JVC QL-F4 turntable

Quartz Fully Automatic turntable

JVC's Core-Less Direct-Drive Motor

JVC Super Servo Frequency Generator

 

The best of both turntable worlds - platter rotational accuracy and full automatic operational ease - are included in the QL-F4. the combined use of our coreless motor plus the direct-drive mechanism and our renowned JVC Quartz technology is the secret behind the performance of the QL-F4 and its low wow and flutter of 0,025% (WRMS). We believe in this price range on the market that offers so much full automatic convenience as does the QL-F4

 

JVC Quartz for Accuracy

The QL-F4 featured the JVC Quartz servosystem which incorporates a precision Quartz oscillator JVC Super Servo Frequency Generator and responsive servo circuit, its major highlight is the JVC core-less direct0drive motor, this doesn't "cog" and thus assures absolutely smooth and accurate revolution, and leads to low wow/flutter of 0,025% (WRMS). This plus the use of simplified circuits for greater dependability, works together to give you JVC's Musical Truth.

 

Fully Automatic Mechanism

The Ql-F4 offers the convenience of fully automatic operation. Among its unusually versatile functions are;

Auto Repeat offering from 1 to 6 plays at the twist of a rotary control, with the "R" setting offering infinite replays.

Auto Lead-in, which raises the tonearm, moves it over the edge of the record, and gently lowers it to the lead-in-groove to start playing

Auto-Return which sets the tonearm automatically to its rest when a play is completed then shuts the power off. As a bonus the moment you move the tonearm manually, the QL-F4 can be operated as if originally designed for manual operation.

 

New Gimbal Support and More

Included in the Ql-F4 are, New Gimbal Support, One-Row Strobe, Oil-Damped Cueing, the knob-type Anti-Skate control,  low-resonance cabinet, etc.

Specifications

Drive System:  Direct drive

Motor:  Coreless DC type, Quartz Locked FG servomotor

Speeds:  33-⅓ and 45 rpm

Wow and Flutter:  less than 0,025% (WRMS)

Signal-to-Noise Ratio :  more than 62 dB (IEC-B);  72 dB (DIN-B)

Speed Detections:  Integrated frequency generator

Starting Torque:  more than 650 g-cm

Speed Deviation:  within 0,004%

Load Characteristics:  0% (with 100 g total tracking force)

Drift per Hour:  0,0001% /h

Power Characteristics:  0% (±10  V)

Temperature Characteristics:  0,00005% /°C

Platter:  312 mm diameter

Tonearm Type:  Tracking-Hold system, S-shaped tubular arm

Effective Length:  220 mm

Tracking Error:  +3°35' - 0°43'

Overhang:  15 mm

Tracking Force Range:  0 - 3g (0,25 g division, direct reading)

Weight Range (incl. Headshell):  14,5 - 22 g (10 g headshell)

Cartridge Type:  Moving magnet (cartridge body MD-1025)

Stylus:  0,5 mil. Diamond (DT-Z1S)

Optimum Tracking Force:  2 gramm

Output:  3 mV (1 kHz)

Frequency Response:  10 - 25,000 Hz

Separation:  more than 25 dB (1 kHz) with test record TRS-1

Load Resistance:  47 k Ω  - 100 k Ω

Compliance

Dynamic :  10 x 10¯⁶ cm/dyne

Static :  30 x 10¯⁶ cm/dyne

General Specifications

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

Power Consumption:  9 watts

Dimensions (W x H x D):  460 x 147 x 365 mm (with cover closed)

Weight:  6,5 kg (14,3 lbs)