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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.

Full range electrostats have long been one of the most

problematic transducers because they attain their full range

capabilities via a large surface area. It looked as if they

were in direct conflict to smooth dispersion and almost

every attempt to correct this resulted in either poor disper-

sion or a serious compromise in sound quality.

After extensive research, MartinLogan engineers discovered

an elegantly simple solution to achieve a smooth pattern of

dispersion without degrading sound quality. By curving the

horizontal plane of the electrostatic transducer, a con-

trolled horizontal dispersion pattern could be achieved, yet

the purity of the almost massless electrostatic diaphragm

remained uncompromised. After creating this technology,

MartinLogan developed the production capability to bring

it out of the laboratory and into the market place.

You will find this proprietary MartinLogan technology used in

all of our products. It is one of the many reasons behind our

reputation for high-quality sound with practical usability.

This is also why you see the unique “see through” cylindri-

cal shape of all MartinLogan products.

The diaphragm material used in all MartinLogan speakers

employs an extremely sophisticated conductive surface

that has been vapor deposited on the polymer surface at

an atomic level. A proprietary compound is vaporized then

electrostatically driven into the surface of the polymer film

in a vacuum chamber. This process allows an optically

transparent surface adding no mass to the diaphragm that

is extremely uniform in its surface resistivity characteristics.

This uniform surface resistivity controls the electrostatic

charge on the diaphragm surface and regulates its migration.

As a result, no discharging or “arcing” can occur.

Transducer Integrity

All MartinLogan transducers begin with two pieces of

high-grade, cold rolled steel. These steel pieces are then

custom perforated and insulated with a unique composite

coating. This proprietary coating insulates the stator to

three times its actual needed working voltage and gives

the CLS IIz a wide margin of safe operation. In addition to

the electrical insulation properties, this coating also provides

the CLS IIz with a durable, attractive finish that dampens the

steel to prevent ringing. These pieces are then sandwiched

with our exclusive vapor deposited diaphragm and spacers

into a curved geometry and bonded together with aerospace

adhesives whose strength exceeds that of welding.

The result of these advanced technologies is a transducer that

is attractive, durable, highly rigid, well dampened and neutral.

Curvilinear Line Source (CLS

)

Vapor Deposited Film

MartinLogan Exclusives 15

ARTIN

OGAN

XCLUSIVES

Содержание CLS IIz

Страница 1: ...C L STM IIz u s e r s m a n u a l c l s e l e c t r o s t a t i c M A R T I N L O G A N ...

Страница 2: ...Signal Connection Break In High Frequency Softening Switch Placement 6 Listening Position The Wall Behind the Listener The Wall Behind the Speakers The Side Walls Experimentation Final Placement The Extra Tweak Enjoy Yourself Room Acoustics 8 Your Room Terminology Rules of Thumb Dipolar Speakers and Your Room Solid Footing Dispersion Interactions 10 Controlled Horizontal Dispersion Controlled Vert...

Страница 3: ...tronics Module Now attach the electronics module to the wooden trans ducer frame using the Allen head cap screws and finish washers Please start the cap screws by hand to prevent stripping then tighten with the provided Allen head tool Step 4 Install the Adjustable Feet Attach the enclosed feet to the bottom of the wooden transducer frame and electronics by threading into the metal inserts located...

Страница 4: ...formance and pleasure from this most exacting transducer It has been designed and constructed to give you years of trouble free listening enjoyment Because your MartinLogan CLS IIz s use an internal power supply to energize their electrostatic cells with high volt age DC they must be connected to an AC power source For this reason they are provided with the proper IEC standard power cords These co...

Страница 5: ...and right channel speakers If bass is nonexistent and you cannot discern a tight coherent image you may need to reverse the and leads on one speaker to bring the system into proper polarity WARNING Turn your amplifier off before making or breaking any signal connections When you first begin to play your CLS IIz speakers allow 90 hours of break in at 90 dB moderate listening levels before any criti...

Страница 6: ...ghtness and confused imaging Curtains drapery and objects such as bookshelves can be placed along the wall to soften a hard surface A standard sheet rock or textured wall is generally an adequate surface if the rest of the room is not too bright and hard Sometimes walls can be too soft If the entire front wall consists of only heavy drapery your system can sound too soft or dull You may hear dull ...

Страница 7: ...l placement from the front wall Now experiment with placing the speakers farther apart As the speakers are positioned farther apart listen again not so much for bass response but for stage width and good pinpoint focusing Your ideal listening position and speaker position will be determined by Tightness and extension of bass response Width of the stage Pinpoint focusing of imaging Once you have de...

Страница 8: ...maller sound waves are mostly affected here and occur in the mid and high frequencies This is where voice and frequencies as high as the cymbals occur Resonant Surfaces and Objects All of the surfaces and objects in your room are subject to the frequencies generated by your system Much like an instrument they will vibrate and carry on in syncopation with the music and contribute in a negative way ...

Страница 9: ...ion as it arrives at your ears later in time can result in confusion of the pre cious timing information that carries the clues to imaging Consequently the result is blurred imaging and excessive brightness Soft walls curtains wall hangings or sound dampeners your dealer can give you good information here can be effective if these negative conditions occur After living and experimenting with your ...

Страница 10: ...y smaller than the transducer producing it the dispersion of that wave becomes more and more narrow or directional This fact occurs as long as the transducer is a flat surface Large flat panel speakers exhibit venetian blind effects due to this phenomenon This is why most manufacturers opt for small drivers i e tweeters and midrange to approximate what is known as a point source wave launch Histor...

Страница 11: ...sequently confused and blurred Figure 6 7 Even though they suffer from venetian blind effect angled multiple panel speakers can deliver good imaging but only to specific spots in the listening area Figure 8 9 A controlled 30 degree cylindrical wave front which is a MartinLogan exclusive offers optimal sound distribution with minimal room interaction The result is solid imaging with a wide listenin...

Страница 12: ... the air and create music The stator s job is to remain stationary hence the word stator and to provide a reference point for the moving diaphragm The spacers provide the diaphragm with a fixed distance in which to move between the stators As your amplifier sends music signals to an electrostatic speaker these signals are changed into two high voltage signals that are equal in strength but opposit...

Страница 13: ...ncept of these drivers requires that the cone or dome be perfectly rigid damped and massless Unfortunately these conditions are not available in our world today To make these cones and domes move all electromagnetic drivers must use voice coils wound on formers spider assemblies and surrounds to keep the cone or dome in position See Figure 12 These pieces when combined with the high mass of the co...

Страница 14: ...nd then combined electrically so that the sum of the parts equals the total signal While nice in theory we must deal with real world conditions In order to use multiple drivers a crossover network is enlisted to attempt a division of the complex musical signal into the separate pieces usually highs mids and lows that each specific driver was designed to handle Unfortunately due to the phase relati...

Страница 15: ...roducts The diaphragm material used in all MartinLogan speakers employs an extremely sophisticated conductive surface that has been vapor deposited on the polymer surface at an atomic level A proprietary compound is vaporized then electrostatically driven into the surface of the polymer film in a vacuum chamber This process allows an optically transparent surface adding no mass to the diaphragm th...

Страница 16: ...ectrostatic speaker After a short time Rice and Kellogg had narrowed the field of contestants down to the cone and the electrostat The outcome would dictate the way that future generations would refer to loudspeakers as being either conventional or exotic Bell Laboratory s electrostat was something to behold This enormous bipolar speaker was as big as a door The diaphragm which was beginning to ro...

Страница 17: ... problems It could not be played very loud it had poor bass performance it presented a difficult load that some amplifiers did not like its dispersion was very directional and its power handling was limited to around 70 watts As a result many people continued to use box speakers with cones In the early 1960s Arthur Janszen joined forces with the KLH loudspeaker company and together they introduced...

Страница 18: ...ne else nuts in another We use many brands with great success Again we have no favorites we use electronics and cables quite interchangeably We would suggest listening to a number of brands and above all else trust your ears Dealers are always the best source for information when purchasing additional audio equipment Is there likely to be any interaction between my speakers and the television in m...

Страница 19: ...not charged and cannot collect dust You can get the same benefit by simply unplugging them whenever they are not in use An easy way to do that is with a power strip that has a switch Could my children pets or myself be shocked by the high voltage present in the electrostatic panel No High voltage with low current is not dangerous As a matter of fact the voltage in our speakers is 10 times less tha...

Страница 20: ...he polarity correct Poor Imaging Check placement Are both speakers the same distance from the walls Do they have the same amount of toe in Try moving the speakers away from the back and side walls Check the polarity of the speaker wires Are they connected properly Popping and Ticking Sounds Funny Noises These occasional noises are harmless and will not hurt your audio system or your speakers All e...

Страница 21: ...aler receipt to MartinLogan within 30 days of purchase MartinLogan may not honor warranty service claims unless we have a completed Warranty Registration card on file If you did not receive a Certificate of Registration with your new CLS IIz speakers you cannot be assured of having received new units If this is the case please contact your authorized MartinLogan dealer Service Should you be using ...

Страница 22: ...ds is ten times the Base 10 logarithm of the ratio of their power levels DC Abbreviation for direct current Diffraction The breaking up of a sound wave caused by some type of mechanical interference such as a cabinet edge grill frame or other similar object Diaphragm A thin flexible membrane or cone that vibrates in response to electrical signals to produce sound waves Distortion Usually referred ...

Страница 23: ...nce That property of a conductor by which it opposes the flow of electric current resulting in the generation of heat in the conducting material usually expressed in ohms Resistor A device that is used in a circuit primarily to provide resistance Resonance The effect produced when the natural vibration frequency of a body is greatly amplified by reinforcing vibrations at the same or nearly the sam...

Страница 24: ...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 A R T I N L O G A N 2002 MartinLogan All rights reserved Rev 052902 ...

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