Dual CS 522 - Balancing the Tonearm; Setting Stylus Pressure; Continuous Automatic Play; Stylus Anti-Theft Lock

6. Continuous automatic play
Turn knob (7) to Πposition. After playing the record the
tonearm returns automatically to the lead-in groove of the re-
cord. The record will be played again. This procedure will be
repeated until cancelled by pushing the switch to “stop” or
the turning knob is brought back to the single play position.
Note: For records with other diameters, such as 25 cm records,
the unit is operated manually. See Section “2. Manual start”
After the record has been played, shut-off and tonearm return
is automatic irrespective of having started the unit manually or
automatically. The tonearm should then be locked and the stylus
tip protector moved down again.
Technical information
Cartridge and stylus
Please refer to the “Information on your unit's cartridge”, en-
closed with these instructions for use.
Installation of a cartridge with 1/2”
standard attachment (see page 3)
Depending on the unit type purchased, the assembly acces-
sories for 1/2” cartridges can consist of special accessories
which do not form part of the unit's standard equipment.
The tonearm of your Dual HiFi turntable is designed for HiFi
magnetic cartridges with an intrinsic weight of 4.5 to 10 g in-
cluding attachment material and 1/2” standard attachment.
Should you wish to install a different cartridge, proceed as
follows:
1. If necessary, remove the locking screw (Fig. 4/s).
2. Remove the cartridge by turning the attachment screw (13)
in anticlockwise direction. At the same time, hold the cartrid-
ge as otherwise it will drop from the mount (Fig. 5). Remove
the tonearm lines from the contact pins of the cartridge.
3.
Attach
the
1/2”
cartridge
to
the
mounting
plate
with
the
aid
of
the
cartridge
installation
gauge
and
using
the
accessories
enclosed
with
the
cartridge.
This
has
been
correctly
instal-
led
if
the
tip
of
the
stylus
—
viewed
from
above
— is
in the
V-shape
recess
of
the
cartridge
installation
gauge.
Viewed
from
the
side,
the
stylus
must
be
in
the
area
of
the
rectan-
gular
recess
(Fig.
7).
4.
Connect
the
connections
of
the
tonearm
head
to
the
con-
necting
pins
on
the
cartridge.
The
connections
are
colour-
coded:
Red R right hand channel
Green RG right hand channel earth
Blue LG left hand channel earth
White L left hand channel
5. Place the mounting plate with the mounted cartridge onto
the tonearm head and — by turning the attachment screw
(13) in clockwise direction — secure this.
6. Unscrew the plastic cover on the rear of the tonearm
counterweight and screw on the additional mass enclo-
sed with the accessories
7. Now once again carefully balance the tonearm — as described
in the section on “balancing the tonearm”.
After completing the installation of the cartridge, check the
height of the stylus tip above the record with the cue control
in ¥ position and the set-down position of the stylus in the
lead-in groove of the record. See, "2. Manual start”, page 14,
and "Adjustment of tonearm indexing", page 16.
Stylus
The stylus is subjected to natural wear and tear during normal
playing. Therefore, we recommend you to occasionally check the
stylus and, in the case of diamond styli, this should be carried
out after approximately 300 playing hours. Your specialist
dealer will be pleased to do this for you free of charge. Worn
or damaged (splintered) styli chisel the modulation from the
grooves and destroy records. Therefore, only use as replacement
the stylus types recommended in the technical data of the
cartridge. Copied styli result in audible quality losses and in-
creased wear and tear of records. Please remember that, for
physical reasons, the stylus holder with the diamond stylus is
extremely fine and must therefore be necessarily sensitive to
impacts, shocks or uncontrolled movement. To have the stylus
tested by a trade dealer, you only need to remove the stylus
as described in the following paragraph.
Stylus anti-theft lock
The stylus is safeguarded against unauthorised removal by
means of a grub screw on the left hand side beside the system
attachment screw (13) on the cartridge mount (Fig. 4/S). If
you wish to remove the stylus, unscrew its grub screw and
swivel the tonearm grip (12) backwards. You can now pull
out the stylus to the front at a slight inclination.
Balancing the tonearm
Precise tonearm balancing is important, above all for cartridges
with a low stylus pressure. The tonearm need only be balanced
once. However, it is recommended to check the tonearm balance
from time to time.
The tonearm is balanced if it remains in a horizontal position
when suspended freely and if it returns to this horizontal posi-
tion if pushed upwards or downwards.
Shifting the counterbalance (1) on its shaft balance the tone-
arm coarsely; turning the knurled ring of the counterbalance
weight balances the tonearm exactly
1. With the tonearm still locked on the arm support, turn the
turntable a few revolutions in a clockwise direction by hand
2. Set the tracking force (3) and anti-skating (5) controls to
"zero" (with the pointer L/H). Unlock the tonearm and
move it over the tonearm rest.
3. If 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 find the exact balance by turning the knurled ring of
the counterweight.
5. Set the stylus pressure and anti-skating:
Setting stylus pressure
Each cartridge requires a certain stylus pressure with which op-
timum reproduction is obtained. You will find this specification
for the fitted cartridge on the enclosed data sheet.
If the tonearm has been exactly balanced, the stylus pressure
necessary for the cartridge is set by turning the stylus pressure
scale (3). The stylus pressure can be continuously set within
the range from О to 30 mN (О - 3 g), whereby the digits on
the scale represent the following
1 = 10mN A 1g
2 = 20mN A 2g
3 = 30mN A 3g
A graduation mark in the range from 2 - 15 mN is analogous to
this (0.2 - 1.5 g) 1 mN (0.1 g).
The unit works reliably from a stylus pressure of 5 mN (0.5 g)
onwards.
Anti-skating
The
skating
force
acting
upon
each
tonearm
leads
to
one-sided
wear
and
tear
of
the
stylus
and
record
and
can
cause
distorted
reproduction.
15