CDD‐LIVE USERGUIDE
CDD‐LIVEUserGuideV1.0 7
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Introduction
Mostself‐poweredportableloudspeakershavebeenunderpowered,light‐dutysystemsorveryhigh‐endsystemsoutofreach
ofmanyusers.Now,withthemulti‐purposeCDD‐LIVE!Series,MartinAudiobringseverythingrentalcompanies,system
integratorsandmusiciansrequirefromaself‐poweredloudspeakerintosharpfocus.
Comprisingthreefull‐rangemodelsandtwosubwoofers,CDD‐LIVE!Coverspracticallyallprofessionalstand‐aloneand
distributedapplications—fromsoundreinforcementandmonitoringforlivebands,DJ’sandcorporateevents,toinstallations
indanceclubs,ballrooms,theatresandperformingartscentres.
Combiningthe‘point‐source’benefitsofcoaxialdesignswiththeconsistentcoverageofDifferentialDispersiontechnology,CDD‐
LIVE!Fullrangesystemsareoptimisedforoptimumreal‐worldcoverageexhibitingwidehorizontaldispersionclosetothe
speakeratthebottomoftheverticaldispersionwhichnarrowstothetopoftheverticalcoveragetoensureexcellentpower
deliveryrighttothebackoftheroom.Thusallcornersoftheaudienceexperiencethesamesuperbsonicquality.
On‐boardClassDamplification,DSPandDante™DigitalAudionetworkingassuresimplicityofstageset‐upandefficient
installation,whiletour‐gradeenclosuresandcomprehensivemountingoptions—includingpolemount,wallbrackets,yokesand
rigginginserts—providemaximumflexibilityindeployment.
Withsonicconsistencyacrosstherange,arectangularcoveragefootprintandamultitudeofdeploymentoptions,CDD‐LIVE!is
trulyversatile—aprofessionalself‐poweredsolutionforahugehostofaudioapplications.
COAXIALDIFFERENTIALDISPERSIONTECHNOLOGY
IntroducedbyMartinAudiowiththelaunchoftheCDDInstallationSeriesofspeakers,full‐rangemodelsfeatureunique,
patentedCoaxialDifferentialDispersion™technology.CDDsystemsaugmentthe‘point‐source’benefitsofcoaxialdriverswith
theconsistencyofcoveragewhichDifferentialDispersiontechnologycandeliver.
Non‐coaxialsystemscansufferfromunevenfrequencyresponseinthecrossoverregionbecauseofinterferencebetweenthe
LFandHFsections;dependingonthelisteningposition,thiscausesoff‐axisvariations,particularlyclosetotheloudspeaker.In
contrast,coaxialsystemsaimtosumLFandHFcontributionsatallpositionsoff‐axis,evenclose‐up.
AdisadvantageofconventionalcoaxialdevicescanbeHFbeaming,wheretheHFdispersionreducesathigherfrequencies.This
isprimarilybecausetheHFenergyemergesthroughanarrowtubeinthepole‐pieceofthemagnetsystem.CDDSeriescoaxial
devicesovercomethisbytheuseofastaticwaveguidethatmergesseamlesslywiththeuniqueconeshape—maintainingthe
dispersionpatternevenatveryhighfrequencies.
ADifferentialDispersionhornhasatrapezoidaldispersionpatterninbothverticalandhorizontalplaneswhichcoversthetarget
areamoreevenlythanasystemwithaconventional,fixeddispersiontypehorn.Withaconventionalhorn,thespeakerisusually
placedaboveheadheightandaimedtowardsthecentreoftheaudience.Thisproducesanimperfectcoveragepatternwhich
missesoutsomeareas—particularlysideareasclosetotheloudspeaker.
Incontrast,aCDDCoaxialDifferentialDispersionsystemproducesarectangularcoveragepatternextendingtoallcornersofthe
audiencearea,whilewidehorizontalcoverageisachievedveryclosetotheloudspeaker.Theconsistencyoffrequencyresponse
andSPLthusachievedthroughouttheaudienceareaisexceptional.Theimprovedcoverageclosetothesourcealsomeansthat
CDDspeakerscanoftenbespacedfurtherapart,reducingoverallspeakercount.
CDD‐Livemarriesthisground‐breakingtechnologywithaclassDamplifierinarobustreadyenclosuretocomplementtheCDD
installationrangewitharangesuitableforportableapplicationsorfixedinstallationswhereapoweredproductisrequired.
DANTE™
AllmodelsintheCDD‐LiverangefeatureaclassDamplifierwithon‐boardDSPandinputtothesystemscanbeeitherbalanced
linelevelanalogueorDante™digitalaudio.IntroducedbyAudinate,Danteisanuncompressed,multi‐channeldigitalmedia
networkingplatform,withnear‐zerolatencyandsynchronization.Dantehasbecomethepreferreddigitalaudionetworking
solution,acommonplatformthattheindustryhadbeentryingtofindformanyyears.Ithasbeenadoptedbymorepro‐audio
AVmanufacturersthananyothernetworkingtechnology.Interoperabilityisnotadreamofthefuture,butarealitytoday.
HundredsofDante‐enabledproductsareavailablefromtheworld’sleadingmanufacturersmakinginterfacingasystemwith
CDD‐Livespeakersextremelystraightforwardoverinexpensive,readilyavailableCat5cable.