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.11
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t:
Balancinq
the tonearm
Precise
tonearm
balancing
is
important,
above
all
for
cartridges
with
a
low stylus
pressure.
The
tonearm
needs
only
be
balanced
once. However,
it
is
recommended
to
check the tonearm
balance
from
time
to
tirne.
The tonearm is
balanced
if it
remains
in
a
horizontal
position
when
suspended
freely
(moved
inward
from
its
resting
post)
and
if
it
returns
to
this horizontal position
if
pushed upwards
or
downwards.
Shifting the
counterbalance
(1) on
its shaft
balances
the
tone-
arm
coarsely;
turning the
front
knurled ring
of
the
counter-
balance
weight (1)
balances
the tonearm exactly.
1.
Set
the
tracking force (4)
to 0
and
the
anti-skating
device
(6)
to
"ott"
(pointer
to
left).
2.
Unlock
the
tonearm and
pivot
it
towards
the
centre
of
the
platter
over
the tonearm
rest.
Pressthe
LIFT
v
bulton
(11).
3.
lf
the
tonearm
does
not
return
to
a
horizontal
position
on
its
own,
release
the
locking
screw
(2)
and
shift
the
counter-
balance
with
the stem
until you
have
an
approximate
balan-
ce. The stem
of
the
counterbalance should
then
be
locked
by tightening the locking
screw.
4.
Now
f
ind
the
exact balance
by turning the
front
knurled
ring
of the counterweight.
Setting
tracking force
Each
cartridge
requires
a
certain tracking force
with
which
op-
timum
reproduction
is
obtained.
lf
you
purchased
your
Dual
with
a
factory-mounted cartridge,
you
will
f
ind
this
specifica-
tion for
the
fitted
cartridqe
on
the
enclosed data
sheet.
When
the tonearm
has
been
exactly
balanced,
the
tracking force
necessary
for
the
cartridge
is set
by
turning the tracking force
scale
(4).
Tht
tracking force
can
be continuously
set
within
the
range
from
0
to
20 mN
(0
2
g)
, whereby
the digits
on
the
scale
represent
the following.
1=
10mN41S
2--zOmN42g
A
graduation ftrark
in
the
range
from2
-
15
mN
(0.2
-
i.5
g)
is
equivalent
to this
1
mN
(0.1
g).
The unit works
rel
iably
from a
tracking
force
of
2.5
mN
(0.25 g) onwards.
Anti-skating
The skating
force
acting upon any tonearm
leads
to
one-sided
wear
of
the
stylus and
record and
can
cause
distorted
repro-
d
uction.
For
stylus types generally
available nowadays,
separate
setting
scales
are available
in
accordance
with the
printed
symbols:
O
Setting
for
spherical
styli.
o
Setting
for
biradial
(elliptical)styli.
Adjustment
of
the
anti-skating device
should be
carrted out
to
match
the setting
of
the
stylus
pressure:
Tracking force
setting
Antiskat
ing
12.5
mN
L
1
.25
p
15
mN
A
i 5
p
20 mN42.0
p
The skating
force
is
reduced
by
approximately 1/3 in the
case
of "wet"
playing (playing
records moistened
with
liquid).
The antiskating device
is
switched
off
when
the pointer
is
set
to
the left.
Fitting the
cover
lnsert
the
cover
into
the
slots on
the
two
hinges
(3)
located
on
the
chassis.
lt will
be easier
to
insert
or
remove
the
cover
if
the
slots on
the
cover
hinges are
ln
a
vertical position.
The
cover
will
remain
in
any desired position when
opened
a
few
centimeters.
lf
it
should
become
necessarV
to
reset
the
spring
pressure
that
maintains the cover
in
position,
this
may be done
by
rotating
the
screws accessible
at
the
rear
of the
unit
(Fig.
4)
:
Rotating
the
screws clockwise
-
increases
the
spring
pressure
Fiotatinq
the
screws counterclockwise
-
decreases
the
spring
Pressure.
Connection
to
the AC
suPPlY
Depending
upon the
voltage
rating
on
the
nameplate,
the
turn'
table
is set
either
to
a
voltage
of
220
-
24O
V
150
or 60
Hz
or
to110-125V1500r60H2
Resetting
the
mains
voltage must
only
be
carried
out
by
your
dealer
or
by
an
authorized Dual
seruicing
agent.
The
unit
may also
be
connected
to
the
jacks
provided
on
suitably
equi
pped
amplifiers.
Connection to the amplif
ier
Connect
the
cartridge
lead
equipped
with
RCA
(cynch)
plugs
to
the
phono magnet
input
of
the amplifier
(black
=
right
channel
, white
=
left
channel). Connect
the
one
wire
equipped
with
the
cable
bracket
or
screw
it
under
the
clamp
marked
"GND"
on
the
rear
of
the
amPlif ier.
lf
your
receiver
or
arnplifier
is
designed
{or
DIN
jacks,
your
dealer may convert
your unit with the
cartridge lead pro'
vided
with
a
DIN
plug,
1.10 m long, available
as
a special
acces-
sory, item
no.20l
303.
Setting up and operation
Before playing
the
first
record
or
if
you
have
transported
the
turntable,
please
adjust
the
pickup
arm
return
mechanism
as
f
ollows:
1
.
Release
the pickup
arm
and
raise
it
by
pressing
button
^
(10).
2.
Swing
the
arm
to
the center
of the
turntable.
(The arm
will
return
automatical
ly).
Select
platter
speed,
33
1/3 (15)
or45
rpm
(16),by
presslng
the
relevant
button then
unlock tonearm, move
stylus
tip
protector
upwards.
Now
remove
tonearm
from
post and swing
it
over
the
record.
After the
tonearm
has been swung
over
the
record
or
placed
on
the
tonearm rest the
turntable platter
automatically
starts
to
rotate. The
recorä
on
the platter
can
be
cleaned
(with
an
antistatic
cloth etc.)
when
the
tonearm is
in
the
rest
position.
When
the
tonearm
reaches
the
record diameter
of
30
cm
or
1J cm
a
detent
is
perceptible.
This
indicates
the
correct
set-
down
point for
the
diamond
to
the
lead-in groove
of
the record.
This
aid
for
the correct setting
of
the tonearm
may
be
switched
off
ln
order
to
lower
the
tonearm
to
a specific position
of
the
record
press
button
v
(11)
After
playing
the
record
the
tonearm
will
automatical
ly lift,
be returned
to
the
tonearm post and
the
unit
will
switch off.
We suggest
you
flap
down the
styltts guard
after
play.
1.25
1A
2
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