Owner's Manual
®MEMPHIS
TROUBLESHOOTING
When
troubleshooting
your
subwoofer,
speaker
wires
should
be
tested
first.
Poor
Bass
Response
POWER
REFERENCE
SUBWOOFERS
•
Check
the
system
phasing
by
switching
the
positive
and
negative
speaker
wires
on
the
subwoofer.
If
the
bass
response
improves
the
subwoofer
was
out
of
phase.
Confirm
woofers
are
wired
to
the
correct
impedance
for
the
amplifier
•
Confirm
all
wiring
is
firmly
connected.
·Both
+12V
and
REM
terminals
must
have
+12
Volts
present
and
GND
must
be
connected
to
chassis'
ground
or
to
the
negative
battery
terminal.
·Confirm
the
signal
source
is
connected
and
supplying
an
output
signal.
To
confirm
the
amp
is
working,
connect
an
RCA
patch
cord
to
the
line
inputs
of
the
amplifier
(do
not
connect
the
other
end
of
the
patch
cord].
Briefly
tap the
center
pin
of
each
disconnected
RCA
with
your
finger.
This
should
produce
a
noise
(brief
static
or
hum)
in
the
speakers.
•
If
the
amp
is
hot,
check
the
speaker
impedance
or
load.
The
total
minimum
impedance
of
all
speakers
should
not
be
lower
than
the
rating
of
the
amp.
Only
One
Channel
Works
•
Confirm
the
speaker
terminal
strip
connections
are
firmly
connected.
•
Check
"balance"
control
on
your
signal
source.
·If
using
RCA
low-Level
inputs,
reverse
the
input
plugs
at
the
amplifier.
If
the
channel
that
is
silent
reverses
position,
the
problem
is
in
the
source
unit
or
connecting
cable.
Weak
Output
•
Check
input
sensitivity
control
adjustment
Unwanted
Noise
·Whine
that
increases
and
decreases
with
engine
speed-
confirm
the
AmpS
Source
unit
are
grounded
properly.
•
Clicking
or
popping
noise
at
a
rate
that
follows
engine
speed
-this
is
often
induced
by
the
vehicles
ignition
system.
Confirm
that
the
vehicle
is
equipped
with
resistor
spark
plugs
and
wires.
The
ignition
system
may
need
service.
Noise
can
be
caused
by
routing
speaker
input
wires
too
close
to
the
light
wires
and
other
accessory
wires
in
the
vehicle.
Re-route
wires
to
avoid
unwanted
interference.
·If
above
steps
do
not
improve/reduce
noise,
the
system
should
be
checked
by
a
professional
audio
installer
at
a
Memphis
Authorized
Dealer.
Amp
Red
LED
is
Illuminated
•
Speaker
or
wire
is
shorted
•
Battery
voltage
too
low
•
Battery
voltage
too
high
·Amplifier
has
overheated
due
to
improper
ventilation
SERVICE 6 RETURNS
Please
consult
with
your
local
authorized
dealer
if
you
experience
issues
with
your
unit.
You
may
also
contact
Memphis
Audio
customer
service
at
800-QBS-2300
or
email
tech
support
directly
at:
techsupport@memphiscaraudio.com.
INSTALLATION INFORMATION
Memphis
Audio
recommends
the
installation
of
our
products
to
be
performed
by
an
Authorized
dealer.
Attempting
an
installation
project
on
your
own
or
through
an
unauthorized
source
may
result
in
damage
to
your
products
and
may
potentially
vmd
your
warranty.
A
PROLONGED
EXPOSURE
TO
MEMPHIS
BASS
CAN
CAUSE
PERMANENT
HEARING
LOSS
AND
DAMAGE
~
TO
YOUR
EARS.
USE
CAUTION
BUT
DON'T
SAY
WE
DIDN'T
WARN
YOU.