audible science
audible science
page 36
INSTALLATION & SETUP
CONT.
VTA & SRA SETUP
HOW TO ADJUST VTA AND SRA
At the rear of the main arm mount there are two
thumb screws. These need to be loosened in order for
the crossarm to be raised or lowered using the VTA
adjustment knob at the top of the main arm mount.
There is a broad scale vernier on the rear of the main
arm mount. This is complemented by a dial scale at the
top of the VTA adjustment knob.
Once you have set the main arm pivot at the same level
as the platter you can mark the position on both the rear
vernier and dial scale on the adjustment knob using a
marker pen or coloured nail varnish. Experienced Cobra
users often use different coloured marks to identify
preferred settings for varying thickness LP’s.
Use a ruler edge to sit on the platter and let it protrude
over the edge to line up over the arm pivot (remove the
wand to do this).
INSTALLING
& TUNING
YOUR COBRA
Cobra central arm
bearing cup
Cobraʼs “heart-shaped”
counterweight with
removeable weights
Cross arm pivot
