Sansui XR-Q7 (1980) - Silent Synchrotor System

 

Brand: Sansui

Model: XR-Q7

Year: 1980

The XR-Q7 from Sansui is a full auto direct-drive turntable with exclusive silent synchrotor system. The Silent Synchrotor System utilize a second rotor, essentially the same design as the drive motor, located directly underneath the drive motor. This second rotor is synchronized with the main drive motor, but rotates back and forth in either direction in response to speed change commands sent by the servo to the drive motor, thereby cancelling any vibration that the torque variations may cause before they can affect the cabinet. The coreless linear-drive motor utilized by Sansui achieve an amazing wow/flutter of 0.009% and a signal-to-noise ratio of 80dB (DIN B). The Quartz-Servo system maintains perfect speeds by controlling the direct drive motor. The XR-Q7 is equipped with Dynaoptimum Balanced Tonearm of a straight design, with an integral headshell fixed to the tonearm tube to minimize mass and improve trackability. All automatic operations of the tonearm are controlled by a completely separate motor and the built-in microcomputer supervises all motor functions.

Technical data:

Type: 2-speed Fully Automatic

Motor: Quartz-Servo Direct-Drive Silent Synchrotor

Platter: 330mm die-cast aluminum alloy

Wow & Flutter: 0.009%

Signal to noise: better than 80dB (DIN-B)

Tonearm lenght: 245mm

Cabinetry: chip board base with anti-howing insulators and hinged dust cover

Cartridge: SV-101

Dimensions: 490x180x430 (WxHxD)

Weight: 11kg

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