DESCRIPTION

The DP-500M uses a quartz lock servo that controls platter rotation via intervals of optical pulses passing through a slit. This control system ensures accurate rotation with no deviation from the center. The development of a high-torque motor (4.5 kg•cm) has boosted start-up speed to 0.3 second, providing quick operation and stable rotation. Silicon rubber, a deadening material, has been applied over the entire reverse side of the large diecast aluminum platter to minimize howling. Hologram vibration analysis was used to improve the ability of the supplied platter sheet to hold the record. A slight cone-shaped taper has even been applied to the sheet.