XPR520
INSTALLATION / OWNER'S MANUAL
Mobile Power Amplifier
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.
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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
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
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.
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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
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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
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Notes
10
Notes
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Dual Electronics Corp.
Toll Free: 1-866-382-5476
©2013 Dual Electronics Corp.
NSA0313-V01
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