MartinLogan CLS IIz user manual Introduction & Operation, AC Power Connection, Signal Connection

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INTRODUCTION & OPERATION

Introduction

Congratulations! You have invested in one of the world’s premier loudspeaker systems.

The MartinLogan CLS IIz represents the culmination of an intensive, dedicated group research program directed toward establishing a world class reference monitor utilizing leading-edge technology, without compromising durability, reliability, craftsmanship or aesthetic design.

The result of cumulative technology gleaned from previous research and development projects, the CLS IIz represents the latest developments in electrostatic loudspeaker technology.

The materials in your new CLS IIz speakers are of the highest quality and will provide years of enduring enjoyment and deepening respect. All wood pieces are constructed from selected hardwoods. They are grain and color matched and finally hand finished.

Through rigorous testing, the curvilinear electrostatic panel has proven itself to be one of the most durable and reliable transducers available today. Fabricated from a custom tool punched high-grade steel, the patented panel is then coated with a special polymer that is applied via a proprietary electrostatic deposition process. This panel assembly houses a membrane just 0.0005 of an inch thick. Ruggedly con- structed and insulated, as much as 200 watts of continuous power has driven the CLS IIz’s energized diaphragm into massive excursions with no deleterious effects.

The other sections of your User’s Manual will explain in detail the operation of your CLS IIz speakers and the philosophy applied to their design. A clear understanding of your speakers will insure that you obtain maximum per- formance and pleasure from this most exacting transducer. It has been designed and constructed to give you years of trouble-free listening enjoyment.

AC Power Connection

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 cords should be firmly inserted into the AC power receptacles on the rear connection panel of the speakers, then to any convenient AC wall outlet. The CLS IIz’s integrate a signal-sensing power supply which will switch off after a few minutes of no music signal and requires less than two seconds to recharge the panels when a music signal is present.

Your CLS IIz speakers are wired for the power service sup- plied in the country of original consumer sale. The AC power rating applicable to a particular unit is specified both on the packing carton and on the serial number plate attached to the speaker.

If you remove your CLS IIz speakers from the country of original sale, be certain that AC power supplied in any subsequent location is suitable before connecting and operating the speakers. Substantially impaired performance or severe damage may occur to a CLS IIz speaker if opera- tion is attempted from an incorrect AC power source.

WARNING! The power cord should not be installed, removed, or left detached from the speaker while the other end is connected to an AC power source.

Signal Connection

Use the best speaker cables you can. The length and type of speaker cable used in your system will have an audible effect. Under no circumstance should a wire of gauge higher (thinner) than #16 be used. In general, the longer the length used, the greater the necessity of a lower gauge, and the lower the gauge, the better the sound, with diminishing returns setting in around #8 to #12.

4 Introduction & Operation

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Contents STM IIz Contents Installation in Brief AC Power Connection Signal ConnectionIntroduction & Operation IntroductionHigh-Frequency Softening Switch OperationBreak-In OperationPlacement Extra Tweak Final PlacementEnjoy Yourself Room Acoustics Your RoomTerminology Rules of ThumbDipolar Speakers and Your Room Solid FootingDispersion Interactions Controlled Horizontal DispersionControlled Vertical Dispersion Three Major Types of DispersionDispersion Interactions Electrostatic Advantages Electrostatic AdvantagesElectrostatic Advantages Full Range Operation Martinlogan Exclusives Curvilinear Line Source ClstmVapor Deposited Film Transducer IntegrityElectrostatic Loudspeaker History Electrostatic Loudspeaker HistoryElectrostatic Loudspeaker History Frequently Asked Questions How do I clean my speakers? What is the advantage of ESL?Frequently Asked Questions What size amplifier should I use?Frequently Asked Questions Troubleshooting Specifications Warranty and RegistrationService General InformationGlossary of Audio Terms Glossary of Audio TermsGlossary of Audio Terms MartinLogan, All rights reserved Rev. #052902

CLS IIz specifications

The MartinLogan CLS IIz is a sophisticated hybrid electrostatic loudspeaker that exemplifies the brand's commitment to innovation and exceptional audio performance. This model is a continuation of the legendary CLS design, which has garnered a loyal following among audiophiles and music enthusiasts alike.

One of the standout features of the CLS IIz is its electrostatic transducer design. Unlike conventional dynamic speakers that rely on moving coils and cones, electrostatic speakers use a thin, electrically charged diaphragm sandwiched between two stators. This design allows the CLS IIz to produce sound with extraordinary clarity, speed, and precision, making it particularly well-suited for accurately reproducing the nuances of vocal performances and acoustic instrumentation.

The CLS IIz also integrates a new, more advanced version of the brand's Curvilinear Line Source technology. This innovation provides a wider and more consistent sound dispersion pattern, resulting in an expansive soundstage that immerses listeners in their favorite recordings. The speaker’s tall, slender design further enhances this effect, allowing for an impressive imaging capability that places sounds precisely within the listening environment.

Another key characteristic of the CLS IIz is its frequency response. The speaker is capable of reproducing frequencies from an astonishingly low 38 Hz to a remarkable 25 kHz. This wide frequency range ensures that music and audio content are delivered with great depth and richness, fully capturing the lower bass notes while maintaining the sparkling clarity of high-frequency sounds.

In terms of build quality, the CLS IIz features a sturdy yet elegant cabinet that minimizes resonance and vibration, allowing for pure audio reproduction. The speaker's sleek aesthetic is complemented by high-quality finishes, ensuring that it looks as good as it sounds, making it an attractive addition to any audio setup.

Additionally, the CLS IIz boasts versatility in its setup, allowing for positioning flexibility that accommodates various room sizes and acoustic conditions. This ensures that enthusiasts can achieve optimal sound quality regardless of their environment.

In summary, the MartinLogan CLS IIz is a marvel of modern audio engineering that combines cutting-edge technologies with a commitment to high fidelity sound. With its electrostatic design, advanced dispersion capabilities, wide frequency response, and elegant build, the CLS IIz stands as a testament to MartinLogan's dedication to providing an unparalleled listening experience.
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