9
PROBLEM
CAUSE
ACTION
Unit will not
turn on (no
power LED
indicator)
•
BAT+ 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 will not
turn on (no
power LED
indicator)
•
Volume turned all the way
down
•
Increase volume level at
head unit
•
Speaker defective or
damaged
•
Check/replace speaker
•
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
•
BAT+ wire touching chassis
ground
•
Check for pinched wire
•
Subwoofer defective or
damaged
•
Check/replace subwoofer
Engine noise
•
Bad ground connection
•
Make sure subwoofer is
grounded to clean bare
metal
•
Signal ground loop or RFI
(radio frequency interfer-
ence)
•
Re-route RCA cables from
existing high current
wiring
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 or adjust input
level
Weak bass
•
Low frequency output is
out of phase
•
Adjust phase control as
needed
TROUBLESHOOTING
