7
Following the gauge instructions set the tracking force to the cartridge
manufacturer recommendation plus 1/10 of a gram more. We always
recommend going to the high side when it comes to tracking force. High
frequency vibrations can cause a light-tracking cartridge to cause more
damage to the grooves than running a cartridge at a heavy setting.
VERY IMPORTANT: MAKE SURE THE HEADHSELL IS PARALLEL TO THE
PLATTER WHEN SETTING THE TRACKING FORCE. IF IT IS NOT THE END
RESULT WILL BE HIGHER OR LOWER VTF THAN YOU WANTED.
E- AZIMUTH ADJUSTMENT
Next, the lateral balance or azimuth must be set. Because the phono
cartridge is offset, there is an unbalancing force that tilts the arm to one
side. For the cartridge to properly track the record groove, the stylus
must be ninety degrees to the record surface. Move the counterweight so
a slight tracking force is applied and the stylus just sits on the record
surface.
Rotate the counterweight as needed to bring the arm into correct lateral
balance to set azimuth. When the azimuth has been set, you can lightly
tighten the setscrew located on the top of the counterweight. Lay the
long thin rod supplied behind the cartridge mounting screws into the V
groove and use it as a guide for setting azimuth.
Long thin rod
90 degrees
Unlike other unipivot arms, the JMW-3D lateral balance weight does not
hang off to the side of the arm. Instead, its position around the bottom
of the upper bearing housing places the weight below the pivot point.
This increases mass below the pivot and increases arm stability.