Owner's Manual
10.
Battery
and
ground
connections
to
the
vehicle
should
be
made
with
crimped
ring
terminals
of
the
appropriate
size
(surface
area
is
what
counts;)
soldering
the
termi-
nals
after
crimping
is
also
recommended.
11.
Due
to
the
high-frequency
MOSFET
switching
power
supply,
filtering
the
power
cable
is
not
generally
required
(remember
that
the
amp
can't
deliver
full
output
if
the
power
supply
is
restricted.)
Proper
grounding
of
the
signal
source
is
mandatory
for
the
amplifier
to
reach
its
performance
peak.
If
the
RCA
inputs
are
not
grounded
adequately
via
the
signal
source,
electrical
noise
from
the
vehicle
may
be
picked
up
in
the
system.
FIGURE
1a-
AMPLIFIER
CONNECTIONS/CONTROLS-FRONT
(PA400.1/PA600.1/PA1200.1)
PA400.1
PA600.1/PA
1200.1
FIGURE
1b-
REMOTE
Remote-Controls
the
subwoofer
amplifier
gain,
from
a
remote
location
for
ease
of
adjustment
during
listening.
Warning:
DO
NOT
connect
a
level
control
knob
from
other
manufacturers
to
the
Remote
Sub
Level
Control
of
any
Polk
Audio
amplifier.
Even
though
the
connectors
fit
properly,
the
control
knob
and
connector
pin
positions
may
be
differ-
ent
and
the
amplifier
will
be
damaged.
FRONT
PANEL
CONNECTIONS/CONTROLS
1.
RCA
Input Jacks-Accepts
line
level
outputs
from
head
units
or
signal
processors
at
voltages
between
150mV
and
7.5
volts.
2.
RCA
Line
Output
Jacks-These
pass
through
RCA
jacks
can
be
used
to
send
the
input
signal
to
a
second
amplifier.
3.
Slave/Master Switch-Controls
whether
the
amplifier
is
a
slave
or
master
when
connected
in
combined
amplifier
configurations.
(Refer
to
the
Combined
Amplifiers
section
of
this
guide.)
4.
Gain
Control-Controls
the
amplifier's
sensitivity
and
is
used
to
match
the
input
level
of
the
amplifier
to
the
output
level
of
the
signal
source.
8
PA
12V
AMPLIFIERS
o~~~~@
000000
o~~~~@
000000
REMOTE
..........
~-(j)
.....
.....
11---
Phone
Line
Cord
o 0
I_
.....
~-
Remote
Volume
Module
5.
Subsonic Switch-The
subsonic
filter
attenuates
frequencies
below
30Hz
by
24dB
per
octave.
6.
Bass
EO
Switch-Adds
8dB
of
bass
boost
to
the
subwoofer
when
selected.
7.
Remote-Controls
the
subwoofer
amplifier
gain,
from
a
remote
location
for
ease
of
adjustment
during
listening.
Warning:
DO
NOT
connect
a
level
control
knob
from
other
manufacturers
to
the
Remote
Sub
Level
Control
of
any
Polk
Audio
amplifier.
Even
though
the
connectors
fit
properly,
the
control
knob
and
connector
pin
positions
may
be
different
and
the
amplifier
will
be
damaged.
8.
LPF
Control-Controls
low
pass
filter
cutoff
from
30Hz
to
250Hz.