The Bridge cover of SA-CD drive mechanism is bigger
and longer than the former model. Outer rotor brushless
DC motor is installed at the spindle to drive the discs.
This is very effective for reducing the motion noise from
motor drive and air flow by disc rotation. Furthermore,
laser pick-up module is mounted with vibration absorbers.
They are made of the special silicon which is carefully
selected for this mechanism. It prevents the vibration to
the outside 4dB lower at the resonance peak.
These materials are mounted directly on the aluminum
base plate, and it contributes to reduce the motion noise
by half of DP-720.
4
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