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Cartridge downforce adjustment
The supplied counterweights (5) is suitable for cartridges weighing between 6 - 10g (counterweight no.
16). Alternative counterweights for cartridges weighing between 11 - 15g (counterweight no. 3), 8 -
11g (counterweight no. 2) or 5 - 8g (counterweight no. 9) are available as accessory part. Adjust the
downforce before installing the anti-skating weight.
Following adjustments have to be done very carefully. Remove cartridge protection cap. Push and turn
the counterweight (5) carefully on the rear end of the tonearm tube (8), so that the downforce scale
(5a) shows towards the front of the player. Lower the armlift and position the cartridge in the space
between arm rest and platter. Rotate the counterweight (5) until the arm tube is balanced. The arm
should return to the balanced position if it is moved up or down.
Once the arm is balanced correctly return it to the rest. Hold the counterweight (5) without moving it and
gently revolve the downforce scale ring (5a) until the zero is in line with the anti-skating stub (12). Check
whether the arm still balances out.
Rotate the counterweight counter clockwise (seen from the front) to adjust the downforce according
to the cartridge manufacturer's recommendations. One mark on the scale represents 1 mN (= 0,1g /
0,1 Pond) of downforce.
Adjusting the vertical tracking angle (vta)
Put a record and the record weight on the platter. When the needle is lowered into the record groove and
the tonearm is not resting on the lift arm, the tube of the tonearm should be parallel to the surface of the
record.
If it is not, loosen both hexagon screws in the tonearm base just enough to allow vertical movement of
the arm pillar without force and slide the arm up or down until it is parallel.
Retighten the hexagon screws without applying excessive force (which would deform the arm pillar) –
finger tight is quite sufficient.
Anti-skating force adjustment
The cartridge needle must be vertical in the record
groove in order to trace the groove wall modulations
correctly.
A small screw at the bearing end of the arm allows
incorrect azimuth to be corrected.
Slacken off the screw just enough to be able to revolve
the arm tube without applying force. Note! Do not
remove this screw completely!
With the aid of a good magnifying glass adjust the needle until it is vertical in the groove (i.e.
perpendicular to the record's surface). Ideally this should correspond to the top surface of the
cartridge body being parallel to the record surface.
When the needle is vertical, retighten the screw carefully.
Under no circumstXnces should the Xrm tube be Xdjusted with the needle still in the record
groove! IrrepXrXble dXmXge mXy be cXused to the cXntilever suspension! The Xrm must be lifted
to mXke eXch Xdjustment Xnd lowered XfterwXrds to check it.
© Pro-Ject Audio Systems · Pro-Ject 2
X
perience Primary· Revision 2018.03.08
5
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