Page 2 - ONTENTS
The lightning bolt flash with arrowhead symbol, withinan equilateral triangle, is intended to alert the user tothe presence of uninsulated “dangerous voltage” within theproduct’s enclosure that may be of sufficient magnitudeto constitute a risk of electric shock. The exclamation point within an equi...
Page 3 - NSTALLATION IN
3 Installation in Brief 3 I NSTALLATION IN B RIEF We 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. It will give y...
Page 4 - NTRODUCTION; Signal Connection
AC Power Connection Introduction 4 Introduction & Operation I NTRODUCTION & O PERATION 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 es...
Page 5 - PERATION; High-Frequency Softening Switch
O PERATION Operation 5 A variety of speaker cables are now available whose manufacturers claim better performance over standard heavy gauge wire. We have verified this in many cases, and the improvements available are often more noticeable than the differences between wires of different gauge. The e...
Page 6 - LACEMENT; The Wall Behind the Listener; Listening Position
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. Your sitting distance should be farther than the distance between the speakers themselves. ...
Page 7 - Final Placement; The Extra “Tweak”
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...
Page 8 - Terminology; OOM; Your Room
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. Your room is actually a component and an important part of your system. This component is a very large variable and ca...
Page 9 - Dipolar Speakers and Your Room; Solid Footing
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 f...
Page 10 - Controlled Vertical Dispersion; ISPERSION
10 Dispersion Interactions Your 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 Figure 2). Make sure both speakers stand exactly at the same ve...
Page 12 - LECTROSTATIC
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, diaphragms and ribbons that are moved with magnetism, the world of electrostatic loudspeakers deals with...
Page 14 - Full Range Operation
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. The CLS IIz consists of a single,...
Page 15 - Vapor Deposited Film; ARTIN
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 m...
Page 16 - Rice and Kellogg had
16 Electrostatic Loudspeaker History In the late 1800s, any loudspeaker was considered exotic. Today, 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 sty...
Page 17 - These developments allow
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. The test instrument needed an extremely accurate speaker, but Janszen found tha...
Page 18 - REQUENTLY
18 Frequently Asked Questions F REQUENTLY A SKED Q UESTIONS How do I clean my speakers? Just use a dust free cloth or a soft brush to remove the dust from your speakers. We recommend a specialty cloth (available through the Xtatic shop at www.martinlogan.com) that cleans your speakers better than an...
Page 20 - ROUBLESHOOTING
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. Weak Output, Loss of Highs •Check the power cord. Is it properly connected to the speaker? Exaggerated Highs, Brightness •...
Page 21 - Service; ENERAL; Warranty and Registration
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. This was achieved by curving t...
Page 22 - LOSSARY OF
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...
