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Idiomas disponibles
Example:
desired
force
is
4-1/4
grams
1,
Balance
the tonearm
2.
Turn the
washer
@
on
the
rear
of
the
tonearm counterbalance
until the
mark
is
on
top.
3. Turn
the
counterbalance
3 full
turns
counterclockwise
until the
mark
is
once
again
on
top.
Check: the
tonearm,
formerly
balanced,
should now
sink
toward
the
rest
or
the
re-
cord
surface,
4.
Set
the
stylus
force dial
to
2-314
grams.
Anti-skating
To
compensate
for
skating
force,
an
equal
and
opposite
force
must be applied
to
the
tone-
arm. The anti-skating
mechanism
of
the
Dual
1229
Iulfills
this
reQuirement.
The
adjustment
knob on the
chassis allows
changing
the
skating compensation force
even
while
a
record
is
playing,
which
is
useful when
changing
from
a
dry
record surface
to
one
that
has been wetted.
Two
different
sets
of
calibrations
are
pro-
vided
for
the
two
types
of
styli
commonly
in
use
today.
Red
scale:
for
spherical (conical)
styli with
1
5 pm
tips
according
to
D
I
N
45
50O.
White
scale:
for
biradial (elliptical) styli with
radiuses
of
5
to
8
pm
by
18
to
22 pm.
Set
the
anti-skating
knob
to
the
number
on
the
appropriate
scale
which
corresponds
to
the
stylus
force
you
have
set.
That
is,
for
a
stylus force
of
1.2
grams,
set
the
knob
at
"1.2".
For other stylus
tip
diameters,
choose
the correct anti-skating setting
from
this table.
Tracking
Anti-skating
compensation
force
for
stylus
radii in
microns
"p"
I
1't
"13
15
Tracking
Anti-skating
compensation
force
for
stylus radii
in
microns
"p"
17 1e
?jl?lF?!
0,5
1,0
1,5
2r0
2,5
3,0
3,5
4,0
4,5
5,0
0,45
0,95
1,45
1,95
2,45
2,95
3,45
3,95
4,40
4,90
0,40
0,90
1,40
1,90
2,40
2,90
3,35
3,85
4,30
4,80
0,5
1,0
1,5
2,0
2,5
3,0
Fis.
17
Precise
tonearm
balance
is
most
important
for
cartridges
with
low
stylus forces.
Balan-
cing
need
be
done
only
once,
unless
the
cartridge
is
changed.
Setting stylus
force
Once
the tonearm
is balanced,
stylus force
is
set
to
the
recommended
value
for
the
cartrid-
ge
by
turning the
stylus
force dial.
Stylus
force can be
set
to
any
value
from
zero
to
3
grams.
From 0
to
1.5 grams:
1
scale
division = 0.1
gram
From
1.5
to
3 grams:
1
scale
division
=
O.25 gram
The
Dual
1229
is
designed
to
operate
with
stylus forces
from
O.25
gram
up.
Every cartridge
will
give
optimum
reproduc-
tion
at
a
particular
stylus force,
See
the
instruction
sheet
supplied
with
your
Fig
19
cartridge,
When playing
records
wet,
skating
force
is
reduced
by
approximately
10
o/o.
We
recom-
mend, therefore,
a
correspoÄding
10
7o
de-
crease
in anti-skating compensation.
Mode Selector
Knob
at "single"
(single
=
normal setting
for
playing
single
re-
cords)
Knob
at
"multi"
(multi =
setting
for
automatic
record
changer
ope
rat
io
n
)
Fig.20
Through
the
"Mode
Selector"
design,
the
Dual 1229
provides
a
no-compromise
solu-
tion to the problem
of
maintaining the correct
vertical
tracking angle
during
operation
as
a
single-play
turntable
oi
as
a
record
changer.
When
the
unit
is
set
for
single-play operation,
the
tonearm
is
perfectly horizontal.
When
the "mode" is
changed
for
changer
operation,
the entire
tonearm
assembly,
and
the
tonearm
itself
,
are
lifted
by 5
mm.
ln
this
way,
the
unit
is adapted
for
record
changer
operalion and
the
tracking angle
is
correct
at
the
center
of a
stack
of 6
re-
cords.
To
prevent operation
in
the
wrong
mode,
changer
operation
is
possible
only with
the
Mode Selector
in "multi".
That
is,
with
the
Mode Selector
in the
"single"
position, a
re-
cord
will
not
be dropped
from
the
spindle,
nor
will
the
tonearm
lift off
the
rest
and
onto the
record.
Fig.
18
Too
low a
stylus
force
will
cause
distortion
in
loudly
recorded
passages.
lf
the
force
is
too
high,
needless
wear
to
the
stylus
and
record
can be caused.
lf
stylus forces
greater
than
3
grams
are
required
they
can be
obtained
by
turning
the
counterweight,
one
full
turn
of
the
counter-
weight counterclockwise
(viewed
from front)
increases
the stylus
force by
0.5 gram.
0,5
1,0
1,5
2,0
2,5
3,0
3,5
4,0
4,5
5,0
0,70
0,60
1,15
1,10
1,75
1,65
2,30
2,15
2,90
2,65
3,45
3,20
4J0
3,75
4,80
4,30
5,50
4,90
5,50
0,55
0,5
1
,05
1,0
1
,55
1,5
2,O5
2,0
2,55
2,5
3,05
3,0
3,55
3,5
4,10
4,O
4,60
4,5
5,15
5,0
11
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