12
9
4
CHANNEL
AMPLIFIER
APPLICATIONS
PLA4278
/
PLA4478
4-
CHANNEL
MODE
CM1
CHI
CHI
CHI
] - 11 0 , ,,,, ] - 11
Oh
..
, ] -11
Oh
..
, 2- 11
Oh
..
,
2
CHANNEL
AMPLIFIER
-
APPLICATIONS
INPUT
CONNECTIONS
* This
am
plifier
has
RCA
connections for low level
in
pu
ts
.
Low
level signal is carried
through
RCA
cab
les.
it
is preferred
to
use l
ow
level inputs
to
the
amplifier if
the
head
unit
is
equipped with
the
low level outputs.
* This amplifier has high input connection. High level input is used
from
radios that
do
nol
have
line
-
level
outputs.
* Be
sure
not
to u
se
bo
th
l
ow
an
d hi
gh
l
ev
el
i
npu
ts
si
multan
eo
usly
!
SPEAKER
OUTPUT
CONNECTIONS
You
do
nol need
to
make
any adjustment for the input
co
nnection of amplifier before
you
connect
the
speaker output.
* Connect right
and
left speaker wire
to
corresponding speaker output terminals of
the
amplifier.
*
Be
sure
to
have
the
positive wi
re
from
the
speaker
to
the
positive speaker terminal
of
the
amplifier
and
the negative wire
from
the
speaker must connect with
the
speaker
terminal of the
amp
lifier. Reversing a
ny
of these connections will result
in
the
speaker
cones moving out of phase which causes bass cancellation.
LEVEL
CONTROLS
T
urn
the
VO
L
UM
E control
on
the
amplifier to
Min
initially.
Once
the
initial
pow
er sequence has been performed, set the
CD
/ RAD
IO
volume
control to roughly
80
% of
fu
ll. Insert a
CD
or tune
to
a radio station
and
sl
ow
ly turn
up
the
amplifier V
OLUME
control until
you
hear
some
distortion,
and
then back it off
for cl
ean
sound.
-
~
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General
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