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There are few things in life as rewarding as a truly

invigorating live performance from our favourite artist

or orchestra.

Reproducing that experience accurately in the home

requires loudspeakers that go beyond the conventional. 

To really understand the ESL, a listener needs to be

familiar with the nature of a live performance. Whilst the

performance may be impressive and communicate all

kinds of emotions, it is never artificial. It sounds real

and natural.

At Quad, we  believe this is the job of a loudspeaker.

To present the music in the raw, natural form -

nothing added, nothing taken away. In this respect,

the ESL is an acquired taste. It displays none of the

over-empasized bass boom or mid-range projection

that plagues moving-coil, box-bound speakers - so in

comparison, the ESL can seem rather meek and polite.

The characteristics, however, that can make these box

speakers so impressive, are also those that cause

fatigue and wear down the listener. Spend some time

with the ESL and you too will begin to realise that it’s

not always the one that shouts the loudest that gets

heard.

It is often said of ‘box’ or cabinet mounted loudspeakers

that you can hear more of the box than the driver. This

is true, even with high-end ‘box’ loudspeakers. The box

- no matter how inert - will always colour the sound.

Electrostatic loudspeakers are therefore in a league of

their own in terms of ‘transparency’.

But to get really close to the original sound, a standard

planar electrostatic speaker, needs more. At a live

performance, each sound comes from an identifiable

position on the stage. To reproduce this three-

dimensional sound ‘image’ accurately, we need to

produce an interference pattern upon the listener of

waves propagated from a pair of true point sources - in

much the same way as a laser produces a hologram.

The Quad ESL 988 and 989 speakers are the only

electrostatic speakers in the world to effectively mimic a

point-source. 

Five minutes spent listening to a well set-up pair of

Quad ESLs will confirm their ability to project the

positions of each and every vocalist in a choir, and

instrument in an orchestra - with a naturalness and level

of detail that makes the Quad ESL totally unique in

every respect.

‘Quads can deliver a sublime
performance. They still take my breath
away with their profound revelation’

– Hi-Fi World , Noel Keywood

The closest approach...

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Summary of Contents for Classic Series ESL

Page 1: ... the closest approach to the original sound E L E C T R O S T A T I C L O U D S P E A K E R S ...

Page 2: ... in a fashion rather like the ripples resulting from a pebble dropped into a lake It is obvious that large cones and even larger electrostatic diaphragms cannot be point sources so how can they be made to behave more like the perfect loudspeaker Quad solved the problem with an elegant engineering solution that was subsequently awarded a patent Instead of a large single electrode Quad designed a nu...

Page 3: ...3 Even if price weren t an issue I d be hard pushed to find speakers that better the 988s combination of talents I can t recommend them too highly Gramophone March 2001 ...

Page 4: ...4 ...

Page 5: ...ts heard It is often said of box or cabinet mounted loudspeakers that you can hear more of the box than the driver This is true even with high end box loudspeakers The box no matter how inert will always colour the sound Electrostatic loudspeakers are therefore in a league of their own in terms of transparency But to get really close to the original sound a standard planar electrostatic speaker ne...

Page 6: ...ers what do they regard as an absolute reference Next time you are visiting a hi fi show look for the acoustic engineers the amplifier designers even the other loudspeaker designers More likely than not they will have a pair of ESLs hidden away in a corner Lastly consider the magazine reviewers the so called critics with golden ears who listen daily to a multitude of loudspeakers assessing how the...

Page 7: ...988s it will be in a package much too small for the speakers but just large enough to carry a check for their remittance The Absolute Sound July 2001 The Best Late Night Speakers in The World ever Hi Fi World December 2000 ...

Page 8: ...8 ...

Page 9: ...st a single colour version of the ESL 988 and ESL 989speakers we decided to offer our customers a couple of new alternatives Picture here is the vintage finish with wooden top and base caps and an classical style cloth sock ESL 989 vintage ...

Page 10: ...t also contribute to an enhanced performance in the mid band which was already widely regarded as the cleanest in the world Although referred to as bass panels the additional electrostatic panels are in fact full range as are all the panels but the increase in surface area allows a greater volume of air to be moved leading to an improvement in the lower frequencies This particular development had ...

Page 11: ... that for many the ESL needs to vanish into it s surroundings visually as well as audibly whether these surroundings be a stately home or docklands apartment The original black on black finish is now complemented with the Vintage and the Nouveau finishes Sonically these are identical to the standard model but aesthetically they offer more variety The Vintage models include a wooden base plate as w...

Page 12: ...ne Business Park Huntingdon PE29 6XU Tel 0845 4580011 Fax 01480 431767 www quad hifi co uk The information in this brochure is subject to change without notice All rights reserved 2004 Quad Quad is a member of the International Audio Group Qu ESL 25 10 2004 ...

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