© Pro-Ject Audio Systems · Pro-Ject RPM 1 Carbon / Ortofon 2M Red · Revision 2014.10.8
5
Adjusting the vertical tracking angle (vta)
** Put a record 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 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.
Carefully retighten the screws without applying excessive force (which would deform the arm pillar) – finger
tight is quite sufficient.
Adjusting the azimuth
** 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 if
your needle is not mounted exactly perpendicular to the cartridge body (which is often
the case).
Slacken off the screw just enough to be able to revolve the arm tube without applying
force. Please note: do not remove the 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 you are satisfied that the needle is vertical retighten the screw carefully.
Under no circumstances should the arm tube be adjusted with the needle still in the record groove!
Irreparable damage may be caused to the cantilever suspension! The arm must be lifted to make
each adjustment and lowered afterwards to check it.
Anti-skating force adjustment
The anti-skating force must be adjusted corresponding to the downforce.
The anti-skating mechanism is calibrated from 0 to 5g. The anti-skating force should
correspond with the downforce.
Three examples of magnetic anti-skating mechanism:
a)
Downforce – 1,5g; Anti-skating force 1,5g
b)
Downforce – 1,7g; Anti-skating force 1,7g
c)
Downforce – 2,3g; Anti-skating force 2,3g
