W Audio AMP50 - XTR 1000 User Manual - Operating Instructions
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XTR Series Power Amplifiers User Manual
7
Operating instructions
Operation
Afterhavingconnectedyouramplifiertothemains,turnbothgaincontrolscounterclockwisetothe
“min”position.Thelastproducttobeswitchedonisamplifier.The“ON”and“PROTECT”LEDlightsup
now.Ifitdoesnot,checkiftheamplifierisconnectedtothemainscorrectly.
Aftertheturnondelaythespeakersareactivated(PROTECT-LEDisoff).
Afterhavingsetthevolumecontrolsofthepre-amplifiertothe“OFF”position,turnthegaincontrolsof
youramplifiertomid-position.NowadjustthevolumewiththegaincontrolsCHAandCHB.
Allimportantoperatingmodesoftheamplifierarearrangedonthefrontpanel.
Ifyouwanttoswitchoffthesystem,switch off the amplifier firstinordertoavoid
acousticshocksonthespeakers.
Problem Chart
-20dBto30dB
-Outputlevel
Clip
-Shortcircuitorimpedancetooloworsignaldistorted
Protect
-Activeduringstabilisationperiodafterswitchingonorwhenone
oftheprotectivecircuitsisactivated
Problem
Cause
Solution
Nopower
Thepowercableisnotconnected
Checkthepowercableandanyextensioncables
Nosound
Thepowercableoftherespectiveproductis
notconnectedcorrectlyornotatall.
Checkthepowercableandiftheplugsareproperly
connectedwiththesockets
Theconnectionsocketortheplugisdirty
Cleanthesocketand/ortheplug
Noise
Theinputsignalistoostrong
Reducetheinputsignalviathegaincontrol
Fandoesnotwork,
LEDsdonotlightup
Thepowercableisnotconnected
Connectthepowercable
ProtectLEDlights
uppermanently
DCvoltageoninput
Switchamplifieroffandhavetheproductchecked
byaservicetechnician
Amplifieroverheatsduetoobstruction
Cleanthefangrill
Impedanceofspeakerstoolow
Ensureminimum4Ωload
Shortcircuitinspeakerconnection
orinspeakers
Checkspeakersandconnections
CAUTION! - DANGER TO LIFE
DISCONNECT FROM THE MAINS BEFORE
STARTING MAINTENANCE OPERATION