Kuzma 4Point 2008-6 - Manual (Page 2)

KUZMA LTD
INSTRUCTION MANUAL FOR 4POINT tonearm
The 4POINT tonearm is a very precisely engineered piece of equipment, however, the construction is
robust and requires minimal maintenance for optimal performance.
Fig.1
CONTENTS: Page
General description 3
Basic Setup 5-6
Setting up the tonearm 6-8
Adjustment of tracking force 9
Adjustment of tangential geometry 9
Adjustment of VTA 9
Adjustment of azimuth 10
Adjustment of bias 10
Damping 10-11
Adjustment of cueing device 12
Maintenance 13
Transport 13
Problems 13
Appendix 1 (tangential geometry) 14-16
Appendix 2 (fine azimuth) 17
Appendix 3 (fine bias) 18
Protractors 19
General description :
This differs from other arms by incorporating several unique features. The zero play bearing is
configured on 4 points. There is very precise VTA adjustment and, despite a longer effective length of
280 mm (11 inches), fits the standard mounting distance of 212mm ( for 9 inches arms).
The heart of the new construction is a unique 4 point bearing. The first set of two points (similar
to a double unipivot bearing) allows vertical movement. The second set of two points allows
horizontal movement. All four points have minimal friction and zero play in all playing directions
headshell lock vertical paddle vert. paddle lock horizontal bearing assembly VTA tower
VTA lock
loop
pin for cable
cable - play position
counterweight tracking force
main counterweights horizontal trough lock trough–horizontal
horizontal paddle
main tube assembly
trough - vertical