Martin Audio VIA 5002 User manual

User Guide
VIA
Power Amplifiers
V1.0 Nov2018

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VIAAmplifiers USERGUIDE
VIAAmplifiersUserGuideV1.0 1
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MartinAudioVIAAmplifierUserGuide
Contents
MartinAudioVIAAmplifierUserGuide............................................................................................................................................1
Contents...........................................................................................................................................................................................1
IMPORTANTSAFETYINSTRUCTIONS................................................................................................................................................3
CONSIGNESDESÉCURITÉIMPORTANTES.........................................................................................................................................4
AVERTISSEMENTDESECURITE.....................................................................................................................................................4
AVERTISSEMENTDESECURITE.....................................................................................................................................................4
AVERTISSEMENTDESECURITE.....................................................................................................................................................4
COMPLIANCE....................................................................................................................................................................................5
FORCUSTOMERSINEUROPE........................................................................................................................................................5
FORCUSTOMERSINTHEUSA.......................................................................................................................................................5
FORCUSTOMERSINCANADA.......................................................................................................................................................6
ThanksandUnpacking......................................................................................................................................................................7
UnpackingtheMartinAudioVIASeriesAmplifier........................................................................................................................7
INSTALLATIONINSTRUCTIONS..........................................................................................................................................................7
MechanicalInstallation.................................................................................................................................................................7
ACPowerConnection...................................................................................................................................................................8
PowerConWiringInstructions......................................................................................................................................................9
TheUserGuide...............................................................................................................................................................................12
IntroductionandKeyFeatures.......................................................................................................................................................13
Introduction................................................................................................................................................................................13
KeyFeatures...............................................................................................................................................................................13
AudioConnections..........................................................................................................................................................................14
InputConnections......................................................................................................................................................................14
Usingunbalancedconnections...................................................................................................................................................14
AmplifierOutputConnections....................................................................................................................................................15
PanelLayouts..................................................................................................................................................................................16
VIA2502......................................................................................................................................................................................16
VIA2004......................................................................................................................................................................................17
VIA5002......................................................................................................................................................................................18
VIA5004......................................................................................................................................................................................19
RearPanel.......................................................................................................................................................................................20
VIA2502......................................................................................................................................................................................20
VIA2004......................................................................................................................................................................................21
VIA5002......................................................................................................................................................................................22
VIA5004......................................................................................................................................................................................23

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VIAAmplifiers USERGUIDE
VIAAmplifiersUserGuideV1.0 2
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Protection.......................................................................................................................................................................................24
Turn‐On‐Turn‐Offmuting...........................................................................................................................................................24
Shortcircuitprotection...............................................................................................................................................................24
Thermalprotection.....................................................................................................................................................................24
DCfaultprotection.....................................................................................................................................................................24
Input/Outputprotection...........................................................................................................................................................24
Operation.......................................................................................................................................................................................25
ConnectPowertotheamplifier.................................................................................................................................................25
Connectallinputandoutputcables...........................................................................................................................................25
GainControls..............................................................................................................................................................................25
PowerThesystem......................................................................................................................................................................25
BridgeMode...................................................................................................................................................................................26
ProtectionSystems.........................................................................................................................................................................27
TechnicalSpecifications..................................................................................................................................................................28
General.......................................................................................................................................................................................28
Audio..........................................................................................................................................................................................28
Powersupply..............................................................................................................................................................................28
Physical.......................................................................................................................................................................................28
TechnicalDrawing..........................................................................................................................................................................29
Warranty.........................................................................................................................................................................................30
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VIAAmplifiers USERGUIDE
VIAAmplifiersUserGuideV1.0 3
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IMPORTANTSAFETYINSTRUCTIONS
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1. Readtheseinstructions.
2. Keeptheseinstructions.
3. Heedallwarnings.
4. Followallinstructions.
5. Donotusethisapparatusnearwater.Apparatusshallnotbeexposedtodrippingorsplashingandnoobjectsfilledwith
liquids,suchasvases,shallbeplacedontheapparatus.
6. Cleanonlywithdrycloth.
7. Donotblockanyventilationopenings.Installinaccordancewiththemanufacturer'sinstructions.
8. Donotinstallnearanyheatsourcessuchasradiators,heatregisters,stovesorotherapparatus(includingamplifiers)
thatproduceheat.
9. Donotdefeatthesafetypurposeofthepolarizedorgroundingtypeplug.Apolarizedplughastwobladeswithone
widerthantheother.Agroundingtypeplughadtwobladesandathirdgroundingprong.Thewidebladeorthethird
prongareprovidedforyoursafety.Iftheprovidedplugdoesnotfitintoyouroutlet,consultanelectricianfor
replacementoftheobsoleteoutlet.
10. Protectthepowercablefrombeingwalkedonorpinchedparticularlyatplugs,conveniencereceptaclesandthepoint
wheretheyexitfromtheapparatus.
11. Onlyuseattachments/accessoriesspecifiedbythemanufacturer.
12. Useonlywiththecart,tripod,bracketortablespecifiedbythemanufacturer,orsoldwiththeapparatus.Whenacart
isused,usecautionwhenmovingthecart/apparatuscombinationtoavoidinjuryfromtip‐over.
13. Unplugthisapparatusduringlightningstormsorwhenunusedforlongperiodsoftime.
14. Referallservicingtoqualifiedservicepersonnel.Serviceisrequiredwhentheapparatushasbeendamagedinanyway,
suchaspower‐supplycableorplugdamaged,liquidhasbeenspilledorobjectshavefallenintotheapparatus,this
apparatushasbeenexposedtorainormoisture,doesnotoperatenormally,orhasbeendropped.
SAFETYWARNING
Donotremoveanycovers,loosenanyfixingsorallowitemstoenteranyaperture.
SAFETYWARNING
Therearoftheproductmaygethot.Avoiddirectskincontactduringoperationandforatleast5minutesafterpowerhasbeen
isolated.
SAFETYWARNING
Theproductmustonlybepositionedatfloorlevelwhenoperatedinahorizontalposition.
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VIAAmplifiers USERGUIDE
VIAAmplifiersUserGuideV1.0 4
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CONSIGNESDESÉCURITÉIMPORTANTES

1. Lisezcesinstructions.
2. Conservezcesinstructions.
3. Respecteztouslesavertissements.
4. Suiveztouteslesinstructions.
5. Nepasutilisercetappareilprèsdel'eau.L'appareilnedoitpasêtreexposéàdesgouttesoudeséclaboussuresetaucun
objetcontenantdesliquides,telsquedesvases,nedoitêtreplacésurl'appareil.
6. Nettoyeruniquementavecunchiffonsec.
7. Nepasbloquerlesouverturesdeventilation.Installerconformémentauxinstructionsdufabricant.
8. Nepasinstallerprèsdesourcesdechaleurtellesqueradiateurs,registresdechaleur,poêlesouautresappareils(y
comprislesamplificateurs)quiproduisentdelachaleur.
9. Nesupprimezpasledispositifdesécuritédelafichepolariséeoumiseàlaterre.Unefichepolariséepossèdedeux
lamesdontl'uneestpluslargequel'autre.Uneprisedeterreaeudeuxlamesetunetroisièmebrochedeterre.Lalame
largeoulatroisièmebrochesontfourniespourvotresécurité.Silafichefournienerentrepasdansvotreprise,
consultezunélectricienpourremplacerlapriseobsolète.
10. Protégerlecordond'alimentationsoitécraséoupincé,particulièrementauniveaudesfiches,desprisesetlepointoù
ilssortentdel'appareil.
11. Utilisezuniquementlesaccessoiresspécifiésparlefabricant.
12. Utilisezuniquementlechariot,letrépied,lesupportoulatablespécifiésparlefabricant,ouvenduavecl'appareil.
Quandunchariotestutilisé,soyezprudentlorsquevousdéplacezl'ensemblechariot/appareilafind'évitertoute
blessureencasdechute.
13. Débranchezcetappareilpendantlesoragesoulorsqu'iln'estpasutilisépendantdelonguespériodesdetemps.
14. Adressez‐vousàunpersonnelqualifié.Uneréparationestrequiselorsquel'appareilaétéendommagédequelque
façonquecesoitlecordond'alimentationoulaficheendommagé,duliquideaétérenverséoudesobjetssonttombés
dansl'appareil,cetappareilaétéexposéàlapluieouàl'humidité,nefonctionnepasnormalement,ous'ilesttombé.
15. Ledispositifnedoitpasêtreexposéàdesgouttesoudeséclaboussuresetaucunobjetremplideliquides,telsquedes
vases,doitêtreplacésurl'appareil.
16. Déconnexionpermanentedel'alimentationsecteurdoitêtreatteintensupprimantleconnecteurducordonfournià
l'arrièredel'unité.Ceconnecteurdoitêtrefacilementutilisable.
AVERTISSEMENTDESECURITE
Neretirezpaslescouvercles,nedesserrezpaslesfixationsetnelaissezaucunepièces'introduiredanslesouvertures.
AVERTISSEMENTDESECURITE
Leradiateurarrièredecetappareildevientchaud.Eviteztoutcontactdirectaveclapeaupendantlefonctionnementetaumoins
5minutesaprèslamisehorstensiondel'appareil.
AVERTISSEMENTDESECURITE
Leproduitnedoitêtrepositionnéauniveaudusollorsqu'ilestutiliséenpositionhorizontale.
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VIAAmplifiers USERGUIDE
VIAAmplifiersUserGuideV1.0 5
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COMPLIANCE
FORCUSTOMERSINEUROPE
ThisproductcomplieswithboththeLVD(electricalsafety)73/23/EECandEMC(electromagneticcompatibility)89/336/EEC
directivesissuesbythecommissionoftheEuropeancommunity.
CompliancewiththesedirectivesimpliesconformitywiththefollowingEuropeanstandards:
EN60065Productsafety
EN55032EMCemissions
EN55103‐2EMCimmunity
Thisproductisintendedforthefollowingelectromagneticenvironments:E1,E2;E3&E4.
THISPRODUCTMUSTBEEARTHED.Useonlyaflexiblecableorcordwithagreenandyellowcorewhichmustbeconnectedto
theprotectiveearthingterminalofasuitablemainsplugortheearthingterminaloftheinstallation.Thecordmustbeamaximum
of2mlong,havea2.5mm2CSA,a300/500VratingandcomplywithEN50525‐2‐11/H05W‐F.
THISPRODUCTISDESIGNEDFORPERMANENTINSTALLATION.Itmustbefittedintoa19”rackenclosureandnotoperatedunless
soinstalled.Therackenclosureshouldbeopenatthefrontandbacktoallowfreeventilationandmovementofairthroughthe
product.
FORCUSTOMERSINTHEUSA
ThisproductcomplieswithUL600658thedition.
THISPRODUCTMUSTBEEARTHED.Useonlyaflexiblecableorcordwithagreenorgreen/yellowcorewhichmustbeconnected
totheprotectiveearthingterminalofasuitablemainsplugortheearthingterminaloftheinstallation.Thecordmustbea
maximumof6’long,be14AWG,havearatingSJ,SJT,SJEor300/500VH05W‐FandbemarkedVW‐1.
THISPRODUCTISDESIGNEDFORPERMANENTINSTALLATION.Itmustbefittedintoa19”rackenclosureandnotoperatedunless
soinstalled.Therackenclosureshouldbeopenatthefrontandbacktoallowfreeventilationandmovementofairthroughthe
product.
DECLARATIONOFCONFORMITYWITHFCCRULES
We,MartinAudioLtd.ofCenturyPoint,HalifaxRoad,CressexBusinessPark,HighWycombe,HP123SL,England,declareunder
oursoleresponsibilitythatthisfamilyofdevices,complieswithPart15oftheFCCRules.Operationissubjecttothefollowing
twoconditions:(1)thisdevicemaynotcauseharmfulinterference,and(2)thisdevicemustacceptanyinterferencereceived,
includinginterferencethatmaycauseundesiredoperation.
FEDERALCOMMUNICATIONSCOMMISSIONNOTICE
AnexampleofthisequipmenthasbeentestedandfoundtocomplywiththelimitsforaClassAdigitaldevice,pursuanttoPart
15oftheFCCRules.Theselimitsaredesignedtoprovidereasonableprotectionagainstharmfulinterferenceinaresidentialand
commercialinstallation.
Thisequipmentgenerates,uses,andcanradiateradiofrequencyenergy,andifnotinstalledandusedinaccordancewiththe
instructions,maycauseharmfulinterferencetoradiocommunications.However,thereisnoguaranteethatinterferencewill
notoccurinaparticularinstallation.Ifthisequipmentdoescauseharmfulinterferencetoradioortelevisionreception,which
canbedeterminedbyturningtheequipmentoffandon,theuserisencouragedtotryandcorrecttheinterferencebyoneor
moreofthefollowingmeasures:
Reorientorrelocatethereceivingantenna.
Increasethedistancebetweentheequipmentandthereceiver.
Connecttheequipmenttoanoutletonacircuitdifferentfromthattowhichthereceiverisconnected.
Consultthedealeroranexperiencedradio/TVtechnicianforhelp.
FCCCaution:Anychangesormodificationsnotexpresslyapprovedbythepartyresponsibleforcompliancecouldvoidtheuser’s
authoritytooperatethisequipment.

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VIAAmplifiers USERGUIDE
VIAAmplifiersUserGuideV1.0 6
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…………
FORCUSTOMERSINCANADA
ThisproductcomplieswithCA/CSAC22.2No.60065‐03
CeproduitestconformeavecCA/CSA‐C22.260065:2016Ed.2
THISPRODUCTMUSTBEEARTHED.Useonlyaflexiblecableorcordwithagreenorgreen/yellowcorewhichmustbeconnected
totheprotectiveearthingterminalofasuitablemainsplugortheearthingterminaloftheinstallation.Thecordmustbea
maximumof6’long,be14AWG,havearatingSJ,SJT,SJEor300/500VH05W‐FandbemarkedVW‐1.
CEPRODUITDOITÊTREMISÀLATERRE.Utilisezuniquementuncâblesoupleavecunnoyauvertouvert/jaunequidoitêtre
reliéàlabornedeterredeconnecteurd'alimentationoulabornedeterredel'installation.Lecordondoitêtreunmaximumde
6'(2m)delong,14AWG(2.5mm2CSA),êtreclasséSJ,SJT,SJEou300/500VH05W‐FetêtremarquéeVW‐1
THISPRODUCTISDESIGNEDFORPERMANENTINSTALLATION.Itmustbefittedintoa19”rackenclosureandnotoperatedunless
soinstalled.Therackenclosureshouldbeopenatthefrontandbacktoallowfreeventilationandmovementofairthroughthe
product.
CEPRODUITESTCONÇUPOURUNEINSTALLATIONPERMANENTE.Ildoitêtreinstallédansunboîtierrack19".Lerackdevrait
êtreouvertàl'avantetl'arrièrepourpermettrelaventilationetlemouvementd'airlibreàtraversleproduit.
DECLARATIONOFCONFORMITYWITHCANADIANICES‐003
ThisClassAdigitalapparatuscomplieswithCanadianICES‐003.
CetappareilnumériquedelaclasseAestconformeàlanormeNMB‐003duCanada.
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VIAAmplifiers USERGUIDE
VIAAmplifiersUserGuideV1.0 7
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ThanksandUnpacking
ThankyouforchoosingaMartinAudioVIASeriesAdvancedAmplifierforyourapplication.Pleasesparealittletimetostudythe
contentsofthismanual,sothatyouobtainthebestpossibleperformancefromthisunit.
AllMartinAudioproductsarecarefullyengineeredforworld‐classperformanceandreliability.
IfyouwouldlikefurtherinformationaboutthisoranyotherMartinAudioproduct,pleasecontactus.Welookforwardtohelping
youinthenearfuture.
UnpackingtheMartinAudioVIASeriesAmplifier
Afterunpackingtheunitpleasecheckcarefullyfordamage.Ifdamageisfound,pleasenotifythecarrierconcernedatonce.You,
theconsignee,mustinstigateanyclaim.Pleaseretainallpackagingincaseoffuturere‐shipment.
INSTALLATIONINSTRUCTIONS
MechanicalInstallation


TheVIASeriesAmplifiersaredesignedtobemountedinastandard19”rackenclosure.Allmodelshaveidenticalmechanical
dimensions.
Wheretheamplifierisusedinafixedinstallation,aslongasthebottomunitissupportedandtherearenogapsbetweenunits,
itisacceptabletouseonlythefrontpanel19”rackholeswhenfittingitinastandardrackenclosure.Iftheamplifierismounted
inamobilerackitisimportantthattherearissupportedwitharearrackmountingkit(partnumberIKRACK).Damagecaused
byinsufficientsupportisnotcoveredbythewarranty.
Topreventdamagetothefrontpanelitisrecommendedthatplasticcupsorwashersarefittedunderneaththerackmounting
boltheads.
ItispossibletomountmultipleVIAamplifierswithoutventilationgapsbetweenthembutitisessentialthatanunobstructed
flowofcleanairisavailablefromthefrontoftheunittotherear.Itisimportantthatneithertheairintakesonthefrontofthe
unitortheexhaustventsatthereararecovered.Stepsmustbetakentoensurethathotairdoesnotcontinuallycirculate
throughtheamplifiersfromthebackoftheracktothefront.

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VIAAmplifiers USERGUIDE
VIAAmplifiersUserGuideV1.0 8
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Theamplifiershouldneverbeexposedtorainormoistureduringoperationorstorage.Iftheunitdoescomeintocontactwith
moisture,removetheACpowercableimmediatelyandleaveitinadryandwarmlocationtodryout.
Notethatwhenanyequipmentistakenfromacoldlocationintoahothumidone,condensationmayoccurinsidethedevice.
AlwaysallowtimefortheequipmenttoattainthesametemperatureasitssurroundingenvironmentbeforeconnectingtheAC
powercable.
IMPORTANT
Itistheresponsibilityoftheusertoensurethatdirt,liquidsandvapourfromoil‐basedtheatricalsmoke,hazeorfogmachinesis
notingestedbytheamplifier.Damagesocausedisnotcoveredbythemanufacturer’swarranty.
ACPowerConnection
TheamplifierutilisesaNeutrikPowerCon™typelockingACpowerconnector.UseonlyanACpowercablewithacorrectly
terminatedPowerCon™typeconnectortomaketheconnectiontothemainspowersupply.Theseconnectorsoperatein
identicalfashiontoaNeutrikSpeakonloudspeakerconnector(butareuniquelykeyedmakingitimpossibletoinsertamainsplug
intoaloudspeakersocketandvisaversa).Inserttheplugwiththelatchatapproximately‐45fromthevertical(the10.00pm
position),rotatetheconnectorclockwiseuntilyouheara‘click’indicatingthatthelatchhasoperated.Checkthattheconnector
issecure.Toremove,griptheconnectandpullbackthelatchwithyourthumb,rotatetheconnectoranticlockwiseandpullto
remove.
Theamplifiersaredesignedtooperateon50/60HzACpower.Thepowersupplysectionsautomaticallyconfigurethemselves
foreither100Vor230Vnominalvoltageatturnon.Theamplifierswilloperateoveranextendedrangeofsupplyvoltages(please
refertothetechnicalspecifications).
Notethatwhilsttheamplifierwilloperatecorrectlyatvoltagesindicated,thespecifiedoutputpowerwillonlybeachievedwhen
operatingwiththestatednominalvoltages.
IMPORTANTSAFETYINSTRUCTION:
ThepowerCONsystemiscertifiedasconnectorwithoutbreakingcapacityaccordingIEC61984/VDE0627.
Inthisstandardthetermconnector(withoutbreakingcapacity)referstocomponentswhichinnormalusearenottobeengaged
ordisengagedwhenunderloadorlive.
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VIAAmplifiers USERGUIDE
VIAAmplifiersUserGuideV1.0 9
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PowerConWiringInstructions

1. Placethebushing(1)andthechuck(2)overthecable

Whitechuck(a):6.0–11.0mm(0.236–0.433”)
Blackchuck(b):9.5–15.0mm(0.374–0.59”)
VDE:9.5–14.0mm(0.374–0.551”)
2. Preparethecableasshown

CableO.D:6.0–15.0mm(0.236–0.59”)
Wiresize:2.5mm
2
(AWG14)

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VIAAmplifiers USERGUIDE
VIAAmplifiersUserGuideV1.0 10
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3. InsertthewireintotheterminalsandfastentheclampingdevicewithaPOZIDRIV®#1,max.Torque0.5Nm(0.37lb‐
ft).
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
4. Slidetheinsertandthechuck(1)intothehousing(2).

Important:
(a)Alignthechuckbypositioningthenoseintotherecess.
(b)Payattentiontotheguidingkeyway!
5. Fastenbushingbymeansofaforkwrench7/8”(SW22)min.Torque2.5Nm(1.8lb‐ft).

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VIAAmplifiers USERGUIDE
VIAAmplifiersUserGuideV1.0 11
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OPTION:UsetheNeutrikhandtoolArt.No.HTFACtotightenthebushing.
6. FinishedPowerCon


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VIAAmplifiers USERGUIDE
VIAAmplifiersUserGuideV1.0 12
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TheUserGuide
ThisusermanualgivesaprogressivelymoredetaileddescriptionofthefunctionsoftheMartinAudioVIAAmplifiers.Adetailed
explanationofthefrontandrearpanelcontrolsandindicatorsiscontainedinthenextsection.
Thefinalsectiondescribeseachindividualfunctionorfeaturewithannotatedimagesexplainingitsuse.
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VIAAmplifiers USERGUIDE
VIAAmplifiersUserGuideV1.0 13
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IntroductionandKeyFeatures
Introduction
TheMartinAudioVIASeriesAmplifiersrepresentscurrentstate‐of‐the‐arttechnologyinseveralareas.integratinglight‐weight
powersupplies,highpowersonicallytransparentclassDamplifiers.
KeyFeatures
Two/FourchannelsofsonicallypureClassDamplification
EachsectioniscompletelyindependentwithdiscretePSU,amplifier
MartinAudiominimalsignalpathdesign
ClassleadingsonicperformanceachievedbytheuseofstateoftheartAmplifiertechnologies.
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VIAAmplifiers USERGUIDE
VIAAmplifiersUserGuideV1.0 14
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AudioConnections
InputConnections
ForeachinputchannelthereisafemaleXLRconnectorforanalogueinputs.TheHOT,+or‘inphase’connectionshouldbemade
topin2oftheXLRconnector.
TheCOLD,‐or‘outofphase’connectionshouldbemadetopin3oftheXLRconnector.
Pin1oftheXLRconnectorsisinternallyconnectedtothechassis.TheshieldoftheinputcableshouldalwaysbeconnectedPin
1oftheXLRtoensurethatEMCperformanceandregulationsaremet.
3
Usingunbalancedconnections
Pleasenotethattheuseofunbalancedconnectionsisnotrecommended,howeverwhenconnectingtheamplifiertoan
unbalancedaudiosource,thesignalconductorshouldbeconnectedtoXLRpin2.The‘Cold’conductororcablescreenshouldbe
connectedtoXLRpin1withashortconnectionmadebetweenpin1andpin3.
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VIAAmplifiers USERGUIDE
VIAAmplifiersUserGuideV1.0 15
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…………
AmplifierOutputConnections
TheVIAamplifiersarefittedwithoneSpeakon™connectorperamplifierchannel.Theappropriateconductorterminationsare
shownbelowandontherearpaneloftheunit.
Amplifieroutputconnections–channels2&4
2‐
Additionally,channel2outputisduplicatedontheSpeakon™connectorforamplifierchannel1forBi‐Ampwiring.Similarly,the
channel4outputisduplicatedontheSpeakon™connectorforamplifierchannel3onfourchannelmodels.Thiscanbeuseful
formakingaconnectiontotwoloudspeakerswithone4‐corecable(i.e.Bi‐Amp).
Amplifieroutputconnections–Outputs1and3

Inaddition,thechannel1orchannel3connectorcanalsobeusedifthepairofamplifierchannelsisbeingoperatedinbridged
mode.
Amplifieroutputconnections–BridgeVIA2502andVIA5004only

Morethanonespeakercanbeconnectedtoeachchannelprovidedthetotalimpedanceperchannelisnotlessthan2ohmsfor
theVIA2502andVIA5004,or4ohmsfortheVIA5002andVIA2004.InbridgedmodefortheVIA2502andVIA5004theminimum
totalimpedanceshouldnotbelessthan4ohms.

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VIAAmplifiers USERGUIDE
VIAAmplifiersUserGuideV1.0 16
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…………
PanelLayouts
VIA2502
1.InputSignalIndicators‐Twoindicatorsshow“Sig”,and“‐6dB”forallinputs.
ThesignalpresentIndicatorsoperateatapproximately–40dBu.
2.GainControl‐Continuousadjustmentfrom0dB(32dBofgain)tozero(‐)
3.BridgeModeIndicator‐ThiswillilluminatewhenthechannelpairisinBridge
mode.Thecontrolsfortheleftchannelofthepairwilldeterminethesettings.
SeeBridgeMode
4.ClipIndicator‐ TheClipIndicatorswarntheuserofinputoverloadand
operateat1dBbeforeclip.
5.Protectindicator‐ TheVIAamplifiershavesophisticatedprotectionand
monitoringsystemswhichkeeptheamplifierwithinitssafeoperatingwindow
wheneverpossible.Thisindicatorlightswhentheprotectionsystemsare
activeinanyway.
6.PowerIndicator‐ ThePowerSwitchisassociatedwithaPOWERindicator.
Thisredindicatorislitwhenpowerisapplied,andthepowerswitchisinthe
ONposition.
7.PowerSwitch‐Appliesmainspowertothedevice.
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 
 
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VIAAmplifiers USERGUIDE
VIAAmplifiersUserGuideV1.0 17

…………
VIA2004
1.GainControl‐Continuousadjustmentfrom0dBattenuation(32dBofgain)
tozero(‐)Input
2.SignalIndicators‐Twoindicatorsshow“Sig”,and“‐6dB”forallinputs.The
signalpresentIndicatorsoperateatapproximately–40dBu.
3.ClipIndicator‐ TheClipIndicatorswarntheuserofinputoverloadand
operateat1dBbeforeclip.
4.Protectindicator‐ TheVIAamplifiershavesophisticatedprotectionand
monitoringsystemswhichkeeptheamplifierwithinitssafeoperatingwindow
wheneverpossible.Thisindicatorlightswhentheprotectionsystemsare
activeinanyway.
5.PowerIndicator‐ ThePowerSwitchisassociatedwithaPOWERindicator.
Thisredindicatorislitwhenpowerisapplied,andthepowerswitchisinthe
ONposition.
6.PowerSwitch‐Appliesmainspowertothedevice.
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 
 

VIAAmplifiers USERGUIDE
VIAAmplifiersUserGuideV1.0 18

…………
VIA5002
1.GainControl‐Continuousadjustmentfrom0dBattenuation(32dBofgain)
tozero(‐)Input
2.SignalIndicators‐Twoindicatorsshow“Sig”,and“‐6dB”forallinputs.The
signalpresentIndicatorsoperateatapproximately–40dBu.
3.ClipIndicator‐ TheClipIndicatorswarntheuserofinputoverloadand
operateat1dBbeforeclip.
4.Protectindicator‐ TheVIAamplifiershavesophisticatedprotectionand
monitoringsystemswhichkeeptheamplifierwithinitssafeoperatingwindow
wheneverpossible.Thisindicatorlightswhentheprotectionsystemsare
activeinanyway.
5.PowerIndicator‐ ThePowerSwitchisassociatedwithaPOWERindicator.
Thisredindicatorislitwhenpowerisapplied,andthepowerswitchisinthe
ONposition.
6.PowerSwitch‐Appliesmainspowertothedevice.

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
 
 

VIAAmplifiers USERGUIDE
VIAAmplifiersUserGuideV1.0 19

…………
VIA5004
1.InputSignalIndicators‐Twoindicatorsshow“Sig”,and“‐6dB”forallinputs.
ThesignalpresentIndicatorsoperateatapproximately–40dBu.
2.GainControl‐Continuousadjustmentfrom0dB(32dBofgain)tozero(‐)
3.BridgeModeIndicator‐ThiswillilluminatewhenthechannelpairisinBridge
mode.Thecontrolsfortheleftchannelofthepairwilldeterminethesettings.
SeeBridgeMode
4.ClipIndicator‐ TheClipIndicatorswarntheuserofinputoverloadand
operateat1dBbeforeclip.
5.Protectindicator‐ TheVIAamplifiershavesophisticatedprotectionand
monitoringsystemswhichkeeptheamplifierwithinitssafeoperatingwindow
wheneverpossible.Thisindicatorlightswhentheprotectionsystemsare
activeinanyway.
6.PowerIndicator‐ ThePowerSwitchisassociatedwithaPOWERindicator.
Thisredindicatorislitwhenpowerisapplied,andthepowerswitchisinthe
ONposition.
7.PowerSwitch‐Appliesmainspowertothedevice.

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