Wharfedale Pro WLA-25 User manual

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USER MANUAL

WLA-25

WLA-25SUB

WLA-25SUB MKII

WLA-25 FLY FRAMES

Contents

IMPORTANT WARNINGS & SAFETY INSTRUCTIONS ..................................................................................................... 1

INTRODUCTION ................................................................................................................................................................. 2

FEATURES .......................................................................................................................................................................... 3

SPLAY ANGLES .................................................................................................................................................................. 4

LEVEL TAPERING .............................................................................................................................................................. 4

FLEXIBLE ARRAYS ............................................................................................................................................................ 5

OPTIMISED GROUND STACKING ..................................................................................................................................... 6

AIR ABSORPTION .............................................................................................................................................................. 6

AIR ABSORPTION .............................................................................................................................................................. 7

WLA-25 / WLA-25SUB / WLA-25 Common Fly Frames...................................................................................................... 8

DIMENSIONAL DRAWINGS-WLA-25 ................................................................................................................................. 9

DIMENSIONAL DRAWINGS - WLA-25 STAND FRAME .................................................................................................. 10

DIMENSIONAL DRAWINGS-WLA-25SUB ........................................................................................................................ 11

DIMENSIONAL DRAWINGS-WLA-25 FLY FRAME .......................................................................................................... 12

DIMENSIONAL DRAWINGS-WLA-25SUB FLY FRAME ................................................................................................... 13

DIMENSIONAL DRAWINGS-WLA-25 COMMON FLY FRAME ........................................................................................ 14

SPECIFICATION ............................................................................................................................................................... 15

WHARFEDALE PRO LIMITED WARRANTY .................................................................................................................... 17

IMPORTANT WARNINGS & SAFETY INSTRUCTIONS

• Readtheseinstructions

• Followtheseinstructions

• Keeptheseinstructionsforfuturereference

• Heedallwarnings

• Donotusethissystemnearmoistureorwater

• Cleanonlywithadrycloth

• InstallinaccordancewiththeseWharfedaleProoperatinginstructions

• Followthemanufacturer’soperatinginstructionsforallperipheraldevicessuchasampliersandprocessors

• Donotinstallnearheatsourcessuchasradiators,heatregisters,stovesoranyotherapparatusthatproducesheat(for

examplelightingsystemsandampliers)

• UseonlyaccessoriesspeciedorsuppliedbyWharfedalePro

• Donotuseshieldedmicrophone/instrument cablestoconnectampliersandspeakers,useonlyapprovedspeaker

cableswithproperconnectors

• Usecautionwithplacementandoperationofthisspeakersystem,permanenthearingdamagecanbecausedby

prolongedexposuretoexcessivesoundpressurelevels

• Referallservicingtoqualiedprofessionals.Servicingisrequiredwhentheloudspeakerhasbeendamagedinany

way,suchasimpactdamage,liquidingressorforeignobjectdamage.Inadditiontheloudspeakershouldbereferred

toqualiedservicepersonnelifthereisanykindofmalfunction.

Rigging,suspendingandmountingshouldonlybeattemptedbyexperiencequaliedprofessionals.Incorrectusagecan

resultindamagetoequipmentandproperty,injuryandevendeath.Undernocircumstancesshouldyouattempttorig,

suspendormountthesespeakersunlessyouarefullyqualiedandcertiedtodosobyrelevantlocal,stateandnational

authorities.Ifyouarenotproperlyqualiedordonotknowofpertinentregulationsconsultqualiedpersonnelforadvice.

Consultastructuralengineerbeforesuspendingaspeakersystemandensurethatthetotalweightofyoursystemcan

beheldbythetrussormountingsurface.

Inspectallmountinghardwarebeforeyourlinearrayisflown.Ifthereisanydamageordistortiontoanymounting

hardwaredonotythearrayuntil anydamagedhardwareisrepairedorreplaced.OnlyuseWharfedaleProsupplied

QuickreleasePins,contactyourWharfedaleProDistributorifanyquickreleasepinsarelostordamaged.

Designedforthemostdemandingconcertandinstallationaudioprofessionals,theWLA-25systemsetsnewstandards

forastonishingacousticalperformanceinacompactsize.

Linearraysareincreasinglyemployedinawiderrangeofvenuesandapplications.Frequentlythesevenueshaveheight

orsightlinerestrictionsthatlimittheplacementandsizeofthearray.Risingfuelcostsareputtingpressureontouring

systemproviderstodownsizetheirtransportationrequirements.Atthesametime,clientandaudienceexpectationsfor

audioperformancehasneverbeenhigher.Tomeettheseneeds,WharfedaleProembarkedonaprogramtodevelopthe

mostcompact,highestoutputlinearrayspeakersystemavailable.

EachWLA-25elementusesapairofhigh-power,5”low-frequencydrivers.Bothcoverlowfrequencieswhileonlyone

extendsintothemidrange,thusmaintaininghorizontaldispersioncontrolatacrossover.Highfrequenciesarehandled

byapremium1.75”diaphragm,neodymiumcompressiondriver,100°x10°multipleaperturediffractionwaveguide.This

createsawidecoveragewithasuperbstereoimageandallowsformorediverseplacement.

Thewaveguideexitextendsnearlytothetopandbottomoftheenclosuretocreateacontinuousacousticalsourcewith

minimaldiscontinuitiesbetweenadjacentelementsresultingingreatlyreduceddestructiveinteraction.

Premiummaterialsareusedthroughoutthesystem.TheenclosureisconstructedofBalticbirchplywoodandcoated

inanenvironmentallyfriendly,waterborne polymernishthatiseldrepairable.Tokeeptheweighttoaminimumand

preventrust,suspensionttingsaremadeofaluminium.

Anelegantlysimple3-pointsuspensionsystemcombinedwithlightweight,compactsizeandexcellenthandling

ergonomicsmeanthata onepersoncrewcaneasilydeployanarray.With achoiceof3differentflyframe options

suspensioniseasy,tidyandsafe.TheWLA-25systemisequallyathomeintheairorground-stacked.

INTRODUCTION

WLA-25

Highsensitivity,FullHornLoadeddesign

120WRMS/240WProgram/480WPeakPowerHandling

Dual5”woofer,1.5”voicecoils

1x1”exitHFcompressiondriver

1.7“Titaniumdiaphragm,neodymiummagnetcompressiondriver

100°x10°degreeconstant-directivityhorn

NominalPassiveCrossoverNetwork

Fronthingedriggingsystem

Captiverigginghardwarewithtetheredquickreleasepins

Comprehensiveadjustablesplayangles

Integral,sideplateadjustableriggingsystem,verticalsplayadjustablein1°incrementsfrom0°-10°

TrapezoidBalticbirchplywoodenclosure

2xParallelSpeakonInputs

Blackorwhitepaintnish

WLA-25SUB

700WRMS/1400WProgram/2800WPeakpowerhandling

Roadreadysubwoofersystem

Dual10”woofers,2.5”voicecoil

NominalImpedance4Ohm

Stronginternalbracingpreventsbasslossanddistortionfromenclosure,vibrationandresonance

2xParallelSpeakonInputs

Blackorwhitepaintnish

WLA-25SUB MKII

700WRMS/1400WProgram/2800WPeakpowerhandling

Roadreadysubwoofersystem

Dual10”woofers,2.5”voicecoil

NominalImpedance4Ohm

Stronginternalbracingpreventsbasslossanddistortionfromenclosure,vibrationandresonance

2xParallelSpeakonInputs

Blackorwhitepaintnish

M20threadedpolesocketforintegrationintoapoleandWLA-25StandFramesystem.

FEATURES

TheWLAcanbeconfiguredwithseveraldifferentsplayangles.Thesplayanglesdeterminetheamountofoverlap

betweentheindividualunits.Thisisusedtodeterminetheamountofsummationor‘throw’forseparatesectionsof

thearray.Asthesplayanglebetweenboxesincreasesthesummationdecreasesbutthespectralvariancedueto

interactionsbetweentheelementsisalsodecreased.

Formanyvenuesagoodcompromisebetweenthrowandspectralvariancecanbereachedbyvaryingthesplayangle

acrossthelengthofthearray.Byvaryingtheangularseparationalongthelengthofthearray,abalancecanbemetfor

therequiredcoverage.Smallersplayanglesprovidehighersummationtocovermoredistantseatingandbleachers.

Largersplayanglesprovidelowersummationwithreducedspectralvarianceforcloseseating.Usedcorrectlythiscan

provideevencoverageoverlongdistances.

EachgroupofloudspeakerswithdifferentsplayanglewillrequireaseparatechannelofamplicationanddifferentEQ

settings.Thisisduetothedifferentsummationeffectsbydifferingsplayangles.

SPLAY ANGLES

Taperingthelevelofenclosureshasabeamsteeringeffectwhichcanbeusedintheconjunctionwithangularseparation

betweenelements.Thebeamwillbesteeredawayfromthe‘on-axis’centrelineofarraytowardthecabsbeingdriven

atthehighestlevel.Theextentofthebeamsteeringeffectdependsonthelengthofthearrayandtheleveldifference

betweenthetopandthebottomofthearray.Thistechniqueallowsyoutofurthertailortheverticalcoveragetodifferently

shapedvenues,reducingthelevelvariancebetweenthefrontandrearofthevenue.

Ideallythelevelofeachenclosureistaperedgradually(e.g.0.5dBor1dBperelement).Thismeansyouwillrequirean

amplierchannelperelement.Groupsofelementscanbetaperedinpairsormore,althoughamoregradualtaperwill

giveyousmootherverticalpatterncontrol.

LEVEL TAPERING

FLEXIBLE ARRAYS

ArrayscanbeassembledusingonlyWLA-25linearraymodulesorwithWLA-25SUBSubwoofersatthetopofthearray.

TheWLA-25SUBFlyFrameallowsforaWLA-25SUBsubwoofertobeusedatthetopofthearray.TheWLA-25SUBFly

Framesupportsupto12xWLA-25modulesand1xWLA-25SUBwithasafetyfactorof12.

ArrayscanbeassembledusingonlyWLA-25linearraymodules.ThesmallerWLA-25FlyFramesupportsupto12x

WLA-25moduleswithasafetyfactorof12.

TheWLA-25CommonFlyFrameallowsforeitherWLA-25elementsorWLA-25SUBelementstobeown.

Thehighfrequencyperformanceofthemediumandlongthrowsectionsofthelinearraywillbelimitedbyairabsorption.

Asthedistancefromthesourceincreases,themidandhighfrequencieswillbereduced.Theamountofabsorptionata

givenfrequencyisfunctionofpressure,temperatureandrelativehumidity.Byfarthemostimportantfactoristherelative

humidity,althoughtemperaturedoeshaveasignicanteffect.

Toachieveminimalspectralvarianceacrossthecoverageofthearray,thegroupsofloudspeakerscoveringthemiddleto

rearofthevenuewillrequireequalizationtocompensateforthiseffect.Airabsorptionisdifculttopredictwithanygreat

accuracy,andinanycasetherelativehumidityofthevenueislikelytochangewhentheaudiencearriveortheweather

changes.Itisimportantthatthevenueismonitoredduringtheeventastheequalizationappliedduringthedesignstage

withanemptyvenuemaynotbesuitableduringtheevent.

Asageneralguide,boostabove8kHzforalongthrowgroupofloudspeakersand12kHzforamediumthrowgroupof

loudspeakers.

ThechartoverleafshowsattenuationindB/mforagivenfrequencyandhumidity.Itisimportanttonotethattheeffectsof

airattenuationarelinear,unlikethelevelofattenuationfromdistancefromtheinversesquarelaw.Forexample,at100m

asourcewouldbe40dBdowncomparedtoit’sSPLat1m.Assuming50%relativehumidityand20°thelevelat10kHz

willbeanadditional16dBbelowthis(approximately56dBdown).

AIR ABSORPTION

OPTIMISED GROUND STACKING

WLA-25riggingdoublesupasanoptimizedgroundstackingsystem,usingtheWLA-25SUBsubwooferasabase.Arrays

ofWLA-25linearrayelementscanbeaimeddownwardsbyasmuchas10°tocoveraudienceareasclosetoastage,as

wellasupwardbyasmuchas10°inordertobettercoverdistantbalconyseatingareas.

AIR ABSORPTION

TheWLA-25hasinternalcrossovers.TheinternalcrossoveroftheWLA-25loudspeakerdividestheaudiosignalintothe

separatefrequencyrangesforeachdriver.

TheWLA-25SUBsubwoofersdonothaveinternalcrossovers.Thisfunctionmustbesuppliedbyexternalelectronic

devicessuchastheWharfedaleProVersadriveseriesorLMX-204.

WLA-25 / WLA-25SUB / WLA-25 Common Fly Frames

TheWLA-25/WLA-25SUBandtheWLA-25CommonFlyFramesarecertiedtoholdatotalweight(includingthirdparty

hardware)of280kg.Upto12WLA-251WLA-25SUBelementscanbeownwithasafetyfactorof12.

TheWLA-25flyframeiscertifiedtoholdatotalweight(includingthirdpartyhardware)of230kg.Upto12WLA-25

elementscanbeownwithasafetyfactorof12.

OnlyuseWharfedaleProyframes.Ensurethatonlyrated,certiedhardwaresuchastumbuckles,shacklesandchains

areused.

Ensurethatalltruss,structuresandyinghardwarearecapableofsuspendingtheentirearray,plusyinghardware,toa

suitablesafetyfactor.

Rigging,suspendingandmountingshouldonlybeattemptedbyexperiencedqualiedprofessionals.Incorrectusagecan

resultindamagetoequipmentandproperty,injuryandevendeath.Undernocircumstancesshouldyouattempttorig,

suspendormountthesespeakersunlessyouarefullyqualiedordonotknowofpertinentregulationsconsultqualied

personelforadvice.Consultastructuralengineerbeforesuspendingaspeakersystemandensurethatthetotalweight

ofyoursystemcanbeheldbythetrussormountingsurface.

Inspectallmountinghardwarebeforeyourlinearrayisflown.Ifthereisanydamageordistortiontoanymounting

hardwaredonotythearrayuntil anydamagedhardwareisrepairedorreplaced.OnlyuseWharfedaleProsupplied

quickreleasepinsandcontactyourWharfedaleProdistributorifanyquickreleasepinsarelostordamaged.

DIMENSIONAL DRAWINGS-WLA-25

DIMENSIONAL DRAWINGS - WLA-25 STAND FRAME

DIMENSIONAL DRAWINGS-WLA-25SUB

DIMENSIONAL DRAWINGS-WLA-25 FLY FRAME

TheWLA-25flyframeiscertifiedtoholdatotalweight(includingthirdpartyhardware)of230kg.Upto12WLA-25

elementscanbeownwithasafetyfactorof12.

543.0

462.5

50.0

95.0

DIMENSIONAL DRAWINGS-WLA-25SUB FLY FRAME

543.0

650.0

50.0

95.0

TheWLA-25/WLA-25SUByframeiscertiedtoholdatotalweight(includingthirdpartyhardware)of280kg.Upto12

WLA-25and1WLA-25SUBelementscanbeownwithasafetyfactorof12.

DIMENSIONAL DRAWINGS-WLA-25 COMMON FLY FRAME

SPECIFICATION

Model Name WLA-25 WLA-25SUB

SystemType Passive Passive

Conguration two-way Subwoofer

FrequencyResponse(+/-3dB) 108-18kHz 56-1.5kHz

FrequencyRange(-10dB) 108-20kHz 56-2.0kHz

Sensitivity2.83v/1m HF:108dB/LF:100dB 107dB

CalculatedMaximumSPL@1m HF:135dB/LF:127dB 141dB

SystemRatedImpedance 16Ω 4Ω

LowFrequencyTransducer

LFSize(mm/inches) 130mm / 5'' 254mm / 10''

LFVoice-CoilSize(mm/inches) 35.0mm / 1.4'' 65.5mm / 2.5''

LFMagnetMaterial ferrite ferrite

LFFrameMaterial aluminium aluminium

RatedImpedance 16Ω 8Ω

LFPowerre:AES2-2012 2X60W 2X350W

High Frequency Transducer

HFDriverType: CompressionDriver

CoilSize(mm/inches) 44mm / 1.75''

ExitSize(mm/inches) 1"

HFMagnetMaterial NdFeB

DiaphragmMaterial Titanium

RatedImpedance 16Ω

HFPowerre:AES2-2012 40W

WaveguideType square

NominalCoverage(HxV) 100°x10°

Power

SystemContinuousPower(w) HF:40W/LF:120W 700W

SystemProgrammePower(w) HF:80W/LF:240W 1400W

SystemPeakPower(w) HF:160W/LF:480W 2800W

Crossoverfrequency 3.7kHz

InputConnector 2xSpeakon 2xSpeakon

Rigging Intergralsideplateadjustablerigging0°-10° Integral,non-adjustable

polemount NO NO

handles yes yes

Enclosure

cabinettype Trapezoid square

EnclosureMaterialandnish 15mm,18mmplywood 15mm,18mmplywood

ColourOptions blackorwhitepaint blackorwhitepaint

GrilleMaterial&Finish steel steel

Dimensions - Unpacked (mm / inches):

Height 536mm/21.1" 536mm/21.1"

Width 363mm/14.3" 400mm/15.7"

Depth 164.5mm/6.45" 550mm/21.7"

Dimensions - Packed (mm / inches):

Height 606mm/23.9" 610mm/24.0"

Width 430mm/16.9" 470mm/18.5"

Depth 235mm/9.3" 596mm/23.5"

Weight

NetWeight(kg/lbs) 13kg/28.6lbs 37kg/81.4lbs

GrossWeight(kg/lbs) 15kg/33lbs 39.5kg/86.9lbs

SPECIFICATION

Model Name WLA-25SUB MKII

SystemType Passive

Conguration Subwoofer

FrequencyResponse(+/-3dB) 56-1.5kHz

FrequencyRange(-10dB) 56-2.0kHz

Sensitivity2.83v/1m 107dB

CalculatedMaximumSPL@1m 141dB

SystemRatedImpedance 4Ω

LowFrequencyTransducer

LFSize(mm/inches) 254mm / 10''

LFVoice-CoilSize(mm/inches) 65.5mm / 2.5''

LFMagnetMaterial ferrite

LFFrameMaterial aluminium

RatedImpedance 8Ω

LFPowerre:AES2-2012 2X350W

High Frequency Transducer

HFDriverType:

CoilSize(mm/inches)

ExitSize(mm/inches)

HFMagnetMaterial

DiaphragmMaterial

RatedImpedance

HFPowerre:AES2-2012

WaveguideType

NominalCoverage(HxV)

Power

SystemContinuousPower(w) 700W

SystemProgrammePower(w) 1400W

SystemPeakPower(w) 2800W

Crossoverfrequency

InputConnector 2xSpeakon

Rigging Integral,non-adjustable

polemount M20threaded

handles yes

Enclosure

cabinettype square

EnclosureMaterialandnish 15mm,18mmplywood

ColourOptions blackorwhitepaint

GrilleMaterial&Finish steel

Dimensions - Unpacked (mm / inches):

Height 536mm/21.1"

Width 400mm/15.7"

Depth 550mm/21.7"

Dimensions - Packed (mm / inches):

Height 610mm/24.0"

Width 470mm/18.5"

Depth 596mm/23.5"

Weight

NetWeight(kg/lbs) 37kg/81.4lbs

GrossWeight(kg/lbs) 39.5kg/86.9lbs

WharfedaleProproductsarewarrantedofmanufacturingormaterialdefectsforaperiodofone

yearfromtheoriginaldateofpurchase.Intheeventofmalfunction,contactyourauthorized

WharfedaleProdealerordistributorforinformation.

*Beaware thatwarrantydetailsmaydifferfromcountry tocountry.Contactyourdealeror

distributorforinformation.Thesetermsdonotinfringeyourstatutoryrights.

WHARFEDALE PRO LIMITED WARRANTY

WharfedaleProfessional

IAGHouse13/14GlebeRoadHuntingdonCambridgeshirePE297DLUK

www.wharfedalepro.com

WharfedaleProfessionalreservestherighttoalterorimprovespecicationswithoutnotice.

Wharfedale Pro WLA-25, WLA-25SUB MKII User manual

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