AustralianMonitor-SY800-pwr-sm维修电路原理图.pdf

Australian Monitor 1 Clyde Street, Silverwater NSW 2128 Australia +61 2 9647 1411 .au SERVICE INFORMATION SY800 POWER AMPLIFIER CONTENTS: OPERATION MANUAL SCHEMATIC DIAGRAMS RadioFans.CN 收音机爱 好者资料库SY 400SY 800SY 1200SY 1600SY 400VSY 800VSY 6125SY 4200Operation ManualProfessional Audio AmplifierRadioFans.CN 收音机爱 好者资料库The rear panel of this amplifier has a number ofmarkings and internationally recognized symbolsrelating to the hazards and precautions that shouldbetakenwhenoperatingMAINSconnectedequipment.The presence of a LIGHTNING FLASH with anarrowhead contained within the boundaries of anequilateral triangle is intended to alert the user thatdangerous uninsulated voltages may exist within theamplifiers enclosure. These voltages may be of asufficient magnitude as to constitute the risk of anelectricalshock.Thissymbolisreinforcedwiththetext:ThepresenceofanEXCLAMATIONMARKcontained within the boundaries of an equilateraltriangle is intended to alert the user that there isimportant operating and maintenance literature thataccompaniestheamplifier.The amplifier should not be operated in a situationwhere it may encounter the entry of water, rain, oranyfluids.Toexposetheunittotheaboveconditionsmay make the operation of the unit hazardous andincreasetheriskofelectricalshock.IMPORTANT!Please read carefully.This operation manual contains important informationregarding safety precautions, installation, performance,operation and maintenance of your Synergy-Series poweramplifier. You should familiarize yourself with the contentsofthismanualoperatingyouramplifier.beforeSafety Precautionsand LabellingREFER SERVICING TOQUALIFIED PERSONNEL.NO USER SERVICEABLEPARTS INSIDE.The user should not attempt to service the amplifier.Onlyqualifiedandknowledgeablepersonnelfamiliarwith the internal workings of the unit should attemptanyrepair,servicingorauthorizedmodificationtotheunit. The unit does not contain any parts which theuser can service or re-use in this or any otherproduct.If you are in need of special assistance and theinformation you require is outside the scope of thismanual, please contact your nearest service agentorAustralianMonitordirect:THE TECHNICAL OFFICERAUSTRALIAN MONITORC/- AUDIO TELEX COMMUNICATIONS PTY LTDPRIVATE BAG 149,SILVERWATER. N.S.W. 1811AUSTRALIA.PhoneFaxLocal(02)9647-1411(02)9748-2537International61-2-9647-141161-2-9748-2537E.auI.au!CAUTION!RISK OF ELECTRICAL SHOCKDO NOT OPEN!WARNING!DO NOT EXPOSE TO EITHERRAIN OR MOISTURERev 2 16/06/04Rev 3 26/06/04Rev 4 28/06/04Rev B 28/06/04AustralianMonitorFeatures:?Custom designed, 2RU heavy duty steelchassis.Open, modular construction for ease ofservicing.Symmetrical layout - even weight distribution.High current power supply.High efficiency toroidal mains transformer.Binding post and 4 pole speaker outputconnection (no 4 pole speaker outputs onSY400V, SY800V, SY4200 & SY6125).Stereo or bridged operation (no bridgingavailable on SY400V & SY800V).Input signal strapping (loop through) connectors(not available on SY6125).?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.Signal ground lift switch.Built in limiter circuit.High-quality, close-tolerance componentsthroughout.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 componentryhave been optimized to provide the user with,and.stability reliabilitylongevityContentsPage1.Introduction52.Controls,ConnectorsandIndicators62.1FrontPanel72.2RearPanel113.Installation144.Operation165.Maintenance186.Specification20List of IllustrationsPageFigure1.BlockDiagram5Figure2.FrontPanelLayout(SY6125,SY1200,SY4200)6Figure6.SpeakerConnectorWiring15Figure3.RearPanelLayout(SY400,SY1600)9Figure4.RearPanelLayout(SY6125,SY4200,SY400V)10Figure5.TopLidLayout(SY6125,SY4200)13AustralianMonitor1. IntroductionCongratulations on choosing Australian Monitor foryourprofessionalamplificationrequirements.The design of our Synergy-Series Audio PowerAmplifiers embraces all the aspects of a welldesigned amplifier. The visual design, mechanical,electrical and sonic parameters, along with ourdedicated manufacturing process, have all beenoptimized to provide a professional tool that exhibitsquality,reliabilityandlongevity.The Synergy-Series amplifiers are 2 unit (3.5) high,19wide,rackmountableunits.Each channel of the amplifier comprises a balancedactive input with a buffered attenuator driving adifferential class A drive stage which in turn drives afan-cooled,classAB,BJToutputstageconfiguredasan emitter follower. The amplifier operates from ahighcurrent-capablelinearpowersupply.These amplifiers have been specifically designed todelivertheirhighpoweroutputwithminimaldistortion, and provide the critical degree of controlrequired by your speakers, at high duty cycles forextendedperiods.Figure 1 Amplifier Block DiagramIntroduction 52.Controls,Connectors&IndicatorsFigure 2Front Panel Layout (left to right - SY4200, SY1200, SY6125)6 Controls & ConnectorsSY 6125LEVEL-ALEVEL-BLEVEL-CLEVEL-DLEVEL-ELEVEL-FMINMINMINMINMINMINMAXMAXMAXMAXMAXMAXACEBDFSTATUSSTATUSSTATUSOVERLOADOVERLOADOVERLOADPOWERTHERMALFAULTSY 4200LEVEL-ALEVEL-BLEVEL-CLEVEL-DMINMINMINMINMAXMAXMAXMAXACBDSTATUSSTATUSOVERLOADOVERLOADPOWERTHERMALFAULTAustralianMonitorAustralianMonitorFront PanelThe Synergy Series differ only slightly across allmodelsandallsharethesamefeaturesontheirfrontpanels.shows the panel layout of three Synergyamplifiers,SY4200,SY1200&SY6125.TheSY1200 looks the same as the SY400, SY800,SY1600, SY400V & SY800V. The functions of thecontrolsandindicatorsareasfollows:Level control for your amplifier is provided by apotentiometer on the front panel and indicatesgain. There are 2 controls on allmodelsexcept the SY4200 which has 4 controls and theSY6125 which has 6 controls. Each control islabelledforthechannelwhichitcontrols.This is a dual colour LED which displays thestatus of the output stage and displays threelevelsofoperation.Theselevelsare:Below1watt(unlit)1wattandabove()1dBbelowactualclipping()The LED will turn green once the output voltageexceeds 2.828 volts (1 watt re 8 ohms or 2 wattsre4ohms).FortheSY400V&SY800Vtheoutputvoltageis10volts&7.070volts(2wattsre50ohm&25ohm)respectivelyThe LED will change to red once the outputexceeds the -1dB point before actual clipping oftheamplifiersoutputstage.Thethresholdofthe-1dB point is referred to the amplifier supply railsand alters with changes in the mains supply,changesintheloadanddutycyclefluctuations.The attack and decay time (ballistics), of thestatus circuit are those of a Peak ProgrammeMetre(P.P.M.)If using this indicator to line up sensitivities, applya steady state tone (e.g. slate on a mixingconsole). The 1 watt level is the mid-pointbetweentheindicatorilluminatingandextinguishinggreen.Figure 11 Attenuator2 Status IndicatorSynergygreenredNOTE: The amplifier is not damaged by runningintoclipping,.Tomaximisethe life of your speakers, try to keep clippinginfrequent. Clipping on the SY400V & SY800Vmay cause speaker transformers to saturatecausing the amplifier to shut down. For thisreason the voltage limiters should always beengaged on the SY400V & SY800V (see RearPanel-LimiterSwitchonpage11).ThisLED will illuminate when an overloadconditionexists.Overload conditions can occur under extremeoperatingconditionssuchas:-complexorverylowloads-overdrivingtheamplifier-speakertransformersaturationIt should be noted that the minimum load for theamplifier is 4 ohms per channel (8 ohm bridged)except the SY400V which has a minimum load of50 ohms per channel and the SY800V which hasa minimum load of 25 ohms per channel. (TheSY400V&SY800Vcannotbebridged).If an overload occurs, the amplifier will shut downand mute all outputs except the SY6125 &SY4200 which will only mute the channel with theoverload. If the overload is only transitory, thenthe amplifier will resume normal operation afterapproximately 7 secs. If the fault is continuous,thentheamplifierwillremainmuted.Presstheswitchtoforpower( )andfor power(). At start-up (turn-on), the inputto the amplifier is muted for approximately twoseconds.butspeakersmaybe3 Overload Indicator4 PowerSwitchamberupon Idownoff05 ThermalIndicatorIn the advent of a thermal overload, this LED willturnindicating that the internal operatingtemperature of one or both amplifier channelshas exceeded a safe level of operation and thechannels will be automatically muted. The fanswill continue to run and once the effectedchannel/s have had a cool-down period, they willun-muteandreturntonormaloperation.red,Controls & Connectors 7NOTE: You should always ensure that the fangrille is kept clean and free from the build upofdustandlintred.Thiswillensurelongeroperationof your amplifier and reduce the possibility of itprematurely going into thermal shutdown mode.See the section “Installation - Cooling “ on page14forrecommendedcoolingprocedures.ThisLED indicates a significant problem withthe amplifier and the amplifier should be returnedtoanauthorisedtechnicianforservicing.6 On IndicatorThis LED will illuminateand indicates thattheamplifierisonandreceivingmainspower.blue7 Fault Indicator8 Controls & ConnectorsAustralianMonitorControls & Connectors 9Figure3 RearPanelLayout(lefttoright-SY400,SY1600)10 Controls & ConnectorsBALANCED INPUTSSPEAKER OUTPUTS(200W/4 Ohms each)(200W/4 Ohms each)SPEAKER OUTPUTSSerial NoSY 4200CH CCH CCH BCH BCH ACH ACH DCH DSIGNAL INPUTWIRINGPin 1 = GndPin 2 = + vePin 3 = - veMAINSBRIDGEBRIDGE(8 Ohms Min)(8 Ohms Min)230 V50/ 60 Hz (1333 VA)(F3) FUSE 6.3 Amps S.B.ENGINEERED BY AUDIO TELEX COMMUNICATIONS PTY LTD SYDNEY AUSTRALIAABCDBALANCED INPUTSSPEAKER OUTPUTS ( 125 W re 4 Ohms )SPEAKER OUTPUTS ( 125 W re 4 Ohms )Serial NoSY 6125CH-DCH-CCH-BCH-ACH-ECH-FSIGNAL INPUTWIRINGPin 1 = GndPin 2 = + vePin 3 = - veMAINSGNDGNDGNDPUSH TOPUSH TOBRIDGEBRIDGEBRIDGEBRIDGE(8 Ohms Min)(8 Ohms Min)LIFTLIFTLIFT230 V50/ 60 Hz (1350 VA)(F3) FUSE 6.3 Amps S.B.ENGINEERED BY AUDIO TELEX COMMUNICATIONS PTY LTD SYDNEY AUSTRALIAABCDEF1 21 21 2STEREO: 2x 200W/100V OUTPUT/CLASS 2VFigure4 RearPanelLayout(lefttoright)-SY400V,SY6125,SY4200AustralianMonitorRear Panel8 Balanced Input8a Signal Strapping9 Signal Ground Lift Switch10 Binding Post Outputs10a Speaker Output ConnectorAfemale3-pinXLRtypeconnectorisprovidedoneachinput:Pin1=SignalGround;Pin2=Hot(non-invertingorinphase);Pin3=Cold(invertingorreversephase).Amale 3-pin XLR type connector is provided (noton SY6125) and wired in parallel with the femaleinput XLR for strapping / looping signal betweenamplifiers.Whenthisswitchisengageditdisconnectssignalground from the input connectors on bothchannels. It is intended to be used when “hum” iscaused by earth loops (due to different groundpotentials between source equipment and theamplifier) or stray magnetic field pick up on theinput ground/shield wiring. (It does not interruptsignalgroundcontinuityonthestrappingconnector).ThegroundliftfortheSY6125isaDIPswitchandis located on the rear panel, one switch perchannel.Itshouldbesliduptolifttheground.Touch proof binding posts (banana jacks) areprovided for speaker output termination withbanana plugs or bare wire. The red post is usedasand the black post is used as.Forbridgeconnection,useonlytheredposts. (A 4 pole speaker connector is provided (not onSY400V, SY800V, SY6125, SY4200) as anadditional speaker output. This standard ofloudspeaker-to-amplifierconnectionallowsaccess to both channels of the amplifier via theone connector for bi-amp applications. Channel-The amplifier should be turned offbeforeengagingthisswitch!positivenegativeTheground lift for the SY4200 is a DIP switch and islocatedinsidetheamplifierandaccessedthrough the lid, one switch per channel. It shouldbeslidtothereartolifttheground.The SY400V & SY800V cannot bebridged).A is considered the dominant channel and hasboth channels wired to the speaker connector.See the installation section of this manual fordetailedinformationonspeakerconnectorwiring.YouramplifierisfittedwitheitheraninternationallyrecognisedIECmainsinletconnector (SY400, SY800, SY1200, SY400V,SY800V, SY6125, SY4200) or has an internallyconnectedmainslead(SY1600).Please ensure that the connecting mains lead forusewiththeIECconnectorisofanapprovedtypeandisofsufficientcurrentcarryingability.Either a 20mm x 5mm fuse drawer is providedwithin the housing of the IEC mains connector(SY400, SY800, SY1200,) or the amplifier is fitted with aresettablecircuitbreaker(SY1600).Fuse:When you receive your amplifier it will have aworking fuse and a spare fuse inside the fusedrawer. The drawer can only be opened once themains lead is removed from the connector. Thefuse is provided to protect both the mains andyour amplifier as well as reduce the degree ofdamageifaninternalfaultexists.When replacing the fuse, replace with an anti-surge (slow blow) type of the current ratingindicated on the back panel above the fuseholder.Warranty does not cover a blown fuse or anyresulting damage due to the use of an incorrectfuseratingortype.Breaker:If the circuit breaker trips, allow 3 mins for thecontacts to reset thermally before pushing theresetbuttontoresetitmechanically.PushingthisswitchengagestheBRIDGED/MONO mode of operation. In thismode your amplifier will only accept signalapplied to channelAs input XLRs and the level ofboth channels will be controlled by channel As11 Mains Connection12 Mains Fuse or Circuit Breaker13 Bridge SwitchNOTE:Yourunitmustalwaysbeearthed!inSY400V, SY800V,SY6125, SY4200Controls & Connectors 1112 Controls & Connectorsattenuator. The output from channel B willautomaticallybeoftheoppositepolarity(reversedphase)andspeakerterminationshouldbe sourced from the red binding-post outputs.Alternatively, the speaker could be connected topoles 1+ & 2+ of the 4 pole speaker connector(seeInstallation-OutputWiringonpage11).TheSY400V&SY800Vcannotbebridged.with the limiterswitchengaged.The SY6125 allows bridging of channels B & Cand channels D & E. The bridge switch is locatedon the rear panel. When channels B & C arebridged, channel B input should be used and thered binding post of channel B is positive while thered binding post of channel C is negative. Whenchannels D & E are bridged, channel E inputshould be used and the red binding post ofchannel E is positive while the red binding post ofchannelDisnegative.The SY4200 allows bridging of channels A & Band channels C & D. This is done through the lidwith a switch. Sliding the switch toward the rearenables bridging. When channels A & B arebridged, channel A input should be used and thered binding post of channelAis positive while thered binding post of channel B is negative. Whenchannels C & D are bridged, cha