Techinics SL-1800 MK1 _Table tournante à entraînement direct

(TT10xx)

Made in Japan.

Direct drive. Manuelle.

Modèle de Table tournante très populaire dès les années 70-80 par les DJ pour sa fiabilité simplicité (au même titre que les SL-1200). Donc un modèle  super solide avec une grande précision de lecture.

Technics SL-1800

Direct-Drive Turntable (1977-1981)

mkI Servo control, mkII Quartz locked

Description

The SL-1800 features full Technics uncompromising direct drive performance in a simple, straightforward package.

The centre of this sleek, attractive unit is its highly accurate One Chip IC controlled servo drive motor.

This direct drive motor, which incorporates all of the design features of all Technics fine DD motors, is controlled by the unique BFG system which utilises the back electromotive force induced by the rotor in the stator field coils to monitor the platter speed.

The frequency generator in the SL-1800 uses the waveform obtained as its reference and it is compared with the standard calibration frequency from the reference oscillator.

In this way, a signal to correct the speed can be sent instantly whenever needed to change the motor drive current in order to maintain precise platter speed.

Specifications

Type: manual turntable

Drive method: direct drive

Control method: servo control (mk1), quartz synthesizer (mk2)

Motor: DC motor

Platter: 330mm (mk1), 332mm 2kg (mk2) aluminium alloy die-cast

Speeds: 33 and 45rpm

Pitch control: 10% (mk1), 12% (mk2)

Wow and flutter: 0.025% WRMS

Rumble: -73dB (mk1), -78dB (mk2)

Tonearm: universal static balance type

Effective length: 230mm

Overhang: 15mm