Dual Stereo Amplifier XPA2500 User Manual

XPA2500  
XPA4640  
XPAꢀSERIES  
INSTALLATION/OWNERSꢀMANUAL  
MobileꢀPowerꢀAmplifiers  
 
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
 
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
 
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
 
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
 
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
 
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
 
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
 
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  
 
XPAꢀSERIESꢀOPERATION  
Notes  
11  
 
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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