QUADメーカーESL 2905の使用説明書/サービス説明書
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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.
デバイスQUAD ESL 2905の購入後に(又は購入する前であっても)重要なポイントは、説明書をよく読むことです。その単純な理由はいくつかあります:
QUAD ESL 2905をまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはQUAD ESL 2905の技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。QUAD ESL 2905の取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。QUAD ESL 2905で得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
QUAD ESL 2905を既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はQUAD ESL 2905の不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、QUAD ESL 2905に関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちQUAD ESL 2905デバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。