HINTS
ON
USE
SPEAKER
POLALITY
If
the
phase
(polarity, viz.
+and-)
of
the
right
and
left
speakers
is
not
co
rre
ct, so
unds
at
the
center
of
the
frequen
cy
ran
ge beco
me
weak.
You
will particularly sense
an
attenuation
of bass.
To
ma
ke
s
ure
that
speaker
polarity is all
right
, play
a
monaural
record
on
a
stereo
record playe
r.
If
the
polarity
is
reversed you will
have
the
result
mentioned
above.
In
such a case, reverse the
polarity of
either
speaker.
(Connect
th
e - lead -
wire
to
+.)
When
both
speakers
are
thu
s
made
to
agree
in polarity, you , will feel as
if
the
so
und
comes o
ut
of a single spea
ker
placed
midway
between the
right
and
left speakers.
FUSE
The
amplifier does riot work
when
th
e fuse is
blown.
In
such a case, disconnect
the
power
cord
and
replace
the
fu
se
on
the
back of
the
amplifi
er~
Use
a 3
-ampere
fuse encased in a glass
tube.
Never
risk
the
dang
er of usi
ng
fine wire
or
a fuse of a
larger
capacity as a substitute.
If
the
fuse
has
burnt
out
because
the
amplifier
is
out
of order, locate
th
e
tr
ouble
and
repair
it before
re
pl
ac
ing
the
fuse.
The
fuse , blows if you
use
an
AC
plug receptacle
lar
ge
r
than
the
' specified
·
capacity
(SO
VA
for t
wo)_
HEAT
GENERATED
BY
AMPLI·
FIER
The
top
of
the
amplifier case becomes considerably
hot
after
many
hours
of
continuous
operation_
But
this
should
not
worry
you
because
air
vents
are
provided
on
the
top
and
back
of
the
case.
If
you
place
something
on
the
amplifier
or
put
it in a closed box,
or
keep
its
front
panel facing
Fig. 1
up, it mi
ght
go o
ut
of order.
CONNECTIONS
Wh
en you connect your
amp
lifi
er
to
a
tape
re
corder
or
tun
er,
be
s
ur
e to use an
adequately
thick shield ed wires.
If
you use
untwi
sted vinyl
cord like those used for lights, you will suffer
from
hum
.
Furthermore,
do n
ot
,use a
wire
longer
th
an
2 meters
(about
6.5 ft.), bec
ause
the
lon
ger
the
co
nn
ecting
wire
is,
th
e greater the a
ttenuation
of
tr
eble beco
me
s.
For
connection to a
tuner
or
FM
adap
tor, use a
wire
1 to 1.5 m
ete
rs
(about
3.3 to 4.S ft.) long.
When
you use
the
amplifier
f
or
mo
naur
al
reproduction,
it is easier for
operation
to use
th
e
upp
er
R terminal for
connec
tion.
Be
s
ur
e to set
th
e
"MODE"
switch to the
conne
cted
ch
anne
l.
HUM
AND
HOWLING
Wh
en
you
pl
ay a
re
cord or
tap
e, you
may
some-
time
s h
ear
unpleasant
hummin
g or howling.
This
,does not
mean
th
at
y
our
amplifi
er
is defec
ti
ve.
In
mo
st cases,
hummi
ng
or howling
is
a result
of these causes:
If
you
place a r
ecord
player
0
11
or
near
th
e
speaker
box,
th
e vibrations of
th
e spea
ker
cabinet
caused
by
the
sound
waves
from the s
peaker
a
re
tran
s
mitted
to the
player
and
cause howling.
To
prevent
this, keep
the
record
player
away
from
the
speaker
cabin
et
or
put
a thick cus
hion
be-
tween
the
player
and
the
cabinet.
A low, buzzing
sound
wjll also
be
produced if you
do
not
use shielded wires for connection.
If
this
is
not
the
cause, exami
ne
the co
nnections
closely.
Make
sure
that
the
earth
and
live
end~
are
not
reversed so
th
at
the
motor
and
arm
a
re
inade-
quately
grounded.
-
16
-
CONNECT
PERLY
LEADWIRES
Fig
. 2
PRO·
Connect
lead wires properly to
the
s
peaker
an
d
oth
er
input
and
output
termin
al
s.
If
co
nnections
are
loose
or
touch
other
parts, yo
ur
amplifier will
not wo
rk
properly.
Moreover,
it
may
produce
noise.
If
you use
your
amplifier in s
uch
a
way
for a
long
time, it
ma
y eve
ntu
a
ll
y
break
down.
Fin
ally,
read
the
ins
truction
s for yo
ur
tuner
or
tape
recorder
carefully before you co
nnect
it to
yo
ur
amplifier.
LEVEL
METER
SWITCH
Thi
s
is
used to select
th
e most suitable
meter
sensitivity from
th
e
thr
ee
ranges
of 5, 10
and
25
watts.
The
variable
sensitivity is
intended
to
mak
e it easier to
watch
needle movem
en
t.
high:
up
to 5
watts
medium:
up
to 10
watt
s
lo\\':
up
to 25
watts
(maximum
o
utput)
Choose
the
approp
ri
ate
ran
ge
acco
rding
to
volume
l
eve
l you
want.
AC
OUTLET
The
AC
OlJtlets
on
the
back
panel
are
connected
or
disco
nnected
by
the
power
switch
on
the
front
panel.
The
total
capacity
is
SOV
A-30VA
and
another
50VA-
Be
sure
to
lise
them
within
the
limit.
WHERE
TO
BE
PLACED
The
amplifier should be installed to
the
place
as
given
below:
1.
Easy
to
ground;
2.
Floor
not
vibrated;
3.
Not
wet
and
dusty;
4.
Not
exposed to
the
sun;
5.
Well
ventilated.
-
16
-
Fig.
3
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