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Attention!

Cables:
This product should only be used with high quality, screened twisted pair audio cables, terminated
with metal bodied 3-pin XLR connectors. The cable should be connected to pin 1. Any other cable
type or configuration for the audio signals may result in degraded performance due to electromagnetic
interference.

Electric Fields:
Should this product be used in an electromagnetic field that is amplitude modulated by an audio
frequency signal (20Hz to 20KHz), the signal to noise ratio may be degraded. Degradation of up to
60dB at a frequency corresponding to the modulation signal may be experienced under extreme
conditions (3V/m, 90% modulation).

Summary of Contents for dn330

Page 1: ...1 Operators Service Manual DN330 EVI PRO AUDIO GROUP KlarkTeknikBuilding WalterNashRoad Kidderminster WorcestershireDY117HJ England Tel 01562 741515 Fax 01562 745371...

Page 2: ...2...

Page 3: ...EUdirectivesbymeeting thefollowingstandards EN 50081 1 EN55022 class B EN 50082 1 IEC801 Part 2 4 ENV 50140 ENV 50141 Signed N G Tembe Authority HeadofEngineering Date 19thJanuary1996 Attention Theatt...

Page 4: ...figurationfortheaudiosignalsmayresultindegradedperformanceduetoelectromagnetic interference Electric Fields Should this product be used in an electromagnetic field that is amplitude modulated by an au...

Page 5: ...5 CONTENTS INTRODUCTION 8 THEDN330PRESETEQUALISER 9 INSTALLATION 11 INSTRUMENTFAMILIARISATION 13 AUDIO CONNECTIONS 14 SPECIFICATIONS 15 SERVICEINFORMATION 16 SCHEMATICS...

Page 6: ...eenprepared tocomplywiththepowersupplyrequirementsthatexistinyourlocation Precautions Beforeconnectingthisunittothemainspower ensurethattheoperatingvoltageiscorrectforyourlocal supply Donotinstallthis...

Page 7: ...undergone stringentqualitycontrolinspectionandtestspriortopackingandleftthefactoryinperfectoperatingand mechanicalcondition If however theunitshowsasignofdamage notifythetransportationcompanywithoutde...

Page 8: ...annotalwaysovercomeallfrequencyresponserelatedproblems Thereareapplicationswherethe abilitytocutorboosttheresponseataparticularfrequency oroveracertainbandwidthotherthanthe equaliserspecifiedone isreq...

Page 9: ...and continuous equalisationresponsecurveinordertocorrectlycontourtheoverallresponsecharacteristicsofasound system loudspeaker recordingeffectoraudiochannel Toachievethis theindividualfiltersmustbe cap...

Page 10: ...t eachinstrumentisgiventhefullbacking ofKlarkTeknik s reliabilitycontrol whichproveseachproductagainstaspecificationconsistentwith thehighestprofessionalstandards Onlytopqualitycomponentsareused andev...

Page 11: ...tage pleaserefertothe VoltageChangeover sectiononpage12 IMPORTANT Mainsvoltageadjustmentsshouldonlybecarriedoutbyaqualifiedservicetechnician TheDCsupplycanbeconnectedeitherbyseparate4mm Banana plugsor...

Page 12: ...nded foruseasabackuppowerforevacuationandsimilarusesinconditionsofmainsfailure Upon failureofthemainssupply astheunitisalreadyoperationaltheDCsupplyisonlyrequiredto furnishthecurrentnecessarytomaintai...

Page 13: ...rom 15Hz to 300Hz 4 Thehighfrequencyfilter lopass hasacontinuouslyvariableturnoverfrequencyfrom2 5khz to 30KHz 5 Thirtyhighquality sealedrotarypresetfilterlevelcontrolseachprovidingbetween 12dB boost...

Page 14: ...yoftheDCsupplymustbemaintainedforoperationthoughincorrect connectionwillnotdamagetheunit 10 InputandoutputconnectionsareviacomplementaryXLRstyleconnectors Forwiring detailsseethepageentitledAudioConne...

Page 15: ...o 600 ohms and 20dBu into 2K Itisrecommendedthattheequaliserfeedsintoabalancedinput howevertofeedanunbalanced inputitisnecessarytoconnecttheantiphaseoutputtoground ThisisbestcarriedoutontheXLR outputc...

Page 16: ...ise 20Hzto20kHzunweighted 86dBu Gain 6 to 12dB Filters Type Proprietary combining ISOcentrefrequencies 30 25Hz to 20kHz Frequencytolerance 5 Maximumboost cut 12dB Highpassfilter 15Hzto300Hz 12dB octav...

Page 17: ...arpanel Toselectthealternativevoltageitisonlynecessarytoslidethevoltageselectorswitch locatedtothe rightofthemainstransformer totheotherposition Pleaseensurethattherearpanelvoltagelabelisremovedandrep...

Page 18: ...250 300mA 24V power supply How can I run the DN330 from it Answer 1 WiththesupplyOFF connectacapacitorofapproximately10000mfdanda workingvoltageofatleast25Vacrossthe outputterminals 2 Connectthepowers...

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