AUSTRALIAN MONITOR AM1600, Operation Manual

Page 1: ...O p e r a t i o n M a n u a l AM1600 ...

Page 2: ...n equilateral triangle is intended to alert the user that there is important operatingandmaintenanceliteraturethataccompanies the unit The unit should not be operated in a situation where it mayencountertheentryofwater rain oranyfluids To exposetheunittotheaboveconditionsmaymakethe operation of the unit hazardous and increase the risk of electrical shock The user should not attempt to service the ...

Page 3: ...witching control Input muting at turn on Inputovervoltageprotection Radio frequencyinterferencesuppression Short circuit protection and indication Active balanced inputs 21 Position detented attenuators Massive heat sink heat exchangers Efficient front to back cooling Quad twin speed axial fans Multi role level fault indication Front and rear carry handles Front and rear mounting points High quali...

Page 4: ... Operation 13 5 Bridge Mode 15 6 Two Ohm or Not Two Ohm 16 7 Maintenance 17 8 Warranty 18 9 Specification 19 List of Illustrations Page Figure 1 Block Diagram 5 Figure 2 Front Panel Layout 6 Figure 3 Rear Panel Layout 8 Figure 4 Case Dimensions 10 Figure 5 Speakon Connector Wiring 12 Figure 6 Bridge Mode Speaker Wiring 15 ...

Page 5: ...evity The AM1600 amplifiers are 3 unit 5 25 tall 19 wide rack mountable units Each channel of the amplifier comprises a balanced active input with an attenuator driving a differential class A drive stage which in turn drives a fan cooled class AB MOSFET output stage configured as a sourcefollower Theunitoperatesfromahighcurrent capable linear power supply Theseunitshavebeenspecificallydesignedtode...

Page 6: ...6 Controls Connectors Figure 2 Front Panel Layout 2 Controls Connectors Indicators Insert 1 VU Meter Satus Indicator ...

Page 7: ... LED will not illuminate during normal use of the amplifier In the advent of a thermal overload this LED will illuminateredindicatingthattheinternaloperating temperature of one or both amplifier channels has exceededasafelevelofoperationandthe amplifier willbeshutdown Thefanswillcontinuetorunand oncetheamplifierhascooleddownsufficiently the amplifierwillstartupautomaticallyprovidingInrush Current ...

Page 8: ...8 Controls Connectors Figure 3 Rear Panel Layout ...

Page 9: ...VE BLUE NEUTRAL GREENANDYELLOW EARTH Controls Connectors 9 CAUTION Your amplifier must always be earthed 9 Mains Circuit Breaker A push to reset thermal acting circuit breaker is suppliedonyouramplifierprovidingoverallprotection of your amplifier s power supply and the interconnectingmains Thebreakerwillisolatethe active mains conductor in the event of a high current internal fault or in continued...

Page 10: ...Figure 4 Dimensions 10 Installation ...

Page 11: ...This support can be provided by secure shelving support rails or a rearrackmountingstriptomatchupwiththerearrack mount points provided on your amplifier Cooling EachchannelofyourAM1600amplifieriscooledbyan axial fan which draws cool air from the front of the unit andexpelstheheatedairviatherearoftheunit These units offer two speed fans which run at half speed switching to full speed when the inter...

Page 12: ...ctlytothechassisoftheconnector Do not link this lug to pin 1 at the amplifier s input as it will defeat the amplifier s input grounding scheme This lug is often referred to as a drain and is used to 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 ea...

Page 13: ...mend turning the attenuators on your amplifier down when turning the unit on When you power up your amplifier your amplifier goes through an establishment period before it will acceptsignal TheInrushCurrentSuppression ICS circuit is in operation for the first 0 5 seconds This limitsthemainscurrenttoprevent nuisancetripping of circuit breakers During this period the THERMAL LED will flash red whils...

Page 14: ...d from a balanced signal source NOTE Be wary of quasi balanced outputs these are often no more than floating unbalancedoutputs 14 Operation 1 2 Each channel of your amplifier has a nominal balanced input impedance of 18k Ohms 1kHz and should not present a difficult load for any signal source Your signal source i e the equipment feeding the amplifier should have an output impedance of 600Ohmsorlowe...

Page 15: ...foranapplica ble load AsshowninFigure6 therearefourstepsinsettingup yourAM1600amplifierforrunningitinBRIDGEmode Whilst the amplifier is off 1 ConnectthesignalsourcetotheChannel Afemale inputXLR 2 Loop from Channel A male XLR to Channel B fe male input XLR with a Reverse Phase Lead A reverse Phase Lead is wired Channel A Channel B Pin 1 to Pin 1 Pin 2 to Pin 3 Pin 3 to Pin 2 3 Connect your load bet...

Page 16: ...eatagiven frequency Though this method is in line with the variousstandardsthatexist itonlygivesanindication to the maximum voltage swing before clipping for a given load This method of rating power does not give an indication of the current Ampere capability of the amplifier nor does it show the amplifier s ability to sustainhighenergywaveforms YourAM1600amplifierhasbeenspecificallydesigned to be...

Page 17: ...eed only hold the fan rotor still and wipe the dust off the blades Many users stall the fan and use Maintenance 17 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 may burn out the bearings in the fan NOTE Make sure the unit is off and is unplugged from the mains Give the main filter c...

Page 18: ...ERIES2YEARWARRANTYREGISTRATION IMPORTANT Please complete this card and return it immediately after unpacking the product This card is to be sent DIRECTLY to Australian Monitor NOTE Warranty is effective ONLY upon receipt of this card COMPANY NAME MODEL ADDRESS SERIAL No DATE PURCHASED CITY DEALER STATE CODE COUNTRY Ensure that you fill out and send your warranty registration card Use this copy to ...

Page 19: ...ms THD N 1 kHz 0 005 IMDSMPTE 60 Hz 7 kHz 4 1 0 015 IMD DIM 30 3 15kHz square 15 kHz 0 007 Output Impedance 1 kHz 0 013 ohms Damping Factor 1 kHz re 8 ohms 650 1 Output Rise Time 2 2µS 80 leading edge of 20kHz square wave Slew Rate 65V per µS leading edge 20kHz square wave clipping Frequency Response 20 Hz 20 kHz 0 5 0 15 dB 3dB points 5 Hz 90 kHz Input Impedance Line to Line Balanced 18k ohms Inp...

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