SBP8A
INSTALLATION/OWNER'SꢀMANUAL
8"ꢀBandpassꢀEnclosureꢀwithꢀBuilt-inꢀAmplifier
SBP8AꢀINSTALLATIONꢀ
SafetyꢀFirst
Theꢀfollowingꢀinstructionsꢀareꢀdesignedꢀtoꢀensureꢀsafetyꢀduringꢀinstallationꢀandꢀ
useꢀofꢀtheꢀSBP8A.ꢀFailureꢀtoꢀheedꢀtheseꢀinstructionsꢀcanꢀresultꢀinꢀinjuryꢀorꢀdamageꢀ
toꢀtheꢀunitꢀorꢀvehicle.
The following installation instructions are intended to be used as a basic
guideline. If you feel unsure about installing this speaker system yourself, Dual
recommendsꢀacquiringꢀtheꢀservicesꢀofꢀaꢀprofessionalꢀcarꢀaudioꢀinstallationꢀ
center.
Beforeꢀinstallation,ꢀpleaseꢀreviewꢀtheꢀfollowingꢀguidelines:
1.ꢀꢀBeꢀsureꢀtoꢀcarefullyꢀreadꢀandꢀunderstandꢀtheꢀinstructionsꢀbeforeꢀattemptingꢀtoꢀ
install this product.
2.ꢀForꢀsafety,ꢀdisconnectꢀtheꢀbatteryꢀnegativeꢀterminalꢀpriorꢀtoꢀbeginningꢀtheꢀ
installation.
3.ꢀIfꢀadditionalꢀwiringꢀisꢀrequired,ꢀweꢀrecommendꢀrunningꢀallꢀwiresꢀpriorꢀtoꢀ
mounting your bandpass enclosure in place.
4. To ensure reliable performance and minimize signal or power loss, use the
highestꢀqualityꢀconnectorsꢀavailable.
5.ꢀUseꢀcautionꢀbeforeꢀyouꢀdrillꢀorꢀcut!ꢀBeꢀcarefulꢀnotꢀtoꢀcutꢀorꢀdrillꢀintoꢀgasꢀtanks,ꢀ
fuelꢀlines,ꢀbrakeꢀorꢀhydraulicꢀlines,ꢀvacuumꢀlinesꢀorꢀelectricalꢀwiringꢀwhenꢀ
workingꢀonꢀanyꢀvehicle.ꢀ
6.ꢀNeverꢀrunꢀspeakerꢀwiresꢀunderneathꢀyourꢀvehicle.ꢀRunningꢀspeakerꢀwiresꢀ
insideꢀtheꢀvehicleꢀprovidesꢀtheꢀbestꢀprotectionꢀfromꢀexhaust,ꢀheatꢀandꢀ
environmentalꢀelements.ꢀ
7.ꢀAvoidꢀrunningꢀwiresꢀover,ꢀnearꢀorꢀthroughꢀsharp-edgedꢀsurfaces.ꢀWeꢀsuggestꢀ
you also use rubber grommets to protect any wires routed through metal,
especially the firewall.
8.ꢀWhenꢀrunningꢀtheꢀspeakerꢀcableꢀtoꢀtheꢀamplifier,ꢀavoidꢀrunningꢀitꢀnearꢀsourcesꢀ
ofꢀhighꢀcurrentꢀ(i.e.ꢀwiringꢀharnesses,ꢀbatteryꢀcables).
3
SBP8AꢀINSTALLATION
ConnectionꢀDescriptions
NOTE
Beꢀsureꢀtoꢀfollowꢀspecificꢀinstructionsꢀincludedꢀwithꢀyourꢀamplifierꢀinstallationꢀ
kitꢀ(notꢀincludedꢀwithꢀthisꢀamplifier).ꢀTheꢀinformationꢀbelowꢀshouldꢀbeꢀusedꢀaꢀ
generalꢀguidelineꢀonly.
PowerꢀWireꢀ(BAT+)
•ꢀꢀDisconnectꢀnegativeꢀbatteryꢀterminalꢀbeforeꢀproceeding.ꢀConsultꢀaꢀqualifiedꢀ
technician for instructions if you are unsure.
•ꢀꢀPlanꢀwireꢀroutingꢀbeforeꢀcuttingꢀanyꢀwiresꢀtoꢀlength.ꢀBeginꢀbyꢀroutingꢀtheꢀpowerꢀ
BAT+ꢀwireꢀfromꢀtheꢀbatteryꢀtoꢀtheꢀamplifierꢀlocation.ꢀUseꢀaꢀgrommetꢀwhenꢀ
runningꢀwiresꢀthroughꢀtheꢀfirewallꢀorꢀmetalꢀopenings.ꢀAvoidꢀrunningꢀtheꢀpowerꢀ
wireꢀnearꢀexistingꢀvehicleꢀwiringꢀtoꢀpreventꢀinducedꢀnoiseꢀfromꢀenteringꢀtheꢀ
audio system.
•ꢀꢀUseꢀextremeꢀcautionꢀwhenꢀdrillingꢀholesꢀtoꢀavoidꢀdamagingꢀfuelꢀlinesꢀorꢀ
existingꢀvehicleꢀwiring.ꢀꢀ
•ꢀꢀTheꢀBAT+ꢀwireꢀMUSTꢀbeꢀfusedꢀwithinꢀ18"ꢀofꢀtheꢀbatteryꢀforꢀprotectionꢀofꢀtheꢀ
vehicle’sꢀelectricalꢀsystem.
GroundꢀWireꢀ(GND)
•ꢀꢀTheꢀamplifierꢀgroundꢀwireꢀshouldꢀbeꢀasꢀshortꢀasꢀpossible.ꢀChooseꢀaꢀcleanꢀ
unpaintedꢀsectionꢀofꢀmetalꢀorꢀtheꢀvehicleꢀchassisꢀwhenꢀattachingꢀtheꢀgroundꢀ
connection. Be sure to clean the area of any dirt or grease.
RemoteꢀTurn-onꢀWireꢀ(REM)
•ꢀꢀTheꢀremoteꢀturn-onꢀwireꢀconnectsꢀtoꢀtheꢀheadꢀunit'sꢀamplifierꢀturn-onꢀleadꢀorꢀ
otherꢀswitchedꢀ12ꢀvoltꢀsource.
InputꢀSignalꢀ
•ꢀꢀTheꢀamplifier'sꢀinputꢀsignalꢀconnectsꢀtoꢀtheꢀheadꢀunit'sꢀlowꢀlevelꢀ(RCA)ꢀorꢀhighꢀ
levelꢀ(speakerꢀwire)ꢀoutputs.ꢀ
•ꢀꢀDedicatedꢀsubwooferꢀorꢀlowꢀlevelꢀinputsꢀsignalꢀdeliverꢀtheꢀbestꢀperformance.ꢀIfꢀ
unavailable,ꢀuseꢀtheꢀhighꢀlevelꢀinputsꢀ-ꢀwhenꢀinterfacingꢀwithꢀfactoryꢀheadꢀunitꢀ
forꢀinstance.ꢀBeꢀsureꢀtoꢀobserveꢀtheꢀcorrectꢀpolarityꢀwhenꢀusingꢀtheꢀhighꢀlevelꢀ
inputs.
CAUTION
•ꢀDoꢀnotꢀuseꢀbothꢀlowꢀandꢀhighꢀlevelꢀinputsꢀatꢀtheꢀsameꢀtimeꢀ-ꢀconnectꢀonlyꢀoneꢀ
or the other.
•ꢀꢀNeverꢀrunꢀanyꢀwiresꢀunderneathꢀorꢀoutsideꢀtheꢀvehicle.
4
SBP8AꢀINSTALLATIONꢀ
ConnectionsꢀandꢀControls
1
2
3
8
7
4
6
5
CrossoverꢀFrequencyꢀ
PhaseꢀControl
1
5
6
7
8
PowerꢀConnections
Fuse
2
3
4
InputꢀLevelꢀControl
HighꢀLevelꢀInputs
LowꢀLevelꢀInputs
LED Indicator
5
SBP8AꢀINSTALLATION
TypicalꢀWireꢀRouting
BAT+ (BATTERY)
MainꢀPowerꢀConnections
ConnectꢀBAT+,ꢀGNDꢀandꢀREMꢀwiresꢀaccordingly.ꢀAꢀsuitableꢀfuseꢀMUSTꢀbeꢀinstalledꢀonꢀtheꢀ
BAT+ꢀleadꢀwithinꢀ18"ꢀofꢀtheꢀbatteryꢀforꢀprotectionꢀofꢀtheꢀvehicle’sꢀelectricalꢀsystem.
FuseꢀRating
Power/GroundꢀWireꢀSize
Whenꢀreplacingꢀtheꢀfuse,ꢀmakeꢀ
sure new fuse is the correct type
andꢀamperage.ꢀUsingꢀanꢀincorrectꢀ
fuse could damage the amplifier.
TheꢀSBP8Aꢀusesꢀ(1)ꢀ7.5ꢀamp ATO
style fuse.
Forꢀoptimumꢀperformance,ꢀuseꢀonlyꢀ
12ꢀgaugeꢀwireꢀorꢀlarger.ꢀMakeꢀsureꢀ
to use the same size power and
ground wire.
6
SBP8AꢀINSTALLATIONꢀ
SetupꢀandꢀꢀAdjustmentꢀofꢀControls
Lowꢀlevelꢀ(RCA)ꢀinputꢀsignalꢀisꢀpreferredꢀforꢀbestꢀ
performance. Typical trunk-mount installations
requireꢀaꢀ17-20ꢀfootꢀRCAꢀcable.ꢀMostꢀtrucksꢀandꢀ
behind-seatꢀapplicationsꢀrequireꢀaꢀ6-12ꢀfootꢀRCAꢀ
cable.ꢀUsingꢀtwistedꢀpairꢀconstructionꢀRCAꢀcablesꢀ
will minimize noise.
InputꢀSignalꢀConnections
LowꢀLevelꢀ(RCA)
HighꢀlevelꢀinputsꢀshouldꢀonlyꢀbeꢀusedꢀwhenꢀRCAꢀ
outputsꢀareꢀnotꢀavailableꢀfromꢀtheꢀheadꢀunit.ꢀConnectꢀ
theꢀheadꢀunitꢀspeakerꢀoutputsꢀtoꢀtheꢀhighꢀlevelꢀinputꢀ
connector shown on page 6. Do not use both low and
highꢀlevelꢀinputsꢀatꢀtheꢀsameꢀtimeꢀ-ꢀconnectꢀonlyꢀoneꢀ
or the other.
HighꢀLevelꢀInputꢀ
(SpeakerꢀWire)
Theꢀadjustableꢀcrossoverꢀisꢀusedꢀtoꢀfilterꢀoutꢀ
frequenciesꢀaboveꢀ70Hzꢀ~ꢀ200Hz.ꢀAdjustꢀitꢀtoꢀwhereꢀ
the SBP8A sound output blends with the rest of the
sound system.
CrossoverꢀFrequencyꢀ
Control
The phase control compensates for delay between
the SBP8A output and the rest of the sound system.
Beginꢀwithꢀtheꢀphaseꢀcontrolꢀsetꢀtoꢀ0ꢀdegrees.ꢀIfꢀ
theꢀsoundꢀisꢀadequateꢀfromꢀtheꢀnormalꢀlisteningꢀ
positionꢀinsideꢀtheꢀvehicle,ꢀnoꢀfurtherꢀadjustmentꢀisꢀ
necessary. If the sound is thin or lacking bass, adjust
the phase control until the bass is full and punchy.
PhaseꢀControl
Theꢀinputꢀlevelꢀcontrolꢀ(gain)ꢀisꢀusedꢀtoꢀobtainꢀtheꢀ
best possible match between the head unit audio
output and the amplifier input. Begin by turning
theꢀinputꢀlevelꢀcontrolꢀfullyꢀcounterclockwise.ꢀNext,ꢀ
turnꢀupꢀtheꢀheadꢀunitꢀvolumeꢀcontrolꢀaroundꢀ3/4ꢀofꢀ
theꢀwayꢀup.ꢀAdjustꢀtheꢀinputꢀlevelꢀcontrolꢀclockwiseꢀ
until audible distortion is heard, then slightly
counterclockwiseꢀtoꢀprovideꢀtheꢀbestꢀmatch.
InputꢀLevelꢀControl
The LED indicator illuminates blue during normal
operation.
LEDꢀIndicator
7
SBP8AꢀINSTALLATION
Troubleshooting
Problem
Cause
Action
Unitꢀwillꢀnotꢀturnꢀon
BAT+ꢀwireꢀnotꢀconnectedꢀorꢀincorrectꢀvoltageꢀ Checkꢀconnectionsꢀforꢀproperꢀvoltageꢀ
(noꢀpowerꢀLEDꢀindicator) REMꢀwireꢀnotꢀconnectedꢀorꢀincorrectꢀvoltage
(11~16VDC)
GNDꢀwireꢀnotꢀconnected
Checkꢀconnectionꢀtoꢀground
Fuse(s)ꢀblown
Replaceꢀfuse(s)
Unitꢀhasꢀpowerꢀ-ꢀLEDꢀisꢀ Volumeꢀturnedꢀallꢀtheꢀwayꢀdown
Increaseꢀvolumeꢀlevelꢀatꢀheadꢀunit
Check/replaceꢀspeaker
blueꢀ(butꢀnoꢀsound)
Speakerꢀdefectiveꢀorꢀdamaged
Input signal not connected
Checkꢀhighꢀorꢀlowꢀlevelꢀinputsꢀforꢀ
proper connection
Unitꢀblowsꢀfuse(s)
Engineꢀnoise
Incorrect fuse rating
Useꢀfuse(s)ꢀwithꢀcorrectꢀrating
Checkꢀforꢀpinchedꢀwire
BAT+ wire touching chassis ground
Speakerꢀdefectiveꢀorꢀdamaged
Bad ground connection
Check/replaceꢀspeaker
Makeꢀsureꢀamplifierꢀisꢀgroundedꢀtoꢀ
clean bare metal
SignalꢀgroundꢀloopꢀorꢀRFIꢀ(radioꢀfrequencyꢀ
Re-routeꢀRCAꢀcablesꢀfromꢀexistingꢀ
interference)
high current wiring
Distortedꢀaudioꢀoutput
Lowꢀaudioꢀoutput
Weakꢀbass
Incorrect input signal type or
inputꢀlevelꢀtooꢀhigh
Checkꢀconnectionsꢀandꢀreduce/adjustꢀ
inputꢀlevel
Incorrect input signal type or
inputꢀlevelꢀtooꢀlow
Checkꢀconnectionsꢀandꢀincreaseꢀorꢀ
adjustꢀinputꢀlevel
Lowꢀfrequencyꢀoutputꢀisꢀoutꢀofꢀphaseꢀ
Adjust phase control as needed
8
SBP8AꢀWARRANTYꢀ
LimitedꢀOneꢀYearꢀWarranty
Thisꢀwarrantyꢀgivesꢀyouꢀspecificꢀlegalꢀrights.ꢀ
Whatꢀtoꢀdo?
Youꢀmayꢀalsoꢀhaveꢀotherꢀrightsꢀwhichꢀvaryꢀ
from state to state.
1.ꢀBeforeꢀyouꢀcallꢀforꢀservice,ꢀcheckꢀtheꢀ
troubleshootingꢀguideꢀinꢀyourꢀowner’sꢀ
manual. A slight adjustment of any custom
controlsꢀmayꢀsaveꢀyouꢀaꢀserviceꢀcall.
DualꢀElectronicsꢀCorp.ꢀwarrantsꢀthisꢀproductꢀ
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.
2.ꢀIfꢀyouꢀrequireꢀserviceꢀduringꢀtheꢀwarrantyꢀ
period, you must carefully pack the product
(preferablyꢀinꢀtheꢀoriginalꢀpackage)ꢀandꢀshipꢀ
it by prepaid transportation with a copy of
the original receipt from the retailer to an
authorizedꢀserviceꢀcenter.ꢀ
DualꢀElectronicsꢀCorp.ꢀagrees,ꢀatꢀourꢀoption,ꢀ
during the warranty period, to repair any defect
in material or workmanship or to furnish an
equalꢀnew,ꢀrenewedꢀorꢀcomparableꢀproductꢀ
(whicheverꢀisꢀdeemedꢀnecessary)ꢀinꢀexchangeꢀ
withoutꢀcharges,ꢀsubjectꢀtoꢀverificationꢀofꢀtheꢀ
defect or malfunction and proof of the date of
purchase.ꢀSubsequentꢀreplacementꢀproductsꢀ
are warranted for the balance of the original
warranty period.
3. Please describe your problem in writing and
includeꢀyourꢀname,ꢀaꢀreturnꢀUPSꢀshippingꢀ
addressꢀ(P.O.ꢀBoxꢀnotꢀacceptable),ꢀandꢀa
daytime phone number with your shipment.
4.ꢀForꢀmoreꢀinformationꢀandꢀforꢀtheꢀlocationꢀofꢀ
theꢀnearestꢀauthorizedꢀserviceꢀcenterꢀpleaseꢀ
contactꢀusꢀbyꢀoneꢀofꢀtheꢀfollowingꢀmethods:
Whoꢀisꢀcovered?ꢀThis warranty is extended
to the original retail purchaser for products
purchasedꢀandꢀusedꢀinꢀtheꢀU.S.A.
•ꢀCallꢀusꢀtoll-freeꢀatꢀ1-866-382-5476
•ꢀE-mailꢀusꢀatꢀ[email protected]
Whatꢀisꢀcovered?ꢀThisꢀwarrantyꢀcoversꢀallꢀ
defects in material and workmanship in
thisꢀproduct.ꢀTheꢀfollowingꢀareꢀnotꢀcovered:ꢀ
installation/removalꢀcosts,ꢀdamageꢀresultingꢀ
from accident, misuse, abuse, neglect, product
modification, improper installation, incorrect
lineꢀvoltage,ꢀunauthorizedꢀrepairꢀorꢀfailureꢀtoꢀ
follow instructions supplied with the product,
or damage occurring during return shipment
of the product.
ExclusionꢀofꢀCertainꢀDamages:ꢀThisꢀwarrantyꢀ
isꢀexclusiveꢀandꢀinꢀlieuꢀofꢀanyꢀandꢀallꢀotherꢀ
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
orꢀnotꢀarisingꢀfromꢀtheꢀcompany’sꢀnegligence,ꢀ
actualꢀorꢀimputed.ꢀNoꢀpersonꢀorꢀrepresentativeꢀ
is authorized to assume for the company any
other liability in connection with the sale of
thisꢀproduct.ꢀInꢀnoꢀeventꢀshallꢀtheꢀcompanyꢀbeꢀ
liableꢀforꢀindirect,ꢀincidentalꢀorꢀconsequentialꢀ
damages.
9
SBP8AꢀINSTALLATION
Notes
Please keep your original sales receipt and be prepared to
ForꢀYourꢀRecords
provideꢀthisꢀreceiptꢀinꢀtheꢀeventꢀyouꢀrequireꢀservice,ꢀasꢀyourꢀ
original receipt is considered the best proof of purchase and
indicates the date you purchased your Dual product.
Dealer Name
Dealer Phone
Purchase Date
Registerꢀyourꢀproductꢀonlineꢀatꢀwww.dualav.com
RegisterꢀYourꢀProduct
10
SBP8AꢀINSTALLATIONꢀ
Specifications
MaximumꢀOutputꢀPower 160ꢀwatts
ContinuousꢀOutputꢀPower 80ꢀwatts
FrequencyꢀResponse 20-200Hz
S/NꢀRatioꢀ@ꢀ1ꢀwatt 72dB
InputꢀImpedance Lowꢀlevelꢀ(RCA):ꢀ10kꢀohms
Highꢀlevelꢀ(speaker):ꢀ2Kꢀohms
InputꢀSensitivityꢀ(RCA)ꢀ 50mVꢀ–ꢀ3Vꢀ
CrossoverꢀFrequency 70–200Hz
CrossoverꢀSlope 6dB/octave
Phase 0–180ꢀdegrees
Fuse 7.5 amp ATO
Dimensions 15.35”ꢀxꢀ9.22”ꢀxꢀ15.35”ꢀ(WxHxD)
Design and specifications subject to change without
notice.
11
DualꢀElectronicsꢀCorp.
TollꢀFree:ꢀ1-866-382-5476
©2009ꢀDualꢀElectronicsꢀCorp.ꢀAllꢀrightsꢀreserved.
NSA0609-V01
PrintedꢀinꢀChina
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