Installation manual
OWNER'S
MANUAL
Problem
Audio
lacks
punch.
Solution
kern
wired incorrectly,
which
causes cancellation
of
bass frequencies.
k polarity
of
wires
from
amplifier
to
each speaker
as
defined
by
the
! system design.
Problem
Amplifier
fuse
keeps
blowing.
,Solution
I Incorrect wiring or short circuit.
Review
Installation and check
all
wiring
connections.
,Problem
I
Whining
or ticking noise
in
the audio
with
engine
on.
Solution
Amplifier
is
picking
up
alternator
noise
or radiated noise.
Tum
down
input
gain;
move
audio cables
away
from
power wires. Check power and ground
connections on amplifier; install
an
in-line noise filter on source unit's
power
wire;
check alternator and/or voltage regulator; test
for
weak
battery or
add
water
to
battery
PRODUCT
SPECS
APX400.4
Frequency Response
Signal
NOise
Ratio
THD
Input SensitiVity Low Level
Input Sensitivity Speaker Level
Max. Power Output
Cont. Power Output
2-0hm
Stereo Output
Bndged Power
DimenSions
Current Consumption @ Max Power Output
20Hz - 20kHz
>95db
.05% all channels dnven
250mV - 2.5V
500mV - 5V
380w (190 x
2)
200w (50w x4) @.08% THD
90 x 4 @ .8% THD
190
x2@.8%THD
21/8"
H x
81/4"
W x 12" L
46A @ 380 Watts
15










