Dual XPE1700 - Manual (Page 12)

Dual Electronics Corp.
Toll Free: 1-866-382-5476
www.dualav.com
©2010 Dual Electronics Corp.
NSA0610-V01
XPE SERIES OPERATION
Troubleshooting
Problem Cause Action
Unit will not turn on
(no power LED indicator)
+12V wire not connected or incorrect voltage
REM wire not connected or incorrect voltage Check connections for proper voltage
(11~16VDC)
GND wire not connected Check connection to ground
Fuse(s) blown Replace fuse(s)
Unit has power - LED is
blue (but no sound)
Speaker wires not connected Check connections at speakers
Volume turned all the way down Increase volume level at head unit
One or more speaker wires touching each
other or touching chassis ground Insulate all bare speaker wires from each
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) Incorrect fuse rating Use fuse(s) with correct rating
+12V wire touching chassis ground Check for pinched wire
Speaker(s) defective or damaged Check/replace speaker(s)
Engine noise Bad ground connection Make sure amplifier is grounded to clean
bare metal
Signal ground loop or RFI (radio frequency
interference) Re-route RCA cables from existing high
current wiring
LED illuminates red
(protect mode)
One or more speaker wires touching each
other or touching chassis ground Insulate all bare speaker wires from each
other and chassis ground
Speaker(s) defective or
damaged internally (shorted) Check/replace speaker(s)
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
Distorted audio output Incorrect input signal type or
input level too high
Check connections and reduce/adjust input
level
Low audio output Incorrect input signal type or
input level too low Check connections and increase/adjust
input level
Weak bass Speaker(s) are wired out of phase Check (+) and (-) speaker connections
(Observe correct polarity)