Owner`s manual
enemy
of
automotive
electronics
and
the
lower
your
speaker
load,
the
more
heat
is
generated.
For
low-
impedance
speaker
applications
or
restricted
ventilation
installations,
an
external
cooling
fan
may
be
advisable.
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
1-AMPLIFIER
CONNECTIONS/CONTROLS-FRONT
(PA200.4)
PA200.4
@
0000
o
00000
000000
FRONT
PANEL
CONNECTIONS/CONTROLS
1.
RCA
Input Jacks-Accepts
line
level
outputs
from
head
units
or
signal
processors
at
voltages
between
250mV
and
7.5
volts.
(The
PA500A
and
PA
1100.5
also
have
a
Rear
Input)
2.
RCA
Line
Output
Jacks-These
pass-through
RCA
jacks
can
be
used
to
send
the
input
signal
to
a
second
amplifier.
3.
Line
Out
Switch
(PA1100.5~three
positions:
sum
LJR-Ieft
front
and
rear
and
right
front
and
rear
channels
are
summed.
sub
L+R-set
the
switch
to
this
position
when
using
an
additional
PA600.1
amplifier
connected
in
Parallel
mode.
sub
1SD-set
the
switch
to
this
position
when
using
an
additional
PA600.1
amplifier
connected
in
External
Bridge
mode.
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
(front
and
rear
on
PA500A
and
PA
1100.5)
5.
Subsonic
Switch-The
OFF
position
takes
the
filter
out
of
the
system.
the
IN
position
places
the
filter
into
the
system
(PA
1100.5)
6.
Sub
Gain-
Subwoofer
channel
gain
adjustment
7.
Bass
EO
Switch-Adds
8dB
additional
bass
boost
(pA200A
and
PA5004)
Allows
8db
additional
bass
boost
on
the
sub
channel
(PA
11005).
8
PA
12V
AMPLIFIERS
0000
@
00000
0
000000
8.
X-Over
Selection Switch
(HPF,
Flat,
LPF~
The
HPF
attenuates
low
frequencies
and
is
used
with
mid-range
speakers
and
tweeters.
Flat
does
not
attenuate
any
frequencies
and
is
for
full
range
speaker
systems.
LPF
attenuates
high
frequencies
and
is
used
for
subwoofers.
9.
X-Over
Frequency-adjusts
the
crossover
point
(50-500Hz)
for
the
on-board
active
crossover
(PA500A
and
PA
1100.5).
10.
Remote-Optional
accessory
which
allows
the
level
to
be
adjusted
remotely
(usually
located
for
control
by
the
vehicle's
driver).
(PA5004
and
PA
1100.5)
11.
LPF
ControI(PA1100.5~Sets
high
frequency
limit
of
subwoofer
channel.
12.
LED/FAN-Allows
connection
of
an
optional
LED
light
bar
or
optional
cooling
fan
for
the
amplifier.
13.
Status
LED-Will
illuminate
GREEN
to
indicate
the
amplifier
is
on
and
operating
normally,
and
will
be
illuminated
RED
if
the
amplifier
shuts
down
due
to
short
circuit,
DC
offset.
or
overheating
detected
by
onboard
protection
circuitry.
14.
Sub
Inpuf/line Out-selects
RCA
jacks
(4)
(Sub/
Line
Out)
as
either
Subwoofer
Input
or
Line
Output
(PA11005).
15.
Input
Mode
Switch-Selects 2
or
4
channel
operation
(PA200A
and
PA5004).