Manual de instrucciones de QUAD Classic Series ESL

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ELECTROSTATIC LOUDSPEAKERS
...the closest approach to the original sound

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The Quad ESL A legend in Electrostatic loudspeaker design The Quad ESL is fundamentally different from obvious that large cones and even larger electrostatic conventional loudspeakers and even other electrostatic diaphragms cannot be point sources, so how can they designs. Whilst most conventional speakers use cone be made to behave more like the perfect loudspeaker? type drive units and a coil moving in a magnetic field, Quad solved the problem with an elegant engineering Quad uses the full-ran

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‘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) 3

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‘Quads can deliver a sublime performance. They still take my breath away with their profound revelation’ – Hi-Fi World , Noel Keywood The closest approach... There are few things in life as rewarding as a truly It is often said of ‘box’ or cabinet mounted loudspeakers invigorating live performance from our favourite artist that you can hear more of the box than the driver. This or orchestra. is true, even with high-end ‘box’ loudspeakers. The box Reproducing that experience accurately in the hom

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‘Going back to conventional speakers afterwards merely highlights how great the 989 is’ – Hi-Fi News (July 2000) The closest approach... Ask many of the finest recording professionals in the as an absolute reference? Next time you are visiting a hi- world what their speaker of choice is as the answer is fi show, look for the acoustic engineers - the amplifier surprisingly common. The Quad ESL opens a window designers - even the other loudspeaker designers. More on a recording unlike any other

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‘When I return the 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) 7

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ESL 989 vintage After a number of years producing just 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’ 9

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ESL 988 The ESL-988 replaces the much-loved ESL-63 model. ‘Quad has done it again: the Although of similar size and proportions, the resemblance is only skin deep – for more than 90% of 988s are world class - the single the internal components have been re-designed, upgraded, or modified. Twenty years of materials driver presents a fabulously science have led to improvements in virtually every component and area of construction. together sound that’s tough to The new model has better audio trans

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Specifications Model ESL 988 ESL 989 Maximum Power Output 2N/m2 at 2m on axis 2N/m2 at 2m on axis Sensitivity 1.5u bar per volt referred to 1m (86dB/2.83V RMS) 1.5u bar per volt referred to 1m (86dB/2.83V RMS) Impedance 8 ohm nominal 8 ohm nominal Maximum continuous input voltage 10V 10V Programme peak ( 20 Hz to 20 kHz ) For undistorted output 40V 40V Permitted peak input 55V 55V Directivity index 125Hz . . . . . .5.0dB 125Hz . . . . . .5.0dB 500Hz . . . . . .6.4dB 500Hz . . . . . .6.4dB 1kH

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Quad Electroacoustics Ltd, IAG House, Sovereign Court, Ermine 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 Qu.ESL 25.10.2004 Quad is a member of the International Audio Group