Block Diagram of your console (see page 29).
l Get to know what each component in the system is supposed to do.
l Learn where to look for common trouble spots.
The Block Diagram is a representative sketch of all the components of the console,
showing how they connect together and how the signal flows through the system. Once
you have become familiar with the various component blocks you will find the Block
Diagram quite easy to follow and you will have gained a valuable understanding of the
internal structure of the console.
Each Component has a specific function and only by getting to know what each part
is supposed to do will you be able to tell if there is a genuine fault! Many `faults’ are the
result of incorrect connection or control settings which may have been overlooked.
Basic Troubleshooting is a process of applying logical thought to the signal path
through the console and tracking down the problem by elimination.
l Swap input connections to check that the source is really present. Check both Mic
and Line inputs.
l Eliminate sections of the channel by using the insert point to re-route the signal to
other inputs that are known to be working.
l Route channels to different outputs or to auxiliary sends to identify problems on the
Master section.
l Compare a suspect channel with an adjacent channel which has been set up
identically. Use PFL and AFL to monitor the signal in each section.
Insert contact problems may be checked by using a dummy jack with tip and ring
shorted together as shown below. If the signal appears when the jack is inserted it
shows that there is a problem with the normalling contacts on the jack socket, caused by
wear or damage, or often just dirt or dust. Keep a few in your gig tool box.
Wire Link
Dummy Insert Bypass Jack
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GETTING TO KNOW YOUR CONSOLE
Mono Input Channel
1
2
1
DIRECT OUTPUT
The first eight channels have a dedicated Direct Output which allows direct connec-
tion to external devices, for example to feed Tape Machines or effects units. See the
‘Advanced Features’ section on page 18 for a full explanation of these outputs.
3
4
2
MIC INPUT
The mic input accepts XLR-type connectors and is designed to suit a wide range of
BALANCED or UNBALANCED signals. Professional dynamic, condenser or ribbon
mics are best because these will be LOW IMPEDANCE. You can use low-cost HIGH
IMPEDANCE mics, but the level of background noise will be higher. If you turn the
PHANTOM POWER on (top right-hand side of the mixer) the socket provides a suitable
powering voltage for professional condenser mics.
5
6
ONLY connect condenser microphones with the +48V
powering OFF, and ONLY turn the +48V powering on or off
with all output faders DOWN, to prevent damage to the
mixer or external devices.
7
TAKE CARE when using unbalanced sources, which may be damaged by the phan-
tom power voltage on pins 2 & 3 of the XLR connector.
Unplug any mics if you want to use the LINE Input. The input level is set using the
SENS knob.
3
4
LINE INPUT
8
9
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 BAL-
ANCED for low noise and top quality from professional equipment, 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. Unplug anything in the MIC input if you
want to use this socket. Set the input level using the SENS knob.
10
11
INSERT POINT (ALTERNATIVE DIRECT SEND)
The unbalanced, pre-EQ insert point is a break in the channel signal path, allowing
limiters, compressors, special EQ or other signal processing units to be added in the sig-
nal path. The Insert is a 3-pole ‘A’ gauge jack socket which is normally bypassed. When
a jack is inserted, the signal path is broken, just before the EQ section.
12
The Send may be tapped off as an alternative pre-fade, pre-EQ direct output if
required, using a lead with tip and ring shorted together so that the signal path is not
interrupted (see below).
13
Mono pre-fade
Direct Send
Signal Send
Insert Point
Wire Link
Screen
14
RCA Phono
centre
Link pins 1 & 3
XLR
XLR
1
3
Screen
2
Signal
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5
SENS
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.
Setting the knob to the `U’ mark gives unity gain for the LINE input. 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 16 to learn how to set SENS correctly.
6
7
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 sit-
uations to clean up the mix, reducing stage rumble or `popping’ from microphones.
dB
EQUALISER
20
100Hz
20k
Frequency/Hz
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.
Muddiness
& Rumble
dB
HF
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.
20
20k
20k
20k
Frequency/Hz
dB
MID
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.
20
Frequency/Hz
dB
LF
LF EQ
20
Frequency/Hz
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.
8
AUX SENDS
These are used to set up a 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 SEND 1
This is always PRE-FADE and therefore most appropriate for foldback or monitor
mixes or external submix.
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AUX SEND 2
This is normally POST-FADE, and would typically be used as an effects send, but may
be switched globally to PRE-FADE using the POST/PRE switch on the Master section,
providing a second foldback or monitor send if required.
1
2
AUX SEND 3
This is always POST-FADE for effects sends, external submix (or for Centre Voice
cluster or mono Tape mix).
3
4
9
PAN
This control sets the amount of the channel signal feeding the Right and Left MIX or
SUB buses, allowing you to move the source smoothly across the stereo image. When
the control is turned fully right or left you are able to route the signal at unity gain to
either left or right outputs individually.
10 ON
5
6
All outputs from the channel except inserts are muted when the ON switch is
released and enabled when the switch is down, allowing levels to be pre-set before the
before the signal is required.
11
MIX / SUB
The channel signal may be routed to either the main MIX (switch UP) or SUB buses
(switch DOWN). The left/right balance is set by the PAN control (see above) allowing
the signal to be sent proportionately to any of the buses.
7
12 FADER
The 100mm FADER, with a custom-designed law to give even smoother control of
the overall signal level in the channel strip, allows precise balancing of the various source
signals being mixed to the Master Section. You get most control when the input SENSI-
TIVITY is set up correctly, giving full travel on the fader. See the `Initial Set Up’ section
on page 16 for help in setting a suitable signal level.
8
9
13 DIRECT PRE/POST
See Direct Output (1) and ‘Advanced Features’ on page 18 for an explanation of the
Direct Output. The output may be selected as either
PRE or POST fader. The factory default setting is
POST-FADER, but this may be changed by
moving an internal switch as
10
11
shown on the right.
Remove the protective
grommet to gain access to the
switch and move the switch
carefully upwards using a small
screwdriver or the end of a
12
13
POST-FADE
PRE-FADE
pencil. It is advisable to turn
the unit off before making this adjustment.
Always check all outputs after adjusting to ensure that switching has been successful.
14 PFL
14
When the latching PFL switch is pressed, the pre-fade signal is fed to the headphones,
control room output and meters, where it replaces the selected monitor source (MIX,
SUB or 2TK). The PFL/AFL LED on the Master section illuminates to warn that a PFL is
active. This is a useful way of listening to any required input signal without interrupting
the main mix, for making adjustments or tracing problems.
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STEREO INPUT CHANNEL
1
4
Each stereo input channel comprises two pairs of inputs per channel strip:
1
INPUTS 13/14 & 17/18
These inputs are unbalanced on RCA phono connectors, and are intended for use
with CD players, DAT machines or Hi-Fi equipment. Alternatively they may be used as
simple effects returns or stereo instrument inputs.
2
3
LEVEL
The LEVEL control sets the level of the channel signal.
MIX/SUB
2
3
The MIX/SUB switch allows the signal to be routed to either the main MIX (switch
up) or SUB mix (switch down).
4
INPUTS 15/16 & 19/20
5
These inputs accept 3-pole `A’ gauge (TRS) jacks. Use these inputs for sources such
as keyboards, drum machines, synths, tape machines or processing units. The inputs are
BALANCED for low noise and top quality from professional equipment, but you can use
UNBALANCED sources by wiring up the jacks as shown in the “Wiring it Up” section
earlier in this manual, although you should then keep cable lengths as short as possible.
Mono sources may be used by plugging into the left jack only.
6
5
6
GAIN
The GAIN control sets the input level to the channel, allowing matching to a wide
range of line level sources.
7
8
EQUALISER
HF EQ
Turn to the right to boost high (treble) frequencies, adding crispness to percussion
from drum machines, synths and electronic instruments. Turn to the left to cut these
frequencies, reducing hiss or excessive brilliance. Set the knob in the centre-detented
position when not required. The control has a shelving response giving 15dB of boost or
cut at 12kHz.
9
10
LF EQ
Turn to the right to boost low (bass) frequencies, adding extra punch to synths, gui-
tars and drums. Turn to the left to reduce hum, boominess or improve a mushy sound.
Set the knob to the centre-detented position when not required. The control has a
shelving response giving 15dB of boost or cut at 60Hz.
11
7
AUX SENDS
These are used to set up a 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).
12
AUX SEND 1
This is always PRE-FADE and therefore most appropriate for foldback or monitor
mixes.
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AUX SEND 2
1
4
This is normally POST-FADE, and would typically be used as an effects send, but may
be switched globally to PRE-FADE using the POST/PRE switch on the Master section, pro-
viding a second foldback or monitor send if required.
AUX SEND 3
This is always POST-FADE.
8
9
BALANCE
This control sets the amount of the channel signal feeding the Right and Left MIX or
SUB buses, 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 pro-
vided by the control in the centre-detented position.
2
3
ON
All outputs from the channel except inserts are muted when the ON switch is released
and enabled when the switch is down.
5
10 MIX / SUB
The channel signal may be routed in stereo to either the main MIX (switch UP) or SUB
buses (switch DOWN). The left/right balance is set by the BAL control (see above).
6
11
FADER
The 100mm 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. It is important that the input level is set correctly to give maximum travel on the
fader which should normally be used at around the `0’ mark. See the `Initial Set Up’ sec-
tion on page 16 for help in setting the right level.
7
8
12 PFL
When the latching PFL switch is pressed, the pre-fade signal is fed in mono to the head-
phones, control room output and meters, where it replaces the selected monitor source
(MIX, SUB or 2TK). The PFL/AFL LED on the Master section illuminates to warn that a
PFL is active. The Left and Right meters display the PFL signal in mono. This is a useful
way of listening to any required input signal without interrupting the main mix, for making
adjustments or tracing problems.
9
10
11
12
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Master Section
1
PHANTOM POWER
Many professional condenser mics need PHANTOM POWER, which is a
method of sending a powering voltage down the same wires as the mic signal.
Press the switch to enable the +48V power to all of the MIC inputs. The adjacent
LED illuminates when the power is active. TAKE CARE when using unbalanced
mics which may be damaged by the phantom power voltage. Balanced dynamic
mics can normally be used with phantom power switched on (contact your micro-
phone manufacturer for guidance)
1
3
2
4
Mics should always be plugged in, and all output faders
set to minimum before switching the Phantom Power
ON to avoid damage to external equipment
5
6
2
3
POWER INDICATOR
This LED lights to show when power is connected to the console.
7
8
BARGRAPH METERS
The three colour peak reading BARGRAPH METERS normally follow the
Monitor selection to show the level of the MIX RIGHT and MIX LEFT outputs,
giving you a constant warning of excessive peaks in the signal which might cause
overloading. Aim to keep the signal just touching the amber segments at peak lev-
els for best performance.
9
Similarly, if the output level is too low and hardly registering at all on the
meters, the level of background noise may become significant. Take care to set
up the input levels for best performance.
11
10
When any PFL switch is pressed, the meters switch to show the selected PFL
signal on both meters, in mono.
4
2TK LEVEL
The rotary control sets the level of the 2 Track Tape input, which is routed to
the headphones, monitor outputs and meters. These inputs, on RCA phono con-
nectors are an ideal to connect the playback of a tape machine for monitoring.
5
6
7
MIX/SUB
When this switch is released the meters and headphones monitor the Mix sig-
nal. Alternatively, pressing the switch selects the SUB mix as the monitor source.
2TK
Pressing the 2TK switch selects the 2TK input as the monitor source, instead
of the MIX or SUB signal (see MIX/SUB above).
MONITOR & PHONES LEVEL
This control sets the output level to the MONITOR LEFT & RIGHT outputs. If
HEADPHONES are plugged into the PHNS jack the Monitor outputs are cut off,
and the knob then sets the headphone listening level. When the PHONES are
unplugged the Monitor output is restored.
8
AUX MASTERS
Each Aux output has a master output level control and associated AFL switch.
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AUX AFLs
Just like the PFL switches on the channels, you can monitor each AUX out-
put by pressing the AFL switch. This routes the AUX output signal to the
MONITOR or PHONES, replacing any existing signal (normally the Monitor
receives either MIX, SUB or 2TK, see above). The METERS also switch from
the selected source to display the PFL/AFL signal and the PFL/AFL LED lights
to warn that a PFL or AFL switch is pressed. When you release the switch the
Monitor swaps back to the previous source.
1
3
2
4
AUX 2 POST/PRE
The input channels provide both Pre- and Post-Fade AUX 2 sends which
may be selected desk-wide on the Master Section. Press the POST/PRE switch
to make all of the AUX 2 Sends on the channel strips PRE-FADE. This means
that they will all be unaffected by the position of the channel faders, making
them ideal for FOLDBACK or MONITORING.
5
6
7
8
When the switch is released the AUX 2 Sends are all POST-FADE, and will
fade up and down with the channel faders. This is more suitable for effects
sends which need to fade out with the associated source.
9
MONO SUM
The Mix Left and Right signals are summed to a MONO output on a 3 pole
‘A’ gauge jack. Output level is set by the dedicated rotary control. Monitoring
of the Mono output, if required, but be done at the external equipment it
feeds, or the signal brought back to a spare console input.
9
11
10 MASTER FADERS
10
The MASTER FADERS set the final level of the MIX and SUB outputs, and
separate faders are provided for each output. These should normally be set
close to the `0’ mark if the input GAIN settings have been correctly set, to
give maximum travel on the faders for smoothest control.
11
SUB TO MIX
The SUB outputs may be used as independent outputs from the console,
or used as true subgroups, routed to the main Mix outputs. When the switch
is released the SUB signal feeds the SUB outputs only. With the switch
pressed the post-fade Sub Left and Right signals are routed to Mix Left and
Right respectively. The Sub outputs remain unaffected.
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USING YOUR FOLIO SX CONSOLE
he final sound from your P.A. system can only ever be as good as the weakest link in the
Tchain, and especially important is the quality of the source signal because this is the starting
point of the chain. Just as you need to become familiar with the control functions of your mixer,
so you must recognise the importance of correct choice of inputs, microphone placement and
input channel settings. However, no amount of careful setting up can take account of the spon-
taneity and unpredictability of live performance and the mixer must be set up to provide `spare’
control range to compensate for changing microphone position and the absorption effect of a
large audience (different acoustic characteristics from sound check to show).
Microphone Placement
Cardioid
Careful microphone placement and the choice of a suitable type of microphone for the job is
one of the essentials of successful sound reinforcement. The diagrams on the left show the dif-
ferent pick-up patterns for the most common types of microphone. Cardioid microphones are
sensitive to sound coming from in front, and hypercardioid microphones offer even greater
directivity, with a small amount of pickup behind the microphone. These types are ideal for
recording vocalists or instruments, where rejection of unwanted sounds and elimination of feed-
back is important. The aim should be to place the microphone as close as physically possible to
the source, to cut out unwanted surrounding sounds, allow a lower gain setting on the mixer
and avoid feedback. Also a well-chosen and well-placed microphone should not need any appre-
ciable equalisation.
Response
Hypercardioid
Response
Omnidirectional
Response
There are no exact rules - let your ears be the judge. In the end, the position that gives the
desired effect is the correct position!
Initial Set Up
Once you have connected up your system (see the sections on connection and wiring earlier
in this manual for guidance) you are ready to set initial positions for the controls on your mixer.
The front panel drawing inside the rear cover shows typical initial
control positions which may be found a useful guide to setting up
the mixer for the first time.
Set up individual input channel as follows:
l Connect your sources (microphone, keyboard etc.) to the required inputs.
Note: Phantom powered mics should be connected before the +48V is switched on.
Route the channel to Mix.
l Set Master faders at 0, input faders at 0, and set power amplifier levels to about 70%.
l Provide a typical performance level signal and press the PFL button on the first channel,
monitoring the level on the bargraph meters.
l Adjust the input gain until the meter display is in the amber section, with occasional peaks to
the first red LED at a typical maximum source level. This allows sufficient headroom to
accommodate peaks and establishes the maximum level for normal operation (but see note
below).
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l Repeat this procedure on other channels as required. As more channels are added to
the mix, the meters may move into the red section. Adjust the overall level using the
Master Faders if necessary.
l Listen carefully for the characteristic sound of `feedback’. If you cannot achieve satis-
factory input level setting without feedback, check microphone and speaker place-
ment and repeat the exercise. If feedback persists, it may be necessary to use a
Graphic Equaliser to reduce the system response at particular resonant frequencies.
Note: The initial settings should only be regarded as a starting point for your mix. It is
important to remember that many factors affect the sound during a live performance,
for instance the size of the audience!
You are now ready to start building the mix and this should be done progressively,
listening carefully for each component in the mix and watching the meters for any hint of
overload. If this occurs, back off the appropriate Channel Fader slightly until the level is
out of the red segments, or adjust the Master Faders.
Remember that the mixer is a mixer, not an amplifier. Increasing the overall level is
the job of the amplifier, and if it is found impossible to provide adequate level, it is proba-
ble that the amplifier is too small for the application. Choose your amplifier carefully,
and do not try to compensate for lack of power by using the mixer to increase output
level.
Note:
The level of any source signal in the final output is affected by many factors, principal-
ly the Input Sensitivity control, Channel Fader, Sub and Mix Faders. You should try to use
only as much microphone gain as required to achieve a good balance between signals,
with the faders set as described above.
If the input gain is set too high, the channel fader will need to be pulled down too far
in compensation to leave enough trav-
Clipped
Signal
el for successful mixing and there is a
greater risk of feedback because small
fader movements will have a very sig-
nificant effect on output level. Also
Noise
there will be a chance of distortion as
the signal overloads the channel and
causes clipping.
If the signal level is too high, clipping distortion
may occur.
If the gain is set too low, you will
not find enough gain on the faders to
Signal
bring the signal up to an adequate
level, and backgound hjiss will be
more noticeable.
Noise
This is illustrated on the right:
If the signal level is too low it may be masked
by the noise.
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Advanced Features
1
DIRECT OUTPUT
The Direct outputs on the first eight channels allow you to record signals direct to a
multitrack tape machine. Normally they are set POST-FADER but can be changed to
PRE-FADER by moving the internal PRE/POST switch (13) accessible through an aper-
ture covered by a grommet beside the fader on channel 1 (see below).
POST-FADE
PRE-FADE
In the POST-FADER position the outputs may be used as individual effects sends or
to provide fader control of recording levels in a studio recording application. For live
recording, the outputs would normally be set to PRE-FADE, so that the direct output
levels remain unaffected by fader settings for the main PA mix.
The direct output level may be monitored by pressing the PFL switch on the appro-
priate channel to feed the pre-fade signal to the monitors and the bargraph meters.
In applications where more than 8 tracks are being created, the Direct outputs may
be split to feed multiple tape tracks in blocks of 8, and individual tracks enabled on the
recorder.
Note also that the insert sends may also be used as an alternative pre-fade, pre-EQ
direct output, using a lead with tip and ring shorted together so that the signal path is not
interrupted.
Refer to page 9 for an example.
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USING THE FOLIO SX ON LOCATION
The FOLIO SX may be powered from a DC source of 11-18V using the optional
Portapower unit, for applications where a source of mains power is unavailable.
Contact your dealer for further details, quoting Spirit Part No ZZ2849.
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Application 1 - LIVE SOUND REINFORCEMENT
This drawing shows a typical configuration for sound reinforcement with the main PA fed from Mix L & R, plus an addi-
tional centre fill fed from the Mono output. The Aux sends are used for foldback and effects, and Sub L & R are used to
feed a recorder. In this case all channels would be routed to SUB, and SUB TO MIX pressed to routed all sources to SUB
and MIX.
Using Delay IN REINFORCEMENT SYSTEMS
The drawing below illustrates how to calculate delay settings for fill speakers in multiple speaker installations.
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APPLICATION 2 - MULTISPEAKER APPLICATIONS
This configuration demonstrates how multiple speaker configurations can be driven by the FOLIO SX.
APPLICATION 3 - PLACES OF WORSHIP
This mono configuration uses the Mono output to drive the main speaker system and an induction loop for the hard of
hearing. Aux sends are used for monitors and effects and Mix L & R feed a cassette or DAT machine to record the occa-
sion if required.
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APPLICATION 4 - RECORDING
The direct outputs on channels 1-8 may be used to feed a multitrack recorder as shown. The direct outputs should be
set to PRE, so that they are unaffected by fader position. The Mix outputs are used for a preliminary stereo mix on a DAT
recorder.
Application 5 - LINKING TWO FOLIO SX CONSOLES
Two or more FOLIO SX consoles may be combined to create a larger number of input channels by connecting Mix
and Aux outputs from one console to the Stereo and Line inputs on another as shown. Note that the PFL/AFL systems
remain separate on each console.
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CARE OF YOUR MIXER
General Precautions
l Avoid storing or using the mixer in conditions of excessive heat or cold, or in positions
where it is likely to be subject to vibration, dust or moisture.
l Keep the mixer clean using a soft dry brush, and an occasional wipe with a damp cloth or
ethyl alcohol. Do not use any other solvents which may cause damage to paint or plastic
parts.
l Avoid placing drinks or smoking materials on or near the mixer. Sticky drinks and cigarette
ash are frequent causes of damage to faders and switches.
Regular care and inspection will be rewarded by a long life and maximum reliability.
Glossary
AFL (After Fade Listen) a function that allows the operator to monitor the post-fade signal in a
channel independently of the main mix.
auxiliary send
an output from the console comprising a mix of signals from channels and
groups derived independently of the main stereo/group mixes. Typically
the feeds to the mix are implemented on rotary level controls.
balance
the relative levels of the left and right channels of a stereo signal.
balanced
a method of audio connection which ‘balances’ the signal between two
wires and a screen which carries no signal. Any interference is picked up
equally by the two wires, but out of phase resulting in cancellation of the
interference signal.
clipping
the onset of severe distortion in the signal path, usually caused by the peak
signal voltage being limited by the circuit’s power supply voltage.
DAT
Digital Audio Tape, a cassette-based digital recording format.
dB (decibel)
a ratio of two voltages or signal levels, expressed by the equation
dB=20Log (V /V ). Adding the suffix ‘u’ denotes the ratio is relative to
10 1 2
0.775V RMS.
DI(direct injection)/DI Box
the practice of connecting an electric musical instrument directly to the
input of the mixing console, rather than to an amplifier and loudspeaker
which is covered by a microphone feeding the console.
direct output
equaliser
a post fade line level output from the input channel, bypassing the summing
amplifiers, typically for sending to individual tape tracks during recording.
a device that allows the boosting or cutting of selected bands of frequen-
cies in the signal path.
fader
a linear control providing level adjustment
feedback
the `howling’ sound caused by bringing a microphone too close to a loud-
speaker driven from its amplified signal.
foldback
a feed sent back to the artistes via loudspeakers or headphones to enable
them to monitor the sounds they are producing.
frequency response
gain/input sensitivity
the variation in gain of a device with frequency.
the variation in level of the signal
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(sub) group
headroom
an output into which a group of signals can be mixed.
the available signal range above the nominal level before clipping
occurs.
highpass filter
a filter that rejects low frequencies.
impedance balancing
a technique used on unbalanced outputs to minimise the effect of
hum and interference when connecting to external balanced inputs.
insert
a break point in the signal path to allow the connection of external
devices, for instance signal processors or to another mixer line level
signals at a nominal level of -10 to +6dBu, usually coming from a
low impedance source.
pan (pot)
abbreviation of ‘panorama’: controls levels sent to left and right out-
puts.
peaking
an equaliser response curve affecting only a band of frequencies i.e.
based on a bandpass response.
PFL (pre-fade listen)
phase
a function that allows the operator to monitor the pre-fade signal in
a channel independently of the main mix.
a term used to describe the relationship of two audio signals.
In-phase signals reinforce each other, out-of-phase signals result in
cancellation.
polarity
a term used to describe the orientation of the positive and negative
poles of an audio connection. Normally connections are made with
positive to positive, negative to negative and this would correct
polarity. If this is reversed, the result will be out-of-phase signals
(see ‘phase’ above).
post-fade
pre-fade
the point in the signal path after the monitor or master fader and
therefore affected by fader position.
the point in the signal path before the monitor or master fader posi-
tion and therefore unaffected by the fader position.
rolloff
a fall in gain at the extremes of the frequency response.
shelving
an equaliser response affecting all frequencies above or below the
break frequency i.e. a highpass or lowpass derived response.
spill
acoustic interference from other sources.
a momentary rise in the signal level.
transient
unbalanced
a method of audio connection which uses a single wire and the
cable screen as the signal return. This method does not provide the
noise immunity of a balanced input (see above)
+48V
the phantom power supply, available at the channel mic inputs, for
condenser microphones and active DI boxes.
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TYPICAL SPECIFICATIONS
NOISE
Measured RMS, 20Hz to 20kHz Bandwidth
Line inputs selected at unity gain and terminated 150R
AUX, MIX, SUB O/Ps 16 Inputs routed, faders & pots down
<85 dBu
-129 dBu
E.I.N.
Microphone Input, Maximum Gain, terminated 150R
CROSSTALK
1kHz
10kHz
Channel mute
Fader cutoff (rel to 0 mark)
Routing isolation
<95 dB
<90dB
<90dB
<85dB
<85 dB
<80dB
<80dB
<80dB
Aux Sends pots offness
FREQUENCY RESPONSE
Mic/Line In to any output
25Hz to 30kHz
Mic Sens. -30dBu, +20dBu at all outputs @ 1kHz
INPUT & OUTPUT IMPEDANCES
Microphone Input
<1dB
T.H.D.
< 0.006%
1.8 kW
10 kW
12 kW
10 kW
75 W
Line Input
Stereo Input A/B
Stereo Input C/D
Direct Out, Sub-Mix, Aux, Insert
INPUT & OUTPUT LEVELS
Mic Input Maximum Level
Line Input Maximum Level
Stereo Input Maximum Level
Headphones (@200W)
+22 dBu
>+30dBu
>+30 dBu
150mW
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DIMENSIONS
All dimensions are in millimetres (inches in brackets).
80.0
(3.15")
inc. conns
33.0
(1.29")
511.5
(20.14")
40.0
(1.57")
440.0 (17.32")
479.0 (18.86")
60.0
(2.36")
Rack Mount Option
inc.
knobs
443.5
(17.46")
10U
440.0 (17.32")
483.0 (19")
FITTING THE Rack MounT OPTION
The FOLIO SX may be rack mounted using the optional rack-mounting kit which requires only a posidriv screwdriver
and pliers for installation. The procedure is as follows:
o Remove the moulded side cheeks by releasing 3 screws each side.
Rack Mount
o Remove the base panel by releasing 10 screws, noting the small cutout at the front edge.
Normal
o Carefully release the power connector by sqeezing the moulded side clips with pliers
(note that you do not have to disconnect the wiring) and reposition it in the cutout on
the bottom edge of the panel (see illustration).
Rear of fascia
o Replace the base panel with the cutout at the rear of the desk, positioned over the
power connector.
Power Supply Connector Location
o Fit the rack-mount side brackets with the mounting flanges to the front of the desk.
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APPENDIX 1 - TYPICAL CONNECTING LEADS
Balanced - Line, Mix L & R, Sub L & R, Aux, Stereo Inputs
Unbalanced - Direct Output, Control Room L & R, Stereo Inputs
Insert Leads - Mono Inserts, Mix L & R Inserts
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’Y’ Leads (Balanced)
Headphone Splitter
Headphone Separator
’Y’ Leads (Unbalanced)
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SYSTEM BLOCK DIAGRAM
P F L / A F L B U S
S U B R I G H T B U S
S U B L E F T B U S
M I X R I G H T B U S
M I X L E F T B U S
A U X B U S S E S
▲
▲
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A Harman International Company
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