Instruction/ maintenance manual of the product ESL 2905 QUAD
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ESL 2805 & ESL 2905 the closest appr oach to the original sound. Reference series.
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Q u a d E S L T h e C o n t e m p or a ry E l e ct r o s ta t i c L o u d s pe a k e r D e s i g n T he 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 toda y .
4 Quad products stand alone in the hi-fi world - renowned for their longevity; quality of build; and consistently high standard of performance. Our award- winning service department regularly maintains products over 50 years in age. Products whic h still bring their owners immeasurable pleasure.
c l o s e r a p p r o a c h . . . A mo ving-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 w hich interacts with the magnet and causes the coil to mov e back and forth.
6 Although deeply flawed, their cost and convenience adv antages are such that the overw helming majority of loudspeakers in toda y’ 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 ha ve to look elsew here.
"I know of no other speaker I'd rather own, regardless of price. I think it's the finest hi-fi purc hase you could ever make in terms of performance and v alue-yes, it's that good. Speaker of the year? Nah. Speaker of the centuries.
8 A perfect point source produces a spherical w av e pattern. T he air particle movement at a plane some distance from the source. An identical movement in the ESL membrane produces and identical wa ve front T he membrane carries a constant charge. T he c harge on the electrodes fluctuates according to the music signal.
C on s t r uc t i o n p r o c e ss o f a n E S L 2 9 0 5.
Whilst for most ESL customers the important factor is performance with two-c hannel stereo sour ces, 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.
"By the highest standards, the 2905s get everything right to a degree that had me shaking my head in a we. T his is easily one of the most revealing and accurate loudspeakers I ha ve ever heard.
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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 .
T he 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. T he ESL-2905 has a fifty-percent greater diaphragm area than its smaller brother .
Quad ESL 2905 Horizontal Directivity.
16 T he 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.
Quad ESL 2805 Horizontal Directivity.
S p e c i f i c a t i o n s 18 Model ESL 280 5 ESL 2905 Construction F ormat T ype Membrane P anel Elements T ime Dela y Chassis Structure Acoustic Performance Maximum Output Sensitivity Impedance Imp.
Loudspeakers • L-ITE2 5.1 System • L-ITE2 Mini Loudspeaker - P air • L-ITE2 Centre Loudspeaker - Single • 9L2 Loudspeaker - P air • 11L2 Loudspeaker - P air • 12L2 Loudspeaker - P air • .
Qu.ESL.8.2006 Quad Electroacoustics Ltd, IA G House, Sovereign Court, Ermine Business P ark, Huntingdon, Cambs, PE29 6XU T el :- 01480 447700, F ax :- 01480 431767 www .quad-hifi.co.uk T he information in this brochure is subject to change without notice.
An important point after buying a device QUAD ESL 2905 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought QUAD ESL 2905 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data QUAD ESL 2905 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, QUAD ESL 2905 you will learn all the available features of the product, as well as information on its operation. The information that you get QUAD ESL 2905 will certainly help you make a decision on the purchase.
If you already are a holder of QUAD ESL 2905, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime QUAD ESL 2905.
However, one of the most important roles played by the user manual is to help in solving problems with QUAD ESL 2905. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device QUAD ESL 2905 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
