Manuel d'utilisation / d'entretien du produit CLS IIz du fabricant MartinLogan
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CLS TM IIz user ’s manual c l s e l e c t r o s t a t i c M ART I N L OGA N.
The lightning bolt flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated “ dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock.
3 Installation in Brief 3 I NST ALLA TION IN B RIEF W e know you are eager to hear your new CLS IIz loudspeakers, so this section is provided to allow fast and easy set up. Once you have them operational, please take the time to read, in depth, the rest of the information in this manual.
AC Power Connection Introduction 4 Introduction & Operation I NTRODUCTION & O PERA TION Congratulations! Y ou have invested in one of the world’s premier loudspeak er systems.
O PERA TION Operation 5 A variety of speaker cables are now available whose manufacturers claim better performance over standard heavy gauge wire. W e have verified this in many cases, and the improvements available are often more noticeable than the differences between wires of different gauge.
6 Placement P LACEMENT By now your speakers should be placed approximately two to three feet from the front wall, the wall in front of the listening position, and at least one to two feet from the side walls. Y our sitting distance should be farther than the distance between the speakers themselves.
Placement 7 Imaging In their final location, your CLS IIz’s should have a stage width somewhat wider than the speakers themselves. On well- recorded music, the instruments should extend beyond the edges of each speaker to the left and to the right, yet a vocalist should appear directly in the middle.
8 Room Acoustics This is one of those areas that requires both a little back- ground to understand and some time and experimentation to attain the best performance from your system. Y our room is actually a component and an important part of your system.
Room Acoustics 9 on the floor or solid surface, it can shake as it produces sound and, consequently , the sound can be compromised. If your speaker is sitting on the carpet and only foot gliders are used, the bass can be ill defined and even boomy . The use of spikes is recommended to insure secured footing for your speakers.
10 Dispersion Interactions Y our CLS IIz’s launch a 30-degree dispersion pattern when viewed from above. This horizontal dispersion field gives a choice of good seats for the performance while minimizing interactions with side walls (See F igure 2).
Dispersion Interactions 11 Figure 4– 5. As can be seen here, point source concepts invite a great deal of room interaction. While delivering good frequency response to a large listening audience, imaging is consequently confused and blurred. Figure 6– 7.
How can sound be reproduced by something that you are able to see through? Electrostatic energy makes this possible. Where the world of traditional loudspeaker technology deals with cones, domes, diap.
Since the diaphragm of an electrostatic speaker is uniformly driven over its entire area, it can be extremely light and flexible. This allows it to be very responsive to transients, thus perfectly tracing the music signal. As a result, great delicacy , nuance and clarity are possible.
Critical Zone: 200Hz–20kHz The most significant advantage of MartinLogan ’s exclusive transducer technology reveals itself when you look at examples of other loudspeaker products on the market today . The CLS IIz uses no crossover networks because they are not needed.
Since the beginning of audio, achieving smooth dispersion has been a problem for all loudspeaker designers. Large- panel transducers present even more of a challenge because the larger the panel, the more directional the dispersion pattern becomes.
16 Electrostatic Loudspeaker History In the late 1800s, any loudspeaker was considered exotic. T oday , most of us take the wonders of sound reproduction for granted. It was 1880 before Thomas Edison had invented the first phonograph. This was a horn-loaded diaphragm that was excited by a playback stylus.
Electrostatic Loudspeaker History 17 In 1947, Arthur Janszen, a young Naval engineer , took part in a research project for the Navy . The Navy was interested in developing a better instrument for testing microphone arrays.
18 Frequently Asked Questions F REQUENTL Y A SKED Q UESTIONS How do I clean my speak ers? Just use a dust free cloth or a soft brush to remove the dust from your speakers. W e recommend a specialty cloth (available through the Xtatic shop at www .martinlogan.
Frequently Asked Questions 19 Will excessive smok e or dust cause any problems with my electrostatic speak ers? Exposure to excessive contaminants such as smoke or dust may potentially affect the performance of the electrostatic membrane, and may cause discoloration of the diaphragm membrane.
20 Troubleshooting T ROUBLESHOOTING No Output •Check that all your system components are turned on. •Check your speaker wires and connections. •Check all interconnecting cables. W eak Output, Loss of Highs • Check the power cord. Is it properly connected to the speaker? Exaggerated Highs, Brightness • Check the toe-in of the speakers.
21 The CLS IIz hybrid speaker system consists of a broad- range single-element electrostatic transducer integrated with a quick-response woofer . This approach takes advan- tage of the benefits that both technologies have to offer . Dispersion is a controlled 30 degrees.
AC. Abbreviation for alternating current. Active crossover . Uses active devices (transistors, ICs, tubes) and some form of power supply to operate. Amplitude. The extreme range of a signal. Usually measured from the average to the extreme. Arc. The visible sparks generated by an electrical discharge.
23 Inductance. The property of an electrical circuit by which a varying current in it produces a varying magnetic field that introduces voltages in the same circuit or in a nearby circuit. It i s measured in henrys. Inductor . A device designed primarily to introduce inductance into an electrical circuit.
2101 Delaware Street, Lawrence, Kansas 66046, USA tel 785.749.0133 fax 785.749.5320 www.martinlogan.com c l s e l e c t r o s t a t i c M ART I N L OGA N ©2002 MartinLogan, All rights reserved Rev.
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté MartinLogan CLS IIz c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du MartinLogan CLS IIz - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation MartinLogan CLS IIz, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le MartinLogan CLS IIz va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le MartinLogan CLS IIz, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du MartinLogan CLS IIz.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le MartinLogan CLS IIz. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei MartinLogan CLS IIz ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
