14. Now carefully lower the platter over the threaded record spindle and secure it in place with the knurled platter nut,
insuring that the nut's recessed side is facing downward. Connect the power supply lead to the motor lead.
15. Fit the drive belt around the smaller 33 RPM groove in the motor pulley and in the lowest groove in the platter. (The lower
pulley groove is for 45 RPM). Note: A 78 RPM-only pulley is available for listening to 78 RPM LP’s.
16. Using a precision miniature bubble level on top of the armboard or platter, adjust the knurled suspension towers for
perfect level, making sure the chassis is freely suspended with approximately 3 mm (1/8”) clearance between the underside
of the metal chassis and the tops of each of the felt buffer pads on the spider.
17. Although not absolutely necessary, you may wish to fine tune the suspension for perfect piston-like bounce. Since each
spring is slightly eccentric, rotating one or more will affect the bounce. Only rotate springs anti-clockwise while holding the
metal knurled tops to prevent dislodging the spring’s base or making a level change. Due to manufacturing tolerances,
springs do not have identical properties so swapping location of the springs may also improve the bounce. Perfect setup has
been achieved when a light push on the turntable's spindle results in a free and even vertical bounce for a number of cycles.
Adjusting tension on the tonearm cable will also affect the bounce.
18. Install the three spring covers making sure they seat fully on the chassis.
19. Make final adjustments to the arm and cartridge as per the manufacturer’s instructions. Plug the power supply into the
AC mains and enjoy!
© Copyright 2009 Artech Electronics Ltd. 1-800-631-6448
