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TM
PURITY
Fully Powered Hybrid Electrostatic Loudspeaker
user’s manual
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Thank you—to you the MartinLogan owner, for loving what we do, and for making it possible for us to do what we love. Purity Tested to Comply with FCC Standards FOR HOME OR OFFICE USE This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) Serial Numbers: _______________ / _______________ This device may not cause harmful Record your serial numbers here for easy reference. You will need this interference, and (2) this device must inform
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CONTENTS Vacuum Bonding Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 AirFrame™ Technology Installation in Brief. . . . . . . . . . . . . . . . . . . . 4 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrostatic Loudspeaker History . . . . . . . . 17 Connections & Controls . . . . . . . . . . . . . . . . 6 Frequently Asked Questions. . . . . . . . . . . . 19 AC Power Connection Troubleshooting . . . . . . . . . . . . . . . . . . . . . 21 Status Light Gen
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INSTALLATION IN BRIEF We know you are eager to hear your Purity speakers, Step 1: Unpacking so this section is provided to allow fast and easy set up. Remove your new Purity speakers from their packaging. Once you have them operational, please take the time to read, in depth, the rest of the information in this manual. Step 2: Placement It will give you perspective on how to attain the greatest Place each Purity at least two feet from the back wall and possible performance from this most exact
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INTRODUCTION Congratulations! You have invested in one of Featuring an advanced crossover topology, MartinLogan the world’s premier loudspeaker systems. carefully builds each Purity crossover utilizing precision audiophile-grade components to preserves sonic subtleties Internally powered with a high-resolution digital ampli- while effortlessly handling the broadest range of dynamics fier, the Purity provides an unprecedented level of system contained within even the most demanding sonic sour
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your speaker slightly forward into the room. What hap- of your system. It can dramatically add to, or subtract pened to the bass response? What happened to the from, a great musical experience. imaging? If the imaging is more open and spacious and the bass response is tightened, that is a superior posi- All sound is composed of waves. Each note has its own tion. Move the speakers back six inches from the initial wave size, with the lower bass notes literally encompassing setup position and a
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back? You have near-field reflections. Stomp your foot. ing. Consequently the result is blurred imaging and excessive Can you hear a “boom”? You have standing waves or brightness. Soft walls, curtains, wall hangings, or sound large panel resonances such as a poorly supported wall. dampeners (your dealer can give you good information here) Put your head in a small cavity area and talk loudly. Hear can be effective if these negative conditions occur. a booming? You’ve just experienced a cavity
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HOME THEATER It had long been the practice of stereo buffs to connect their and that it is recommended for use as a center speaker. television to a stereo system. The advantage was the use This is not the place to cut corners. of the larger speakers and more powerful amplifier of the stereo system. Even though the sound was greatly improved, it Surround Speakers was still mono and limited by the broadcast signal. We recommend (along with the film industry) that the sur- round speakers play dow
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CLS™ (Curvilinear Line Source) MicroPerf Stator Since the beginning of audio, achieving smooth dispersion Sleek. Compact. MicroPerf stator technology, featured in has been a problem for all designers. Large panel trans- Purity’s electrostatic transducer, reveals more open play- ducers present unique challenge because the larger the able area in each panel, offering increased performance panel, the more directional the dispersion pattern becomes. from even more compact stat panels. It is si
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ELECTROSTATIC HISTORY In the late 1800’s, any loudspeaker was considered exotic. After a short time, Rice and Kellogg had narrowed the field Today, most of us take the wonders of sound reproduction for of “contestants” down to the cone and the electrostat. The out- granted. come would dictate the way that future generations would refer to loudspeakers as being either “conventional” or “exotic”. It was 1880 before Thomas Edison had invented the first phonograph. This was a horn-loaded diaphrag
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In 1947, Arthur Janszen, a young Naval engineer, took part was very directional and its power handling was limited to in a research project for the Navy. The Navy was interest- around 70 watts. As a result, many people continued to use ed in developing a better instrument for testing microphone box speakers with cones. arrays. The test instrument needed an extremely accurate speaker, but Janszen found that the cone speakers of the peri- In the early 1960’s Arthur Janszen joined forces with th
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FREQUENTLY ASKED QUESTIONS How do I clean my speakers? This is caused by grounding and static discharge inter- Use a dust free cloth or a soft brush to remove the dust action. It is normal and to be expected when using this from your speakers. We also recommend a specialty method of connection. If a cable is connected to the cloth (available at the Xtatic shop at www.martinlogan. speaker, but is left unterminated at the device end you com) that cleans your speakers better than anything else m
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Will excessive smoke or dust cause any prob- How do MartinLogan speakers hold up over a lems with my electrostatic speakers? long term in the humidity of tropical climates? Exposure to excessive contaminants such as smoke We should tell you that MartinLogan indeed has a very or dust may potentially affect the performance of the substantial number of customers in tropical regions of electrostatic membrane, and may cause discoloration the world. Our speakers have been serving them nicely of th
