Williams AV AMPETRONIC MLD5 Manuel du système

MLD5

Installation Handbook

www.ampetronic.co

www.williamsav.com

Handbook Contents

• Safety

• Introduction

• Quickstart

• Installation

• Overview

• Troubleshooting

• Accessories

• Technicalspecications

• Warranty

• Declarationofconformity

Box Contents

• 1xMLD5

• 2xLoopconnector

• 1xStatusconnector

• 1xDCconnector

• 1xInstallationhandbook

• 2x2mmsteel1Urackmountbrackets

• 1xPowercable(regionsspecic)

• 1xInductionLoopSign

This symbol is used to alert the user to important

operating or maintenance instructions.

The Lightning bolt triangle is used to alert the user

to the risk of electric shock.

SAFETY

1. Itisimportanttoreadtheseinstructions,andtofollowthem.

2. Keepthisinstructionmanualinanaccessibleplace.

3. Cleanonlywithadrycloth.Cleaninguidsmayeffecttheequipment.

4. Donotblockanyventilationopenings.Installinaccordancewiththemanufacturer’s

instructions.

5. Donotinstallthisequipmentnearanyheatsourcessuchasradiators,heatingventsorother

apparatusthatproducesheat.

6. WARNING–THISAPPARATUSMUSTBEEARTHED/GROUNDED.

7. Onlypowercordswiththecorrectpowerconnectormaybeusedtomaintainsafety.Cables

incorporatingtheUK13Afusedplug,SchukowithearthingcontactsandULapproved

“groundingtype”areacceptable.Thesemustbepluggedintopoweroutletswhichprovidea

protectiveearth.

8. Referallservicingtoqualiedpersonnel.Servicingisrequiredwhentheapparatushasbeen

damagedinanyway,suchasapowersupplycordorplugisdamaged,liquidhasbeenspilled

orobjectshavefallenintotheapparatus,theapparatushasbeenexposedtoanyrainor

moisture,doesnotoperatenormallyorhasbeendropped.

9. WARNING–Toreducetheriskofreorelectricshock,donotexposethisapparatusto

rainormoisture.Theapparatusshallnotbeexposedtodrippingorsplashingandno

objectslledwithliquids,suchasvases,shallbeplacedontheapparatus.

TO PREVENT ELECTRIC SHOCK DO NOT REMOVE THE

COVER. THERE ARE NO USER SERVICEABLE PARTS

INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL

Ampetronic MLD5 Installation Handbook Page 1

Introduction

TheMLD5Inductionloopdriverhasbeendesignedasahighqualitydualchannelamplierforuse

withmultiplelooporPhasedArrayloopdesigns.

AnArraySystemprovidesasolutionwhereasimplelooparoundtheroomperimeterwillnotwork.

Arraysarethestandardsolutionforbuildingswithmetalstructureorreinforcements,orforcovering

largeareas.Arrayscanalsodramaticallydecreasethe‘spill’ofthemagneticsignaloutsideofthe

room,allowinginductionloopstobeinstalledinadjacentrooms,andprovidinganimprovedlevel

ofcondentiality.Arrayscanalsobeusedtochangethewaytwoloopsinterferewitheachother,

providingwaysofsolvingeventhemostcomplexinstallationproblems.

Dependingonanumberoffactorsregardingtheinstallationoftheloopandtheset-upofthe

ampliertheMLD5canprovidecompliancewithIEC60118-4forperimeterloopareasofupto2x

420m2orphasedarraysystemsupto360m2.

Easeofinstallationandusehavebeenmajorfactorsinthedesign,combinedwithoptimised

performance,andthefreedomfromR.F.I.generation.

TheMLD5stwooutputchannelscanbeconguredwithorwithout90°ofphaseshiftbetween

thetwo,allowingtheuseofarraysystemsortwoseparateloopswiththesamesignaltherefore

doublingtheareacoverage.

TheMLD5hastwobalancedinputs.Thesecanbeconguredformicrophoneorlineinputswith

individuallyselectablephantomandgainboost.

Formorecomplexinstallations,youmayneedancillaryequipmentsuchasmicrophonepre-

amplier(s),adaptor(s)forusewith100Vline,orsignalprocessingunits.SeeAccessoriesor

contactAmpetronicforadvice.

QUICK START

Forthosewhohaveagoodappreciationofloopsystems,thefollowingisaveryquickguideto

settinguptheamplier:Allyouneedisanacpowersource,asignalsourceandaPhasedArray

looppair.See‘DesigningInductionLoops’handbook(supplied)orcontactAmpetronicforadvice.

Installation

a. Turnallcontrolsfullyanti-clockwise.

b. Connectloopcables.

c. Connectsignalinput(s).

d. Connectpower.Seepoints6and7inSAFETYsection.

e. Ifrackmountedremoveallrubberfeetfromunits.DONOTre-tthefeetxingscrewsasthis

maycausedamageandinvalidatethewarranty

Operation

1. SwitchON–check‘earsymbol’ashesduringselftestandilluminatescontinuouslywhen

checksarecomplete.

2. ApplyinputsignalandincreasetheinputcontroluntiltwogreenCOMPRESSIONLEDsare

illuminatedonthepeaksofthesignal.

3. Selectphaseshiftrequired0or90°.

4. AdjusttheCURRENTcontrolsuntiltheCURRENTLEDsilluminatetoachievethedesired

peakcurrents.

5. Repeatstep2foranyotherinputsused.

6. Listentothemagneticeldproducedinsidetheloopareausingareceivingdevice(e.g.

AmpetronicILR3),orexaminetheperformanceinmoredetailwithaeldstrengthmeter.

7. AdjustMLCcontroltoachieveaatfrequencyresponse.

Ampetronic MLD5 Installation HandbookPage 2

CONNECTIONS

Inputs

Outputs

1=TwistedPair,2=QuadCore

Refertotechnicalspecicationsforconnectiondetails

BLOCK DIAGRAM

Ampetronic MLD5 Installation Handbook Page 3

INSTALLATION

Location

Theunitmaybefreestandingor19”rackmountableusingtherack‘ears’supplied.Fittingofthe

‘ears’isachievedbyremovingthethreeforwardmostscrewsonbothsides.Thesamescrews

arethenre-usedtosecurethe‘ears’inplace.(APH2screwdriverwillberequired).For19”rack

mountingthefourrubberfeetmustberemoved.

Thelocationmustprovideadequateventilationfortheunit.

Internalfansprovideforcedventilationusingairventsatthefront(intake)andrear(exhaust)ofthe

unit.Theseventsmustbeunobstructedforsatisfactorycooling.Iftheunitisinstalledinanenclosed

environment,sufcientairowintotheenclosuremustbeprovidedthroughvents,fansorother

means,suchthattheunitsexhaustairisnotrecycledtotheinlet-causingareductioninoutput

currentorOVERHEATLEDtobeilluminated.

ContactAmpetronicforadviceoncoolingrequirementsforyourinstallation.

Tools and Equipment

Smallhandtoolsincludingawirestripperandasmallatbladescrewdriverwillberequired.

AnILR3loopreceiveroramagneticeldstrengthmeterisvitaltocheckthattheloopsystemis

providingthedesiredlevelofperformance.

Apairofstereoheadphoneswitha3.5mmjackplugconnectionisalsousefultomonitortheloop

signal.

System Requirements

Theinductionloopcablesshouldbealreadyinstalledaccordingtothe‘DesigningInductionLoops’

handbook,orasperspecicdesigninstructionsprovidedbyAmpetronic.Asaresult,atarget

currentshouldbeknown,basedonachievingacceptableeldstrengthacrosstheareatobe

covered.

Inordertoachievecorrectoperationitisrecommendedtheloopandfeedresistanceshouldbe

between0.5and3Ω(atDC).ValuesoutsidethismaycausetheLOOPERRORLEDtoilluminate

andtheampliersoutputtobedisabled.Loopandfeedimpedance(at1.6KHz)shouldbelessthan

thevoltagecapabilityofthedriverdividedbythetargetcurrentrequiredtoachieveeldstrength.

ValuesabovethisguremaycausetheCLIPLEDtoilluminate.Seetroubleshootingsectionfor

adviceonhowtocorrectthisandgetyoursystemworking.

The‘DesigningInductionLoops’handbookcontainsmoredetailsonloopandfeedcables.The

correctdesignandpositioningoftheactualloopisvitalforsatisfactorysystemperformance.Ifin

doubtconsultAmpetronicforadvice.

CONNECTION & SET-UP

ItisadvisedthattheloopsystemisinitiallysetupusingalocalaudiosourcesuchasaCDplayer,

whichisnotconnectedintoanyothersystem.Thisavoidsthecomplicationofgroundloopsand

feedbacketc,whilsttheunitissetup.

Thefollowingproceduredescribestheinstallationofastand-aloneMLD5,anddoesnotincorporate

connectionofotherancillaryunitssuchasmicrophonepre-amps,mixingdesks,orsignal

processingunits.

1. Turnallcontrolsfullyanti-clockwise.

2. ConnectthefeedcablesfromtheloopsintotheNL4loop

connectorssuppliedasshown:



Ampetronic MLD5 Installation HandbookPage 4

Note: To avoid unwanted stray magnetic elds the feed cable should be tightly twisted or star-

quad connected.

3. Connectthesignalinputsappropriately:

Microphones:Suitabledynamicorcondensermicrophonewithbalancedcablefeed.Select

phantompowerasrequired.ConnecttoINPUT1andINPUT2(withselectorswitchesinthe

appropriateposition)usinga3-poleXLRplugwiredasperConnectionsdrawing.

Linelevelsignals:FromotheraudioequipmentsuchasPAsystem,mixingdeskorCDplayer.

ConnecttoINPUT1andINPUT2(withselectorswitchesintheappropriateposition)usinga

3-poleXLRplugwiredasperConnectionsdrawing.Youmayuseeitherorbothinputs.

Donotruninputandoutputcablesclosetogether

4. ConnectACpowertotheMLD5.Seepoints6and7inSafetysection.

5. SwitchON.The‘ear’symbolwillashforafewsecondswhilstaninternalself-testisperformed

andtheloopresistanceistested.Ifbothtestsaresuccessful,the‘ear’symbolwillilluminate

continuouslyandtheunitwillbeinanoperationalmode.Ifthe‘ear’symbolcontinuestoash,or

oneorbothLOOPLEDsilluminate,consulttheTroubleshootingsection.

6. Selectoneinputandapplyasuitableaudiosignal(ideallyaCDplayerwithmusicorcontinuous

speechappliedtooneinput,withnoconnectiontotheother).Turntheassociatedinputcontrol

clockwiseuntiltwoCOMPRESSIONLEDsareilluminatedonthepeaksofthesignal.

7. TurnCHACURRENTcontrolclockwiseuntilthetargetcurrentisachieved–asindicatedby

theCHACURRENTLEDs.NotethatconsecutiveLEDsilluminateat3dBintervals.TurnCH

BCURRENTcontrolclockwiseuntilthetargetcurrentisachieved–asindicatedbytheCHB

CURRENTLEDs.HeadphonescanbeusedwiththeMONITORsockettolistendirectlytothe

loopcurrent.NOTE:channelAoutputappearsintheleftheadphoneandchannelBintheright.

Ifhighfrequencyoscillationorlowfrequencyhumisexperienced,consulttheTroubleshooting

section.

8. Theloopsystemshouldnowbeprovidingamagneticeldinsidetheareaoftheloop–usethe

ILR3oreldstrengthmetertoexamineitsperformancewithrespectto:

 a) Magneticeldstrength.Thismayvaryacrossthecoverageduetolayout,metallossand

   loopcurrent.

 b) Frequencyresponse.Metallossestendtoincreasewithfrequency,andmayrequirethe

   adjustmentoftheMLCcontrol.

  Asaresultofthisanalysis,adjusttheCURRENTandsettheMLCtoachievethebestsound

  quality.Thisshouldresultinadequatemagneticeldstrengthandalevelfrequency

  responseinordertosatisfyIEC60118-4.Note:DoNOTadjusttheMLCcontrolwhilst

  listeningtotheMONITORsocketasthiswillnotgiveatrueindicationoftheresponseofthe

  actualloop.

  OncetheCURRENTandMLCcontrolshavebeenadjustedtothecorrectleveltheyshould

  NOTneedre-adjusting.

9. Ifnotalreadydoneso,stepscannowbetakentointegratetheMLD5intoaPA/mixer

arrangementfollowingstandardaudiotechniques.Ifanyunusualeffectsareexperiencedreferto

theTroubleshootingsection.

Note: Ideally, each input signal level should be set up to achieve 6dB (one LED) of

COMPRESSION with the quietest level of input likely to be used. This will maximize the dynamic

range of the system and ensure satisfactory performance.

10.

Repeattheaboveprocedureforeachinputused.Whenadjustingeachinput,makesurethe

signalsareremovedfromtheotherinputs.Thisensuresthatallsignalsaresettoequivalent

loudnessanddrivethecompressorproperly.

Ampetronic MLD5 Installation Handbook Page 5

OVERVIEW

I/O:PowerSwitch.

INPUT 1 & 2:Screwdriveradjustablecontrolswhichsettheleveloftheinputsignals.

AUTOMTIC GAIN CONTROL (AGC) COMPRESSION:Showstheamountofgain

reductionindecibels(dB)thatisappliedtotheinputsignal(s).

METAL LOSS CORRECTOR (MLC):Screwdriveradjustablecontrolwhichcompensates

forthefrequencydependanteffectsofmetalintheloopedenvironment.

OUTPUT CHANNEL WARNING LEDs:‘CLIP’LEDsigniesoutputvoltageisclipping,

‘LOOP’LEDsigniesacablespecicationerrorordamage.Seetroubleshootingfordetails.

OUTPUT CHANNEL CURRENT ADJUSTMENT:Screwdriveradjustablecontrolwhichsets

thelevelofoutputcurrentdeliveredtotheloop.

OUTPUT CHANNEL CURRENT LEDs:Indicatesthepeakcurrentdeliveredtotheloop.

TEMPERATURE WARNING LED: Indicatesthattheinternalheatsinkistoohot.Loop

currentisnotdeliveredtoeitherchannel.Seetoubleshootingfordetails.

MONITOR: 3.5mmjacksocketforusewithstereoheadphonestolistentothesignalbeing

deliveredtotheloop.

POWER INDICATOR LIGHT:Flashescontinuouslywhenamplierhasfailedselftestand

isinsafemode.Seetroubleshootingfordetails.

FRONT VENT:Fanassistedventilationinletwithlter.DONOTcover.

1098

765

321

12 13 14 15 16 17

Ampetronic MLD5 Installation HandbookPage 6

REAR VENT:Fanassistedventilationoutlet.DONOTcover.

LOOP OUTPUT(S):Neutrik‘Speakon’highcurrentconnectionstoloopcable(s).

STATUS:Connectiontorelaycontactsprovidingremotefaultindication.

DC OUTPUT:2-pinconnectionforancillaryunits.

PHASE SHIFT SELECTOR:Selectable90°phaseshiftbetweenoutputs.

XLR INPUTS: SocketforbalancedMICorLINEsignals.

INPUT GAIN BOOST SELECTOR SWITCH: Gainselector(ON=+15dB)

INPUT SELECTOR SWITCH:ModeselectbetweenMICandLINEinputsignals.

INPUT PHANTOM POWER SELECTOR SWITCH

AC POWER: Standard3-poleIEC320connectorcontainingprimaryfusefortheunit.

18 20 21

Ampetronic MLD5 Installation Handbook Page 7

TROUBLESHOOTING

Ear symbol not illuminated

•CheckthatthepowerswitchistoggledtotheON(I)position.

•Checkfusecontinuity.A20mmfuseisincorporatedintotheACPOWERinlet.Itisnecessary

toremovethepowercordbeforeextractingthefuseholder.Testthecontinuityofthefuse

usingamultimeter.Asparefuseisprovidedinthefuseholder.



AnyreplacementfuseMUSTbeofthesameratingandtypeasprintedontherearof

theunit.

Ear symbol flashing continuously

Amplierhasfailedselftestandisinsafemode.Signalwillnotbefedintooneorbothloops.

Switchtheunitoff,removeallconnectionsexcepttheloopandpowerconnections,turnallfront

panelcontrolstominimumandswitchbackon.Iftheproblempersists,contactAmpetronicfor

advice.

COMPRESSION LEDs not illuminating

Checkinputconnections.

Ensurethattheappropriatefrontpanelcontrol(INPUT1orINPUT2)isturnedup.Checkthereis

sufcientsignallevelfortherequiredinput.

CURRENT LEDs not illuminating

Therearemanypossiblecausesforthis:

•ChecktheCOMPRESSIONLEDsareilluminating.

•CheckthattheCURRENTcontrolsareturnedupsufciently.

•ChecktheLOOP,orTEMPLEDsarenotilluminated.

•EnsuretheEarsymbolisilluminatedandnotashing.

•Checkthattheloopcablesareconnected,terminatedcorrectlyandinsertedintotheLOOP

OUTPUTsockets.

•Checktheloopsarenotopencircuit,shortcircuit,orconnectedtoearth(seeinstabilityorhigh

frequencynoisesectionofTroubleshooting)

•Switchtheunitoffandturnbackon.

Note: You can listen to the actual loop signal by using a pair of headphones plugged into the

monitor socket. Channel A = left, channel B = right.

CLIP LED(s)illuminated

Indicatesthattheoutputvoltageisclipping.Occasionallightingofthisindicatorisnormalonpeaks

ofsignal.

•TurndowntheCURRENTcontrolonthechannel(s)inquestiontoavoidcausingtheoutput

voltagetoclip.

•Checktheloopisnotopencircuit,shortcircuit,orconnectedtoearth(seeinstabilityorhigh

frequencynoisesectionofTroubleshooting)

•Checktheloopiswithinspeciedlimits.

TEMP LED illuminated

Indicatesthattheinternalheatsinkistoohot.Loopcurrentisnotdeliveredtoeitherchannel.

•Ensurethattheunitisinstalledinalocationwithsufcientventilation

Ampetronic MLD5 Installation HandbookPage 8

Table des matières

Autres manuels Williams AV Amplificateur

Williams AV

Williams AV Digi-Loop DL107 NET Manuel utilisateur

Williams AV

Williams AV AMPETRONIC MLD9 Manuel du système

Williams AV

Williams AV AMPETRONIC MLD7 Manuel du système

Manuels Amplificateur populaires d'autres marques

ASTRO

ASTRO HVO V40 P Manuel utilisateur

Marantz

Marantz SUPERSCOPE BLA-545 Instructions de montage

NAD

NAD CI980 Manuel utilisateur

Technics

Technics SE-CH770 Manuel utilisateur

Harman Kardon

Harman Kardon HK6300 Manuel utilisateur

NAD

NAD T975 Manuel utilisateur

McIntosh

McIntosh MA6850 Manuel utilisateur

Electro-Harmonix

Electro-Harmonix ENGLISH MUFF’N Manuel utilisateur

Viatron

Viatron Autrix Manuel utilisateur

GME

GME GA9800 Manuel utilisateur

Atlas

Atlas CP700 Manuel utilisateur

Roland

Roland KC-1000 Manuel utilisateur

Pyle

Pyle PFMRA350BW Manuel utilisateur

Advantage

Advantage S-250 Manuel utilisateur

IRT Electronics

IRT Electronics DVA-3007 Manuel utilisateur

Dimavery

Dimavery BA-100 Series Manuel utilisateur

Sony

Sony XM-S400D Manuel utilisateur

Schertler

Schertler ROY X Manuel utilisateur