Dual XPA4640 User manual

XPA4640
Dual
Brand
Dual
Model
XPA4640
Category
Audio amplifiers
Type
User manual

This manual is also suitable for

INSTALLATION/OWNER’S MANUAL
Mobile Power Amplifiers
XPA SERIES
XPA2500
XPA4640
2
XPA SERIES INSTALLATION
Preparation
Please read entire manual before installation. Due to the technical nature of amplifiers,
it is highly recommended that your DUAL amplifier is installed by a professional installer
or an authorized dealer.
Before You Start
•Disconnectnegativebatteryterminal.(consultaqualifiedtechnicianforinstructions)
•Avoidinstallingtheamplifierwhereitwouldbesubjecttohightemperatures,suchas
fromdirectsunlight,orwhereitwouldbesubjecttodust,dirtorexcessivevibration.
•Useextremecautionwhendrillingholestoavoiddamagingfuellinesorexisting
vehiclewiring.
•Allamplifierinstallationsrequirepower,signalandspeakerwires(notincluded).
•Anamplifierinstallationkit(soldseparately)ishighlyrecommendedtofacilitatethe
installation. Consult your dealer for recommendations.
Mounting Location
•Chooseamountinglocationfortheamplifier.Suggestedlocationsincludeunderaseat
orinthetrunk.
•Theamplifiercanbemountedhorizontal(recommended)orvertical.Foroptimum
performance,makesuretoprovideatleast1"ofspacetoaroundallsides.Donot
mounttheamplifierundercarpetsorwhereairflowisrestricted.
•Donotinstalltheamplifierwhereitmaybeexposedtomoisture.
•Theoptimummountinglocationvariesbetweenvehicles.Remembertotestall
amplifier functions before completing the final mounting procedure.
TYPICAL MOUNTING METHOD
NOTE
Be sure to follow specific instructions included with your amplifier installation kit
(not included with this amplifier). The information below should be used a general 
guideline only.
Power Wire (+12V)
•Disconnectnegativebatteryterminalbeforeproceeding.Consultaqualified
technician for instructions if you are unsure.
•Planwireroutingbeforecuttinganywirestolength.Beginbyroutingthepower
+12Vwirefromthebatterytotheamplifierlocation.Useagrommetwhenrunning
wiresthroughthefirewallormetalopenings.Avoidrunningthepowerwirenear
existingvehiclewiringtopreventinducednoisefromenteringtheaudiosystem.
•Useextremecautionwhendrillingholestoavoiddamagingfuellinesorexisting
vehiclewiring.
•The+12VwireMUSTbefusedwithin18"ofthebatteryforprotectionofthevehicle’s
electrical system.
Ground Wire (GND)
•Theamplifiergroundwireshouldbeasshortaspossible.Chooseacleanunpainted
sectionofmetalorthevehiclechassiswhenattachingthegroundconnection.Be
sure to clean the area of any dirt or grease.
Remote Turn-on Wire (REM)
•Theremoteturn-onwireconnectstotheheadunit'samplifierturn-onleador
powerantennaoutput.
Speaker Wires
•Chooseadequategaugespeakerwiredependingonyourexactamplifier/speaker
combination.Besuretoobservepolaritywhenconnecting.
•Donotgroundanyspeakerwiresorconnectanyspeakerwirestogether.
Input Signal 
•Theamplifier'sinputsignalconnectstotheheadunit'slowlevel(RCA)orhighlevel
(speakerwire)outputs.
•Lowlevelinputsignaldeliverthebestperformance.Ifunavailable,usethehigh
levelinputs-wheninterfacingwithfactoryheadunitforinstance.
CAUTION
•Donotusebothlowandhighlevelinputsatthesametime-connectonlyoneor
the other.
•Neverrunanywiresunderneathoroutsidethevehicle.
3
XPA SERIES INSTALLATION
Connection Descriptions
4
XPA SERIES INSTALLATION
Power and Speaker Connections
LEDIndicator
BassBoost
CrossoverModeSwitch
CrossoverFrequency
1
2
3
4
InputLevelControl
HighLevelInputs
LowLevelInputs
InputModeSwitch
5
6
7
8
XPA2500
XPA4640
3
4 5
6 7
21
1
2
3
4
5
6
7
7
8
SpeakerConnection(s)
Ground Connection
RemoteConnection
1
2
3
+12VDCBatteryConnection
Fuse(s)
4
5
5
XPA SERIES INSTALLATION
Audio Inputs and Controls
4 3
2
5
1
XPA2500
XPA4640
1 2 3
4
5
6
XPA SERIES INSTALLATION
Fuse Rating
Whenreplacingfuses,makesurenewfuse
is the correct type and amperage. Using an
incorrect fuse could damage the amplifier.
XPA250025ampATOx1
XPA464025ampATOx2
Power/Ground Wire Size
Foroptimumperformance,useonlythewire
sizelistedbeloworlarger.Makesuretouse
thesamesizepowerandgroundwire.
XPA250010gauge
XPA46408gauge
Main Power Connections
Connect+12V,GNDandREMwiresaccordingly.AsuitablefuseMUSTbeinstalledonthe
+12Vleadwithin18"ofthebatteryforprotectionofthevehicle’selectricalsystem.
Typical Wire Routing
7
XPA SERIES INSTALLATION
Amplifier Connections
Speaker Connections
Connectspeakerwiresobserving
polarity.Theminimumimpedance
load for the XPA2500 and XPA4640
is 2 ohms stereo and 4 ohms
bridged.Useofloadslowerthan
these is not recommended and
may cause amplifier damage.
TheXPA2500andXPA4640can
bewiredforstereo,bridgedor
stereo/bridgedsimultaneous
operation.
Input Signal Connections
Low Level Input (RCA)
Lowlevel(RCA)inputsignalispreferredforbestperformance.Typicaltrunk-mount
amplifierinstallationsrequirea17-20footRCAcable.Mosttrucksandunder-seat
applicationsrequirea6-9footRCAcable.UsingtwistedpairconstructionRCAcableswill
minimize noise.
High Level Input (Speaker Wire)
Highlevelinputsshouldonly
beusedwhenRCAoutputsare
notavailablefromtheheadunit.
Connecttheheadunitspeaker
outputstothehighlevelinput
connectorasshownbelow.The
blackwire(signalreferenceground)
mayormaynotrequireaconnection
tochassisground-dependingon
your particular installation.
Subwoofer (mono)
Typical Bridged Wiring
(4 ohms minimum)
2 Speakers (stereo)
Typical Stereo Wiring
(2 ohms minimum)
CAUTION
Donotusebothlowandhighlevelinputsatthesametime-connectonlyoneortheother.
XPA2500speakerconnectionsshown
8
XPA SERIES OPERATION
Configuration/Setup
Theinputlevelcontrol(gain)isusedtoobtainthebest
possiblematchbetweentheheadunitaudiooutputand
theamplifierinput.Beginbyturningtheinputlevelcontrol
fullycounterclockwise.Next,turnuptheheadunitvolume
controlaround3/4ofthewayup.Adjusttheinputlevel
controlclockwiseuntilaudibledistortionisheard,then
slightlycounterclockwisetoprovidethebestmatch.
Repeatforallinputlevelcontrols.
Select2 CHmodeiftheheadunitonlyhas1pairofRCA
outputs.PlugtheRCA’sfromtheheadunitintochannels
1/2or3/4.All4amplifierinputswillreceiveasignal.
NOTE:Thereisnofaderfunctionwhenusing2 CH mode.
Select4 CHmodeiftheheadunithas2pairsofRCA
outputs.PlugtheRCA’sfromtheheadunitintochannels
1/2and3/4.
Thecrossoverisusedtofilteroutfrequenciesaboveor
belowacertainpoint.ChooseLPFwhenusingtheamplifier
withsubwoofers,HPFwhenusingwithmidrange/tweeter
combinations and FULLwhenusingwithcoaxial-type
speakers.
NOTE Choose FULLwhenusingtheamplifierinstereo/
bridgedsimultaneousmode.Inthismode,passive
crossoversarerequired.Failuretousethecorrectpassive
componentsmaydamagetheamplifierand/orspeakers.
Consultaqualifiedprofessionalforrecommendations.
Thiscontrolallowspreciseadjustmentofthecrossover
frequency.
Thiscontrolprovidesadditionalboost@45Hzwhenused
withsubwoofers.Adjustthiscontrolwithcaution-as
improperusecandamagespeakers!
TheLEDindicatorilluminatesgreenduringnormal
operation(POWER)andredwhentheamplifierdetectsa
fault(PROTECT).
Input level Control
Input Mode Switch
(XPA4640)
Crossover  Mode
(XPA2500 & XPA4640)
Crossover Frequency Control
Bass Boost
LED Indicator
9
XPA SERIES WARRANTY
Limited One-Year Warranty 
Thiswarrantygivesyouspecificlegalrights.
Youmayalsohaveotherrightswhichvaryfrom
state to state.
DualElectronicsCorp.warrantsthisproductto
the original purchaser to be free from defects in
materialandworkmanshipforaperiodofone
year from the date of the original purchase.
Dual Electronics Corp. agrees, at our option,
duringthewarrantyperiod,torepairanydefect
inmaterialorworkmanshiportofurnishan
equalnew,renewedorcomparableproduct
(whicheverisdeemednecessary)inexchange
withoutcharges,subjecttoverificationofthe
defect or malfunction and proof of the date of
purchase.Subsequentreplacementproducts
arewarrantedforthebalanceoftheoriginal
warrantyperiod.
Who is covered? Thiswarrantyisextendedto
the original retail purchaser for products
purchasedandusedintheU.S.A.
What is covered? Thiswarrantycoversall
defectsinmaterialandworkmanshipinthis
product.Thefollowingarenotcovered:
installation/removalcosts,damageresulting
from accident, misuse, abuse, neglect, product
modification, improper installation, incorrect
linevoltage,unauthorizedrepairorfailureto
followinstructionssuppliedwiththeproduct,
or damage occurring during return shipment of
the product.
What to do?
1.Beforeyoucallforservice,checkthe
troubleshootingguideinyourowner’s
manual.Aslightadjustmentofanycustom
controlsmaysaveyouaservicecall.
2.Ifyourequireserviceduringthewarranty
period,youmustcarefullypacktheproduct
(preferablyintheoriginalpackage)andship
itbyprepaidtransportationwithacopyofthe
original receipt from the retailer to an
authorizedservicecenter.
3.Pleasedescribeyourprobleminwritingand
includeyourname,areturnUPSshipping
address(P.O.Boxnotacceptable),anda
daytimephonenumberwithyourshipment.
4.Formoreinformationandforthelocationof
thenearestauthorizedservicecenterplease
contactusbyoneofthefollowingmethods:
•Callustoll-freeat1-866-382-5476
•E-mailusat[email protected]
ExclusionofCertainDamages:Thiswarranty
isexclusiveandinlieuofanyandallother
warranties,expressedorimplied,including
withoutlimitationtheimpliedwarrantiesof
merchantability and fitness for a particular
purpose and any obligation, liability, right,
claimorremedyincontractortort,whether
or not arising from the company’s negligence,
actualorimputed.Nopersonorrepresentative
is authorized to assume for the company any
otherliabilityinconnectionwiththesaleof
thisproduct.Innoeventshallthecompanybe
liableforindirect,incidentalorconsequential
damages.
10
XPA SERIES OPERATION
Specifications 
CEA-2006PowerStandardSpecifications
(reference: 14.4VDC, 20Hz~20kHz)
PowerOutput:50 Watts RMS x 2 channels at 4 ohms and < 1% THD+N
Signaltonoiseratio:75dBA (reference: 1 watt into 4 ohms)
Additionalpoweroutput:
  75 Watts RMS x 2 channels at 2 ohms and < 1% THD+N
  150 Watts RMS x 1 channel at 4 ohms (bridged) and < 1% THD+N
Dynamicpower:300 Watts at 4 ohms
Frequencyresponse:20Hz~20kHz (-3dB)
Maximuminputsignal:6V
Minimuminputsignal:200mV
Speakeroutputimpedance: 2~8 ohms (stereo), 4~8 ohms (bridged)
Bassboost:0~12dB @ 45Hz
Crossoverrange:50~500Hz, 12dB/octave
Powersupply: 11-16 VDC, negative ground
Fuse: 25 amp ATO
Amplifierdimensions:8.9" x 2.13" x 9.17" (WxHxD)
  (226 x 54 x 233 mm)
Typicalinstallationdimensions: 11.5" x 3.25" x 9.17" (WxHxD)
  (292 x 83 x 233 mm)
CEA-2006PowerStandardSpecifications
(reference: 14.4VDC, 20Hz~20kHz)
PowerOutput:50 Watts RMS x 4 channels at 4 ohms and < 1% THD+N
Signaltonoiseratio:72dBA (reference: 1 watt into 4 ohms)
Additionalpoweroutput:
  75 Watts RMS x 4 channels at 2 ohms and < 1% THD+N
  150 Watts RMS x 2 channels at 4 ohms (bridged) and < 1% THD+N
Dynamicpower:600 Watts at 4 ohms
Frequencyresponse:20Hz~20kHz (-3dB)
Maximuminputsignal:6V
Minimuminputsignal:200mV
Speakeroutputimpedance: 2~8 ohms (stereo), 4~8 ohms (bridged)
Bassboost:0~12dB @ 45Hz
Crossoverrange:50~500Hz, 12dB/octave
Powersupply: 11-16 VDC, negative ground
Fuse: 25 amp ATO x 2
Amplifierdimensions:13.69" x 2.13" x 9.17" (WxHxD)
  (348 x 54 x 233 mm)
Typicalinstallationdimensions: 16" x 3.25" x 9.17" (WxHxD)
  (406 x 83 x 233 mm) 
XPA2500
XPA4640
11
XPA SERIES OPERATION
Notes
Dual Electronics Corp.
TollFree:1-866-382-5476
www.dualav.com
©2008DualElectronicsCorp.
NSA0608-V01
XPA SERIES OPERATION
Troubleshooting
Problem Cause Action
Unit will not turn on
(no power LED indicator)
+12Vwirenotconnectedorincorrectvoltage
REMwirenotconnectedorincorrectvoltage
Checkconnectionsforpropervoltage
(11~16VDC)
GNDwirenotconnected Checkconnectiontoground
Fuse(s)blown Replacefuse(s)
Unit has power - LED is 
green (but no sound)
Speakerwiresnotconnected Checkconnectionsatspeakers
Volumeturnedallthewaydown Increasevolumelevelatheadunit
Oneormorespeakerwirestouchingeach
other or touching chassis ground
Insulateallbarespeakerwiresfromeach
other and chassis ground
Speaker(s)defectiveordamaged Check/replacespeaker(s)
Inputsignalnotconnected Checkhighorlowlevelinputsforproper
connection
Unit blows fuse(s)
Incorrectfuserating Usefuse(s)withcorrectrating
+12Vwiretouchingchassisground Checkforpinchedwire
Speaker(s)defectiveordamaged Check/replacespeaker(s)
Engine noise
Badgroundconnection Makesureamplifierisgroundedtoclean
bare metal
SignalgroundlooporRFI(radiofrequency
interference)
Re-routeRCAcablesfromexistinghigh
currentwiring
LED illuminates red
(protect mode)
Oneormorespeakerwirestouchingeach
other or touching chassis ground
Insulateallbarespeakerwiresfromeach
other and chassis ground
Speaker(s)defectiveor
damagedinternally(shorted)
Check/replacespeaker(s)
Speakerloadlessthan2ohms(stereo)
Speakerloadlessthan4ohms(bridged)
Adjustspeakerload-amplifierwillnot
operateatlessthan4ohmswhenbridged
Distorted audio output
Incorrectinputsignaltypeor
inputleveltoohigh
Checkconnectionsandreduce/adjustinput
level
Low audio output
Incorrectinputsignaltypeor
inputleveltoolow
Checkconnectionsandincrease/adjust
inputlevel
Weak bass
Speaker(s)arewiredoutofphase Check(+)and(-)speakerconnections
(Observecorrectpolarity)
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Dual XPA4640 User manual

XPA4640
Dual
Brand
Dual
Model
XPA4640
Category
Audio amplifiers
Type
User manual
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