Pro-Ject Audio Systems Pro-Ject Xtension 12 Evolution User Manual
Page 6
© Audio Trade GmbH · Pro-Ject
X
tension 12 Evolution /
X
tension Ortofon RS-309D/AS-309S · Revision 2012.8.1
6
Adjusting the azimuth (Pro-Ject Evolution tonearms)
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. Note! Do not remove the screw completely!
Screw
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, but in practice this is often not the case.
When you are satisfied that the needle is vertical retighten the screw carefully.
Please note: 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 (Pro-Ject Evolution tonearms)
The anti-skating force must be adjusted corresponding to the downforce as follows:
Downforce
Groove in the stub (8)
10 - 14mN
1
st
from bearing rings
15 - 19mN
2
nd
" " "
20mN and bigger
3
rd
" " "
2
3
1
8
Hang the loop of the thread of the anti-skating weight (5) in the groove of the anti-skating stub (8) corresponding
to the downforce applied to your cartridge and hang the thread in the groove of the wire support (6).
Adjusting the vertical tracking angle -vta- (Pro-Ject Evolution tonearms)
Put a record on the platter. When the needle is lowered into the record groove and the tonearm is not resting
on the tonearm rest (3), the tube (2) of the tonearm should be parallel to the surface of the record.
If it is not loosen both hexagon screws in the tonearm base (9) 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 hexagon screws without applying excessive force (which would deform the arm pillar)
– finger tight is quite sufficient.