SOLD - FOR SALE: Victor (JVC) TT-71
Item #649348544Info: Victor (JVC) TT-71
||Cash, Paypal, Interac/EMT
||5.00 (kg) Calculate Shipping
||35.56cm x 35.56cm x 20.32cm
||10 - Mint (?)
Apr 16, 17 3:51pm (PST)
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DD JVC/Victor turntable motor in mint condition.
Fully functional .
Commentary from http://audio-heritage.jp/VICTOR/etc/tt-71.html;
Quartz lock servo DD turntable introducing advanced machine technology.
As the driving motor, DC brushless motor common to TT - 81 type is adopted. Combined with a strong torque of 1 kg - cm or more and a high precision full circumference integral detection FG servo system, smooth and accurate rotation is realized.
In addition, a circuit with good responsiveness called sample-and-hold type is adopted as a phase comparison circuit, and the accuracy of the speed control signal is raised.
Weight class turntable with inertial mass of 350 kg - cm 2 is adopted to cope with short cycle rotation unevenness and momentary load variation which can not be covered with quartz lock.
Touch sensor system is adopted for speed switching and stop.
The electromagnetic type quick brake mechanism is carried.
Rating of model;
Drive system FG detection Quartz lock · DC servo · direct drive
Wow flutter 0.025% (WRMS)
0.013% (rotating part)
S / N ratio 73 dB (DIN-B)
Starting characteristic Within 1.4 sec. (1/2 turn, 33 1/3 rpm hour)
Quick stop characteristics Within 1.6 sec (within 33 1/3 rpm)
Overshoot Within 2.5%
Load characteristic 0% (stylus pressure 120 g)
Drift 0.0001% / h
0.00003% / ° C
Rotational speed deviation Within 0.002%
Mounting hole size Diameter 281 mm regular circle
External dimensions Width 350 × height 120 × depth 350 mm
weight 6.2 kg
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