7
Place the arm back in its rest.
Without letting the cartridge move, tighten the screws holding the cartridge to
the arm head. Make it tight, but don't over do it and strip the threads or distort
the cartridge body.
D. TRACKING FORCE:
Tracking force is adjusted by moving the counterweight forward and back a bit
at a time. At least initially, you will
be setting the tracking force twice. The
first time will be before the cartridge's overhang is set. After this is done, you
will need to double check the tracking force and adjust it as needed.
The JMW 12.6 does not have a built-in tracking force gauge, but a Shure Stylus
Force Gauge is supplied with your unit. 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 make a light tracking cartridge
to cause more damage to the grooves than running a cartridge at a heavy
setting.
E. AZIMUTH
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.
By rotating the counterweight you can tip the arm in either direction. Set the
counterweight so the cartridge sits as shown below.
