Dual 1229 - Technical Information; Preamplifier Requirements; Cartridge Installation; Balancing the Tonearm

Secure
the spindle or
column*
in
place
by
pressing
down on
it and turning
it
to
the
right
until
it stops.
Load
up
1o 6
records
of
the
same size and
speed on
the spindle or column".
Fig.
1 1
Move
the operating
switch
to
"start",
This
will cause
the
first
record
to drop
and
the
tonearm to
be
set down
in the run-in
groove,
Should
you
want
to
interrupt any
record and
cause the
next
to drop,
move the operatino
switch
to
"start".
Note:
Records already
played
can
be
lifted
back onto
the spindle
platform
for
replay or
removed
entirely. The
spindle need not be
removed.
*
The
optional
accessory changer column
AS 12 can
be
obtained at
your
dealer's.
Automatic
repeat
Fis.
12
lnsert and lock
the
changer spindle
in
the
turntable shaft,
and,
after
placing
the desired
record on
the turntable, set
the 45-rpm
adapter
disc onto the
spindle. lf necessary,
weigh
it
with
a 7-inch record. Set
the
record-
size selector
@
and
start the
unit
manually
or automatically.
The record
will be repeated
until
you
shut the unit off.
10
Technical
lnformation
Cartridge
The following
instructions
apply
onlv
if
vour
automatic
turntable
was
purbhased
riitnoLt
a
cartridge
installed.
5. lnstall
the cartridge
holder from
under-
neath
the
tonearm head, and
lock
it
in
place
by moving
the
finger
lift toward
the
front
of
the unit,
to
its
normal
position.
left channel
(white)
-L
left
ground (blue)
_L
right
ground (green)
Fig. 15
After
completing
the
installation,
check
the
height of
the stylus
above
the
record
in the
:
position,
and
also
the
set-down
position
at
the edge
of
the record.
(See
the
section
titled Cue
Control
on
page
1 2, and
the section
Adjusting
the
Tonearm
Set-down
point
on
page
12.
Balancing
the tonearm
Coarse
balancing of
the
tonearm
is
accomplis-
hed by
sliding
the counterweight
on
its
shaft; fine
balancing
is
done by locking
the
shaft, then turning
the counterweight,
'1.
Set the stylus force
dial
at
"0"
(zero).
2. Unlock
the tonearm and
lift
it
off
the rest.
3. lf the
tonearm does
not come
to rest
horizontally,
loosen setscrew
(F)
and
slide
the
weight
with
its
shaft
until
you
achieve
appro-
ximate
balance.
Then retighten
the
setscrew,
4. Now find
the exact balance
by
turning
the
counterweight.
The
tonearm
is exactly
balanced
when edge
"A"
on
the
side
of
the
tonearm
is at
precisely
the same
height as
edge
"8"
on
the tonearm
rest
(Fig.
17),
or
when the tonearm,
nudged
lightly
up or
down, returns
by
itself to
a
horizontal
po-
sition.
During this
operation
the operating
switch
must be
in
its
neutral
position
so
that
the
tonearm
is disengaged from
the automatic
mechanism.
This
can
be
checked
Simply
but
turning
the
platter
by hand clockwise
until
the operating
switch returns
to
its neutral
position.
This
model
will accept
any cartridge
weighing
from
1
to
'1
2
grams
and
having
l/2"
spaced
mounting
holes.
1. To release
the cartridge
holder,
move
the
tonearm finger
lift
toward
the rear.
While
you
do this, hold
the cartridge,
because
it
will
fall
when
you
unlock
ir.
2. Mount
the cartridge
in the holder.
lt is
important to mount
it
in the
correct
position.
For
that
purpose,
use
the hardware
supplied
with the
turntable and cartridge
lspacers,
nuts, screws
and
gauge,
3. The cartridge
is
correctly
mounted
when
the notch
in the
gauge
encloses
the
stylus
tip,
and
when the stylus
tip
is situated vertically
within area
{A)
(Fig.
14).
4. The cartridge
pins
are
marked,
and the
connecting
leads are color-coded
(Fig.
15).
Connect
the Ieads
to
the
corresponding
pins
on
the cartridge,
Fig.
13
Fig.
16
Fig. 14