XPA2500
XPA4640
XPAꢀSERIES
INSTALLATION/OWNER’SꢀMANUAL
MobileꢀPowerꢀAmplifiers
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XPAꢀSERIESꢀINSTALLATION
ConnectionꢀDescriptions
NOTE
Beꢀsureꢀtoꢀfollowꢀspecificꢀinstructionsꢀincludedꢀwithꢀyourꢀamplifierꢀinstallationꢀkit
(notꢀincludedꢀwithꢀthisꢀamplifier).ꢀTheꢀinformationꢀbelowꢀshouldꢀbeꢀusedꢀaꢀgeneralꢀ
guidelineꢀonly.
PowerꢀWireꢀ(+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.
GroundꢀWireꢀ(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.
RemoteꢀTurn-onꢀWireꢀ(REM)
• The remote turn-on wire connects to the head unit's amplifier turn-on lead or
power antenna output.
SpeakerꢀWires
• 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.
InputꢀSignalꢀ
• 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
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XPAꢀSERIESꢀINSTALLATION
PowerꢀandꢀSpeakerꢀConnections
XPA2500
3
6
7
1
2
4
5
8
XPA4640
5
4
7
2
1
3
7
6
LED Indicator
Bass Boost
Input Level Control
High Level Inputs
Low Level Inputs
Input Mode Switch
5
1
2
3
4
6
7
8
Crossover Mode Switch
Crossover Frequency
4
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XPAꢀSERIESꢀINSTALLATION
AudioꢀInputsꢀandꢀControls
XPA2500
4
1
2
3
5
XPA4640
5
2
1
4
3
Speaker Connection(s)
Ground Connection
Remote Connection
+12VDC Battery Connection
Fuse(s)
1
2
3
4
5
5
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XPAꢀSERIESꢀINSTALLATION
TypicalꢀWireꢀRouting
MainꢀPowerꢀConnections
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.
FuseꢀRating
When replacing fuses, make sure new fuse
is the correct type and amperage. Using an
incorrect fuse could damage the amplifier.
Power/GroundꢀWireꢀSize
For optimum performance, use only the wire
size listed below or larger. Make sure to use
the same size power and ground wire.
XPA2500 25 amp ATO x 1
XPA4640 25 amp ATO x 2
XPA2500 10 gauge
XPA4640 8 gauge
6
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XPAꢀSERIESꢀINSTALLATION
AmplifierꢀConnections
2ꢀSpeakersꢀ(stereo)
Subwooferꢀ(mono)
SpeakerꢀConnections
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.
TypicalꢀStereoꢀWiring
TypicalꢀBridgedꢀWiring
(2ꢀohmsꢀminimum)
(4ꢀohmsꢀminimum)
XPA2500 speaker connections shown
InputꢀSignalꢀConnections
LowꢀLevelꢀInputꢀ(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.
HighꢀLevelꢀInputꢀ(SpeakerꢀWire)
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.
CAUTION
Do not use both low and high level inputs at the same time - connect only one or the other.
7
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XPAꢀSERIESꢀOPERATION
Configuration/Setup
InputꢀlevelꢀControl
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.
InputꢀModeꢀSwitch
(XPA4640)
Select 2ꢀCH 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 2ꢀCH mode.
Select 4ꢀCH 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.
CrossoverꢀꢀMode
(XPA2500ꢀ&ꢀXPA4640)
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 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.
CrossoverꢀFrequencyꢀControl
BassꢀBoost
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!
LEDꢀIndicator The LED indicator illuminates green during normal
operation (POWER) and red when the amplifier detects a
fault (PROTECT).
8
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XPAꢀSERIESꢀWARRANTY
LimitedꢀOne-YearꢀWarrantyꢀ
This warranty gives you specific legal rights.
Whatꢀtoꢀdo?
You may also have other rights which vary from
state to state.
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.
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.
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.
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.
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:
Whoꢀisꢀcovered?ꢀThis warranty is extended to
the original retail purchaser for products
purchased and used in the U.S.A.
• Call us toll-free at 1-866-382-5476
• E-mail us at [email protected]
Whatꢀisꢀcovered?ꢀ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.
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.
9
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XPAꢀSERIESꢀOPERATION
Specificationsꢀ
CEA-2006 Power Standard Specifications
(reference:ꢀ14.4VDC,ꢀ20Hz~20kHz)
XPA2500
Power Output: 50ꢀWattsꢀRMSꢀxꢀ2ꢀchannelsꢀatꢀ4ꢀohmsꢀandꢀ<ꢀ1%ꢀTHD+N
Signal to noise ratio: 75dBAꢀ(reference:ꢀ1ꢀwattꢀintoꢀ4ꢀohms)
Additional power output:
ꢀ
ꢀ
75ꢀWattsꢀRMSꢀxꢀ2ꢀchannelsꢀatꢀ2ꢀohmsꢀandꢀ<ꢀ1%ꢀTHD+N
150ꢀWattsꢀRMSꢀxꢀ1ꢀchannelꢀatꢀ4ꢀohmsꢀ(bridged)ꢀandꢀ<ꢀ1%ꢀTHD+N
Dynamic power: 300ꢀWattsꢀatꢀ4ꢀohms
Frequency response: 20Hz~20kHzꢀ(-3dB)
Maximum input signal: 6V
Minimum input signal: 200mV
Speaker output impedance: 2~8ꢀohmsꢀ(stereo),ꢀ4~8ꢀohmsꢀ(bridged)
Bass boost: 0~12dBꢀ@ꢀ45Hz
Crossover range: 50~500Hz,ꢀ12dB/octave
Power supply: 11-16ꢀVDC,ꢀnegativeꢀground
Fuse: 25ꢀampꢀATO
Amplifier dimensions: 8.9"ꢀxꢀ2.13"ꢀxꢀ9.17"ꢀ(WxHxD)
ꢀ
(226ꢀxꢀ54ꢀxꢀ233ꢀmm)
Typical installation dimensions: 11.5"ꢀxꢀ3.25"ꢀxꢀ9.17"ꢀ(WxHxD)
ꢀ
(292ꢀxꢀ83ꢀxꢀ233ꢀmm)
CEA-2006 Power Standard Specifications
(reference:ꢀ14.4VDC,ꢀ20Hz~20kHz)
XPA4640
Power Output: 50ꢀWattsꢀRMSꢀxꢀ4ꢀchannelsꢀatꢀ4ꢀohmsꢀandꢀ<ꢀ1%ꢀTHD+N
Signal to noise ratio: 72dBAꢀ(reference:ꢀ1ꢀwattꢀintoꢀ4ꢀohms)
Additional power output:
ꢀ
ꢀ
75ꢀWattsꢀRMSꢀxꢀ4ꢀchannelsꢀatꢀ2ꢀohmsꢀandꢀ<ꢀ1%ꢀTHD+N
150ꢀWattsꢀRMSꢀxꢀ2ꢀchannelsꢀatꢀ4ꢀohmsꢀ(bridged)ꢀandꢀ<ꢀ1%ꢀTHD+N
Dynamic power: 600ꢀWattsꢀatꢀ4ꢀohms
Frequency response: 20Hz~20kHzꢀ(-3dB)
Maximum input signal: 6V
Minimum input signal: 200mV
Speaker output impedance: 2~8ꢀohmsꢀ(stereo),ꢀ4~8ꢀohmsꢀ(bridged)
Bass boost: 0~12dBꢀ@ꢀ45Hz
Crossover range: 50~500Hz,ꢀ12dB/octave
Power supply: 11-16ꢀVDC,ꢀnegativeꢀground
Fuse: 25ꢀampꢀATOꢀxꢀ2
Amplifier dimensions: 13.69"ꢀxꢀ2.13"ꢀxꢀ9.17"ꢀ(WxHxD)
ꢀ
(348ꢀxꢀ54ꢀxꢀ233ꢀmm)
Typical installation dimensions: 16"ꢀxꢀ3.25"ꢀxꢀ9.17"ꢀ(WxHxD)
(406ꢀxꢀ83ꢀxꢀ233ꢀmm)ꢀ
ꢀ
10
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XPAꢀSERIESꢀOPERATION
Notes
11
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XPAꢀSERIESꢀOPERATION
Troubleshooting
Problem
Cause
Action
Unitꢀwillꢀnotꢀturnꢀon +12V wire not connected or incorrect voltage Check connections for proper voltage
(noꢀpowerꢀLEDꢀindicator) REM wire not connected or incorrect voltage (11~16VDC)
GND wire not connected
Check connection to ground
Fuse(s) blown
Replace fuse(s)
Unitꢀhasꢀpowerꢀ-ꢀLEDꢀisꢀ Speaker wires not connected
Check connections at speakers
Increase volume level at head unit
greenꢀ(butꢀnoꢀsound)
Volume turned all the way down
One or more speaker wires touching each Insulate all bare speaker wires from each
other or touching chassis ground
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
Unitꢀblowsꢀfuse(s)
Engineꢀnoise
Incorrect fuse rating
Use fuse(s) with correct rating
Check for pinched wire
+12V wire touching chassis ground
Speaker(s) defective or damaged
Bad ground connection
Check/replace speaker(s)
Make sure amplifier is grounded to clean
bare metal
Signal ground loop or RFI (radio frequency Re-route RCA cables from existing high
interference) current wiring
LEDꢀilluminatesꢀred One or more speaker wires touching each Insulate all bare speaker wires from each
(protectꢀmode)
other or touching chassis ground
other and chassis ground
Speaker(s) defective or
Check/replace speaker(s)
damaged internally (shorted)
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
Distortedꢀaudioꢀoutput Incorrect input signal type or
Check connections and reduce/adjust input
level
input level too high
Lowꢀaudioꢀoutput
Weakꢀbass
Incorrect input signal type or
input level too low
Check connections and increase/adjust
input level
Speaker(s) are wired out of phase
Check (+) and (-) speaker connections
(Observe correct polarity)
Dual Electronics Corp.
Toll Free: 1-866-382-5476
©2008 Dual Electronics Corp.
NSA0608-V01
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