Axxera AX250DM Owner's manual

Brand
Axxera
Model
AX250DM
Category
Audio amplifiers
Type
Owner's manual

This manual is also suitable for

Axxera MINI AX250DM is a great amplifier for a variety of uses, whether you're looking to power your home stereo or your car audio system.

With 250 watts of power per channel, the AX250DM can provide plenty of power for even the most demanding speakers.

It also features a variety of inputs and outputs, making it easy to connect to any audio source.

Axxera MINI AX250DM is a great amplifier for a variety of uses, whether you're looking to power your home stereo or your car audio system.

With 250 watts of power per channel, the AX250DM can provide plenty of power for even the most demanding speakers.

It also features a variety of inputs and outputs, making it easy to connect to any audio source.

INSTALLATION / OWNER'S MANUAL
Mobile Power Amplifiers
MINI SERIES
AX460D
AX490D
AX250DM
AX350DM
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
M
M
Gain
Crossover Mode
Hi-Level Input
Crossover Frequency Control
RCA Input
1
2
3
Subsonic Filter
Bass Boost
Low Pass Filter
Remote Turn On
3
12
4
5
6
7
8
9
454 2
INSTALLATION
Audio Inputs and Controls
4
13
5
31 6 7 8 9
Speaker Connections
Fuse(s)
+12VDC Battery Connection
1
2
3
Remote Turn On
Ground Connection
Remote Output
4
5
256
1
5
1 2
3
INSTALLATION
Power and Speaker Connections
5
3
6
4
4
REM (Remote Turn On)
SPEAKERS
RCA CABLES
GROUND
FUSE
12V BATTERY
MAXIMUM
12V DC
(Power)
2-8 ohms
Fuse Rating
Whenreplacingfuses,makesurenewfuse
isthecorrecttypeandamperage.Usingan
incorrect fuse could damage the amplifier.
AX460D 40Ax1
AX490D 40Ax1
AX250DM 25A x 2
AX350DM 30A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.
AX460D 4 Ga.
AX490D 4 Ga.
AX250DM 4 Ga.
AX350DM 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.
6
INSTALLATION
Typical Wire Routing
No more than 36"
(1 meter)
High-Level Input
(speaker cables)
Low-Level Input
(RCA)
Speaker Connections
Connect speaker wires
observing polarity. The
minimum impedance load for
the AX460D and AX490D is
2 ohms stereo and 2ohms
bridged. Use of loads lower than
these is not recommended and
may cause amplifier damage.
The AX460D and AX490D 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
(2 ohms minimum)
2 Speakers (stereo)
Typical Stereo Wiring
(2 ohms minimum)
L
R
Note: Do not use both low and high level inputs
at the same time - connect only one or the other.
Typical speaker connections shown
7
INSTALLATION
Amplifier Connections
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 FLATwhen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
(AX250DM and
AX350DM)
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
Power [email protected] <1% THD+N
•56 Watts x 4 channels RMS @ 4 Ohms
•79 Watts x 4 channels RMS @ 2 Ohms
•154 Watts x 2 channels RMS @ 4 Ohms (bridged)
Peak Music Power Output: 400 Watts
Signal to noise ratio: > 90dB (THD < 0.05% @ 4Ω, 14.4V)
Frequency response: 10Hz -35kHz (-3dB)
Amplifier dimensions: 1.6” x 4.7” x 7.9” (41 x 119 x 201 mm)
Power [email protected] <1% THD+N
•97 Watts x 4 channels RMS @ 4 Ohms
•132 Watts x 4 channels RMS @ 2 Ohms
•275 Watts x 2 channels RMS @ 4 Ohms (bridged)
Peak Music Power Output: 600 Watts
Signal to noise ratio: > 90dB (THD < 0.05% @ 4Ω, 14.4V)
Frequency response: 10Hz– 35kHz (-3dB)
Amplifier dimensions: 1.6” x 4.7” x 9” (41 x 119 x 229 mm)
Power [email protected] <1% THD+N
•252 Watts x 1 channel RMS @ 2 Ohms
•473 Watts x 1 channel RMS @ 1 Ohm
Peak Music Power Output: 1200 Watts
Signal to noise ratio: >80dB (THD < 0.5% @ 4Ω, 14.4V)
Frequency response: 20Hz -250Hz (-3dB/octave)
Amplifier dimensions: 1.6” x 4.7” x 7.9” (41 x 119 x 201 mm)
Power [email protected] <1% THD+N
•368 Watts x 1 channel RMS @ 2 Ohms
•662 Watts x 1 channel RMS @ 1 Ohm
Peak Music Power Output: 1750 Watts
Signal to noise ratio: >80dB (THD < 0.5% @ 4Ω, 14.4V)
Frequency response: 20Hz -250Hz (-3dB)
Amplifier dimensions: 1.6” x 4.7” x 9” (41 x 119 x 229 mm)
AX460D
INSTALLATION
Specifications
AX490D
AX250DM
AX350DM
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cs@dualav.com
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
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Axxera AX250DM Owner's manual

Brand
Axxera
Model
AX250DM
Category
Audio amplifiers
Type
Owner's manual
This manual is also suitable for

Axxera MINI AX250DM is a great amplifier for a variety of uses, whether you're looking to power your home stereo or your car audio system.

With 250 watts of power per channel, the AX250DM can provide plenty of power for even the most demanding speakers.

It also features a variety of inputs and outputs, making it easy to connect to any audio source.

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