Owner's Manual

.. XPA SERIES OPERATION
---------------_ .. _. _ ... _---
Troubleshooting
Unit will not tum on + 12V wire not connected or incorrect voltage Check connections for proper voltage
(no power LED indicator) REM wire not connected or incorrect voltage (11-16VDC)
GND wire not connected Check connection to ground
Fuse(s) blown Replace fuse(s)
Unit has power -
LED is Speaker wires not connected Check connections at speakers
green (but no sound)
... V..:.o-lu-m-e-tu-r-n-e-d-a-ll-t-h-e-w-a-y-d-o-w-n------+-In-c-re-a-s-e-v-o-lu-m-e -Ie-v-e-l ~at-h-e-a-d-u-n-i-t -----t
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
Unit blows fuse(s)
Engine noise
LED illuminates red
(protect mode)
Distorted audio output
Low audio output
Weak bass
Incorrect fuse rating
+ 12V wire touching chassis ground
Speaker(s) defective
or damaged
Bad ground connection
Signal ground loop or
RFI (radio frequency
interference)
One or more speaker wires touching each
other or touching chassis ground
Speaker(s) defective or
damaged internally (shorted)
Speaker load less than 2 ohms (stereo)
Speaker load less than 4 ohms (bridged)
Incorrect input signal type or
input level too high
Incorrect input signal type or
input level
too low
Speaker(s) are wired out of phase
Dual
Use fuse(s) with correct rating
Check for pinched wire
Check/replace speaker(s)
Make sure amplifier is grounded
to clean
bare metal
Re-route
RCA cables from existing high
current wiring
Insulate all bare speaker wires from
each
other and chassis ground
Check/replace speaker(s)
Adjust speaker load - amplifier will not
operate at less than 4 ohms when bridged
Check connections and reduce/adjust input
level
Check connections and increase/adjust
input level
Check
(+) and (-) speaker connections
(Observe correct polarity)
Dual Electronics Corp.
Toll Free: 1-866-382-5476
www.dualav.com
©2009 Dual Electronics
Corp.
NSA0309-V02
.. XPA SERIES OPERATION
---------------_ .. _. _ ... _---
Troubleshooting
Unit will not tum on + 12V wire not connected or incorrect voltage Check connections for proper voltage
(no power LED indicator) REM wire not connected or incorrect voltage (11-16VDC)
GND wire not connected Check connection to ground
Fuse(s) blown Replace fuse(s)
Unit has power -
LED is Speaker wires not connected Check connections at speakers
green (but no sound)
... V..:.o-lu-m-e-tu-r-n-e-d-a-ll-t-h-e-w-a-y-d-o-w-n------+-In-c-re-a-s-e-v-o-lu-m-e -Ie-v-e-l ~at-h-e-a-d-u-n-i-t -----t
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
Unit blows fuse(s)
Engine noise
LED illuminates red
(protect mode)
Distorted audio output
Low audio output
Weak bass
Incorrect fuse rating
+ 12V wire touching chassis ground
Speaker(s) defective
or damaged
Bad ground connection
Signal ground loop or
RFI (radio frequency
interference)
One or more speaker wires touching each
other or touching chassis ground
Speaker(s) defective or
damaged internally (shorted)
Speaker load less than 2 ohms (stereo)
Speaker load less than 4 ohms (bridged)
Incorrect input signal type or
input level too high
Incorrect input signal type or
input level
too low
Speaker(s) are wired out of phase
Dual
Use fuse(s) with correct rating
Check for pinched wire
Check/replace speaker(s)
Make sure amplifier is grounded
to clean
bare metal
Re-route
RCA cables from existing high
current wiring
Insulate all bare speaker wires from
each
other and chassis ground
Check/replace speaker(s)
Adjust speaker load - amplifier will not
operate at less than 4 ohms when bridged
Check connections and reduce/adjust input
level
Check connections and increase/adjust
input level
Check
(+) and (-) speaker connections
(Observe correct polarity)
Dual Electronics Corp.
Toll Free: 1-866-382-5476
www.dualav.com
©2009 Dual Electronics
Corp.
NSA0309-V02