Pro-Ject Audio Systems Pro-Ject 9cc Evolution - Manual (Page 4)

© Audio Trade GmbH · Tonarms Pro-Ject 9cc Evo, 10cc Evo and 12cc Evo · Revision 2014.4.1
4
Cartridge downforce adjustment
Remove the transport lock (4a) from the tonearm tube (3). Store it in the original packaging so they are
available for any future transportation.
Pushing carefully, turn the counterweight (8) onto the rear end of the tonearm tube (3), so that the downforce
scale (8a) shows towards the front of the player. Lower the armlift and position the cartridge in the space
between arm rest and platter. Carefully rotate the counterweight (8) until the armtube balances out. The arm
should return to the balanced position if it is moved up or down. This adjustment must be done carefully. Do
not forget to remove the cartridge protection cap if fitted.
Once the arm is correctly balanced return it to the rest. Hold the counterweight (8) without moving it, and gently
revolve the downforce scale ring (8a) until the zero is in line with the anti-skating prong (9). 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.
Adjust the downforce prior to installing the anti-skating weight.
For further information on supplied and optional counterweights see the last page.
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 tube (3) 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 (3) without
applying force. Note! Do not remove the screw completely!
Maden-
schraube
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.
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 according to the mass of the cartridge as follows:
Pro-Ject 9cc Evolution and Pro-Ject 10cc Evolution
Downforce Groove in the stub (9)
10 - 14mN 1 st from bearing rings
15 - 19mN 2 nd " " "
20mN and bigger 3 rd " " "
9
Pro-Ject 12cc Evolution
Downforce Groove in the stub (9)
8 - 11mN 1 st from bearing rings
12 - 14mN 2 nd " " "
15mN and bigger 3 rd " " "
9
Hang the loop of the thread of the anti-skating weight (7) in the groove of the anti-skating stub (9) corresponding
to the downforce applied to your cartridge and hang the thread in the groove of the wire support (6).
Adjusting the vertical tracking
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 arm tube (3) of the tonearm should be parallel to the surface of the record.
If it is not loosen both hexagon screws in the tonearm base (10) 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 both hexagon screws without applying excessive force (which would deform the arm pillar)
– finger tight is quite sufficient.