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Summary of Contents for MartinLogan CLS IIz
- Page 1 C L S u s e r ’ s m a n u a l A R T I N O G A N...
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Page 2: Table Of Contents
Electrostatic Advantages ......12 Full Range Operation MartinLogan Exclusives ......15 Curvilinear Line Source... -
Page 3: Installation In Brief
‘tilt’ of the speaker system. Step 5: Placement Place each CLS IIz at least two feet from any wall and angle them slightly toward your listening area. This is a good place to start. Please see the Placement section (pages 6–7) of this manual for more details. -
Page 4: Introduction
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. -
Page 5: Break-In
WARNING! Turn your amplifier off before making or breaking any signal connections! Break-In When you first begin to play your CLS IIz speakers allow 90 hours of break-in at 90 dB (moderate listening levels) before any critical listening. The CLS will benefit from the initial break in process like any conventional driver. -
Page 6: Placement
In long rooms, naturally, that relationship changes. The distance between the speakers will be far less than the distance from you to the speaker system. However, in a wide room, you will still find that if... -
Page 7: Final Placement
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: Room Acoustics
Reflective Surfaces (near-field reflections) The hard surfaces of your room, particularly if close to your speaker system, will reflect some waves back into the room over and over again, confusing the clarity and imaging of your system. The smaller sound waves are mostly affected here, and occur in the mid and high frequencies. -
Page 9: Dipolar Speakers And Your Room
Figure 1), which are available from your local MartinLogan dealer or on our website at www.martinlogan.com. With the use of these spikes, the CLS IIz will become more firmly planted on the floor and, consequently, bass will tighten and imaging will become more coherent and detailed. It is... -
Page 10: Dispersion Interactions
This allows the engineers at MartinLogan to control the high frequency dispersion pattern of our transducers. That is why you see the gentle curve on our products. Figure 3. Your CLS IIz speaker system is a 48 inch line source viewed vertically. - Page 11 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 listening area.
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Page 12: Electrostatic Advantages
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 opposite in polarity. These high voltage signals are then applied to the stators. - Page 13 Since the diaphragm of an electrostatic speaker is uniformly driven over its entire area, it can be extremely light and flexible. This allows it to be very responsive to transients, thus perfectly tracing the music signal. As a result, great delicacy, nuance and clarity are possible.
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Page 14: Full Range Operation
The CLS IIz uses no crossover networks because they are not needed. The CLS IIz consists of a single, seamless elec- trostatic membrane reproducing all frequencies. How is this possible? First we must understand that music is not composed of separate high, mid and low frequency pieces. -
Page 15: Martinlogan Exclusives
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. -
Page 16: Electrostatic Loudspeaker History
However, Lodge had no intention for his device to reproduce music because in 1898 there was no way to amplify an electrical signal! As a result, his speaker had nothing to offer over the acoustical gramophones of the period. It was not until 1906 that Dr. Lee DeForrest invented the triode vacuum tube. - Page 17 The test instrument needed an extremely accurate speaker, but Janszen found that the cone speakers of the period were too nonlinear in phase and amplitude response to meet his criteria. Janszen believed that electrostats...
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Page 18: Frequently Asked Questions
Audio/Video system? Actually, there is less interaction between a television and an electrostatic speaker than between a television and a conventional system. You will find the CLS IIz does not degrade your televisions picture, even if placed directly beside your television. - Page 19 How do MartinLogan speakers hold up over a long term in the humidity of tropical climates? We should tell you that MartinLogan indeed has a very substantial number of customers in tropical regions of the world.
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Page 20: Troubleshooting
•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 •Check the toe-in of the speakers. Read Placement (pages 8–9) for more information. -
Page 21: Service
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. -
Page 22: Glossary Of Audio Terms
Impedance. The total opposition offered by an electric circuit to the flow of an alternating current of a single frequency. It is a combination of resistance and reactance and is measured in ohms. Remember that a speaker’s impedance changes with frequency, it is not a constant value. - Page 23 Sensitivity. The volume of sound delivered for a given electrical input. Stator. The fixed part forming the reference for the moving diaphragm in a planar speaker. THD. The abbreviation for total harmonic distortion. (See Distortion.) TIM. The abbreviation for transient intermodulation distortion.
- Page 24 A R T I N O G A N 2101 Delaware Street, Lawrence, Kansas 66046, USA tel 785.749.0133 fax 785.749.5320 www.martinlogan.com ©2002 MartinLogan, All rights reserved Rev. #052902...
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