9
Counterweight configuration:
Cartridge weight: counterweights configuration (gr)
0-4 g +20 (3.5 mm)
6g +30 (5 mm)
8g +40 (7 mm)
10g +50 (8.5 mm)
12g +40+20
14g +40+30
16g +50+30
18g +50+40
20g +50+30+20
22g +50+40+20
24g +50+40+30
26g +50+40+20+20
28g +50+40+30+20
30-32g +50+40+30+20+20
Move the small upper counterweight for more precise balance, by rotating. The tonearm's
centre of gravity is chosen to be around the height of vertical rotation. Therefore balancing
the tonearm to zero is very difficult. Adjust it to be roughly balanced and increase tracking
force with smaller counterweight.
If this is too loose, hold the front part of the counterweight and rotate the rear part until there
is a tighter fit, or lock it into position on the threaded carrier. Opposite rotation will make the
smaller counterweight looser. (Fig. 2)
4. Adjustment of tracking force
Balance the tonearm with the tracking scale, which must be at record height. Rotate the
smaller counterweight towards the tube. Rotation for one turn (observe red dots) will change
tracking force for approximately 0.1g. If you are unable to obtain the correct tracking force,
add or remove main counterweights. By rotating two counterweights along the thread you
can obtain the desired balance. Then simply rotate them one against other and this will fix
them. (Fig.1)
Check that the cueing device is at the correct height (see paragraph 10).
5. Adjustment of tangential geometry
Put a record on the platter and adjust VTA in such a way, that the central axis of the tube will
be parallel to the record. This is only a starting point for VTA.
Using the protractor, adjust geometry at two null points. Rough guidance is by the edges of
the cartridge body, but accurate adjustment is by observing whether the cantilever and lines
are parallel at the two null (zero) points.
See appendix 1.