JVC QL-F6

Fully-Automatic Quartz Turntable

Features

Coreless DC Motor with Quartz Servosystem

JVC Super Servo Frequency Generator

Variable "Q" Oil-Damped Tonearm

Fully-Automatic Arm Operation with Memory Repeat

Front Operation Convenience

The JVC QL-F6 is full of new and useful features. Namely, for higher speed accuracy, we've added another speed-correction system to the renowed JVC Quartz servosystem. For higher tracking accuracy, we've added a new oil damping system to our New Gimbal Support. And for low acoustic feedback, we've used a bottom board made of newly-developed H.D.P. compoud - heavier and more solid than conventional plastics - in combination with a solid aluminum die-cast cabinet. Further improvements are made even in the smallest of parts. What improvements do they offer your ears? Here the QL-F6 at your nearest dealer - your ears will know the answers.

Variable "Q" Oil-Damped Tonearm.

The tonearm of the QL-F6 is on JVC's New Gimbal type support, known for low friction and high sensitivity. But JVC has made its performance even better by adding to it our new variable "Q" oil damping system. Advantages are:

1) Damped "Q" (low-frequency resonance) results in better tracking

2) Sensitivity is high, with the support critically controlled

3) The user never needs to replace or replenish oil

4) Resistance to acoustic feedback is higher

5) The "Q" can be adjusted by a pair of controls - one for horizontal and one for vertical - to match the cartridge's compliance.

JVC'scomputer-asisted "K&K Method" was the creative force behind this innovative development.

JVC's New Double-Quartz Servosystem

In addition to the conventional JVC Quartz servo- the one that incorporates a phase comparator - there's another Quartz servosystem inside the QL-F6; the F-V converter makes the use of reference Quartz crystal rather than a more conventional reference voltage generator. Thus the rock-steady platter speed is made still more accurate. You cannot find another turntable offering steadier and more reliable speed control.

JVC's coreless motor is accurately controlled by these two dependable servos to rotate the platter with unimpeachable constancy. Besides, it vibrates very little and generates high torque (1,2 kg/cm) for a coreless motor, thanks to the newly-developed push-pull drive circuit. Finally, the JVC Super Servo FG (Frequency Generator) is built inside the motor to detect any speed error and help keep the platter spinnung accurate, always.

Specifications

Motor Section

Motor:  Coreless, DC type, FG servomotor

Servo System:  Phase-locking to the quartz oscillator

Drive System:  Direct drive

Speeds:  33-⅓ and 45 rpm

Fine Pitch Adjustable Range:  +_6%

Wow and Flutter:  0,025% (WRMS)

Signal-to-Noise Ratio:  more than 78 dB (DIN-B)

Speed Detection:  Frequency generator

Starting Torque:  more than 1,2 kg-cm

Speed Deviation:  within 0,002%

Load Characteristic:  0% (with 170g total tracking force)

Drift:  0,0001 %/H

Power Characteristics:  0% (±10 V)

Temperature Characteristics:  0,00005 %/C

Platter:  32,7 cm

Tonearm Section

Type:  Statically-balanced oil-damped tonearm

Effective Arm Length:  233 mm

Overhang:  15 mm

Weight Range Including Headshell:  13 - 20 g

Cartridge Section

Type:  Moving magnet (MD-1025EB)

Frequency Response:  10 Hz - 25,000 Hz

Output 3 mV (1 kHz)

Channel Separation:  25 dB (1 kHz) load Resistance:  47 - 100 k Ω

Compliance:

Dynamic :  10 x 10¯⁶ cm/dyne

Static :  30 x 10¯⁶ cm/dyne

Stylus:  Dt-ZIEB, 0,3 x 0,7 mil (diamond, elliptical)

Optimum Tracking Force:  1,75 g ±0,25 g

General

Power

Supply :  AC 110/ 120/ 220/ 240 V, 50/60 Hz

Consumption :  15 watts

Dimensions (W x H x D):  456 x 142 x 400 mm

Weight:  11 kg

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