Download Print this page

Dual 1215 Operating Instructions Manual page 11

Hi-fi automatic turntable

Advertisement

Available languages

Available languages

Fig.
17
During
the
balancing
of
the
tonearm
the
operating switch
must'be
in its
neutral
position, so that the tonearm is disengaged
from the
automatic
mechanism.
To be
sure,
lock
the
tonearm
on
the rest
post,
then
rotate the turntable platter
by
hand, clock-
wise, until
the
operating
lever
returns
to
its
neutral
position.
Setting stylus
force
Once
the
tonearm
is
balanced,
set
the
stylus
force
by
turning
the
stylus
force
dial.
The
force
is
continuously
adjustable
from
zero
to
5.5 grams
with an
accuracy
of
+
0.1 gram.'The unit
will
function
pro-
perly
with
as
little
as 0.5 gram stylus force.
Every
cartridge has
an
optimum
tracking
force, which provides
the
best
reproduc-
tion.
For
the best figure
for
your
cartridge,
consult
the
information provided
with
it.
For
factory-installed cartridges,
you
will
find
all
necessary details
in
a
leaflet
that
accompanies
these
instructions.
Too low a stylus force
produces distortion
in
loud
recorded
passages.
Too high
a
stylus
force can
damage
the
stylus
and
record.
Tracking-balance control
(anti-skating)
Skating
force is
especially
troublesome
in
stereo
records.
The
resulting
inward
pull
on the tonearm results in a higher pressure
against the (inner) groove
wall
than against
the
(outer) wall.
To
compensate
for
this
skating
force
and
eliminate
its effects,
a
very
accurate coun-
terforce
-
accurate in
both
magnitude
and
direction
-
must
be
applied to the
tonearm.
To
compensate
for
anti-skating,
the
unit
has
a precise
anti-skating feature.
The correct
amount
of
anti-skating
is
applied
simultaneously
with
tracking
force
by
means
of a
synchronized
cam.
No
separate
adjustment
is
required.
Cue-control
Your
player
is
equipped
with
a
precise,
jolt-free,
silicone-damped
tonearm
lifting
device.
With this
cue-control,
the
tonearm
can be placed over any spot on
a
record,
then lowered
more gently than
possible
by
hand.
The rate
of
descent
is
independent
of
temperature.
Its
operating lever
has
two
positions:
playing
position
t
lift
position
v ,
in
which
the
tonearm
is
lifted
off
the
record
surface.
A
light
tap
backwards
on the lever starts the
tonearm
descending. The height
of the stylus
above
the
record
in the
!
position
can be
ad-
justed from zero
to
about
6
mm
(t/a")
with
screw
@.
Fig.
19
Pitch-Control
Each
of
the three
standard speeds
(33'l/3,
45 and 78
rpm)
can be varied
about 6/6
(approximately
one
musical'semitone).
The speed can
be
checked
with the
stro-
boscopic
disc
is
illuminated
by
a
light
(preferably
fluorescent)
powered
from
alternating household current,
the ring
of
lines
corresponding
to the
choosen
speed
will
appear
to
stand
still
when
the
turn-
table
is
rotating
at the
correct
speed.
Fig.
20
Pitch
is
varied
by
using
the
pitch-control
knob
@.
Fig.
18
11

Advertisement

loading