Pro-Ject Audio Systems Pro-Ject 6PerspeX - Manual (Page 5)

© Audio Trade GmbH · Pro-Ject 6 Perspe X · Revision 2012.7.1
5
Cartridge downforce adjustment
The counterweights (6) supplied are suitable for cartridges weighing between 5 - 7,5g (counterweight no. 28),
7 - 10g (counterweight no. 46), 9 - 11g (counterweight no. 43) or 10 - 14g (counterweight no. 29).
Adjust the downforce prior to installing the anti-skating weight.
Pushing carefully, turn the counterweight (6) onto the rear end of the tonearm tube (9), so that the downforce
scale (6a) 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 (6) 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 (6) without moving it, and gently
revolve the downforce scale ring (6a) until the zero is in line with the anti-skating stub (15). 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 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. 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.
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 as follows:
Downforce
Groove in the stub (15)
10 - 14mN 1 st from bearing rings
15 - 19mN 2 nd " " "
20mN and bigger 3 rd " " "
Hang the loop of the thread of the anti-skating weight in the groove of the anti-skating stub (15) corresponding
to the downforce applied to your cartridge and hang the thread in the groove of the wire support (17).
Changing replay speed
Using the accessory tool provided (3a), hook the belt (3) over the larger diameter part of the motor pulley (2).
To revert to 33 r.p.m. repeat the proceedings using the smaller step on the pulley.
When the Pro-Ject Speed Box is used speed change between 33 and 45 r.p.m. is electronic. There is
no need to move the belt manually.
For detailed product information please refer to the Pro-Ject web site
www.project-audio.com .