Wharfedale Pro WLA25SF User manual

www.wharfedalepro.com
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

1
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.

2
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

3
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

4
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

5
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.

6
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.

7
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.

8
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.

9
DIMENSIONAL DRAWINGS-WLA-25

10
DIMENSIONAL DRAWINGS - WLA-25 STAND FRAME

11
DIMENSIONAL DRAWINGS-WLA-25SUB

12
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

13
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.

14
DIMENSIONAL DRAWINGS-WLA-25 COMMON FLY FRAME

15
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

16
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

17
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.
Allrightsreserved©2018WharfedalePro.WharfedaleProisamemberoftheIAGGroup.