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

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