Axxera MINI AX550D Operating instructions

INSTALLATION / OWNER'S MANUAL
Mobile Power Amplifiers
MINI SERIES
AX550D

2
INSTALLATION
Preparation
Please read entire manual before installation. Due to the technical nature of
amplifiers, it is highly recommended that your Axxera 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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 as 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(nomorethan36"or
1meter).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signals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.
•Keeplowlevelinputsawayfromanypowerwirestoavoidenginenoise.
•Neverrunanywiresunderneathoroutsidethevehicle.
3
INSTALLATION
Connection Descriptions

High Pass Filter
Crossover Mode
Gain
1
2
3
Low Pass Filter
Bass Boost
2 31
4
5
345
INSTALLATION
Audio Inputs and Controls
4
23 1

Speaker Connections
+12VDC Battery Connection
1
2
Ground Connection
Fuse
3
4
4
13
2
INSTALLATION
Power and Speaker Connections
5

6
INSTALLATION
POWER
SPEAKER WIRE
Fuse Rating
When replacing fuses, make sure new fuse
is the correct type and amperage. Using an
incorrect fuse could damage the amplifier.
AX550D 40A x 1
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.
AX550D 4 Ga.
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
INSTALLATION
High-Level Input
(speaker cables)
Low-Level Input
(RCA)
Speaker Connections
Connect speaker wires observing polarity. The minimum impedance load for the
AX550D is 2 ohms stereo and 2 ohms mono. Use of loads lower than these is not
recommended and may cause amplifier damage.
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.
L
R
Note: Do not use both low and high level inputs
at the same time - connect only one or the other.
Amplifier Connections
CHANNELS 1 & 2 CHANNELS 3 & 4
SUBWOOFER
2-8 ohm 2-8 ohm
2-8 ohm

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.
Thecrossoverisusedtofilteroutfrequencies
aboveorbelowacertainpoint.ChooseLPFwhen
usingtheamplifierwithsubwoofers,HPFwhen
usingwithmidrange/tweetercombinationsand
FLATwhenusingwithcoaxial-typespeakers.
Note: Choose FLAT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!
Settingthiscontroltothedesiredfrequencywill
limitharmfulfrequenciesbelowthesettingfrom
goingtothesubwoofer(s),preventingpossible
damagefromfrequenciesthatsubwoofersarenot
designed to handle.
ThegreenLEDindicatorilluminatesduringnormal
operation(POWER)andtheredLEDindicator
isvisiblewhentheamplifierdetectsafault
(PROTECT).
Input level Control
Crossover Mode
Crossover
Frequency Control
Bass Boost
Subsonic Filter
LED Indicators
INSTALLATION
Configuration/Setup
8

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)
INSTALLATION
Troubleshooting
9

Channels 1,2,3 and 4
Power [email protected] <1% THD+N
•56 Watts x 4 channels @ 4 Ohms
•79 Watts x 4 channels @ 2 Ohms
•154 Watts x 2 channels @ 4 0hms (bridged)
Peak Music Power Output: 400 Watts
Subwoofer
Power [email protected] <1% THD+N
•400 Watts x 1 channel @ 2 Ohms
Peak Music Power Output: 800 Watts
Total Peak Music Power Output: 1200 Watts
Signal to noise ratio: > 90dB (THD < 0.05% @ 4Ω, 14.4V)
Frequency response: 10Hz -35kHz (-3dB)
Amplifier dimensions: 1.6” (41mm) x 4.7” (119mm) x 10.2” (259mm)
AX550D
INSTALLATION
Specifications

INSTALLATION
One-Year Limited 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 from an authorized Dual dealer
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:
software,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.Specificlicenseconditionsand
copyrightnoticesforthesoftwarecanbe
foundviawww.dualav.com.
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[e-mail]
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.

DualElectronicsCorp.
TollFree:1-866-382-5476
Monday-Friday,9AM-5PM,EST
www.axxeraaudio.com
©2014DualElectronicsCorp.
NSA1113-V01