ESL 2805 & ESL 2905 R e f er e nc e series the closest approach to the original sound.
Quad ESL The Contemporary Electrostatic Loudspeaker Design The new ESL-2805 and ESL-2905 Electrostatics are Quad’s latest reference loudspeakers and like their predecessors should be regarded amongst the finest loudspeakers in the world today. In areas such as transparency, and lack of colouration, they are without peer.
Quad products stand alone in the hi-fi world - renowned for their longevity; quality of build; and consistently high standard of performance. Our awardwinning service department regularly maintains products over 50 years in age. Products which still bring their owners immeasurable pleasure. Quad products are designed with the single aim of reproducing recorded music as accurately as possible.
The case for a closer approach... The moving-coil conundrum A moving-coil speaker consists of a wire coil suspended inside a magnet. When an audio signal passes through the coil a varying magnetic field is set up which interacts with the magnet and causes the coil to move back and forth. A cone (or in the case of high frequency speakers, a dome) is attached to the coil, which compresses and rarifies the air generating sound waves.
Electrostatic The alternative Although deeply flawed, their cost and convenience advantages are such that the overwhelming majority of loudspeakers in today’s marketplace are moving-coil, and at Quad we manufacture some of the finest examples of this genre. But, as a counsel of perfection, we have to look elsewhere.
"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.
electrostatic The principle Naturally produced sound emanates from a point. Virtually no loudspeaker comes close to achieving this – but the Quad approach comes closest of all. 1. A perfect point source produces a spherical wave pattern. The ESL is dipolar, producing front and rear radiation. It has no box so there is no colouration. Using large panels ensures well-maintained bass to well below 40Hz.
Construction process of an ESL 2905
ESL home theatre The for Whilst for most ESL customers the important factor is performance with two-channel stereo sources, be those analogue or digital, for a growing number of customers 'home cinema' or even multi-channel music is now also becoming an important consideration. To create a system which is able to excel at both is a difficult task.
"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.
original The sound... Ask many of the most respected music industry professionals in the world what their speaker of choice is - the answer is surprisingly common. The Quad ESL opens a window on a recording unlike any other speaker. More hi-fi critics regard the Quad ESL as an absolute reference for their listening than any other loudspeaker.
Quad ESL-2905 The ESL-2905 is the larger of the two models - it employs a grand total of six electrostatic panels; the inner two utilising the concentric rings of anodes used to create the point source image. The ESL-2905 has a fifty-percent greater diaphragm area than its smaller brother. This increase allows for a markedly improved bass response, and greatly enhanced dynamics. The ESL-2905 is therefore a good choice for those in larger rooms, or those seeking more drama on big pieces.
Quad ESL 2905 Horizontal Directivity
Quad ESL-2805 The ESL-2805 is the smaller of the two models and uses four panels rather than six. The inner two panels of the ESL-2805 again utilise the concentric anode rings for point source imaging, and the outer rings are again linear in their response. Whilst the absolute bass extension and dynamic ability are less than its larger brother (it lacks the two supplementary panels of the 2905), the ESL-2805 offers a sublime performance nonetheless.
Quad ESL 2805 Horizontal Directivity
ESL 2805 & 2905 Specifications Model ESL 2805 ESL 2905 Floor-Standing Dipole with 3˚ Tilt Back Floor-Standing Dipole with 3˚ Tilt Back Full-range Electrostatic Full-range Electrostatic Ultra Low Mass (0.5g/m2) Tensioned Film Ultra Low Mass (0.5g/m2) Tensioned Film 4 6 Progressive Concentric Rings Progressive Concentric Rings Heavy Duty Composite Aluminium / Steel Heavy Duty Composite Aluminium / Steel 2N/m2 at 2m on axis 2N/m2 at 2m on axis 1.5 mbar per volt referred to 1m. 1.
Quad Product Range Reference series Electrostatic Loudspeakers • ESL - 2805 • ESL - 2905 ESL - 2805 Perfo r m a n c e series Loudspeakers Electronics • • • • • • • • • • • • • • • • • • L-ITE2 5.
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.
