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'SETTING STYLUS FORCE
T Move the stylus force weight so that its
Centre line is at 0 on the tonearm and the
magnetic shield (diagram 14) 80 that its red
Tine is at 0 on botn scales,
2 With the cartridge fitted, remove the stylus
guard and move the tonearm locking lever
fo FREE and move the tonearm inwards so
that it pivois freely. Take care to provent the
stylus from touching the rubber mat.
3 Wing the counterbalance weight backwards
fF forward until the tonearm is in balance
TONEARM ANTISKATING DEVICE
'An anti-skating control is necessary to offset
'the normal tendency of the tongarm to move
(skate) across the record toward the centre
As the record revolves, with the arm tracking,
'an inward skating force is created, which must
'be counteracted by an equal force in the
'opposite direction. This minimises wear on the
inner side of the groove, premature damage to
the record, and sound distortion. The skating
force is directly rolated to the stylus force sot
for the cartridge.
'The simple but ingenious anti-skating control
utiizes the wellknown magnetic principle that
like poles repel each other. This results in the
elimination of mechanical linkage. A ceramic
disc magnet is mounted on the pivoting tone-
farm gimbal and another affixed above it on the
Calibrated tonearm pivot bracket. A ferrous
metal shield, slides between the two magnets,
to sot the ant-skating force desired. When the
shiold is between the to!al areas of the mag
with the stylus tip at the height of the top
face of one record on the platter.
4 Return tho tonoarm to ite rest, and move the
locking lever to LOCK.
5 Set the stylus force to that recommended by
the cartridge manulacturer by moving tho
stylus force weight forward unt its centre
Tine ip at the mark on the tonearm ecalo
representing this force. The scale is cal-
brated up to 3 grammes in steps of |
'oramme.
nets, they have no effect on each other, since
the shield blocks the magnetic
flux. Hi
1a the shield
is moved outward, it exposes
the
magnetic field, creating a controllable amount
fof magnetic ropulsion. This, in tim, exerts. a
measurable torsional force on the tonearm, as
the two magnetic poles push
apart, creating
the correct amount of antiskating force
desired, as indicated on the roading scale.
SETTING THE DEVICE
1 For a cartridge with a conical (spherical)
'stylus t i p . Move the magnetic shield along
the transparent tonearm mounting bracket
until the red calibration line on the shield
is ata pasition on the 'conical' scale cor
responding to the stylus force. If, say, 2
(grammes stylus force has already bean sel,
'move the slider to the figure 2 on the scale
2 For a cartridge with an elliptical stylus tip.
Proceed in the same way, but use the
'elliptical' scale on the bracket.
| orem 19 Sting srs Force
igre 14 Gating Tonarm Atataing Bove
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