Kuzma STOGI REF 313 110513 - Manual (Page 10)

If the tonearm is too high the sound tends to be too bright, ie. too aggressive,
especially on acoustic strings.
Try moving the tonearm up and down in 2mm steps to judge where the arm
sounds most balanced with a more precise stereo picture.
Fine adjustments can be made in the range of 0.5mm.
Now fix height firmly.
4.4. Adjustment of azimuth:
Azimuth describes the angle between the record surface and the stylus, viewed from the front of
the cartridge. This should be 90° and can be checked by observing if the cartridge body is
square with its mirror image on the blank part of a record or by putting a mirror under the stylus
(taking care that the stylus does not slide). If using a mirror ensure that it is absolutely flat.
4.4.1. Rough Azimuth adjustment:
If the cartridge is not square, the tube can be rotated slightly to obtain the correct azimuth.
Firstly the tube should be released by loosening the two screws on the top of the arm. Use Allen
key 2mm and turn screw for only 90°. Then (being careful not to push the tube off the armrest)
insert the Allen key into the screw on the right side of the arm (this screw is above the cueing
device). Observing the position of the marks on the tonearm and the cartridge body, this screw
should be turned for approximately 45° to alter the azimuth. A clockwise turn of the screw
causes a clockwise rotation of the arm and vice-versa. When the cartridge body is square fixed
the top two screws firmly but do not over tighten as the locking mechanism holds very quickly.
4.4.2. Fine Azimuth adjustment:
Note: See appendix 2 on our web site.
The easiest way is to use an appropriate program with a test record and PC.
It can also be done using an oscilloscope with a test record or by using good records in a good
system and listening to the sound. Cartridges with fine profiles (VDH, Microline etc.) are more
sensitive to this adjustment. On the other hand cheaper cartridges are not made so well, so
making fine adjustment is also useful.
Start listening with the tube in zero position, ie. with the marking lines aligned. Listen to the
sound-stage, the focus and the stability of the instruments. Release the two locking screws and
rotate the Allen key so that tube rotates for approximately the width of the mark. Listen and
then rotate tube for a similar amount in the opposite direction and again listen. Adjust the arm
to the position in which the best sound was obtained. In this position make further adjustments
by turning the Allen key for a quarter turn in one direction, listening and then turning a quarter
turn in the other direction and listening.
Continue this process making ever decreasing adjustments, 1/8 of a turn, then 1/16 and so on.
When optimum results are obtained fix the locking screws.
Note: During fine adjustment only gently fix locking screws during listening.
The adjustment screw is highly sensitive and the smallest pressure on the Allen key will alter
the azimuth and sound.
Do not attempt any adjustment when the locking mechanism is locked. Although no damage can
be done.
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