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ESL 2805 & ESL 2905
the closest approach to the original sound.
Reference
series
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The Quad ESL Contemporary Electrostatic Loudspeaker Design The new ESL-2805 and ESL-2905 electrostatic loudspeaker; together Electrostatics are Quad’s latest reference with the imaging and soundstaging loudspeakers and like their predecessors only possible from a theoretically ideal should be regarded amongst the finest point source; and the coherence and loudspeakers in the world today. In continuity of a single drive unit. areas such as transparency, and lack of colouration, they are with
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Simplicity of use and elegance of Quad products stand alone in the hi-fi design are purely consequential to world - renowned for their longevity; the application of sensible engineering quality of build; and consistently high principles. standard of performance. Our award- winning service department regularly We have never sought to design maintains products over 50 years in statement pieces or style icons, yet age. Products which still bring their almost every Quad product has owner
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The case for a closer approach... The moving-coil conundrum A moving-coil speaker consists of a Because large speaker drive-units wire coil suspended inside a magnet. cannot reproduce high frequencies When an audio signal passes through well, and small ones cannot reproduce the coil a varying magnetic field is set low frequencies at all, practical hi-fi up which interacts with the magnet and loudspeakers use two or more drive- causes the coil to move back and forth. units connected v
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The Electrostatic alternative Although deeply flawed, their cost and volts is connected to the membrane convenience advantages are such that the which at rest is suspended at an equal overwhelming majority of loudspeakers distance between the two plates. When in today’s marketplace are moving-coil, an audio signal (also stepped up to and at Quad we manufacture some of a few thousand volts by a matching the finest examples of this genre. But, transformer) is applied to the metal as a counse
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"I know of no other speaker I'd rather own, regardless of price. I think it's the finest hi-fi purchase you could ever make in terms of performance and value-yes, it's that good. Speaker of the year? Nah. Speaker of the centuries. This one and the last.’' – Stereophile , Sam Tellig
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The electrostatic principle 1. 1. A perfect point source produces a Naturally produced sound emanates spherical wave pattern. from a point. Virtually no loudspeaker comes close to achieving this – but the 2. The air particle movement at a plane Quad approach comes closest of all. some distance from the source. The ESL is dipolar, producing front An identical movement in the ESL and rear radiation. It has no box so 3. membrane produces and identical there is no colouration. Using large
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Construction process of an ESL 2905
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The ESL for home theatre Whilst for most ESL customers the For home cinema use, the ESL is quite important factor is performance with remarkable. Although there is no two-channel stereo sources, be those dedicated centre channel to match analogue or digital, for a growing the new ESLs, most Home Cinema number of customers 'home cinema' or amplifiers feature a 'phantom' centre even multi-channel music is now also channel mode. becoming an important consideration. Such is the a
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"By the highest standards, the 2905s get everything right to a degree that had me shaking my head in awe. This is easily one of the most revealing and accurate loudspeakers I have ever heard." – Hi-Fi World , Noel Keywood
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The original sound... Ask many of the most respected music Because of their speed and neutrality, industry professionals in the world what they are unaffected by the overhang their speaker of choice is - the answer and self-imposed character of moving- is surprisingly common. The Quad ESL coil alternatives. opens a window on a recording unlike any other speaker. The Quad ESL has been used by Tony Faulkner (shown left recording at Henry More hi-fi critics regard the Quad ESL as Wood Hall in
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Quad ESL-2905 The ESL-2905 is the larger of the two coupled to stainless steel support models - it employs a grand total of structures, with a piano gloss wooden six electrostatic panels; the inner trim. The substantial base construction two utilising the concentric rings is finished with piano gloss side cheeks of anodes used to create the point and high-quality terminations. source image. Internally, the highest quality The ESL-2905 has a fifty-percent greater components are used, inclu
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Quad ESL 2905 Horizontal Directivity
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Quad ESL-2805 The ESL-2805 is the smaller of the two The clarity of mid-range - for which the models and uses four panels rather Quads are most famed - is fully in evidence; than six. The inner two panels of the the sparkling detail and transparency has ESL-2805 again utilise the concentric long been the hallmark of this series. anode rings for point source imaging, and the outer rings are again linear in With a base weight of 34.8kg, together their response. with the rigid bracing, the ESL
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Quad ESL 2805 Horizontal Directivity
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ESL 2805 & 2905 Specifications Model ESL 2805 ESL 2905 Construction Format Floor-Standing Dipole with 3˚ Tilt Back Floor-Standing Dipole with 3˚ Tilt Back Type Full-range Electrostatic Full-range Electrostatic 2 2 Membrane Ultra Low Mass (0.5g/m ) Tensioned Film Ultra Low Mass (0.5g/m ) Tensioned Film Panel Elements 6 4 Time Delay Progressive Concentric Rings Progressive Concentric Rings Chassis Structure Heavy Duty Composite Aluminium / Steel Heavy Duty Composite Aluminium / Steel Acoustic Perf
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Quad Product Range Reference series Electrostatic Loudspeakers • ESL - 2805 • ESL - 2905 ESL - 2805 Performance series Loudspeakers Electronics • L-ITE2 5.1 System • 99 CDP-2 • L-ITE2 Mini Loudspeaker - Pair • 99 CD-S • L-ITE2 Centre Loudspeaker - Single • 99 Pre • 9L2 Loudspeaker - Pair • 99 Stereo • 11L2 Loudspeaker - Pair • 99 Tuner • 12L2 Loudspeaker - Pair • 909 Stereo • 21L2 Loudspeaker - Pair • 909 Mono • 22L2 Loudspeaker - Pair • L2 Centre Loudspeaker - Single • L2 Subwoofer - Single •
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Quad Electroacoustics Ltd, IAG House, Sovereign Court, Ermine Business Park, Huntingdon, Cambs, PE29 6XU Tel :- 01480 447700, 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.8.2006
