Sony TTS-6000 1977 - 1981 ระบบ Direct Drive Motor ให่ญทำงานนิ่งเงียบขึ้นรอบไวหยุดไว ระบบ Start Stop Touch Screen

Review From Audio Database
It uses a brush and slotless (BSL) motor with a simple structure without slots in principle. Since this motor has no slots that cause cogging, torque unevenness is small, and quiet and smooth rotation is realized.
In addition, a load characteristic of 0% rotational fluctuation is achieved even when tracing the outermost circumference of a phonograph record with a needle pressure of 60g per arm using three arms.
A crystal lock magnesium disk servo is used for the servo circuit that affects the rotational accuracy and stability of the turntable.
In this method, the rotational speed is detected by means of a multi-gap head (MGH) based on the speed detection signal recorded at high density on the periphery of the turntable. In addition, in order to prevent the influence of the temperature characteristics of the devices used, a crystal lock circuit is introduced to phase-lock the detected signal so that the rotational performance is limited to the measurement detection limit.
It employs an electronic brake and uses a dedicated multi-gap head for purely electronic braking.
In this operation, the brake is applied not only at the stop operation but also at the switching from 45 rpm to 33 1/3rpm. It quickly enters the stop and steady rotation with about 1 second at the stop and about 0.5 second at 45 rpm to 33 1/3rpm.
The turntable uses a precision processed 32 cm aluminum die-cast with deadning.
SBMC is used for the frame.
Uses a crystal strobe with crystal division.
The neon tube emits 120 independently produced pulses from a crystal oscillator, so the flash pattern is sharp enough to appear stationary.

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