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JVC QL-A220

Quartz-Locked Auto Return Turntable (1983-1985)

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jvc ql-a220 auto return turntable
JVC QL-A220

Description

There are only two major difference between the QL-A220 and the QL-F320: first, the QL-A220 is an auto-return rather than a fully automatic model. And two, the QL-A220 lacks a Repeat function. Therefore, in terms of accurate performance and high-technology engineering, these models are identical.

To monitor platter speed and send correcting signals to the direct drive servo motor hundreds of times a second, a Double Servo Quartz control system is used. In this way, wow and flutter is always kept below 0.025%. Cogging, tiny speed fluctuations that standard direct-drive motors are susceptible to, is totally absent in the QL-A220 thanks to its coreless motor.

There are two reasons why we made the tonearm of the QL-A220 lightweight and straight: one, it improves it's sensitivity, thus it handles record warps easily for clearer low frequency response. And two, it has a resonance frequency that is higher than warp frequencies so resonance cannot cause mistracking and muddy sound.

We've lowered the dynamic fulcrum of the tonearm so that it is level with the record-stylus fulcrum. This reduces angular variations caused by warps, thus reducing effective wow and flutter and improving tracking.

We've used another innovative idea in the QL-A220 to combat acoustic feedback. The tonearm and motor float on an independent sub-assembly within the cabinet: this effectively isolates the most sensitive components from vibrations transmitted by speakers, footsteps, etc. Even physical jarring when operating the control buttons won't budge the tracking stylus.

The simplified controls of the QL-A220, even arm cueing, are up front and can be used with the dust cover closed. For maximum convenience, the tonearm automatically lifts, returns to rest and the power to the motor shuts off at the end of play.

Specifications

Type: semi automatic turntable

Drive method: direct drive

Motor: coreless DC servo motor

Platter: 890g, 300mm die cast aluminium

Wow and flutter: 0.025% wrms

Signal to noise ratio: 78dB

Tonearm: static balance, straight arm

Effective length: 220mm

Overhang: 15mm

Cartridge weight range: 4.5 to 8g

Dimensions: 435 x 105 x 360mm

Weight: 5.2kg

Downloads

220/220B instruction/owners manual  English Deutsch Francais Nederlands Espanol - musicbox4


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JVC Direct Drive Turntables

JVC QL-A220 / QLA220 owners manual, service manuals and schematics are for reference only and the Vinyl Engine bears no responsibility for errors or other inaccuracies. The PDF files are provided under strict licence. Reproduction without prior permission or for financial gain is strictly prohibited. This website is not affiliated with or sponsored by JVC.