VICTOR/JVC TT-71
¥ 42,800 (around 1981)
Commentary
Quartz lock servo DD turntable with advanced machine technology.
The drive motor uses the same DC brushless motor as the TT-81 type. Smooth and accurate rotation is achieved by the combination of a strong torque of 1kg-cm or more and a high-precision all-round integral detection FG servo system.
The phase comparator circuit uses a sample-and-hold type circuit with good response to improve the accuracy of the speed control signal.
350kg-cm in order to deal with short period rotation unevenness and instantaneous load fluctuation which cannot be covered by quartz lock.2Heavy duty turntable with inertial mass is adopted.
A touch sensor system is used for speed switching and stop.
Equipped with an electromagnetic quick brake mechanism.
Model Rating
| Type | Turntable |
| Drive system | FG Detection Quartz Lock / DC Servo / Direct Drive |
| Wow flutter | 0.025%(WRMS) 0.013% (Rotating Part) |
| Signal-to-noise ratio | 73dB(DIN-B) |
| Start-up characteristic | 1.4 sec. or Less (1/2 Rotation, 33 1/3rpm) |
| Quick stop characteristic | Within 1.6 sec. (at 33 1/3rpm) |
| Overshoot | 2.5% or less |
| Load characteristic | 0% (Needle Pressure 120g) |
| Drift | 0.0001%/h 0.00003% / ° C |
| Rotational speed deviation | 0.002% or less |
| Mounting Hole Dimensions | 281 mm diameter round |
| External dimensions | Width 350x Height 120x Depth 350 mm |
| Weight | 6.2kg |