AUSTRALIAN MONITOR Synergy SY400 User manual

SY 400
SY 800
SY 1200
SY 1600
Operation Manual
Professional Audio Amplifier

Australian Monitor
The rear panel of the unit has a number of markings
and internationally recognized symbols related to
the hazards and precautions that should be taken
whenoperatingMAINSconnectedequipment.
The presence of a LIGHTNING FLASH with an
arrowhead contained within the boundaries of an
equilateral triangle is intended to alert the user that
dangerousuninsulatedvoltagesmayexistwithinthe
unit's enclosure. These voltages may be of a
sufficient magnitude as to constitute the risk of an
electricalshock.
Thissymbolisreinforcedwiththetext:
The presence of an EXCLAMATION MARK
contained within the boundaries of an equilateral
triangle is intended to alert the user that there is
important operating and maintenance literature that
accompaniestheunit.
The unit should not be operated in a situation where
it may encounter the entry of water, rain, or any
fluids. To expose the unit to the above conditions
may make the operation of the unit hazardous and
increasetheriskofelectricalshock.
Features:
>Custom designed, 2RU heavy duty steel
chassis.
>Open modular construction for ease of servicing.
>Symmetrical layout - even weight distribution.
>Well-regulating, high current power supply.
>High efficiency toroidal mains transformer.
>Binding post and 4 pole speaker output
connection.
>Stereo or bridged / mono operation.
>Input signal strapping (loop through) connectors.
>Balanced inputs and buffered attenuators.
>1 Watt output indication (2.828 volts).
>1 dB below output clip indication.
>Efficient front to back cooling.
>Dual, twin speed axial fans.
>Multi-role output fault indication.
>Front carry handles. Rear rack mount ears.
>Plug in signal modifiers (optional).
>Signal ground lift switch.
>Built in limiter circuit.
>High-quality, close-tolerance components
throughout.
IMPORTANT!
Please read carefully.
This operation manual contains important information
regarding safety precautions, installation, performance,
operation and maintenance of your Synergy-Series power
amplifier. You should familiarize yourself with the contents
ofthismanualbeforeoperatingyouramplifier.
Safety Precautions
and Labelling
!CAUTION!
RISK OF ELECTRICAL SHOCK
DO NOT OPEN
!WARNING!
DO NOT EXPOSE TO EITHER
RAIN OR MOISTURE
REFER SERVICING TO
QUALIFIED PERSONNEL.
NO USER SERVICEABLE
PARTS INSIDE.
The user should not attempt to service the unit. Only
qualified and knowledgeable personnel familiar with
the internal workings of the unit should attempt any
repair, servicing or authorized modification to the
unit. The unit does not contain any parts which the
user can service or re-use in this or any other
product.
If you are in need of special assistance and the
information you require is outside the scope of this
manual, please contact your nearest service agent
orAustralianMonitordirect:
THE TECHNICAL OFFICER
AUSTRALIAN MONITOR
C/- AUDIO TELEX COMMUNICATIONS PTY LTD
PRIVATE BAG 149,
SILVERWATER. N.S.W. 1811
AUSTRALIA.
Phone Fax
Local [phone] (02)9748-2537
International 61-2-9647-1411 61-2-9748-2537
Email [email protected]
Internet www.australianmonitor.com.au
Protection Features
>Suppression of inrush current at mains turn-on.
>Input muting at turn-on.
>Input overvoltage protection.
>Radio-frequency interference suppression.
>Short-circuit protection and indication.
>Highoverloadmainsfuse.
>Internal,independentDCsupplyrailfuses.
>Layout, grounding, decoupling and componentry
have been optimized to provide the user with
stability,reliabilityandlongevity.

Australian Monitor
The rear panel of the unit has a number of markings
and internationally recognized symbols related to
the hazards and precautions that should be taken
whenoperatingMAINSconnectedequipment.
The presence of a LIGHTNING FLASH with an
arrowhead contained within the boundaries of an
equilateral triangle is intended to alert the user that
dangerousuninsulatedvoltagesmayexistwithinthe
unit's enclosure. These voltages may be of a
sufficient magnitude as to constitute the risk of an
electricalshock.
Thissymbolisreinforcedwiththetext:
The presence of an EXCLAMATION MARK
contained within the boundaries of an equilateral
triangle is intended to alert the user that there is
important operating and maintenance literature that
accompaniestheunit.
The unit should not be operated in a situation where
it may encounter the entry of water, rain, or any
fluids. To expose the unit to the above conditions
may make the operation of the unit hazardous and
increasetheriskofelectricalshock.
Features:
>Custom designed, 2RU heavy duty steel
chassis.
>Open modular construction for ease of servicing.
>Symmetrical layout - even weight distribution.
>Well-regulating, high current power supply.
>High efficiency toroidal mains transformer.
>Binding post and 4 pole speaker output
connection.
>Stereo or bridged / mono operation.
>Input signal strapping (loop through) connectors.
>Balanced inputs and buffered attenuators.
>1 Watt output indication (2.828 volts).
>1 dB below output clip indication.
>Efficient front to back cooling.
>Dual, twin speed axial fans.
>Multi-role output fault indication.
>Front carry handles. Rear rack mount ears.
>Plug in signal modifiers (optional).
>Signal ground lift switch.
>Built in limiter circuit.
>High-quality, close-tolerance components
throughout.
IMPORTANT!
Please read carefully.
This operation manual contains important information
regarding safety precautions, installation, performance,
operation and maintenance of your Synergy-Series power
amplifier. You should familiarize yourself with the contents
ofthismanualbeforeoperatingyouramplifier.
Safety Precautions
and Labelling
!CAUTION!
RISK OF ELECTRICAL SHOCK
DO NOT OPEN
!WARNING!
DO NOT EXPOSE TO EITHER
RAIN OR MOISTURE
REFER SERVICING TO
QUALIFIED PERSONNEL.
NO USER SERVICEABLE
PARTS INSIDE.
The user should not attempt to service the unit. Only
qualified and knowledgeable personnel familiar with
the internal workings of the unit should attempt any
repair, servicing or authorized modification to the
unit. The unit does not contain any parts which the
user can service or re-use in this or any other
product.
If you are in need of special assistance and the
information you require is outside the scope of this
manual, please contact your nearest service agent
orAustralianMonitordirect:
THE TECHNICAL OFFICER
AUSTRALIAN MONITOR
C/- AUDIO TELEX COMMUNICATIONS PTY LTD
PRIVATE BAG 149,
SILVERWATER. N.S.W. 1811
AUSTRALIA.
Phone Fax
Local [phone] (02)9748-2537
International 61-2-9647-1411 61-2-9748-2537
Email [email protected]
Internet www.australianmonitor.com.au
Protection Features
>Suppression of inrush current at mains turn-on.
>Input muting at turn-on.
>Input overvoltage protection.
>Radio-frequency interference suppression.
>Short-circuit protection and indication.
>Highoverloadmainsfuse.
>Internal,independentDCsupplyrailfuses.
>Layout, grounding, decoupling and componentry
have been optimized to provide the user with
stability,reliabilityandlongevity.

Australian Monitor
Contents Page
1. Introduction 5
2. Controls,ConnectorsandIndicators 6
2.1FrontPanel 7
2.2RearPanel 9
3. Installation 10
4. Operation 12
5. Maintenance 14
6. Warranty 15
7. Specification 16
List of Illustrations Page
Figure1.BlockDiagram 5
Figure2.FrontPanelLayout 6
Figure3.RearPanelLayout 8
Figure4.SpeakerConnectorWiring 11
1. Introduction
Congratulations on choosing Australian Monitor for
yourprofessionalamplificationrequirements.
The design of your Synergy-Series Audio Power
Amplifiersembracealltheaspectsofawelldesigned
unit. The visual design, mechanical, electrical and
sonic parameters, along with our dedicated
manufacturing process, have all been optimized to
provide a professional tool that exhibits quality,
reliabilityandlongevity.
The Synergy-Series amplifiers are 2 unit (3.5") tall, 19"
widerackmountableunits.
Each channel of the amplifier comprises a balanced
active input with a buffered attenuator driving a
differential class Adrive stage which in turn drives a
fan-cooled,classAB,BJToutputstageconfiguredas
an emmiter follower. The unit operates from a high
current-capablelinearpowersupply.
These units have been specifically designed to
deliver their high power output with minimal
distortion, and provide the critical degree of control
required by your speakers, at high duty cycles for
extendedperiods.
Figure 1 Amplifier Block Diagram
Introduction 5

Australian Monitor
Contents Page
1. Introduction 5
2. Controls,ConnectorsandIndicators 6
2.1FrontPanel 7
2.2RearPanel 9
3. Installation 10
4. Operation 12
5. Maintenance 14
6. Warranty 15
7. Specification 16
List of Illustrations Page
Figure1.BlockDiagram 5
Figure2.FrontPanelLayout 6
Figure3.RearPanelLayout 8
Figure4.SpeakerConnectorWiring 11
1. Introduction
Congratulations on choosing Australian Monitor for
yourprofessionalamplificationrequirements.
The design of your Synergy-Series Audio Power
Amplifiersembracealltheaspectsofawelldesigned
unit. The visual design, mechanical, electrical and
sonic parameters, along with our dedicated
manufacturing process, have all been optimized to
provide a professional tool that exhibits quality,
reliabilityandlongevity.
The Synergy-Series amplifiers are 2 unit (3.5") tall, 19"
widerackmountableunits.
Each channel of the amplifier comprises a balanced
active input with a buffered attenuator driving a
differential class Adrive stage which in turn drives a
fan-cooled,classAB,BJToutputstageconfiguredas
an emmiter follower. The unit operates from a high
current-capablelinearpowersupply.
These units have been specifically designed to
deliver their high power output with minimal
distortion, and provide the critical degree of control
required by your speakers, at high duty cycles for
extendedperiods.
Figure 1 Amplifier Block Diagram
Introduction 5

Australian Monitor
Front Panel
The Synergy Series models have identical front panel
layouts.
Figure 1 shows the panel layout of the Synergy Series.
The functions of the controls and indicators are as
follows:
1 Attenuator
Level control for your amplifier is provided by a
potentiometer on the front panel and indicates
gain.
2 Status Indicator
Thisisa dual color LED which displaysthestatus
of the output stage and displays three levels of
operation.
Theselevelsare:
Below1watt (unlit)
1wattandabove (green)
1dBbelowactualclipping (red)
The LED will turn green once the output voltage
exceeds 2.828 volts (1 watt re 8 ohms or 2 watts
re4ohms).
The LED will change to red once the output
exceeds the -1dB point before actual clipping of
theamplifier’soutputstage.Thethresholdofthe-
1dB point is referred to the amplifier supply rails
and alters with changes in the mains supply,
changesintheloadanddutycyclefluctuations.
The attack and decay time (ballistics), of the
status circuit are those of a Peak Programme
Meter(P.P.M.)
Ifusing this indicator to line up sensitivities, apply
a steady state tone (e.g. slate on a mixing
console). The 1 watt level is the mid-point
between the indicator illuminating and
extinguishinggreen.
NOTE: The amplifier is not damaged by running
into clipping, but speakers may be. To maximise
the life of your speakers, try to keep clipping
infrequent.
3 Overload Indicator
Thisamber LED will illuminate when anoverload
conditionexists.
Overload conditions can occur under extreme
operatingconditionssuchas:
-complexorverylowloads
-overdrivingtheamplifier
It should be noted that the minimum load for the
amplifieris4ohmsperchannel(8ohmbridged).
If an overload occurs the amplifier will shut down
and mute both outputs. If the overload is only
transitory then the amplifier will resume normal
operationafterapproximately7secs.Ifthefaultis
continuousthentheamplifierwillremainmuted.
4 PowerSwitch
Presstheswitchto upforpoweron(I)anddown
forpower off (0).Atstart-up(turn-on)theinputto
the amplifier is muted for approximately two
seconds.
5 ThermalIndicator
In the advent of a thermal overload this LED will
turn red indicating that the internal operating
temperature of one or both amplifier channels
has exceeded a safe level of operation and the
channels will be automatically muted. The fans
will continue to run and once the effected
channel/s have had a cool-down period, they will
un-muteandreturntonormaloperation.
NOTE: You should always ensure that the fan
grille is kept clean and free from the build up of
dust and lint. This will ensure longer operation of
your amplifier and reduce the possibility of it
prematurely going into thermal shutdown mode.
See the section “Installation - Cooling “ on page
10forrecommendedcoolingprocedures.
6 On Indicator
This LED will illuminate blue and indicates that
theamplifierisonandreceivingmainspower.
7 Fault Indicator
This red LED indicates a significant problem with
theamplifier and the amplifier should be returned
toanauthorisedtechnicianforservicing.
Controls & Connectors 7
2.Controls,
Connectors
&Indicators
Figure 2 Front Panel Layout
6 Controls & Connectors

Australian Monitor
Front Panel
The Synergy Series models have identical front panel
layouts.
Figure 1 shows the panel layout of the Synergy Series.
The functions of the controls and indicators are as
follows:
1 Attenuator
Level control for your amplifier is provided by a
potentiometer on the front panel and indicates
gain.
2 Status Indicator
Thisisa dual color LED which displaysthestatus
of the output stage and displays three levels of
operation.
Theselevelsare:
Below1watt (unlit)
1wattandabove (green)
1dBbelowactualclipping (red)
The LED will turn green once the output voltage
exceeds 2.828 volts (1 watt re 8 ohms or 2 watts
re4ohms).
The LED will change to red once the output
exceeds the -1dB point before actual clipping of
theamplifier’soutputstage.Thethresholdofthe-
1dB point is referred to the amplifier supply rails
and alters with changes in the mains supply,
changesintheloadanddutycyclefluctuations.
The attack and decay time (ballistics), of the
status circuit are those of a Peak Programme
Meter(P.P.M.)
Ifusing this indicator to line up sensitivities, apply
a steady state tone (e.g. slate on a mixing
console). The 1 watt level is the mid-point
between the indicator illuminating and
extinguishinggreen.
NOTE: The amplifier is not damaged by running
into clipping, but speakers may be. To maximise
the life of your speakers, try to keep clipping
infrequent.
3 Overload Indicator
Thisamber LED will illuminate when anoverload
conditionexists.
Overload conditions can occur under extreme
operatingconditionssuchas:
-complexorverylowloads
-overdrivingtheamplifier
It should be noted that the minimum load for the
amplifieris4ohmsperchannel(8ohmbridged).
If an overload occurs the amplifier will shut down
and mute both outputs. If the overload is only
transitory then the amplifier will resume normal
operationafterapproximately7secs.Ifthefaultis
continuousthentheamplifierwillremainmuted.
4 PowerSwitch
Presstheswitchto upforpoweron(I)anddown
forpower off (0).Atstart-up(turn-on)theinputto
the amplifier is muted for approximately two
seconds.
5 ThermalIndicator
In the advent of a thermal overload this LED will
turn red indicating that the internal operating
temperature of one or both amplifier channels
has exceeded a safe level of operation and the
channels will be automatically muted. The fans
will continue to run and once the effected
channel/s have had a cool-down period, they will
un-muteandreturntonormaloperation.
NOTE: You should always ensure that the fan
grille is kept clean and free from the build up of
dust and lint. This will ensure longer operation of
your amplifier and reduce the possibility of it
prematurely going into thermal shutdown mode.
See the section “Installation - Cooling “ on page
10forrecommendedcoolingprocedures.
6 On Indicator
This LED will illuminate blue and indicates that
theamplifierisonandreceivingmainspower.
7 Fault Indicator
This red LED indicates a significant problem with
theamplifier and the amplifier should be returned
toanauthorisedtechnicianforservicing.
Controls & Connectors 7
2.Controls,
Connectors
&Indicators
Figure 2 Front Panel Layout
6 Controls & Connectors

Australian Monitor
Rear Panel
8 Balanced Input
Afemale 3-pinXLRtypeconnectoris providedon
eachinput:
Pin1=SignalGround;
Pin2=Hot(non-invertingorinphase);
Pin3=Cold(invertingorreversephase).
8a Signal Strapping
A male 3-pin XLR type connector is provided and
wired in parallel with the female input XLR for
strapping/loopingsignalbetweenamplifiers.
9 Signal Ground Lift Switch
Whenthisswitchisengageditdisconnectssignal
ground from the input connectors on both
channels. It is intended to be used when “hum” is
caused by earth loops (due to different ground
potentials between source equipment and the
amplifier) or stray magnetic field pick up on the
input ground/shield wiring. (It does not interrupt
signal ground continuity on the strapping
connector). The amplifier should be turned off
beforeengagingthisswitch!
10 Binding Post Outputs
Touch proof binding posts (banana jacks) are
provided for speaker output termination with
banana plugs or bare wire. The red post is used
as positive and the black post is used as
negative. For bridge connection use only the red
posts.
10a Speaker Output Connector
The 4 pole speaker connector is provided as an
additional speaker output. This emerging
standard of loudspeaker to amplifier connection
allows access to both channels of the amplifier
via the one connector for bi-amp applications.
Channel-A is considered the dominant channel
and has both channels wired to the speaker
connector. See the installation section of this
manual for detailed information on speaker
connector wiring.
11 Mains Connection
Your amplifier is fitted with either an
internationally recognised IEC mains inlet
connector (SY400, SY800, SY1200) or has a
internallyconnectedmainslead(SY1600).
Please ensure that the connecting mains lead for
usewiththeIEC connectorisofanapprovedtype
andisofsufficientcurrentcarryingability.
NOTE:Yourunitmustalwaysbeearthed!
12 Mains Fuse or Circuit Breaker
Either a 20mm x 5mm fuse drawer is provided
within the housing of the IEC mains connector
(SY400, SY800, SY1200) or the amplifier is fitted
witharesettablecircuitbreaker(SY1600).
Fuse:
When you recieve your amplifier it will have a
working fuse and a spare fuse inside the fuse
drawer. The drawer can only be opened once the
mains lead is removed from the connector. The
fuse is provided to protect both the mains and
your amplifier as well as reducing the degree of
damageifaninternalfaultexists.
When replacing the fuse, replace with an anti-
surge (slow blow) type of the current rating
indicated on the back panel above the fuse
holder.
Warranty does not cover a blown fuse or any
resulting damage due to an incorrect fuse rating
ortype.
Breaker:
If the circuit breaker trips allow 3 mins for the
contacts to reset thermally before pushing the
resetbuttontoresetitmechanically.
13 Bridge Switch
Pushing this switch in engages the
BRIDGED/MONO mode of operation. In this
mode your amplifier will only accept signal
appliedto channel A’s inputXLRs and the levelof
both channels will be controlled by channel A’s
attenuator. The output from channel B will
automatically be of the opposite polarity
(reversedphase)andspeakerterminationshould
be sourced from the red binding-post outputs.
Alternatively, the speaker could be connected to
poles 1+ & 2+ of the 4 pole speaker connector
(seeInstallation-OutputWiringonpage11).
14LimiterSwitch
Pushing this switch in engages the clip limiter
circuitry. The threshold level is reference to the
supply rail and the output voltage is sampled
allowingtrueclipdetectionandlimiting.
Controls & Connectors 9
Figure3 RearPanelLayout
8 Controls & Connectors

Australian Monitor
Rear Panel
8 Balanced Input
Afemale 3-pinXLRtypeconnectoris providedon
eachinput:
Pin1=SignalGround;
Pin2=Hot(non-invertingorinphase);
Pin3=Cold(invertingorreversephase).
8a Signal Strapping
A male 3-pin XLR type connector is provided and
wired in parallel with the female input XLR for
strapping/loopingsignalbetweenamplifiers.
9 Signal Ground Lift Switch
Whenthisswitchisengageditdisconnectssignal
ground from the input connectors on both
channels. It is intended to be used when “hum” is
caused by earth loops (due to different ground
potentials between source equipment and the
amplifier) or stray magnetic field pick up on the
input ground/shield wiring. (It does not interrupt
signal ground continuity on the strapping
connector). The amplifier should be turned off
beforeengagingthisswitch!
10 Binding Post Outputs
Touch proof binding posts (banana jacks) are
provided for speaker output termination with
banana plugs or bare wire. The red post is used
as positive and the black post is used as
negative. For bridge connection use only the red
posts.
10a Speaker Output Connector
The 4 pole speaker connector is provided as an
additional speaker output. This emerging
standard of loudspeaker to amplifier connection
allows access to both channels of the amplifier
via the one connector for bi-amp applications.
Channel-A is considered the dominant channel
and has both channels wired to the speaker
connector. See the installation section of this
manual for detailed information on speaker
connector wiring.
11 Mains Connection
Your amplifier is fitted with either an
internationally recognised IEC mains inlet
connector (SY400, SY800, SY1200) or has a
internallyconnectedmainslead(SY1600).
Please ensure that the connecting mains lead for
usewiththeIEC connectorisofanapprovedtype
andisofsufficientcurrentcarryingability.
NOTE:Yourunitmustalwaysbeearthed!
12 Mains Fuse or Circuit Breaker
Either a 20mm x 5mm fuse drawer is provided
within the housing of the IEC mains connector
(SY400, SY800, SY1200) or the amplifier is fitted
witharesettablecircuitbreaker(SY1600).
Fuse:
When you recieve your amplifier it will have a
working fuse and a spare fuse inside the fuse
drawer. The drawer can only be opened once the
mains lead is removed from the connector. The
fuse is provided to protect both the mains and
your amplifier as well as reducing the degree of
damageifaninternalfaultexists.
When replacing the fuse, replace with an anti-
surge (slow blow) type of the current rating
indicated on the back panel above the fuse
holder.
Warranty does not cover a blown fuse or any
resulting damage due to an incorrect fuse rating
ortype.
Breaker:
If the circuit breaker trips allow 3 mins for the
contacts to reset thermally before pushing the
resetbuttontoresetitmechanically.
13 Bridge Switch
Pushing this switch in engages the
BRIDGED/MONO mode of operation. In this
mode your amplifier will only accept signal
appliedto channel A’s input XLRs and the levelof
both channels will be controlled by channel A’s
attenuator. The output from channel B will
automatically be of the opposite polarity
(reversedphase)andspeakerterminationshould
be sourced from the red binding-post outputs.
Alternatively, the speaker could be connected to
poles 1+ & 2+ of the 4 pole speaker connector
(seeInstallation-OutputWiringonpage11).
14LimiterSwitch
Pushing this switch in engages the clip limiter
circuitry. The threshold level is reference to the
supply rail and the output voltage is sampled
allowingtrueclipdetectionandlimiting.
Controls & Connectors 9
Figure3 RearPanelLayout
8 Controls & Connectors

Australian Monitor
Installation 11
the speaker lead the greater the losses will be,
resulting in reduced power and less damping at the
load. We recommend using a heavy duty two core
2
flex(fourcoreflexifbi-amping)10to12gauge(2mm
2
to2.5mm or50/0.25orequivalent)asaminimum.
Binding Post Outputs
When terminating to the 4 mm binding post (banana
jack) output connectors, banana plugs or bare wires
can be used. The red terminal is positive and the
blackterminalisnegative(ground).
If running in BRIDGE mode, only the red binding
posts are used. Channel A provides the positive
output to the load and channel B provides the
negativeoutputtotheload.
Speaker Outputs
When using the 4 pole speaker connector for
speaker output, use only the mating 4 pole in-line
connector. This connector is designed so that both
channelscanbefedfromasingleconnector.
Two speaker connectors are provided on the
amplifier.
The "Channel A" speaker connector actually carries
both channel A & channel B outputs (see Figure 4:
SpeakerConnectorWiringDiagrams).
The "Channel B" speaker connector carries the
ChannelBoutputonly.
This arrangement allows you the option of
connecting to the outputs separately or together.
Connecting through a single connector has the
advantage of minimising connections, preserving
phasing and simplified channel allocation, which is
particularly important when bi-amping or in bridge
mode.
IMPORTANT
Do not overload your amplifier by connecting the
channelBoutputtwice!
Channel A is used as the “dominant” channel and
when sourcing a dual output from Channel A the
followingstandardshouldbeused:
ChannelA=LeftorLowFrequencies.
ChannelB=RightorHighFrequencies.
Wheninbridgemode:
Pin1+=BridgeOutputPositive
Pin2+=BridgeOutputNegative.
Figure4.Speaker ConnectorWiringDiagram
3. Installation
Power Requirements
Power consumption for your model of the Synergy
Series amplifier is indicated on the rear panel for
maximumoutput.
Ensure that your mains voltage is the same as the
rearpanelmainsvoltagemarker(+/-10%).
Mounting
Your amplifier is designed for standard 19" rack
mounting and occupies 2 EIA rack units (3.5"). The
mountingcentresare:
Vertical: 3.0"(76.2mm)
Horizontal:18.2"(461.2mm)to18.7"(473.8mm).
The slots in the mounting flange will accept bolt
diametersupto1/4"(6.35mm).
We recommend that you provide additional support
for the amplifier, especially if road use is planned, as
the weight can bend some racks otherwise. This
supportcanbeprovidedbysecureshelving,support
railsorarearrackmountingstriptomatchupwiththe
rear rack mount ears provided on your Synergy Series
amplifier.
Cooling
Eachchannelof your SynergySeriesamplifieris cooled
by an axial fan which draws cool air from the front of
theunitand expelstheheatedair fromtherearof the
unit. These units offer two speed fans which run at
half speed, switching to full speed when the internal
0 0
heatsinktemperatureexceeds60C(128 F).
An unrestricted airflow into and out from the unit
must be provided. Any restriction of the air flow will
cause heat to build up within the unit and possibly
forcetheunitintoitsthermalshutdownmode.
If the units are to be operated in an environment
where the airflow is restricted such as sealed racks,
thecoolingshouldbe supplementedbyextracooling
fans to evacuate the heated air and aid the flow of
coolairthroughtheunit.
Input Wiring
IMPORTANT
Do not directly connect pin 1 on the amplifier’s input
or strapping XLR, to the amplifier’s chassis, speaker
groundorpowerground!
NOTE
Input signal ground is not to be used as a safety
ground(earth).
The input to your amplifier is a balanced 3-pin
system and requires all three pins to be connected.
Only high quality twin-core shielded cable should be
used.
When wiring for a balanced source the connector
goingtotheinputofyouramplifiershouldbewiredas
follows:
Pin1=GROUND/SHIELD.
Pin2=HOT(InPhase-noninverting).
Pin3=COLD(ReversePhase-inverting).
When wiring from an unbalanced source you must
ensurethatpin3isconnectedtopin1(inputground),
either by linking the pins in the input connector or by
thesourceequipment'soutputwiring.
Whenwiringforanunbalancedsource:
Pin1=GROUND/SHIELD
Pin2=HOT(inphasewiththeamplifier’soutput),
Pin3=GROUND/SHIELD(joinstopin1).
NOTE:
In-line XLR connectors often have a termination lug
thatconnectsdirectlytothechassisoftheconnector.
Donotlinkthislugtopin1attheamplifier’sinputasit
will defeat the amplifier’s input grounding scheme.
Thislugisoften referredtoasa"drain”andisusedto
provide a termination to the chassis for shielding
purposes when a floating signal ground is required
between the source and destination, or when
disconnecting the signal ground is required to
reduce earth loop noise, or noise induced into signal
groundsfromstraymagneticfields.
Output Wiring
Whenwiring toyourspeakersalwaysusethelargest
gauge wire your connector will accept. The longer
10 Installation

Australian Monitor
Installation 11
the speaker lead the greater the losses will be,
resulting in reduced power and less damping at the
load. We recommend using a heavy duty two core
2
flex(fourcoreflexifbi-amping)10to12gauge(2mm
2
to2.5mm or50/0.25orequivalent)asaminimum.
Binding Post Outputs
When terminating to the 4 mm binding post (banana
jack) output connectors, banana plugs or bare wires
can be used. The red terminal is positive and the
blackterminalisnegative(ground).
If running in BRIDGE mode, only the red binding
posts are used. Channel A provides the positive
output to the load and channel B provides the
negativeoutputtotheload.
Speaker Outputs
When using the 4 pole speaker connector for
speaker output, use only the mating 4 pole in-line
connector. This connector is designed so that both
channelscanbefedfromasingleconnector.
Two speaker connectors are provided on the
amplifier.
The "Channel A" speaker connector actually carries
both channel A & channel B outputs (see Figure 4:
SpeakerConnectorWiringDiagrams).
The "Channel B" speaker connector carries the
ChannelBoutputonly.
This arrangement allows you the option of
connecting to the outputs separately or together.
Connecting through a single connector has the
advantage of minimising connections, preserving
phasing and simplified channel allocation, which is
particularly important when bi-amping or in bridge
mode.
IMPORTANT
Do not overload your amplifier by connecting the
channelBoutputtwice!
Channel A is used as the “dominant” channel and
when sourcing a dual output from Channel A the
followingstandardshouldbeused:
ChannelA=LeftorLowFrequencies.
ChannelB=RightorHighFrequencies.
Wheninbridgemode:
Pin1+=BridgeOutputPositive
Pin2+=BridgeOutputNegative.
Figure4.Speaker ConnectorWiringDiagram
3. Installation
Power Requirements
Power consumption for your model of the Synergy
Series amplifier is indicated on the rear panel for
maximumoutput.
Ensure that your mains voltage is the same as the
rearpanelmainsvoltagemarker(+/-10%).
Mounting
Your amplifier is designed for standard 19" rack
mounting and occupies 2 EIA rack units (3.5"). The
mountingcentresare:
Vertical: 3.0"(76.2mm)
Horizontal:18.2"(461.2mm)to18.7"(473.8mm).
The slots in the mounting flange will accept bolt
diametersupto1/4"(6.35mm).
We recommend that you provide additional support
for the amplifier, especially if road use is planned, as
the weight can bend some racks otherwise. This
supportcanbeprovidedbysecureshelving,support
railsorarearrackmountingstriptomatchupwiththe
rear rack mount ears provided on your Synergy Series
amplifier.
Cooling
Eachchannelof your SynergySeriesamplifieris cooled
by an axial fan which draws cool air from the front of
theunitand expelstheheatedair fromtherearof the
unit. These units offer two speed fans which run at
half speed, switching to full speed when the internal
0 0
heatsinktemperatureexceeds60C(128 F).
An unrestricted airflow into and out from the unit
must be provided. Any restriction of the air flow will
cause heat to build up within the unit and possibly
forcetheunitintoitsthermalshutdownmode.
If the units are to be operated in an environment
where the airflow is restricted such as sealed racks,
thecoolingshouldbe supplementedbyextracooling
fans to evacuate the heated air and aid the flow of
coolairthroughtheunit.
Input Wiring
IMPORTANT
Do not directly connect pin 1 on the amplifier’s input
or strapping XLR, to the amplifier’s chassis, speaker
groundorpowerground!
NOTE
Input signal ground is not to be used as a safety
ground(earth).
The input to your amplifier is a balanced 3-pin
system and requires all three pins to be connected.
Only high quality twin-core shielded cable should be
used.
When wiring for a balanced source the connector
goingtotheinputofyouramplifiershouldbewiredas
follows:
Pin1=GROUND/SHIELD.
Pin2=HOT(InPhase-noninverting).
Pin3=COLD(ReversePhase-inverting).
When wiring from an unbalanced source you must
ensurethatpin3isconnectedtopin1(inputground),
either by linking the pins in the input connector or by
thesourceequipment'soutputwiring.
Whenwiringforanunbalancedsource:
Pin1=GROUND/SHIELD
Pin2=HOT(inphasewiththeamplifier’soutput),
Pin3=GROUND/SHIELD(joinstopin1).
NOTE:
In-line XLR connectors often have a termination lug
thatconnectsdirectlytothechassisoftheconnector.
Donotlinkthislugtopin1attheamplifier’sinputasit
will defeat the amplifier’s input grounding scheme.
Thislugisoften referredtoasa"drain”andisusedto
provide a termination to the chassis for shielding
purposes when a floating signal ground is required
between the source and destination, or when
disconnecting the signal ground is required to
reduce earth loop noise, or noise induced into signal
groundsfromstraymagneticfields.
Output Wiring
Whenwiring toyourspeakersalwaysusethelargest
gauge wire your connector will accept. The longer
10 Installation

Australian Monitor
Operation 13
Your signal source (i.e. the equipment feeding the
amplifier) should have an output impedance of 600
Ohms or lower to avoid unwanted high frequency
lossinthecabling.
Inputoverloadoccursat+20.5dBu(8.25volts).
Hum Problems
Most equipment is designed for minimum hum when
used under ideal conditions. When connected to
otherequipment,andtosafetyearthinanelectrically
noisy environment however, problems will often
occur.
The three "E"s of hum and hum related noise which
canplagueyouraudiosystemare:
a)Electrostaticradiation,
b)Electromagneticradiation,and
c)Earthloops
Electrostatic radiation capacitively couples to
system elements causing an interference voltage
that mainly affects higher impedance paths, such as
amplifier inputs. The source is generally a nearby
highvoltage such as a mains lead or a speaker lead.
The problem can usually be reduced by moving the
offending lead away, or by providing additional
electrostatic shielding (i.e. an earthed conductor
whichformsabarriertothefield).
Electromagnetic radiation induces interference
currents into system elements that mainly effect
lower impedance paths. Radio transmitters or stray
magnetic fields from mains transformers are often
thecauseofthisproblem.Itisgenerallymoredifficult
to eliminate this kind of interference, but again,
moving the source away or providing a magnetic
shield(i.e.asteelshield)shouldhelp.
Earth loops can arise from the interfacing of the
variouspiecesofequipmentandtheirconnectionsto
safetyearth.
This is by far the most common cause of hum, and it
occurswhensource equipment andtheamplifierare
plugged into different points along the safety earth
wherethesafetyearthwiringhasacurrentflowingin
it. The current flowing through the wire produces a
voltage drop due to the wire’s resistance. This
voltage difference between the amp earth and
source equipment earth appears to the amplifier's
inputasasignalandisamplifiedashum.
Thereare threethingsyoucandotoavoid earthloop
problems:
Ensure your mains power for the audio system is
“quiet” i.e. without equipment on it such as air-
conditioning, refrigeration or lighting which may
generatenoiseintheearthcircuit.
Ensure all equipment within the system shares a
common ground/ safety earth point. This will
reducethe possibility of circulatingearth currents
as the equipment will be referenced to the same
groundpotential.
Ensure that balanced signal leads going to the
amplifierareconnectedtoearthatoneendonly.
Signal Ground-Lift Switch
When proper system hook-up has been carried out,
you may still have some hum or hum related noise.
This may be due to any of the previously mentioned
gremlins.
YourSynergySeriesamplifierhasa“SignalGroundLift”
switch which disconnects the input ground wiring
from the amplifier.A substantial drop in hum and or
hum related noise can result from judicious use of
thisswitch.
NOTE
Iftheinput groundliftswitch isusedyoumust ensure
adequate shielding of the input wiring. If the signal
source equipment does not provide adequate
shielding (i.e. a definitive connection to ground) you
must disconnect the shield from the input
connector's ground pin (Pin-1) and re-connect it to
the "drain" contact on the input connector. This will
ensure the shield on your input wiring actually goes
totheamplifierchassisandsubsequentlytoearth.
DO NOT CONNECT PIN-1 DIRECTLY TO THE
DRAIN CONNECTION.
You will defeat the amplifiers internal grounding
scheme and possibly cause instability to the
amplifier.
Always ensure that your amplifier is off and the
attenuators are down when you engage this switch.
Thisswitchshouldonlybeusedwhentheamplifieris
operatedfromabalancedsignalsource.
NOTE: Be wary of quasi-balanced outputs, these
areoftennomorethanfloatingunbalancedoutputs.
4. Operation
IMPORTANT
All signal source equipment should be adequately
earthed. This not only ensures your safety but
everybody else's as well. Faults can and do occur in
mains connected equipment where the chassis can
become “live” if it is not properly earthed. In these
instances the fault in a “floating” (ungrounded) piece
of equipment will look for the shortest path to ground
which could possibly be your amplifier's input. If the
faultcurrentislargeenoughitwilldestroytheinputto
your amplifier and look for the next available path,
whichmaybeyou!
Before making any connections to your Synergy
Seriesamplifierobservethefollowing:
Ensure the mains voltage supply matches the
labelontherearpanelofyouramplifier(+/-10%).
Ensure that the power switch is OFF (to the left -
0)
Ensure that all system grounds (earth) are
connected from a common point. Avoid powering
equipment within a system from multiple power
sources that may be separated by large
distances.
Check the continuity of all interconnecting leads
toyouramplifier,ensure that there are noopenor
shortcircuitedconductors.
Ensure that the power handling of your load
(speakers) can adequately cope with the power
outputoftheamplifier.
Before operating your Synergy Series amplifier,
ensurethat:
- The attenuators are at the “OFF” position (fully
anticlockwise).
- The GROUND LIFT Switch is not engaged
(shouldbeinthe“out”position).
- TheBRIDGESwitchisnot engaged if you arenot
runningtheampinbridgedmode.
Powering Up
REMEMBER
The amplifier should be the last piece of equipment
thatyou turnonandthe first pieceof equipmentthat
youturnoff.
We recommend turning the attenuators on your
amplifierdownwhenturningtheuniton.
WhenyoupowerupyourSynergy Series,youramplifier
goes through an establishment period before it will
accept signal. The Inrush Current Supression (ICS)
circuit is in operation for the first 0.5 seconds. This
limits the mains current to prevent "nuisance-
tripping"ofcircuitbreakers.
During this period you will hear a couple of relays
“click”, indicating mains is now directly applied to the
amplifierandthesignalpathisconnected.
While the ICS circuit operates there is also a 30dB
muteonthe signal input.Aftertwosecondsthis mute
will release, allowing any applied signal to pass
unattenuated.
When switching the amplifier off, wait a couple of
seconds before switching the unit on again. This
allowstheICScircuittoreset.
Level Matching
The normal operating position for the attenuator is
the max position (fully clockwise, no attenuation). In
this position the amplifier operates at full gain.
Turning the attenuator back (anticlockwise) reduces
theinputsensitivity.
NOTE:
If full power output is required you should operate
your amplifier with the front panel attenuator above
the half way (12o’clock) position, otherwise clipping
of the input circuitry and its resultant distortion will
occurbeforefulloutputpowerisachieved.
Sensitivity
Youramplifierisalineardeviceoperatingwithafixed
input to output voltage gain (less attenuation). The
maximum output voltage swing is determined by the
applied mains voltage, load, load type and the duty
cycleoftheappliedsignal.
The input sensitivity for your Synergy Series amplifier
when the attenuator is at maximum position (fully
clockwise)isnominally:
+4.0dB(1.23voltsin)forratedpowerintoa8ohm
load.
+3.0dB(1.10voltsin)forratedpowerintoa4ohm
load.
Each channel of your Synergy Series amplifier has a
nominal balanced input impedance of 30kOhms
(@1kHz) and should not present a difficult load for
anysignalsource.
12 Operation

Australian Monitor
Operation 13
Your signal source (i.e. the equipment feeding the
amplifier) should have an output impedance of 600
Ohms or lower to avoid unwanted high frequency
lossinthecabling.
Inputoverloadoccursat+20.5dBu(8.25volts).
Hum Problems
Most equipment is designed for minimum hum when
used under ideal conditions. When connected to
otherequipment,andtosafetyearthinanelectrically
noisy environment however, problems will often
occur.
The three "E"s of hum and hum related noise which
canplagueyouraudiosystemare:
a)Electrostaticradiation,
b)Electromagneticradiation,and
c)Earthloops
Electrostatic radiation capacitively couples to
system elements causing an interference voltage
that mainly affects higher impedance paths, such as
amplifier inputs. The source is generally a nearby
highvoltage such as a mains lead or a speaker lead.
The problem can usually be reduced by moving the
offending lead away, or by providing additional
electrostatic shielding (i.e. an earthed conductor
whichformsabarriertothefield).
Electromagnetic radiation induces interference
currents into system elements that mainly effect
lower impedance paths. Radio transmitters or stray
magnetic fields from mains transformers are often
thecauseofthisproblem.Itisgenerallymoredifficult
to eliminate this kind of interference, but again,
moving the source away or providing a magnetic
shield(i.e.asteelshield)shouldhelp.
Earth loops can arise from the interfacing of the
variouspiecesofequipmentandtheirconnectionsto
safetyearth.
This is by far the most common cause of hum, and it
occurswhensource equipment andtheamplifierare
plugged into different points along the safety earth
wherethesafetyearthwiringhasacurrentflowingin
it. The current flowing through the wire produces a
voltage drop due to the wire’s resistance. This
voltage difference between the amp earth and
source equipment earth appears to the amplifier's
inputasasignalandisamplifiedashum.
Thereare threethingsyoucandotoavoid earthloop
problems:
Ensure your mains power for the audio system is
“quiet” i.e. without equipment on it such as air-
conditioning, refrigeration or lighting which may
generatenoiseintheearthcircuit.
Ensure all equipment within the system shares a
common ground/ safety earth point. This will
reducethe possibility of circulatingearth currents
as the equipment will be referenced to the same
groundpotential.
Ensure that balanced signal leads going to the
amplifierareconnectedtoearthatoneendonly.
Signal Ground-Lift Switch
When proper system hook-up has been carried out,
you may still have some hum or hum related noise.
This may be due to any of the previously mentioned
gremlins.
YourSynergySeriesamplifierhasa“SignalGroundLift”
switch which disconnects the input ground wiring
from the amplifier.A substantial drop in hum and or
hum related noise can result from judicious use of
thisswitch.
NOTE
Iftheinput groundliftswitch isusedyoumust ensure
adequate shielding of the input wiring. If the signal
source equipment does not provide adequate
shielding (i.e. a definitive connection to ground) you
must disconnect the shield from the input
connector's ground pin (Pin-1) and re-connect it to
the "drain" contact on the input connector. This will
ensure the shield on your input wiring actually goes
totheamplifierchassisandsubsequentlytoearth.
DO NOT CONNECT PIN-1 DIRECTLY TO THE
DRAIN CONNECTION.
You will defeat the amplifiers internal grounding
scheme and possibly cause instability to the
amplifier.
Always ensure that your amplifier is off and the
attenuators are down when you engage this switch.
Thisswitchshouldonlybeusedwhentheamplifieris
operatedfromabalancedsignalsource.
NOTE: Be wary of quasi-balanced outputs, these
areoftennomorethanfloatingunbalancedoutputs.
4. Operation
IMPORTANT
All signal source equipment should be adequately
earthed. This not only ensures your safety but
everybody else's as well. Faults can and do occur in
mains connected equipment where the chassis can
become “live” if it is not properly earthed. In these
instances the fault in a “floating” (ungrounded) piece
of equipment will look for the shortest path to ground
which could possibly be your amplifier's input. If the
faultcurrentislargeenoughitwilldestroytheinputto
your amplifier and look for the next available path,
whichmaybeyou!
Before making any connections to your Synergy
Seriesamplifierobservethefollowing:
Ensure the mains voltage supply matches the
labelontherearpanelofyouramplifier(+/-10%).
Ensure that the power switch is OFF (to the left -
0)
Ensure that all system grounds (earth) are
connected from a common point. Avoid powering
equipment within a system from multiple power
sources that may be separated by large
distances.
Check the continuity of all interconnecting leads
toyouramplifier,ensure that there are noopenor
shortcircuitedconductors.
Ensure that the power handling of your load
(speakers) can adequately cope with the power
outputoftheamplifier.
Before operating your Synergy Series amplifier,
ensurethat:
- The attenuators are at the “OFF” position (fully
anticlockwise).
- The GROUND LIFT Switch is not engaged
(shouldbeinthe“out”position).
- TheBRIDGESwitchisnot engaged if you arenot
runningtheampinbridgedmode.
Powering Up
REMEMBER
The amplifier should be the last piece of equipment
thatyou turnonandthe first pieceof equipmentthat
youturnoff.
We recommend turning the attenuators on your
amplifierdownwhenturningtheuniton.
WhenyoupowerupyourSynergy Series,youramplifier
goes through an establishment period before it will
accept signal. The Inrush Current Supression (ICS)
circuit is in operation for the first 0.5 seconds. This
limits the mains current to prevent "nuisance-
tripping"ofcircuitbreakers.
During this period you will hear a couple of relays
“click”, indicating mains is now directly applied to the
amplifierandthesignalpathisconnected.
While the ICS circuit operates there is also a 30dB
muteonthe signal input.Aftertwosecondsthis mute
will release, allowing any applied signal to pass
unattenuated.
When switching the amplifier off, wait a couple of
seconds before switching the unit on again. This
allowstheICScircuittoreset.
Level Matching
The normal operating position for the attenuator is
the max position (fully clockwise, no attenuation). In
this position the amplifier operates at full gain.
Turning the attenuator back (anticlockwise) reduces
theinputsensitivity.
NOTE:
If full power output is required you should operate
your amplifier with the front panel attenuator above
the half way (12o’clock) position, otherwise clipping
of the input circuitry and its resultant distortion will
occurbeforefulloutputpowerisachieved.
Sensitivity
Youramplifierisalineardeviceoperatingwithafixed
input to output voltage gain (less attenuation). The
maximum output voltage swing is determined by the
applied mains voltage, load, load type and the duty
cycleoftheappliedsignal.
The input sensitivity for your Synergy Series amplifier
when the attenuator is at maximum position (fully
clockwise)isnominally:
+4.0dB(1.23voltsin)forratedpowerintoa8ohm
load.
+3.0dB(1.10voltsin)forratedpowerintoa4ohm
load.
Each channel of your Synergy Series amplifier has a
nominal balanced input impedance of 30kOhms
(@1kHz) and should not present a difficult load for
anysignalsource.
12 Operation

Australian Monitor
Warranty 15
6. Warranty
AustralianMonitorwarrants theoriginalpurchaserof
each Synergy-Series amplifier (purchased at an
authorised Australian Monitor dealer) that it will be
freefromdefectsinmaterialsandworkmanshipfor a
period of two (2) years from the original date of
purchase.
AustralianMonitor will, at its option, repair or replace
any unit or component covered by this warranty
which becomes defective or malfunctions under
normal use and service during the period of this
warranty, at no charge for parts or labour to the
originalowner.
This warranty does not cover blown fuses, faulty
fuse contacts, thermal problems due to
obstructed airflow, or defects or malfunctions
resulting from accidents, misuse, abuse,
operation with the incorrect AC mains voltage,
connection to faulty equipment, modification or
alteration without prior factory approval or
servicebyunauthorisedpersonnel.
It is the owner's responsibility to ensure that normal
maintenance inspections are carried out at regular
intervals as recommended in the maintenance
section of this manual. Australian Monitor reserves
the right to refuse warranty service where the owner
failstotakereasonablecareinuseandmaintenance
oftheamplifier.
Tovalidatethiswarranty,theoriginalpurchasermust
complete and mail the warranty registration card
directly to Australian Monitor within fourteen (14)
daysofpurchase.
To obtain warranty service, the equipment should be
shipped to an authorised Australian Monitor dealer
or direct to Australian Monitor. Freight to Australian
Monitorisattheowner'sexpense.
Units with a defaced serial number will not be
accepted for warranty service. Any evidence of
alteration, erasure or forgery of the purchase receipt
willalsovoidthiswarranty.
Australian Monitor accepts no liability for any
consequential damages, whether direct or
indirect, arising from the use or misuse of its
products.
Australian Monitor reserves the right to alter its
designsandspecifications at anytimewithoutnotice
orobligationtopreviouspurchasers.
Synergy-SERIES 2 YEAR WARRANTY REGISTRATION
IMPORTANT
Please complete this card and return it immediately after unpacking the product.
This card is to be sent DIRECTLY toAustralian Monitor.
NOTE! Warranty is effective ONLY upon receipt of this card.
COMPANY
NAME MODEL
o
ADDRESS SERIAL N
DATE PURCHASED
CITY DEALER
STATE CODE COUNTRY
Ensure that you fill out and send your warranty registration card.
Use this copy to record a duplicate of the details.
14 Maintenance
5. Maintenance
Your Synergy Series amplifier will need minimal
maintenance. No internal adjustments need to be
madetotheunittomaintainoptimumperformance.
To provide years of unhindered operation we
suggest a maintenance inspection be carried out on
aregularbasis,sayevery12monthsorso.
Fans
Due to the openness of the air path through your
Synergy Series amplifier, very little dust should settle
within the amplifier. The unit has been designed so
that any dust and/or foreign particles that do settle
within the amplifier will not unduly hinder the cooling
oftheunit.
The grille in front of the fans will act to limit the
amountof dust and lint enteringthe unit. You will find
in time that there will be a build up of dust and lint on
thegrillewhichmaystarttohindertheairflowthrough
theunit.Youshouldperiodicallyremovethedustand
keep the grille clean. Removal of dust from the rear
grillewillalsoaidcooling.
Over time, dust may build up on the leading edge of
the fan blades and reduce their cooling efficiency.
The time taken for this to happen will depend on the
environmentandtheamountofuse.
The fan blades are accessible once the lids are
removed and can be easily cleaned. You need only
hold the fan rotor still and wipe the dust off the
blades. Many users stall the fan and use
compressed air to blow the dust off the fan blades. It
is important to note that the fan blades must be held
still whilst blowing air over the blades otherwise you
mayburnoutthebearingsinthefan.
Fuses
Along with rear panel mains fuse, there are four (4)
rail fuses provided internally in the unit. These rail
fuses are in series with the positive and negative
output supply to each amplifier channel and provide
overallprotectionfor theoutputstage.If theamplifier
is subjected to heavy use such as short circuits, 2
ohm or bridged 4 ohm loads, these fuses will
eventually fatigue and may require replacing to
ensuretheydonotfailataninconvenienttime.
NOTE
Make sure the unit is off and is unplugged from the
mains. Give the main filter capacitors time to
discharge before removing lids and inspecting the
fuses.
You should replace the fuse if the element is
sagging or discoloured.Onlyeverreplace with the
sametypefuseandcurrentrating.
Whencheckingforafailedfuse,donotrelyonvisual
inspection alone. You should use an ohm meter to
checkcontinuity.
Only competent or qualified persons should
attempt any service or maintenance of your
amplifier. Australian Monitor

Australian Monitor
Warranty 15
6. Warranty
AustralianMonitorwarrants theoriginalpurchaserof
each Synergy-Series amplifier (purchased at an
authorised Australian Monitor dealer) that it will be
freefromdefectsinmaterialsandworkmanshipfor a
period of two (2) years from the original date of
purchase.
AustralianMonitor will, at its option, repair or replace
any unit or component covered by this warranty
which becomes defective or malfunctions under
normal use and service during the period of this
warranty, at no charge for parts or labour to the
originalowner.
This warranty does not cover blown fuses, faulty
fuse contacts, thermal problems due to
obstructed airflow, or defects or malfunctions
resulting from accidents, misuse, abuse,
operation with the incorrect AC mains voltage,
connection to faulty equipment, modification or
alteration without prior factory approval or
servicebyunauthorisedpersonnel.
It is the owner's responsibility to ensure that normal
maintenance inspections are carried out at regular
intervals as recommended in the maintenance
section of this manual. Australian Monitor reserves
the right to refuse warranty service where the owner
failstotakereasonablecareinuseandmaintenance
oftheamplifier.
Tovalidatethiswarranty,theoriginalpurchasermust
complete and mail the warranty registration card
directly to Australian Monitor within fourteen (14)
daysofpurchase.
To obtain warranty service, the equipment should be
shipped to an authorised Australian Monitor dealer
or direct to Australian Monitor. Freight to Australian
Monitorisattheowner'sexpense.
Units with a defaced serial number will not be
accepted for warranty service. Any evidence of
alteration, erasure or forgery of the purchase receipt
willalsovoidthiswarranty.
Australian Monitor accepts no liability for any
consequential damages, whether direct or
indirect, arising from the use or misuse of its
products.
Australian Monitor reserves the right to alter its
designsandspecifications at anytimewithoutnotice
orobligationtopreviouspurchasers.
Synergy-SERIES 2 YEAR WARRANTY REGISTRATION
IMPORTANT
Please complete this card and return it immediately after unpacking the product.
This card is to be sent DIRECTLY toAustralian Monitor.
NOTE! Warranty is effective ONLY upon receipt of this card.
COMPANY
NAME MODEL
o
ADDRESS SERIAL N
DATE PURCHASED
CITY DEALER
STATE CODE COUNTRY
Ensure that you fill out and send your warranty registration card.
Use this copy to record a duplicate of the details.
14 Maintenance
5. Maintenance
Your Synergy Series amplifier will need minimal
maintenance. No internal adjustments need to be
madetotheunittomaintainoptimumperformance.
To provide years of unhindered operation we
suggest a maintenance inspection be carried out on
aregularbasis,sayevery12monthsorso.
Fans
Due to the openness of the air path through your
Synergy Series amplifier, very little dust should settle
within the amplifier. The unit has been designed so
that any dust and/or foreign particles that do settle
within the amplifier will not unduly hinder the cooling
oftheunit.
The grille in front of the fans will act to limit the
amountof dust and lint enteringthe unit. You will find
in time that there will be a build up of dust and lint on
thegrillewhichmaystarttohindertheairflowthrough
theunit.Youshouldperiodicallyremovethedustand
keep the grille clean. Removal of dust from the rear
grillewillalsoaidcooling.
Over time, dust may build up on the leading edge of
the fan blades and reduce their cooling efficiency.
The time taken for this to happen will depend on the
environmentandtheamountofuse.
The fan blades are accessible once the lids are
removed and can be easily cleaned. You need only
hold the fan rotor still and wipe the dust off the
blades. Many users stall the fan and use
compressed air to blow the dust off the fan blades. It
is important to note that the fan blades must be held
still whilst blowing air over the blades otherwise you
mayburnoutthebearingsinthefan.
Fuses
Along with rear panel mains fuse, there are four (4)
rail fuses provided internally in the unit. These rail
fuses are in series with the positive and negative
output supply to each amplifier channel and provide
overallprotectionfor theoutputstage.If theamplifier
is subjected to heavy use such as short circuits, 2
ohm or bridged 4 ohm loads, these fuses will
eventually fatigue and may require replacing to
ensuretheydonotfailataninconvenienttime.
NOTE
Make sure the unit is off and is unplugged from the
mains. Give the main filter capacitors time to
discharge before removing lids and inspecting the
fuses.
You should replace the fuse if the element is
sagging or discoloured.Onlyeverreplace with the
sametypefuseandcurrentrating.
Whencheckingforafailedfuse,donotrelyonvisual
inspection alone. You should use an ohm meter to
checkcontinuity.
Only competent or qualified persons should
attempt any service or maintenance of your
amplifier. Australian Monitor

Australian Monitor
Distortion (re 4Ù)
THD (@ 1kHz) <0.02%
IMD SMPTE (60Hz : 7kHz 4:1) <0.03%
Input Impedance 20kohms
Input Sensitivity 1Vrms
Input CMRR >80dB
Signal/Noise Ratio
Linear >97dB
A-Weighted >104dB
Crosstalk >70dB
Indicators
Power, Status/Clip (L/R), Overload, Thermal, Fault
16 Specifications
Model:SY400
OutputPower
PerChannel@4ohms 0.1%THD
Singlechanneldriven 240W
Bothchannelsdriven 200W
(2ohmloadsnotrecommended)
Bridgemode
8ohmload 400W
(4ohmbridgingnotrecommended)
VoltageGain 28.3
OutputImpedance@1kHz <0.021ohms
Dampingfactor(@1kHre8ohms) >375:1
Slewrate >40V/µs
Frequencyresponse 15Hz-80kHz
@ 1KHz
RatedPowerinto4ohm(-3dB)
Dimensions
H,W,D=(87x482x400)mm
ShippingWeight = 12Kg
InputPower 575VA
Model:SY800
OutputPower
PerChannel@4ohms 0.1%THD
Singlechanneldriven 430W
Bothchannelsdriven 375W
(2ohmloadsnotrecommended)
Bridgemode
8ohmload 750W
(4ohmbridgingnotrecommended)
VoltageGain 38.7
OutputImpedance@1kHz <0.019ohms
Dampingfactor(@1kHre8ohms) >430:1
Slewrate >40V/µs
Frequencyresponse 15Hz-70kHz
@ 1KHz
RatedPowerinto4ohm(-3dB)
Dimensions
H,W,D=(87x482x400)mm
ShippingWeight = 15Kg
InputPower 1065VA
Common Specifications
(To all SYAmplifiers) Features of the SY Series
]Forced air cooled
]Equipped with XLR male/female
inputs
]Dual output connectors, binding
posts and 4 pole speaker
connectors
]GND lift facility
]Clip limiter circuit provided standard
]Toroidal mains transformer
]CE Approved (EMC & LVD)
Specifications 17
Model:SY1200
OutputPower
PerChannel@4ohms 0.1%THD
Singlechanneldriven 710W
Bothchannelsdriven 600W
(2ohmloadsnotrecommended)
Bridgemode
8ohmload 1200W
(4ohmbridgingnotrecommended)
VoltageGain 49.0
OutputImpedance@1kHz <0.018ohms
Dampingfactor(@1kHre8ohms) >450:1
Slewrate >41V/µs
Frequencyresponse 15Hz-75kHz
@ 1KHz
RatedPowerinto4ohms(-3dB)
Dimensions
H,W,D=(87x482x450)mm
ShippingWeight = 17Kg
InputPower 1650VA
Model:SY1600
OutputPower
PerChannel@4ohms 0.1%THD
Singlechanneldriven 920W
Bothchannelsdriven 800W
(2ohmloadsnotrecommended)
Bridgemode
8ohmload 1600W
(4ohmbridgingnotrecommended)
VoltageGain 56.5
OutputImpedance@1kHz <0.019ohms
Dampingfactor(@1kHre8ohms) >430:1
Slewrate >41V/µs
Frequencyresponse 15Hz-62kHz
@ 1KHz
RatedPowerinto4ohms(-3dB)
Dimensions
H,W,D=(87x482x450)mm
ShippingWeight = 20Kg
InputPower 2100VA

Australian Monitor
Distortion (re 4Ù)
THD (@ 1kHz) <0.02%
IMD SMPTE (60Hz : 7kHz 4:1) <0.03%
Input Impedance 20kohms
Input Sensitivity 1Vrms
Input CMRR >80dB
Signal/Noise Ratio
Linear >97dB
A-Weighted >104dB
Crosstalk >70dB
Indicators
Power, Status/Clip (L/R), Overload, Thermal, Fault
16 Specifications
Model:SY400
OutputPower
PerChannel@4ohms 0.1%THD
Singlechanneldriven 240W
Bothchannelsdriven 200W
(2ohmloadsnotrecommended)
Bridgemode
8ohmload 400W
(4ohmbridgingnotrecommended)
VoltageGain 28.3
OutputImpedance@1kHz <0.021ohms
Dampingfactor(@1kHre8ohms) >375:1
Slewrate >40V/µs
Frequencyresponse 15Hz-80kHz
@ 1KHz
RatedPowerinto4ohm(-3dB)
Dimensions
H,W,D=(87x482x400)mm
ShippingWeight = 12Kg
InputPower 575VA
Model:SY800
OutputPower
PerChannel@4ohms 0.1%THD
Singlechanneldriven 430W
Bothchannelsdriven 375W
(2ohmloadsnotrecommended)
Bridgemode
8ohmload 750W
(4ohmbridgingnotrecommended)
VoltageGain 38.7
OutputImpedance@1kHz <0.019ohms
Dampingfactor(@1kHre8ohms) >430:1
Slewrate >40V/µs
Frequencyresponse 15Hz-70kHz
@ 1KHz
RatedPowerinto4ohm(-3dB)
Dimensions
H,W,D=(87x482x400)mm
ShippingWeight = 15Kg
InputPower 1065VA
Common Specifications
(To all SYAmplifiers) Features of the SY Series
]Forced air cooled
]Equipped with XLR male/female
inputs
]Dual output connectors, binding
posts and 4 pole speaker
connectors
]GND lift facility
]Clip limiter circuit provided standard
]Toroidal mains transformer
]CE Approved (EMC & LVD)
Specifications 17
Model:SY1200
OutputPower
PerChannel@4ohms 0.1%THD
Singlechanneldriven 710W
Bothchannelsdriven 600W
(2ohmloadsnotrecommended)
Bridgemode
8ohmload 1200W
(4ohmbridgingnotrecommended)
VoltageGain 49.0
OutputImpedance@1kHz <0.018ohms
Dampingfactor(@1kHre8ohms) >450:1
Slewrate >41V/µs
Frequencyresponse 15Hz-75kHz
@ 1KHz
RatedPowerinto4ohms(-3dB)
Dimensions
H,W,D=(87x482x450)mm
ShippingWeight = 17Kg
InputPower 1650VA
Model:SY1600
OutputPower
PerChannel@4ohms 0.1%THD
Singlechanneldriven 920W
Bothchannelsdriven 800W
(2ohmloadsnotrecommended)
Bridgemode
8ohmload 1600W
(4ohmbridgingnotrecommended)
VoltageGain 56.5
OutputImpedance@1kHz <0.019ohms
Dampingfactor(@1kHre8ohms) >430:1
Slewrate >41V/µs
Frequencyresponse 15Hz-62kHz
@ 1KHz
RatedPowerinto4ohms(-3dB)
Dimensions
H,W,D=(87x482x450)mm
ShippingWeight = 20Kg
InputPower 2100VA

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Australian Monitor