Kuzma STOGI 90923 - Manual (Page 11)

11
4.5. Bias adjustment:
Note: see Appendix 3.
The bias should be adjusted according to the tracking force. Using Allen key 1.5mm,
until the position of the weight is equivalent to your chosen tracking force. Lock
screw when in position.
Fig. 6 Bias adjustment
For maximum trackability, it is advisable to set the bias by use of an appropriate test
record, ie. those with tracking bands. Please do not use test records with blank space
where the tip of the needle sits on the surface rather than in the groove.
Set bias and tracking force as previously described and listen to mistracking on highly
modulated tracking bands. On higher modulated bands mistracking can be heard as
impure tones and there will be more overtones. (See instructions on test record)
If mistracking is apparent, increase or decrease bias until minimum mistracking is
found. If mistracking is heard on the right channel only then the bias is too low, if on
both channels the bias is too high or the trackability limit of the cartridge has been
reached.
Finally further decrease mistracking by increasing tracking force to the maximum
recommended for the cartridge.
Again try to optimize bias.
4.6. Cueing device adjustment:
Should you find that in the ‘up’ position the cartridge is too high or too low above the
record then the cueing device can be raised or lowered. This can be done simply by
using Allen key 1.5mm:
Insert key into screw on side of arm rest.
Release screw, raise or lower device and retighten.
Rotation of cueing device can affect the drift of cartridge while traveling vertically
down.
X P
mm gr
0
1.00
3 1.25
8 1.50
13 1.75
18 2.00
bias lock
X