Sonifex S0 Instruction Manual

S0 Radio Broadcast Mixer
User Handbook

bS0 User Handbook
©Sonifex Ltd, 2013
All Rights Reserved
Revision 1.02, July 2013
Sonifex Ltd, 61, Station Road, Irthlingborough,
Northants, NN9 5QE, England.
Tel : [phone]
Fax : [phone]
Email : [email protected]o.uk or technical[email protected].uk
Web : http://www.sonifex.co.uk
Information in this document is subject to change without notice and does not represent
a commitment on the part of Sonifex Ltd. Sonifex Ltd shall not be liable for any loss or
damage whatsoever arising form the use of information or any error contained in
this manual.
No part of this manual may be reproduced or transmitted in any form or by any means,
electronic or mechanical, including photocopying, recording, or information storage and
retrieval systems, for any purpose other than the purchaser’s personal use, without the
express written permission of Sonifex Ltd.
Unless otherwise noted, all names of companies, products and persons contained herein are
part of a completely ctitious adaptation and are designed solely to document the use of
Sonifex products.
S0 USER HANDBOOK
S0 USER HANDBOOK

S0 User Handbook c
CONTENTS
CONTENTS
W
Warranty & Safety Information i
Warranty and Liability i
Returning the Warranty Card iii
Unpacking the S0 iii
Safety of Mains Operated Equipment iv
Fuse Rating iv
Power Cable and Connection iv
WEEE & RoHS Directives - Sonifex Statement v
Reporting Faults vi
Introduction 1
Feature Summary & Overview of Use 2
Features 2
Input Channels 3
USB Audio for Playback & Recording 3
Output Channels 4
Monitoring & Headphone Limiter 4
Metering 4
Talkback 4
Channel Remotes 4
Conguration Settings 5
Installation Notes 5
Atmosphere 5
Electromagnetic Radiation 5
Dimensions and Cut-Out Size for Flush Mounting 5
User Guide 6
S0 Input Channels 6
Channels 1-4 Mono Balanced Mic/Stereo Unbalanced Line inputs 6
MIC INPUT 6
MIC TRIM 6
LINE INPUT 6
REMOTE OUTPUT 6
MIC / LINE Button 6
PGM Button 7
REC Button 7
TRIM Control 7
PAN/BAL Control 7
CUE PFL Button 7
FADER Control 8
START Button 8
Channels 5-8 Dual Stereo Unbalanced Line/USB Audio Inputs 9
LINE INPUTS 9
REMOTE OUTPUT 9
INP1/INP2 Button 9
PGM Button 9
REC Button 9
TRIM Control 10
BAL Control 10
CUE PFL Button 10
FADER Control 10
START Button 10
Channel 9 Telephone Interface/Stereo Unbalanced Auxiliary Inputs 11
AUX INPUT 11
R-BAL and C-BAL Controls 11

dS0 User Handbook
CONTENTS
CONTENTS
W
LINE (Telephone Interface) 11
HANDSET 11
REMOTE OUTPUT 11
TEL/AUX Button 11
PGM Button 12
REC Button 12
TRIM Control 12
PAN/BAL Control 12
CUE/PFL & TB Button 13
FADER Control 13
LINE HOLD Button 13
Main Outputs 14
PROGRAM OUTPUT 14
S0 Monitor I/O & USB Channels 15
MONITOR OUTPUT 15
LIGHT CONTROL 15
PRESENTER Headphones 15
GUEST Headphones 15
H/PHONE LIMIT Control 15
USB AUDIO 15
USB SERIAL 15
EXT 1 INPUT 16
LED Meter Display 16
PGM, REC & EXT 1 Buttons 16
Monitor AUTO CUE/PFL Button 17
Monitor MUTE Indicator 17
AUX INPUT CHANNEL 9 18
Presenter AUTO CUE/PFL Button 18
Presenter SPLIT CUE/PFL Button 18
PRESENTER Headphones 18
Guest AUTO CUE/PFL Button 18
Guest TALKBACK Button 18
GUEST Headphones 18
Using the Telephone Interface 19
Making A Telephone Call and Routing It Through The S0 19
Receiving A Telephone Call and Routing It Through The S0 19
Conguration Options 20
Modifying the Conguration Options Using Setup Mode 20
Page 1 – Input Select Modes (LED on PPM Scale 1) 21
Page 2 – PGM and REC Button Modes (LED on PPM Scale 2) 22
Page 3 – PFL Modes (LED on PPM Scale 3) 22
Page 4 – Remote Output Modes (LED on PPM Scale 4) 23
Modifying the Conguration Options Using SCi Software 24
Download the latest SCi Software 24
Connecting the USB Serial Port 24
Using SCi For The First Time 24
USB Audio 29
USB Audio Output from the S0 29
USB Audio Input to the S0 29

S0 User Handbook e
CONTENTS
CONTENTS
W
Connectors and Cabling 30
XLR 3 Pin Connectors 30
RCA (Phono) Connectors 30
6.35mm (¼”) ‘A’ Gauge Stereo Jack Plugs 30
Technical Specication For S0 32

fS0 User Handbook
FIGURES
FIGURES
Figures
Fig 1-1: S0 Mixer - Top View. 1
Fig 1-2: S0 Mixer - Cut-out Sizes. 5
Fig 2-1: Channel 1 Rear Panel Connectors. 6
Fig 2-2: Channel 1 MIC/LINE Button. 6
Fig 2-3: Mic/Live Channel Strip. 7
Fig 2-4: Channel 1 FADER Control &START Button. 8
Fig 2-5: Channel 5 Rear Panel Connectors. 9
Fig 2-6: Dual Stereo Channel Input & Bus Selections. 9
Fig 2-7: Dual Stereo Channel Strip. 10
Fig 2-8: Channel 9 Rear Panel Connectors. 11
Fig 2-9: Channel 9 TEL/AUX Button. 11
Fig 2-10: Channel 9 Strip. 12
Fig 2-11: CUE/ PFL, Fader & LINE/HOLD Button. 13
Fig 2-12: Mains Outputs. 14
Fig 2-13: MONITOR I/O & USB. 15
Fig 2-14: LED Meter Display. 16
Fig 2-15: PGM, REC and EXT 1 Buttons. 16
Fig 2-16: Monitor, Presenter and Guests Controls. 17
Fig 3-1: SCI Launcher Window. 24
Fig 3-2: SCI Channel Conguration Screen. 25
Fig 3-3: SCI Monitor Conguration Screen. 26
Fig 3-4: SCI Info & Updates Screen. 27
Fig 3-5: Reset Switch. 28
Fig 4-1: PC Device List. 29
Fig 5-1: XLR 3 Pin Connectors. 30
Fig 5-2: RCA (Phone) Connectors. 30
Fig 5-3: 6.35mm (¼ inch) ‘A’ Gauge Stereo Jack Plugs Used For Headphones
And Monitor Outputs. 30
Fig 5-4: 6.35mm (¼ inch) ‘A’ Gauge Stereo Jack Plugs used for Remote Outputs. 31
Fig 5-5: 6.35mm (¼ inch) ‘A’ Gauge Stereo Jack Plugs used for Light Control Output. 31

S0 User Handbook i
WARRANTY & SAFETY
INFORMATION
WARRANTY & SAFETY INFORMATION
Warranty & Safety Information
Warranty and Liability
Important: the purchaser is advised to read this clause
(a) The Company agrees to repair or (at its discretion) replace Goods which are found to
be defective (fair wear and tear excepted) and which are returned to the Company
within 12 months of the date of despatch provided that each of the following are
satised:
(i) notication of any defect is given to the Company immediately upon its
becoming apparent to the Purchaser;
(ii) the Goods have only been operated under normal operating conditions and
have only been subject to normal use (and in particular the Goods must have
been correctly connected and must not have been subject to high voltage or
to ionising radiation and must not have been used contrary to the Company’s
technical recommendations);
(iii) the Goods are returned to the Company’s premises at the Purchaser’s expense;
(iv) any Goods or parts of Goods replaced shall become the property of the
Company;
(v) no work whatsoever (other than normal and proper maintenance) has been
carried out to the Goods or any part of the Goods without the Company’s prior
written consent;
(vi) the defect has not arisen from a design made, furnished or specied by the
Purchaser;
(vii) the Goods have been assembled or incorporated into other goods only in
accordance with any instructions issued by the Company;
(viii) the defect has not arisen from a design modied by the Purchaser;
(ix) the defect has not arisen from an item manufactured by a person other than
the Company. In respect of any item manufactured by a person other than the
Company, the Purchaser shall only be entitled to the benet of any warranty or
guarantee provided by such manufacturer to the Company.
(b) In respect of computer software supplied by the Company the Company does not
warrant that the use of the software will be uninterrupted or error free.

ii S0 User Handbook
WARRANTY & SAFETY INFORMATION
WARRANTY & SAFETY
INFORMATION
(c) The Company accepts liability:
(i) for death or personal injury to the extent that it results from the negligence of
the Company, its employees (whilst in the course of their employment) or its
agents (in the course of the agency);
(ii) for any breach by the Company of any statutory undertaking as to title, quiet
possession and freedom from encumbrance.
(d) Subject to conditions (a) and (c) from the time of despatch of the Goods from the
Company’s premises the Purchaser shall be responsible for any defect in the Goods
or loss, damage, nuisance or interference whatsoever consequential economic or
otherwise or wastage of material resulting from or caused by or to the Goods. In
particular the Company shall not be liable for any loss of prots or other economic
losses. The Company accordingly excludes all liability for the same.
(e) At the request and expense of the Purchaser the Company will test the Goods to
ascertain performance levels and provide a report of the results of that test. The report
will be accurate at the time of the test, to the best of the belief and knowledge of the
Company, and the Company accepts no liability in respect of its accuracy beyond that
set out in Condition (a).
(f) Subject to Condition (e) no representation, condition, warranty or other term, express
or implied (by statute or otherwise) is given by the Company that the Goods are of
any particular quality or standard or will enable the Purchaser to attain any particular
performance or result, or will be suitable for any particular purpose or use under
specic conditions or will provide any particular capacity, notwithstanding that the
requirement for such performance, result or capacity or that such particular purpose
or conditions may have been known (or ought to have been known) to the Company,
its employees or agents.
(g) (i) To the extent that the Company is held legally liable to the Purchaser for any
single breach of contract, tort, representation or other act or default, the
Company’s liability for the same shall not exceed the Price of the Goods.
(ii) The restriction of liability in Condition (g)(i) shall not apply to any liability
accepted by the Seller in Condition (c).
(h) Where the Goods are sold under a consumer transaction (as dened by the Consumer
Transactions (Restrictions on Statements) Order 1976) the statutory rights of the
Purchaser are not aected by these Conditions of Sale.

S0 User Handbook iii
WARRANTY & SAFETY
INFORMATION
WARRANTY & SAFETY INFORMATION
Returning the Warranty Card
In order to register the date of purchase so that we can keep you informed of any design
improvements or modications, it is important to complete the warranty registration
document that is enclosed and return it to Sonifex Ltd in the UK, or register online at
www.sonifex.co.uk/register
For your own records you should write down the serial number of the S0 Mixer.
S0 Mixer Serial Number
Unpacking the S0
Each product is shipped in protective packaging and should be inspected for damage.
before use. Where an item is found to have transit damage, notify your supplier immediately
with all the relevant details of the shipment. Packing materials should be kept for inspection
and also for if the product needs to be returned.

iv S0 User Handbook
WARRANTY & SAFETY INFORMATION
WARRANTY & SAFETY
INFORMATION
Safety of Mains Operated Equipment
This equipment has been designed to meet the safety regulations currently advised
in the country of purchase and it conforms to the safety regulations specied by
use of the CE Mark.
The power supply is rated to 95 - 265VAC at 47 – 63Hz with a fuse of 2A.
Warning: There are no user serviceably parts inside the machine. If you should ever
need to look inside the unit, always disconnect the mains supply before removing the
equipment covers.
Fuse Rating
The product is supplied with a single fuse in the live conducting path of the power-in feed
at the power supply. For reasons of safety it is important that the correct rating and type of
fuse is used. Incorrectly rated fuses could present a possible re hazard, under equipment
fault conditions.
Power Cable and Connection
An IEC power connector is supplied with the product, which has a moulded plug attached –
this is a legal requirement. If no moulded plug has been supplied with your product, please
contact your supplier, because an IEC connector is always supplied from the Sonifex factory.
If for any reason, you need to use the product with a dierent power cable, you should use
the following wiring guidelines
Wire Colour Connection
Green, or green and yellow Earth (E)
Blue, or Black Neutral (N)
Brown, or Red Live (L)

S0 User Handbook v
WARRANTY & SAFETY INFORMATION
WARRANTY & SAFETY
INFORMATION
WEEE & RoHS Directives - Sonifex Statement
The Waste Electrical and Electronic Equipment (WEEE) Directive was agreed on
13 February 2003, along with the related Directive 2002/95/EC on Restrictions
of the use of certain Hazardous Substances in electrical and electronic
equipment (RoHS).
The Waste Electrical and Electronic Equipment Directive (WEEE) aims to minimise the
impacts of electrical and electronic equipment on the environment during their life times
and when they become waste. It applies to a huge spectrum of products. It encourages
and sets criteria for the collection, treatment, recycling and recovery of waste electrical and
electronic equipment. All products manufactured by Sonifex Ltd have the WEEE directive
label placed on the case. It gives a contact for individuals who are unsure about the correct
procedure when the product has reached its “end of use”.
Sonifex Ltd will be happy to give you information about local organisations that can
reprocess the products, or alternatively all products that have reached “end of use” can be
returned to Sonifex and will be reprocessed correctly free of charge.
Sonifex Ltd has phased out the use of certain hazardous substances identied in the
European Union’s Restriction of Hazardous Substances (RoHS) directive. The RoHS directive
limits the use of certain hazardous substances currently used in EEE manufacture, including
lead, mercury, cadmium, hexavalent chromium, and halide-containing compounds PBB
(polybrominated biphenyl) and PBDE (polybrominated diphenyl ether). Elimination of these
substances will result in more environmentally friendly recycling of electronic equipment.
For the products which Sonifex manufacture, the main area where products were aected
was in the use of lead for manufacturing and assembling electronics circuit boards.
Sonifex Ltd practices lead-free (LF) manufacturing processes. LF solder is used on the
surface-mount PCB manufacturing processes and for hand soldering. The printed circuit
boards (PCBs) used are either gold plated, or immersion tin plated, both of which use no
lead. Historically the PCBs were hot air solder levelled (HASL) PCBs which used tin/lead
based solder.
The manufacturing processes include the assembly of purchased components from various
sources. Product is oered as RoHS compliant, or LF, only after sucient evidence is received
from the component manufacturers that their components are RoHS compliant. Sonifex
Ltd relies solely on the distributor, or manufacturer, of the components for identication of
RoHS compliance. Thus whilst every eort is made to ensure compliance, Sonifex Ltd makes
no warranty, or certication, or declaration of compliance concerning said components.
Sonifex Ltd denes“Lead Free” as pertaining to any product, which has been manufactured
by Sonifex Ltd using components which have been declared by the manufacturers as
“Lead Free”. All statements by Sonifex Ltd of RoHS compliance are based on component
manufacturer documentation.

vi S0 User Handbook
Reporting Faults
Although this Sonifex product is manufactured to the highest standards, it is possible that
minor faults may appear in the equipment over its normal lifetime. If you nd any problems
with the product, please contact your Sonifex distributor, or contact Sonifex directly at the
following address, or fax with a copy of this completed sheet :
To : From:
Sonifex Ltd, Name
61, Station Road, Position
Irthlingborough, Company
Northants. Address
NN9 5QE, UK
Tel : [phone] Tel
Fax : [phone] Fax
Email : [email protected].uk Email
For the Serial No. of your machine, see the
back panel of the unit.
Serial No.
Please describe the error in as much detail as possible (for example what you were doing
when the problem occurred, what actually happened, etc)
Description of Error
Also, if you have any suggestions for additions or upgrades to the unit , we would like to
hear what they are :
Additions that I Would Like to See
REPORTING A FAULT
REPORTING A FAULT

S0 User Handbook 1
INTRODUCTION
INTRODUCTION 1
Introduction
The S0 is a high quality yet simple to operate radio broadcast mixer ideally suited to
community radio stations, for educational purposes and for internet radio. It is easy to use
and provides the ideal solution for those who do not require the advanced functionality of a
more complex unit.
Easy to understand, the S0 includes a telephone hybrid for making and recording telephone
calls and a 3.5mm stereo jack for plugging in an mp3 player. The addition of a USB port
allows for recording to a PC and for playing a PC automation system directly through the
mixer. The headphone outputs have a built in limiter to oer hearing protection and the
studio speakers mute when a microphone fader is open, with automatic mic live sign
switching.
Using many of the same components found on the S2 and S1 mixers, the S0 oers quality
and reliability in a cost eective package. It also allows presenters and DJs to be up and
running quickly with a fully featured radio studio mixer.
Fig 1-1: S0 Mixer - Top View.

2S0 User Handbook
INTRODUCTION
INTRODUCTION
1
Feature Summary & Overview of Use
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mechanical and electronic noise.
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Features
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routed to Pre-Fade Listen.
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The Sonifex S0 mixer is a compact, low cost, xed format broadcast mixing console
designed for on-air radio use. It uses the same high quality circuitry and components as the
Sonifex S2 and S1 mixers to provide an audio experience second to none. The S0 can be
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holes.

S0 User Handbook 3
INTRODUCTION
INTRODUCTION 1
The uncomplicated and intuitive front panel layout ensures that the unit appeals to novices
and broadcast professionals alike, whilst a range of user congurable options allows for
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The console consists of nine input channels:
t 4 x mono balanced XLR mic/stereo unbalanced RCA phono line inputs.
t 4 x dual stereo unbalanced RCA phono line inputs.
t 1 x telephone balance unit (with line and handset ports)/stereo unbalanced RCA phono
auxiliary input with a parallel 3.5mm stereo jack input on the front panel.
Providing in total 4 mic, 12 stereo line, 1 TBU & 1 stereo auxiliary inputs which you can
switch between.
Input Channels
Input source buttons at the top of each channel strip are used to select the required mono
or stereo source. The mixer has two main stereo buses, PGM (Program) and REC (Record), so
each channel also has PGM and REC buttons to independently select which mixer bus the
selected input is routed to.
The XLR microphone inputs on channels 1 to 4 have individually selectable +48V phantom
power and a gain calibration potentiometer providing up to 65dB of gain for the pre-amp.
Input channel 1 also serves as the microphone input for a dedicated talkback channel.
The stereo RCA phono line inputs on channels 1 to 8 have 10dB of gain at the input to
compensate for unbalanced consumer inputs.
Input channel 9 is a TBU and stereo auxiliary input channel. The TBU allows direct
connection to a telephone line and allows calls to be made and received through the mixer
using the handset connection. The auxiliary channel can switch between 2 independent
inputs, one on the rear panel and one on the front panel.
Any channel which has the fader up is routed to the selected output, either PGM or REC or
both.
Gain for each channel is trimmed by the front panel TRIM control providing ±15dB of gain. A
PAN/BAL(ance) control is available to facilitate stereo imaging.
The use of VCAs controlled by the ALPS long throw 100mm faders gives a smooth,
repeatable response and ensures tight stereo tracking while eliminating mechanical and
electronic noise.
USB Audio for Playback & Recording
The S0 has the option to send and receive audio over USB. This allows the audio on the REC
bus to be sent to a PC for recording or monitoring purposes. Also, the S0 can receive a USB
audio stream from a PC and route it to the auxiliary inputs on channel 8. Alternatively, this
signal can be routed to channels 5, 6 or 7 if required.

4S0 User Handbook
INTRODUCTION
INTRODUCTION
1
Output Channels
The S0 has separate stereo PGM and REC bus outputs. The PGM bus is output on balanced
stereo XLRs and the REC bus is output on unbalanced stereo RCA phono connectors. There
are monitor outputs for presenter headphones, guest headphones and loudspeakers.
Monitoring & Headphone Limiter
The monitor loudspeakers, presenter headphones and guest headphones are on 6.35mm
stereo jack sockets and the headphones can be plugged in to the front and rear of the mixer.
The monitor loudspeaker and headphone levels are independently variable between 0 (cut
o) and 10 (max).
With the concerns over listening levels being too high in headphones, the addition of an
adjustable limit level potentiometer on the rear panel of the mixer is a great idea which
limits the maximum level of the audio routed to the presenter and guest headphone
outputs. An illuminated MUTE LED shows when a live microphone channel has muted the
loudspeakers and there is a MUTE contact output available to illuminate a ‘MIC LIVE’ light via
a 6.35mm stereo jack socket on the rear panel.
A three way electronically interlocking illuminated switch bank selects the source routed
to the loudspeaker and headphone outputs from either PGM, REC or from an additional
unbalanced stereo RCA phono input EXT 1. This external input can be used for monitoring
an o air signal or studio output.
Green illuminated AUTO CUE/PFL (pre fade listen) buttons adjacent to each level control
allow the automatic monitoring of any channel that has been selected to pre-fade, either to
the monitors or headphones.
For the presenter headphones, SPLIT CUE/PFL can be selected which places the selected
source in mono in the left ear, and pre-fade in mono in the right ear.
Metering
A pair of bright 21 segment LED meters can be congured to show either VU or PPM
metering. The meters follow the selection of the presenter headphones including any pre-
fade or split pre-fade function.
Talkback
A separate TALKBACK button is provided to allow the presenter to talk to a guest on the
guest headphones. The S0 uses input channel 1 as the talkback source.
Channel Remotes
The remote outputs for each channel are highly congurable providing a comprehensive
range of options to interface external equipment to the mixer. Each channel input has its
own START and STOP remote controls which can be triggered when the channel is routed
to the PGM or REC bus and the fader is opened or closed. The remotes can be set-up to be
either pulsed or continuous latched outputs, and if in pulsed mode the START button has
the capability to produce repeated start pulses.

S0 User Handbook 5
INTRODUCTION
INTRODUCTION 1
Conguration Settings
The S0 has a range of software congurable options which can be used to customize the
operation of the mixer. It is possible to enable or disable specic inputs, enable phantom
power for the microphone channels and limit which buses each channel can be routed to.
Other settings control auto cancelling of PRE FADE when the channel fader is opened and all
the remote output congurations.
The S0 has an integral universal switch mode power supply, which uses an IEC mains inlet.
Installation Notes
Atmosphere
The S0 mixer should be installed in an area which is not subject to excessive heat or cold.
Also, you should avoid installing it in atmospheric conditions which are dusty, smoky or
dirty, or where there is moisture or vibration. Do not use any liquids to clean the fascia of the
mixer: a soft dry brush is ideal. Use a clean cloth moistened with water or ethyl alcohol to
clean the trim. Other solvents may cause damage to paint or plastic parts.
Electromagnetic Radiation
Avoid using the S0 mixer close to strong sources of electromagnetic radiation such as, video
monitors or high power electric cabling. This may cause degradation of the audio quality
due to induced voltages in connecting leads and chassis. In all cases the S0 mixer should be
installed and serviced by qualied personnel.
Dimensions and Cut-Out Size for Flush Mounting
External dimensions: 483mm (W) x 356mm (D) x 125mm (H)
The cut-out size is for reference only and should be checked with your mixer.
Fig 1-2: S0 Mixer - Cut-out Sizes.
345mm
440mm

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User Guide
Many of the options and default settings described in this section can be modied. Full
details of all the conguration options and their default settings can be found in the
Conguration Options section on page 20.
S0 Input Channels
The S0 has 9 xed format channels with up to 3 selectable inputs on each channel.
Channels 1-4: Mono Balanced XLR Microphone / Stereo Unbalanced RCA Line inputs
Channels 5-8: Dual Stereo Unbalanced RCA Line / USB Audio inputs
Channel 9: Telephone Interface / Stereo Unbalanced RCA Auxiliary (Rear) / Stereo
Unbalanced Jack Auxiliary (Front) inputs
Channels 1-4 Mono Balanced Mic/Stereo Unbalanced Line inputs
MIC INPUT
This mono balanced XLR is the microphone input to the channel. The S0
supports both dynamic (unpowered) and condenser (powered using 48V
DC phantom power) microphones. By default, only channel 1 is congured
to supply phantom power. The phantom power settings are part of the
Conguration Options.
MIC TRIM
This small multi turn screw adjuster sets the amplication level for the
microphone input, which is applied prior to the channels TRIM control. The
available gain range is from +24dB to +65dB (ref -50dBu input) and allows
a wide range of microphone types to be used.
LINE INPUT
This stereo unbalanced RCA (phono) is the line input to the channel. It has
10dB of gain at the input and is designed to connect directly to consumer
level equipment such as CD players and other hi- equipment.
REMOTE OUTPUT
This 6.35mm (¼”) stereo jack socket is the remote output for the channel. It
can be used to control external equipment such as turning on a“Mic Live”
indication, or starting a CD player. There are 2 separate signals, remote start
and remote stop, which are both open collector outputs. These signals
can be congured to act dierently depending on the input selected. The
remote output settings are part of the Conguration Options.
MIC / LINE Button
Pressing this button changes the channel input selection between MIC and
LINE. The button illuminates red to indicate that the LINE input is selected.
When the channel’s fader is open, the input selection cannot be changed.
When the MIC input is selected, these channels can be congured to
supply 48V to microphones requiring Phantom Power.
Fig 2-2:
Channel 1 MIC/
LINE Button.
Fig 2-1: Channel
1 Rear Panel
Connectors.

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This button can be disabled so that the selected input cannot be
changed. The button operation and phantom power settings are part
of the Conguration Options.
PGM Button
This button allows the output of the channel to be mixed onto the
Program Bus output. The button illuminates green to indicate the
channel is active on the Program Bus. This button can be disabled via
the Conguration Options, so that it is permanently on or o.
REC Button
This button allows the output of the channel to be mixed onto the
Record bus output. The button illuminates red to indicate the channel
is active on the Record Bus. This button can be disabled via the
Conguration Options, so that it is permanently on or o.
TRIM Control
This control allows the level of the audio on this channel to be
adjusted by ±15dB. This additional gain is applied prior to the channels
fader, and is useful for setting relative levels between audio sources on
dierent channels.
Note: It is a good idea to set up all the audio channels so that they are
all at the same reference level when the fader is fully up, meaning the
mix levels are determined solely by the position of the faders.
PAN/BAL Control
This control has two functions depending on whether MIC or LINE is
selected.
In MIC mode the control acts as PAN and allows the mono input to be positioned in the
stereo image. With the control in the centre position, the signal is present on both the left
and right channels. Turning the control fully anti-clockwise pans the signal to the left by
increasing the level by 3dB and the signal on the right channel is turned o. Turning the
control fully clockwise pans the signal to the right by increasing the level by 3dB. The signal
on the left channel is turned o.
In LINE mode the control acts as BAL (balance) and is used to alter the stereo image of the
stereo input. With the control in the centre position, the signal is un-altered. Turning the
control fully anti-clockwise shifts the signal to the left by increasing the gain by 6dB and
the signal on the right channel is reduced by 6dB. Turning the control fully clockwise shifts
the signal to the right by increasing the gain by 6dB while the signal on the left channel is
reduced by 6dB.
CUE PFL Button
Selecting CUE PFL routes the pre-fader input signal to the monitoring section where the
signal can be heard on the Monitor, Presenter or Guest headphones (provided that the
associated AUTO CUE/PFL button is selected). The level can then be checked on the meters
Fig 2-3: Mic/Line
Channel Strip.

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and adjusted via the TRIM control, and the pan or balance can be set
with the PAN/BAL control. Provided that the fader is closed, the signal
will not be routed to the PGM or REC outputs even if they are selected.
This button is illuminated green to indicate CUE PFL is active and it
has a momentary and latched action: if the button is held down, CUE
PFL is cancelled when released. There is a Conguration Option to
automatically cancel CUE PFL when the fader is opened. This option is
enabled by default.
FADER Control
The 100mm VCA fader is a linear level control that operates between fully
attenuated in its lowest position to unity gain when fully open.
START Button
This button has a dierent function depending on whether MIC or LINE
is selected. When in MIC mode, the button is an indicator and shows the
state of the channel and the remote output as follows:
O The channel is not routed to either the PGM or
REC bus.
Illuminated Red The channel is routed to the PGM or REC bus,
the fader is closed and the remote stop output
is enabled.
Illuminated Green The channel is routed to the PGM or REC bus,
the fader is open and the remote start output
is enabled.
This is the default operation when in MIC mode, but this can be changed
in the Conguration Options.
When in LINE mode, the button indicates the state of the channel, and
also controls the operation of the remote outputs as follows:
O The remote outputs are disabled. Pressing the button will enable/
disable the remote outputs, but they can only be disabled when the
fader is closed.
Flashing Red The remote outputs are enabled, but the channel is not currently
routed to the PGM or REC bus so the remote start and stop outputs
are inactive.
Illuminated Red The remote outputs are enabled, the channel is routed to the PGM
or REC bus and the fader is closed. If the fader is opened, the remote
start output will become active and give a momentary pulse for
0.5 seconds.
Illuminated Green The remote outputs are enabled, the channel is routed to the PGM
or REC bus and the fader is open. If the button is pressed, the remote
Fig 2-4: Channel 1
FADER Control &
START Button.