Dual Stereo Amplifier XPR520 User Manual

XPR520  
INSTALLATION / OWNER'S MANUAL  
Mobile Power Amplifier  
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Connection Descriptions  
Note: Be sure to follow specific instructions included with your amplifier installation  
kit (not included with this amplifier). The information below should be used a general  
guideline only.  
Power Wire (BAT+)  
• 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. 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 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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Audio Inputs and Controls  
XPR520  
3
4
5
6
1
2
RCA Line Inputs  
Speaker Inputs  
Gain  
Crossover Mode  
4
5
6
1
2
3
Crossover Frequency Control  
Bass Boost  
Power and Speaker Connections  
XPR520  
1
4
2
3
5
Fuse(s)  
Ground Connection  
1
2
3
4
5
Speaker Connection(s)  
Remote Connection  
+12VDC Battery Connection  
4
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Typical Wire Routing  
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.  
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.  
Fuse Rating  
When replacing fuses, make sure new fuse  
is the correct type and amperage. Using an  
incorrect fuse could damage the amplifier.  
10 awg  
30 amp ATO x 1  
5
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Amplifier Connections  
2 Speakers (stereo)  
Subwoofer (mono)  
Speaker Connections  
Connect speaker wires observing  
polarity. The minimum impedance  
load for the XPR520 is 2 ohms  
stereo and 4 ohms bridged. Use  
of loads lower than these is not  
recommended and may cause  
amplifier damage. The XPR520  
can be wired for stereo, bridged  
or stereo/bridged simultaneous  
operation.  
Typical Stereo Wiring  
Typical Bridged Wiring  
(2 ohms minimum)  
(4 ohms minimum)  
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.  
Grey = Right (+)  
Grey/Black = Right (-)  
Black = Ground  
White/Black = Left (-)  
White = Left (+)  
HI-LEVEL INPUT CONNECTION  
CAUTION  
Do not use both low and high level inputs at the same time - connect only one or the other.  
6
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Configuration/Setup  
Input level Control  
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.  
Crossover Mode  
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 OFF when using with coaxial-type  
speakers.  
Note: Choose OFF 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.  
Crossover Frequency  
Control  
This control allows precise adjustment of the crossover  
frequency.  
Bass Boost  
This control provides additional boost @ 45Hz when used  
with subwoofers. Adjust this control with caution - as  
improper use can damage speakers!  
LED Indicator  
The LED indicator illuminates blue during normal operation  
(POWER) and red when the amplifier detects a fault  
(PROTECT).  
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Specifications  
CEA-2006 Power Standard Specifications  
(reference: 14.4VDC, 20Hz~20kHz)  
Power Output (14.4VDC, 20Hz ~ 20kHz):  
XPR520  
50 Watts RMS x 2 channels @ 4 ohms and 1% THD+N  
75 Watts RMS x 2 channels @ 2 ohms and 1% THD+N  
150 Watts RMS x 1 channel @ 4 ohms (bridged) and 1% THD+N  
Total dynamic power: 400 Watts @ 4 ohms  
Signal to noise ratio: 75dBA (reference: 1 watt into 4 ohms)  
Frequency response: 20Hz ~ 20kHz (-3dB)  
Amplifier dimensions: 2.78" (H) x 9.09" (W) x 10.56" (D)  
Troubleshooting  
Problem  
Cause  
Action  
+12V wire not connected or incorrect voltage Check connections for proper voltage  
REM wire not connected or incorrect voltage (11~16VDC)  
Unit will not turn on  
(no power LED indicator) GND wire not connected  
Fuse(s) blown  
Check connection to ground  
Replace fuse(s)  
Speaker wires not connected  
Volume turned all the way down  
Check connections at speakers  
Increase volume level at head unit  
One or more speaker wires touching each Insulate all bare speaker wires from each  
Unit has power - LED is  
blue (but no sound)  
other or touching chassis ground  
other and chassis ground  
Speaker(s) defective or damaged  
Check/replace speaker(s)  
Check high or low level inputs for proper  
connection  
Input signal not connected  
Incorrect fuse rating  
Use fuse(s) with correct rating  
Check for pinched wire  
Unit blows fuse(s)  
Engine noise  
+12V wire touching chassis ground  
Speaker(s) defective or damaged  
Check/replace speaker(s)  
Make sure amplifier is grounded to clean  
bare metal  
Bad ground connection  
Signal ground loop or RFI (radio frequency Re-route RCA cables from existing high  
interference) current wiring  
One or more speaker wires touching each Insulate all bare speaker wires from each  
other or touching chassis ground  
other and chassis ground  
LED illuminates red Speaker(s) defective or  
Check/replace speaker(s)  
(protect mode)  
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  
Incorrect input signal type or  
input level too high  
Check connections and reduce/adjust input  
level  
Distorted audio output  
Low audio output  
Weak bass  
Incorrect input signal type or  
input level too low  
Check connections and increase/adjust  
input level  
Check (+) and (-) speaker connections  
(Observe correct polarity)  
Speaker(s) are wired out of phase  
8
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Limited One-Year Warranty  
This warranty gives you specific legal  
What to do?  
rights. 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  
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.  
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:  
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.  
• Call us toll-free at 1-866-382-5476  
• E-mail us at [email protected]  
What is covered? This warranty covers all  
defects in material and workmanship in  
this product. The following are not covered: Exclusion of Certain Damages: This  
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  
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  
license conditions and copyright notices for or imputed. No person or representative  
com.  
is authorized to assume for the company  
any other liability in connection with the  
9
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Notes  
10  
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Notes  
11  
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Dual Electronics Corp.  
Toll Free: 1-866-382-5476  
©2013 Dual Electronics Corp.  
NSA0313-V01  
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