
All power supplies are quasi-regulated.
Q
Protection circuits include short-circuit,
thermal and reverse polarity.
Q
All
muting circuits are optically isolated
from the audio circuits.
High speed rectifiers are employed
pled and
$"
sections
ity.
F(each with its own fuse at the battery) or a
sle from the fuse holder at the battery to a distribution
mock at or near the amplifier's location.
9
Connect
RCA
all line inputs and outputs using hgh-quality
cables.
-mt
....
l
#O
or
#2
RCA-
Output Power
into
2
Ohms
'
Maximum
into
Minimum Speaker
Impendance
IMD
Input Sensitivity
In~ut
Signal-to-Noise Ratio
Size
(I,):
Power
2
Ohms
Imnedance
CH 1-4: 2 OHM
CH 5:
<-Ohm
2
OHM
1
10
Insert fuse@) at the battery fuse holder@).
vel controls to their least sensitive positions and
unit to about the 2 o'clock position, and then set
tuning
of the various controls may
be
necessary
Bass
Fuse
Boost
Rating
High Pass
(hntrol
50 Hz - 185 Hz
I

I
*
FRONT
INPUTS
Set Selector Switch to
Set High Pass Crossovers and Level for Channels
Set
Low
Pass, Bass Boost and Level control as desired for subwoofer.
system
REAR
INPUTS
RCA.
#2
1-4
as desired.
-*+
FRONT
SPEAKERS SPEAKERS
+*-
REAR
WOOFER
FRONT
INPUTS INPUTS USE
REAR
Set Selector Switch to
Set
High
Pass Crossovers and Level for Channels
TO
5TH
OUTPUT ON
EITHER
MIX.
RCA ON
HEAD
P500
UNIT:
1-4
as desired.
Set Low Pass, Bass Boost and Level control as desired for subwoofer.
-Ff-
.-;+r
.
"
FRONT
SPEAKERS
I,
:,
,
.,
REAR
SPEAKERS
WOOFER

bplifier will
power up.
Check for good ground connection.
Check that remote DC terminal has at least 3v DC.
Check that there is battery power on the + terminal.
Check all fuses.
Amplifier(s) gets
very hot.
Check that the minimum speaker impedance for that model
is correct.
Check for speaker shorts.
Check that there is good airflow around the amplifier. In
some applications,
an
external cooling fan may be required.
High hiss in
speakers.
comes on
jnd
Check that Protection
briefly and then
Disconnect
then plug
its inputs. If hiss disappears, go on until the
component is found.
It is best to set the amplifier's input level as insensitive as
possible. The best subjective
Try
possible.
Check for shorts on speaker leads.
Check that the volume control on the head unit is turned
Remove speaker
LED
Check that the leve
of the head unit.
Check
all
in
the component driving the amplifier and unplug
to drive as high a signal level from the head unit as
still comes on,
that
all
LED
is not lit.
repower it.
RCA inputs to the amplifier(s)
leac-set the amplifier.
cross uencies have been
If
it
is lit, shut
-if
SIN
ratio is obtainable this way.
t
amplifier requires servicing.
off
amplifier
hiss
disappears,
faulty/noisy
If
the Protection
Engine noise
(static type)
Engine noise
(alternator
whine)
This is caused primarily by poor quality RCA patch cords
picking up radiated noise. Route all RCA patch cords away
from power wires,
Disconnect
then
plug
its inputs.
component that is causing whine is found.
It is best to set the amplifier's
possible. This also helps to reduce the audible alternator
whine.
in
If
and
use only the best quality patch cords.
all
RCA
inputs to the amplifier - if
the component
the noise disappears, then repeat until the
JVlJi",
'EEC
driving
input
ID
"I
and
the amplifier
level as insensitive as
.
d
noise disap,
and
unplug
4
Mason
1-704
A
orth,
CA
9