Kuzma AIR LINE 2007-6 - Manual (Page 12)

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The tone arm is correctly levelled when:
Above the outer grooves whole assembly should move slowly away from the record.
Above the middle of the grooves should stay more or less stable or have very small
drift.
Above the inner grooves the whole assembly should move slowly towards the record
centre.
If the tone arm is stable at the outer groove and moves towards the centre at the middle
and at the inner grooves, then tone arm should be levelled in such way, that the whole
assembly will slide down towards outer perimeter of the LP.
If it is stable at inner groove and move slowly outwards at the middle and also at the
outer perimeter of LP runs outwards (away from LP centre) then the air bearing should
be levelled so that the whole assembly will drift towards the LP centre.
6.
Adjustment of VTA
Note: Do not operate theVTA knob while the lever is in the lock position!
VTA is adjusted by rotating the knob on the top of the base. Rotation in the direction
of the arrow (+), means that the tonearm will be raised at the support. A rough scale
can be seen on the front of the main base. This is on a scale of 10mm. In the middle of
the scale is a stronger line indicating the zero starting point. The space between each
line represents 1mm difference. Full rotation of the knob is 8 markings, representing
0.1mm between two lines.
To make VTA adjustment easier, you can rotate the ring while holding the main knob
to adjust the zero starting point on the knob. This knob can rotate a little even when
the lever is in the lock position (the lever locks the support mechanism and not the
knob itself). The lever, gently pushed in to the lock position, gives rigidity to the VTA
system due to its special construction. Fine adjustments of only a few 0.1 mm will
make a big difference in sound on the same LP. Bear in mind that the tonearm cables
need at least 40 hours of 'burning in' for optimal performance.
7.
Adjustment of Azimuth
To make azimuth adjustments, release the two screws locking the mechanism at the
centre top of the tube, with Allen key 2mm. The small tube with hexagonal screw on
the left side, is for fine rotation of the tube. To change azimuth, insert Allen key 2mm
and finely rotate it. The Allen key might feel loose in the screw but when you rotate
it, by small increments, it will change the azimuth. Returning it back will bring
azimuth to its previous position. Changes can be seen by misalignment of the white
lines on the top of the centre of the tube. Even 15 degrees rotation of the Allen key
will make a significant difference.