What is stereo?




There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.




H.H. Scott '59





JVC QL-5 turntable

JVC Quartz technology

JVC Super Servo Frequency Generator

Highly Sensitive New Gimbal Support

Quick Start and Quick Stop

 

The QL-5 has all that's needed for your musical enjoyment including, of course JVC Quartz servo. It's the "no-frills" model in our lineup of Quartz Turntables, and its balanced electrical and mechanical construction makes it a particularly good buy.

 


JVC Technical Knowhow

To produce expensive state-of-the-art. Equipment is not our only virtue, our knowhow accumulated during a half century of work, permits us to use the best of electronics and machining technique to offer reasonably priced equipment for serious audiophiles JVC Quartz Turntable are no exception. In the medium-priced QL-5 for instance we;ve designed a special C-MOS IC which incorporates all necessary circuits for the servo system. This configuration not only simplifies the circuit-board layout but improves overall dependability.

 

jVC Quartz and Super Servo FG

With its simplified circuitry and mechanisms, none of the JVC Quartz Technology has been omitted from the QL-5. the precision Quartz oscillator, responsive servo system, JVC Super Servo Frequency Generator, accurate direct drive DC servo motor, etc., are all part of this attractive and supremely reliable turntable package. All superb basic parameters are all included.

 

Heavyweight Platter

To absorb all miniscule vibrations, the platter must be heavy and accurately concentric. The dynamically balanced one used on the QL-5 is heavy weighing 2 kg (4,4 lbs) rubber mat included. Wow and flutter is thus virtually eliminated, while speed accuracy is maintained against suddenly increased loads. Among other QL-5 features are the Quick Stop, New Gimbal Support, newly designed One-Row Strobe, Oil-Damped Cueing, solid cabinet, and JVC height-adjustable, Dome isolating Suspension.

 


Specifications

Motor:  12-pole, 24-slot, DC type FG servomotor

Drive System:  Direct-drive

Speeds:  33-⅓ and 45 rpm

Wow and Flutter:  less than 0,025% WRMS

Rumble:  better than73 dB DIN-B (63 dB IEC-B)

Speed Detection:  Integrated FG

Starting Torque:  better than 0,8 kg-cm

Speed Deviation:  within 0,004%

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

Drift per Hour:  0,0001%/H

Power Characteristics:  0% (±10%)

Temperature Characteristics:  0,00005%/°

Platter:  312 mm diameter

Quick Stop Time:  within 1,6 sec.

Tonearm

Type:  Tracking-Hold system, static balanced, New Gimbal support

Effective Length:  245 mm

Tracking Error:  +1°48'  -1°31'

Overhang:  15 mm

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

Weight Range (including headshell):  14,5 - 22 g (headshell 10 g)

Height Range:  39 - 51 mm (present to 43 mm)

Mechanisms Equipped:  Oil-damped arm elevator, Anti-skating system, headshell mountingangle fine adjustment possible

Cartridge

Type:  Moving Magnet (Cartridge body MD-1025)

Stylus:  0,3 x 0,7 mil. Diamond (DT-Z1TE)

Optimum Tracking Force:  2 grams

Output:  3 mV (1 kHz)

Frequency Response: 10 to 25,000 Hz

Separation:  better than 25 dB (1 kHz)

Load Resistance:  47 k

Compliance: 

Dynamic ;  10 x 10¯⁶ cm/dyne

Static :  30 x 10¯⁶ cm/dyne

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

Power Consumption:12 watts

Dimensions (W x H x D) :  481 x 165 x 403 mm (18-15/16" x 6-1/2" x 15-7/8") with cover closed

Weight:  10,5 kg (23,1 lbs)

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