AUDAC CAP224 User manual

CAP Series
User Manual
www.audac.eu

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3
Index
Introduction 5
CAP Series Block Diagram 6
Precautions 7
Safety requirements7 
Caution servicing7
EC Declaration of Conformity7
Waste of Electrical and Electronic Equipment (WEEE) 8
Caution 8
Chapter 1: Pin connections and connectors 9
Connection standards 9
Wire up the system 9
Chapter 2: Front & rear panel 10
Front panel overview 10
Front panel description 10
Rear panel overview 11
Rear panel description 11
Chapter 3: Connecting the Amplifier 12
Input connections 12
Output connections 12
Chapter 4: Additional information 14
Technical specifications 14
Notes 16

4

5
Introduction
Multi Channel 100V Power Amplifiers
TheCAPSeriesareprofessional100VMulti-ChannelPowerAmplifiers,containingvarious
modelswithdifferentchannelsanddifferentoutputpowerconfiguration.Differentoutput
configurationswithtwoandfourchannelsandpowerratingsfor120Watt,240Wattand
480Wattforeachchannelareavailable.
Thisway,aflexiblesolutioniscreatedforMulti-Zoneaudiodistributionsystemswithtwo
ormoreindependentzones.
Theyaredesignedasno-nonsenseamplifierswithonlythenecessarycontrolsand
connections,whichcreatesgreatsimplicityinuseandinstallation.Ahighefficiencyand
reliabilityofthedevicesisachievedbyusingswitchingpowersuppliesincombinationwith
Class-DAmplifiertechnology.Atemperaturecontrolledfanconstantlykeepsallpartswithin
therightoperationrange,whileavoidingexcessivebuzz.Abuilt-inmultipurposeprotection
circuitprotectsagainstDCmalfunction,Shortcircuit,overheating,overloadandlimitsthe
signalwhennecessary.
TheinputconnectionsareperformedusingbalancedXLRconnectorsandLinkoutput
connectorsareprovidedforlinkthroughtootheramplifiers.Besides,ahigh-passfilter
switch(400Hz)andaGainadjustmentpotentiometerareprovidedforeachchannel.
Theoutputconnectionsareperformedusingreliableterminalblockconnectorsandthisall
ishousedintoasolidconstructed,doublerackspace(2HE)19”rackmountinghousing.

6
CAP Series Block Diagram

7
Precautions
READ FOLLOWING INSTRUCTIONS FOR YOUR OWN SAFETY
ALWAYSKEEPTHESEINSTRUCTIONS.NEVERTHROWTHEMAWAY
ALWAYSHANDLETHISUNITWITHCARE
HEEDALLWARNINGS
FOLLOWALLINSTRUCTIONS
NEVEREXPOSETHISEQUIPMENTTORAIN,MOISTURE,ANYDRIPPINGORSPLASHING
LIQUID.ANDNEVERPLACEANOBJECTFILLEDWITHLIQUIDONTOPOFTHISDEVICE.
DONOTPLACETHISUNITINANENCLOSEDENVIRONMENTSUCHASABOOKSHELF
ORCLOSET.ENSURETHEREISADEQUATEVENTILATIONTOCOOLTHEUNIT.DONOT
BLOCKTHEVENTILATIONOPENINGS.
DONOTSTICKANYOBJECTSTHROUGHTHEVENTILATIONOPENINGS.
DONOTINSTALLTHISUNITNEARANYHEATSOURCESSUCHASRADIATORSOR
OTHERAPPARATUSTHATPRODUCEHEAT
DONOTPLACETHISUNITINENVIRONMENTSWHICHCONTAINHIGHLEVELSOFDUST,
HEAT,MOISTUREORVIBRATION
THISUNITISDEVELOPEDFORINDOORUSEONLY.DONOTUSEITOUTDOORS
PLACETHEUNITONASTABLEBASEORMOUNTITINASTABLERACK
ONLYUSEATTACHMENTS&ACCESSORIESSPECIFIEDBYTHEMANUFACTURER
UNPLUGTHISAPPARATUSDURINGLIGHTNINGSTORMSORWHENUNUSEDFORLONG
PERIODSOFTIME
ONLYCONNECTTHISUNITTOAMAINSSOCKETOUTLETWITHPROTECTIVE
EARTHINGCONNECTION





EC DECLARATION OF CONFORMITY
Thisproductconformstoalltheessentialrequirementsandfurther
relevantspecificationsdescribedinfollowingdirectives:2004/108/EC
(EMC)and2006/95/EC(LVD)
CAUTION - SERVICING
Thisproductcontainsnouserserviceableparts.Referallservicingto
qualifiedservicepersonnel.Donotperformanyservicing(unlessyou
arequalifiedto)

8






CAUTION
Thesymbolsshownareinternationallyrecognizedsymbolsthatwarnaboutpotentional
hazardsofelectricalproducts.Thelightningflashwitharrowpointinanequilateral
trianglemeansthattheunitcontainsdangerousvoltages.Theexclamationpointin
anequilateraltriangleindicatesthatitisnecessaryfortheusertorefertotheusers
manual.
Thesesymbolswarnthattherearenouserserviceablepartsinsidetheunit.Donot
opentheunit.Donotattempttoservicetheunityourself.Referallservicingtoqualified
personnel.Openingthechassisforanyreasonwillvoidthemanufacturer’swarranty.Do
notgettheunitwet.Ifliquidisspilledontheunit,shutitoffimmediatelyandtakeittoa
dealerforservice.Disconnecttheunitduringstormstopreventdamage.
WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT (WEEE)
TheWEEEmarkingindicatesthatthisproductshouldnotbedisposed
withregularhousholdwasteattheendofitsworkinglife.Thisregulation
iscreatedtopreventanypossibleharmtotheenvironmentorhuman
health.
Thisproductisdevelopedandmanufacturedwithhighqualitymaterials
andcomponentswhichcanberecycledand/orreused.Pleasedispose
thisproducttoyourlocalcollectionpointorrecyclingcentreforelectrical
andelectronicwaste.Thiswillmaketosurethatitwillberecycled
onanenvironmentallyfriendlymanner,andwillhelptoprotectthe
environmentinwhichwealllive.

9
Chapter 1
Pin connections and connectors
CONNECTION STANDARDS
Thein-andoutputconnectionsforAUDACaudioequipmentareperformedcorresponding
tointernationalwiringstandardsforprofessionalaudioequipment.
Cinch (RCA):
Forunbalancedlineinputconnections
Tip: Signal  Sleeve:  Ground
White: Left  Red: Right
XLR:
Forbalancedsignalinputconnections
 Pin 1: Ground
 Pin 2: Signal+
 Pin 3: Signal-
Forbalancedsignallink-throughconnections
 Pin 1: Ground
 Pin 2: Signal+
 Pin 3: Signal-

Wire up the system
Thewiringofthesystemmustbedoneaccordingtothefollowingrules,toguaranteea
properfunctioningofthesysteminallcircumstances.
1. Speakercableforamplifiedoutputs:
Minimum 2 x 1.5 mm²
If distance > 15m: 2 x 2.5 mm²)

2. Musicsourcesandzoneoutputs:
Must be connected with high-quality audio cable and high-quality
connectors

10
Chapter 2
Front & rear panel
Front panel description
ThefrontpaneloftheCAPseriesslighlyvariesdependingoftheoutputconfigurationand
powerrating,butbasicallythepanellayoutforallCAPamplifiersissimilar.
Power switch
Apowerswitchallowstoswitchtheamplifieronandoff,whiletheblueindicatorLED
locatednexttothebuttonilluminateswhenthepowerisswitchedon.
Indicator Led’s
FourLED’sforeverychannelindicatetheoperationoftheamplifier.ThegreenSignal
LEDilluminateswheneverasignalispresent,whilethe-20dBLEDilluminateswhenthe
inputsignalexceedsthe-20dBulevel.TheClipLEDilluminateswhenthecorresponding
channelisworkingatmaximumlevel.Toensurethebestsignal-to-noiseratio,theClip
LEDmayonlyilluminateatpeaklevels.
WhentheClipLEDilluminatesfrequently,theamplifierwillbeoverloaded,adistorted
“Clipping”soundwillbeavailableontheoutput.TheProtectionLEDwillilluminatewhen
overheatingoccurs,oranyotherfaultisdetected.WhentheprotectionLEDisilluminated,
nosignalwillbeavailableontheoutputs.TheprotectionLED’swillalsoilluminatefora
fewsecondswhenpoweringuptheamplifier,andwhentheamplifierisswitchedoffthey
willslowlyfadeout.
Front Panel overview
CAP424

11
Rear Panel overview
Rear panel description
TherearpaneloftheCAPseriesslightlyvariesdependingoftheoutputconfigurationand
powerrating,butbasicallythepanellayoutforallCAPamplifiersissimilar.AnXLRinput
connectorwithXLRlink-throughoutputconnector,ahighpassfilterswitch,againcontrol
potentiometerandanterminalblockoutputconnectorareprovidedforeverychannel.
AC Power inlet with fuse
Themainspowersupply(100~240VAC/50~60Hz)hastobeappliedtothisACpower
inlet.TheconnectionismadebyanIECpowerconnectorandisfittedwithafuse.When
replacingthefuse,makesurethatthevalueofthereplacementfusematchesthevalueof
theoriginalfuse.(CAP224:T4AH/250V-CAP248:T6.3AH/250V-CAP424:T6.3AH/250V
-CAP448:T12AH/250V)
High pass filter switch
Bymeansofthisswitch,theintegratedHighPassFilter(HPF)canbeswitchedONand
OFF.WhenthefilterisswitchedON,frequenciesbelow400Hzwillbesuppressed.
Thiscanbeusefulforeliminatinglow-frequencyhumandnoisecausedbyexternal
equipmentandprotectsspeakersfromdamagecausedbyexcessivelowfrequency
transients.
Gain control potentiometer
Eachchannelisfittedwithagaincontrolknobwherebythelevelforeachindividual
channelcanbeadjusted.
Loudspeaker connections
Theloudspeakeroutputconnectionsareperformedusing4-pinterminalblock
connectors,makingitpossibletoconnecthighimpedance(100V)loudspeakerstothe
amplifieroutputs.
Input connections
TheinputconnectionsoftheamplifierareperformedusingbalancedXLRconnectors.
EverychannelhasaXLRinputconnectorandaXLRlinkoutputconnector.Theinput
signalfromthesignalsource,pre-amplifierormixershouldbeconnectedtotheXLR
inputconnections.AndbymeansoftheXLRlinkoutputconnectors,thesignalcanbe
linkedthroughtomultipleamplifiers.
AC Input
230V 50Hz, 1080W
FUSE T6.3AH /250V
CAP424
AUDAC

12
Chapter 3
Connecting the Amplifier
NOTE
MakesurethepowerisswichedOFFwhenanychangeismadetotheconnectionsofthe
amplifier.
Input connections
TheinputconnectionsoftheamplifierareperformedusingbalancedXLRconnectors.Every
channelhasaXLRinputconnectorandaXLRlinkoutputconnector.
Theinputsignalfromthesignalsource,pre-amplifierormixershouldbeconnectedtothe
XLRinputconnections.AndbymeansoftheXLRlinkoutputconnectors,thesignalcanbe
linkedthroughtomultipleamplifiers.
AC Input
230V 50Hz, 1080W
FU SE T6.3AH /250V
CAP424
AUDAC
Output connections
Theloudspeakeroutputconnectionsareperformedusing4-pinterminalblock
connectors,makingitpossibletoconnecthighimpedance(100V)loudspeakerstothe
amplifieroutputs.
AC Input
230V 50Hz, 1080W
FUSE T6.3AH /250V
CAP424
AUDAC

13
Thetablebelowshowstheoutputvoltage,impedanceandmaximumpowerloadfor
eachcorrespondingamplifier.
Output Voltage Impedance Power
CAP224
CAP248
CAP424
CAP448
100Volt
100Volt
100Volt
100Volt
42Ohm
21Ohm
42Ohm
21Ohm
240Watt
480Watt
240Watt
480Watt
The100Voltspeakersmaybeconnectedinparallelontheoutputsoftheamplifier
unlessthemaximumload/impedancehasbeenreached.Thenumberofallowable
loadspeakersdependsofthepower/impedanceofeachconnectedloudspeaker.

14
Chapter 4
Additional information
Technical specifications
OutputPower      CAP224 2x240Watt
(1kHz,THD1%)      CAP248 2x480Watt  
       CAP424 4x240Watt
       CAP448 4x480Watt

Frequencyresponse       50Hz-18kHz
SignaltoNoiseRatio       >90dB
TotalHarmonicDistortion+Noise     <0.3%
CommonModeRejection      70dB
Crosstalk        >70dB
Inputs    Type     Balanced Line
    Connectors    FemaleXLRInput
         MaleXLRLinkOutput
    Impedance    10kOhm
    Sensitivity    1VRMS
Output    Type     100 V Loudspeaker Output
    Connectors    4-pinEuroTerminalBlock~5.08mm
    Impedance  CAP224/424 42Ohm
       CAP248/448 21Ohm 
Controls        Gain
         High-Passfilterswitch(400Hz)
Indicators        Power
Protect
Peak
-20dB
Signal
Protection        DC-ShortCircuit
         OverHeating
         OverLoad
Limiter
Coolingsystem        Temperaturecontrolledfan
Amplifiertechnology       Class-D
Powersupply   Type     Switchingmode
    Range     230~240VAC/50Hz

15
Powerconsumption  Idle   CAP224/248 50Watt
       CAP424/448 89Watt
    1/8RatedPower CAP224 115Watt
       CAP248 187Watt
       CAP424 218Watt
       CAP448 440Watt

    1/3RatedPower CAP224 221Watt
       CAP248 400Watt
       CAP424 435Watt
       CAP448 870Watt
Weight       CAP224 7.2Kg
       CAP248 7.5Kg
       CAP424 8.35Kg
       CAP448 8.85Kg

16
Notes