wla-25 & wla-25sub - wharfedale pro€¦ · wla-25 & wla-25sub wla-25&25sub manual ......

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OPERATING MANUAL AND USER GUIDEWLA-25 & WLA-25SUB

WLA-25&25SUB MANUAL.indd 1 2017-6-20 9:23:17

ContentsIMPORTANT 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/WLA25SUB FLY FRAME ...................................................................................................................................... 8

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

DIMENSIONAL DRAWINGS-WLA-25SUB ........................................................................................................................ 10

DIMENSIONAL DRAWINGS-WLA-25 FLYFRAME ........................................................................................................... 11

DIMENSIONAL DRAWINGS-WLA-25SUB FLYFRAME .................................................................................................... 12

SPECIFICATION ............................................................................................................................................................... 13

WHARFEDALE PRO LIMITED WARRANTY .................................................................................................................... 14


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

• Followthemanufacturer’soperatinginstructionsforallperipheraldevicessuchasamplifiersandprocessors

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

• UseonlyaccessoriesspecifiedorsuppliedbyWharfedalePro

• Donotuseshieldedmicrophone/instrumentcablestoconnectamplifiersandspeakers,useonlyapprovedspeakercableswithproperconnectors

• Usecautionwithplacementandoperationof thisspeakersystem,permanenthearingdamagecanbecausedbyprolonged exposure to excessive sound pressure levels

• Referallservicingtoqualifiedprofessionals.Servicingisrequiredwhentheloudspeakerhasbeendamagedinanyway,suchasimpactdamage,liquidingressorforeignobjectdamage.Inadditiontheloudspeakershouldbereferredtoqualifiedservicepersonnelifthereisanykindofmalfunction.

Rigging,suspendingandmountingshouldonlybeattemptedbyexperiencequalifiedprofessionals.Incorrectusagecanresultindamagetoequipmentandproperty,injuryandevendeath.Undernocircumstancesshouldyouattempttorig,suspendormountthesespeakersunlessyouarefullyqualifiedandcertifiedtodosobyrelevantlocal,stateandnationalauthorities.Ifyouarenotproperlyqualifiedordonotknowofpertinentregulationsconsultqualifiedpersonnelforadvice.Consultastructuralengineerbeforesuspendingaspeakersystemandensurethatthetotalweightofyoursystemcanbeheldbythetrussormountingsurface.

Inspectallmountinghardwarebeforeyour linearray is flown. If there isanydamageordistortion toanymountinghardwaredonotflythearrayuntilanydamagedhardware isrepairedorreplaced.OnlyuseWharfedaleProsuppliedQuickreleasePins,contactyourWharfedaleProDistributorifanyquickreleasepinsarelostordamaged.


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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 audioperformancehasneverbeenhigher.Tomeettheseneeds,WharfedaleProembarkedonaprogramtodevelopthemostcompact,highestoutputlinearrayspeakersystemavailable.

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 byapremium1.7”diaphragm,neodymiumcompressiondriver,100°x10°multipleaperturediffractionwaveguide.Thiscreatesawidecoveragewithasuperbstereoimageandallowsformorediverseplacement.

Thewaveguideexitextendsnearlytothetopandbottomoftheenclosuretocreateacontinuousacousticalsourcewithminimaldiscontinuitiesbetweenadjacentelementsresultingingreatlyreduceddestructiveinteraction.

Premiummaterialsareusedthroughout thesystem.Theenclosure isconstructedofBalticbirchplywoodandcoatedinanenvironmentally friendly,waterbornepolymerfinishthat isfieldrepairable.Tokeeptheweight toaminimumandpreventrust,suspensionfittingsaremadeofaluminium.

Anelegantlysimple3-pointsuspensionsystemcombinedwith lightweight,compactsizeandexcellenthandlingergonomicsmeanthataonepersoncrewcaneasilydeployanarray.AsingleWLA-25arrayflyframesuspendsuptotwelve linearrayelementsorupto twelve linearrayelementsplusonesubwoofer.TheWLA-25systemisequallyathomeintheairorground-stacked.

INTRODUCTION


3

WLA-25

High sensitivity, Full Horn Loaded design

120WRMS/240WProgram/480WPeakPowerHandling

Dual 5” woofer, 1.5” voice coils

1x1” exit HF compression driver

1.7 “ Titanium diaphragm, neodymium magnet compression driver

100°x10°degreeconstant-directivityhorn

NominalPassiveCrossoverNetwork

Front hinged rigging system

Captiverigginghardwarewithtetheredquickreleasepins

Comprehensiveadjustablesplayangles

Integral,sideplateadjustableriggingsystem,verticalsplayadjustablein1°incrementsfrom0°-10°

TrapezoidBalticbirchplywoodenclosure

2xParallelSpeakonInputs

Constant directivity waveguides

Blackandwhitepaintfinish

WLA-25SUB

700WRMS/1400WProgram/2800WPeakpowerhandling

Roadtoughmodularsubwoofersystem

Dual 10” woofer, 2.5” voice coil

Nominal Impedance 4 Ohm

Stronginternalbracingpreventsbasslossanddistortionfromenclosure,vibrationandresonance

2xParallelSpeakonInputs

Blackandwhitepaintfinish

FEATURES


4

TheWLAcanbeconfiguredwithseveraldifferentsplayangles.Thesplayanglesdetermine theamountofoverlapbetweenthe individualunits.This isused todetermine theamountofsummationor ‘throw’ forseparatesectionsofthearray.As thesplayanglebetweenboxes increases thesummationdecreasesbut thespectralvariancedue tointeractionsbetweentheelementsisalsodecreased.

Formanyvenuesagoodcompromisebetweenthrowandspectralvariancecanbereachedbyvaryingthesplayangleacrossthelengthofthearray.Byvaryingtheangularseparationalongthelengthofthearray,abalancecanbemetfortherequiredcoverage.Smallersplayanglesprovidehighersummationtocovermoredistantseatingandbleachers.Larger splay angles provide lower summation with reduced spectral variance for close seating. Used correctly this can provide even coverage over long distances.

Eachgroupof loudspeakerswithdifferentsplayanglewillrequireaseparatechannelofamplificationanddifferentEQsettings.Thisisduetothedifferentsummationeffectsbydifferingsplayangles.

SPLAY ANGLES

Taperingthelevelofenclosureshasabeamsteeringeffectwhichcanbeusedintheconjunctionwithangularseparationbetweenelements.Thebeamwillbesteeredawayfromthe‘on-axis’centrelineofarraytowardthecabsbeingdrivenatthehighestlevel.Theextentofthebeamsteeringeffectdependsonthelengthofthearrayandtheleveldifferencebetweenthetopandthebottomofthearray.Thistechniqueallowsyoutofurthertailortheverticalcoveragetodifferentlyshapedvenues,reducingthelevelvariancebetweenthefrontandrearofthevenue.

Ideally the levelofeachenclosure is taperedgradually(e.g.0.5dBor1dBperelement).Thismeansyouwill requireanamplifierchannelperelement inpassivemode,or twoamplifierchannelsperelement inbi-ampmode.Groupsofelementscanbetaperedinpairsormore,althoughamoregradualtaperwillgiveyousmootherverticalpatterncontrol.

LEVEL TAPERING


5

FLEXIBLE ARRAYSArrayscanbeassembledusingonlyWLA-25linearraymodulesorwithWLA-25SUBSubwoofersatthetopofthearray.TheWLA-25SUBFlyFrameallowsforaWLA-25SUBsubwoofertobeusedatthetopofthearray.TheWLA-25SUBFlyFrame supports up to 12 x WLA-25 modules and 1 x WLA-25SUB with a safety factor of 12.

ArrayscanbeassembledusingonlyWLA-25linearraymodules.ThesmallerWLA-25FlyFramesupportsupto12xWLA-25 modules with a safety factor of 12.


6

Thehighfrequencyperformanceofthemediumandlongthrowsectionsofthelinearraywillbelimitedbyairabsorption.Asthedistancefromthesourceincreases,themidandhighfrequencieswillbereduced.Theamountofabsorptionatagiven frequency is function of pressure, temperature and relative humidity. By far the most important factor is the relative humidity,althoughtemperaturedoeshaveasignificanteffect.

Toachieveminimalspectralvarianceacrossthecoverageofthearray,thegroupsofloudspeakerscoveringthemiddletorearofthevenuewillrequireequalizationtocompensateforthiseffect.Airabsorptionisdifficulttopredictwithanygreataccuracy,andinanycasetherelativehumidityofthevenueislikelytochangewhentheaudiencearriveortheweatherchanges. It is important that the venue is monitored during the event as the equalization applied during the design stage withanemptyvenuemaynotbesuitableduringtheevent.

Asageneralguide,boostabove8kHzforalongthrowgroupofloudspeakersand12kHzforamediumthrowgroupofloudspeakers.

The chart overleaf shows attenuation in dB/m for a given frequency and humidity. It is important to note that the effects of airattenuationarelinear,unlikethelevelofattenuationfromdistancefromtheinversesquarelaw.Forexample,at100masourcewouldbe40dBdowncomparedtoit’sSPLat1m.Assuming50%relativehumidityand20°thelevelat10kHzwillbeanadditional16dBbelowthis(approximately56dBdown).

AIR ABSORPTION

OPTIMISED GROUND STACKINGWLA-25riggingdoublesupasanoptimizedgroundstackingsystem,usingtheWLA-25SUBsubwooferasabase.ArraysofWLA-25linearrayelementscanbeaimeddownwardsbyasmuchas10°tocoveraudienceareasclosetoastage,aswellasupwardbyasmuchas10°inordertobettercoverdistantbalconyseatingareas.


7

AIR ABSORPTION

TheWLA-25hasinternalcrossovers.TheinternalcrossoveroftheWLA-25loudspeakerdividestheaudiosignalintotheseparate frequency ranges for each driver.

TheWLA-25SUBsubwoofersdonothave internalcrossovers.This functionmustbesuppliedbyexternalelectronicdevices such as the Wharfedale Pro Versadrive series or LMX-204.


9

DIMENSIONAL DRAWINGS-WLA-25


10

DIMENSIONAL DRAWINGS-WLA-25SUB


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DIMENSIONAL DRAWINGS-WLA-25 FLY FRAME

TheWLA-25 ly frame iscertified toholda totalweight (including thirdpartyhardware)of230kg.Up to12WLA-25elementscanbeflownwithasafetyfactorof12.

543.0

462.5

50.0

95.0


12

DIMENSIONAL DRAWINGS-WLA-25SUB FLYF RAME

543.0

650.0

50.0

95.0

TheWLA-25/WLA-25SUBlyframeiscertifiedtoholdatotalweight(includingthirdpartyhardware)of280kg.Upto12WLA-25and1WLA-25SUBelementscanbeflownwithasafetyfactorof12.


13

SPECIFICATIONModel Name WLA-25 WLA-25SUBSystem Type Passive PassiveConfiguration two-way SubwooferFrequencyResponse(+/-3dB) 108-18kHz 56-1.5kHzFrequencyRange(-10dB) 108-20kHz 56-2.0kHzSensitivity 2.83v/1m HF:108dB/LF:100dB 107dBCalculated Maximum SPL @1m HF:135dB/LF:127dB 141dBSystem Rated Impedance 16Ω 4ΩLow Frequency TransducerLFSize(mm/inches) 130mm / 5'' 254mm / 10''LFVoice-CoilSize(mm/inches) 35.0mm / 1.4'' 65.5mm / 2.5''LF Magnet Material ferrite ferriteLF Frame Material aluminium aluminiumRated Impedance 16Ω 8ΩLF Power re:AES2-2012 2X60W 2X350WHigh Frequency TransducerHF Driver Type: Compression DriverCoilSize(mm/inches) 44mm / 1.75''ExitSize(mm/inches) 1"HF Magnet Material NdFeBDiaphragm Material TitaniumRated Impedance 16ΩHF Power re:AES2-2012 40WWaveguide Type squareNominalCoverage(HxV) 100°x10°Power SystemContinuousPower(w) HF:40W/LF:120W 700WSystemProgrammePower(w) HF:80W/LF:240W 1400WSystemPeakPower(w) HF:160W/LF:480W 2800WCrossover frequency 3.7kHzInput Connector 2xSpeakon 2xSpeakonRigging Intergralsideplateadjustablerigging0°-10° Integral,non-adjustablepole mount NO NOhandles yes yesEnclosurecabinettype Trapezoid squareEnclosureMaterialandfinish 15mm,18mm plywood 15mm,18mm plywoodColour Options blackorwhitepaint blackorwhitepaintGrille Material & Finish steel steelDimensions - 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"WeightNetWeight(kg/lbs) 13kg/28.6lbs 37kg/81.4lbsGrossWeight(kg/lbs) 15kg/33lbs 39.5kg/86.9lbs


14

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 WharfedaleProdealerordistributorforinformation.

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

WHARFEDALE PRO LIMITED WARRANTY


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Wharfedale ProfessionalIAGHouse13/14GlebeRoadHuntingdonCambridgeshirePE297DLUK

www.wharfedalepro.comWharfedaleProfessionalreservestherighttoalterorimprovespecificationswithoutnotice.Allrightsreserved©2017WharfedalePro.WharfedaleProisamemberoftheIAGGroup.


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