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MartinLogan i User Manual

Martinlogan cinema i center channel speakers user's manual
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Summary of Contents for MartinLogan i

  • Page 1 I N E M A u s e r ’ s m a n u a l A R T I N O G A N ®...

  • Page 2: Table Of Contents

    Electrostatic Advantages ......14 MartinLogan Exclusives ......15...

  • Page 3: Installation In Brief

    Installation in Brief We know you are eager to hear your new Cinema i center channel, so this section is provided to allow fast and easy set up. Once you have it operational, please take the time to read, in depth, the rest of the information in this manual. It will give you perspective on how to attain the greatest possible performance from this most exacting transducer.

  • Page 4: Operation

    AC wall outlet (see figure 1). Your Cinema i integrates a signal sensing circuit which will switch the Cinema i off after a few minutes of no music signal, and requires less than two seconds to recharge the panel when a music signal is present.

  • Page 5: Using Only One Power Supply

    Make certain that all of your connections are tight. Be consistent when connecting speaker leads to the terminals on the back of the Cinema i. Take great care to assign the same color to the (+) terminal on both the speaker and the amplifier.

  • Page 6: Installation

    3 under ‘Removing the Stand’, page 8. The Cinema is shipped with these 4 large hollow rubber bumper feet not installed. Figure 4. Cinema i installation on the floor, on a television and on a wall.

  • Page 7: Removing The Stand

    Cinema i stand (figure 5, step A). 3 Remove the stand (figure 5, step B). NOTE: The Cinema i uses 2 types of rubber feet. The feet refered to in the following step are large and hollow in the middle so that a screw can pass through.

  • Page 8: Mounting The Cinema I On A Wall

    1 Prepare a flat surface with padding and sheets to protect the Cinema i as you work on it. Disconnect any wires and carefully place the Cinema i upside down on the work surface, using books or pieces of cardboard to keep the speaker from rocking.
  • Page 9 (figure 10, step G). 9 Place a level across the top edge of the Cinema i stand and make sure that it is level. Mark the wall through the center of each of the 4 outer holes and the lower, center hole in the Cinema i stand (figure 11, step H).
  • Page 10 Tighten each large knob (figure 14, step K). 13 Set the Cinema i on the brackets and continue to sup- port the speaker. By hand, thread the Allen screws into the front 2 threaded inserts that are closest to the woofers.

  • Page 11: Dispersion Interactions

    (CLS) technology, giving you a choice of good seats for the performance while minimizing interaction with side walls (see figure 16). Figure 16. The MartinLogan Cinema i delivers a 30 degree wave launch dispersion pattern distributed horizontally. ISPERSION...

  • Page 12: Three Major Types Of Dispersion

    This is why most manufacturers opt for small drivers (i.e. tweeters and midrange) to approximate what is known as a point source wave launch. Figure 18–19. As can be seen here, point source concepts invite a great deal of room interaction.

  • Page 13: Home Theater

    Good subwoofers will provide a foundation for the rest of the system. Figure 24. Ascent i speakers as front channels, Cinema i as the center channel, Script i speakers as side surround (effects) channels, and Depth subwoofers as 0.1 (effects) channel.

  • Page 14: Electrostatic Advantages

    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.

  • Page 15: Martinlogan Exclusives

    This proprietary coating insulates the stator to three times its actual needed working voltage and gives the Cinema i a wide margin of safe operation. In addition to the electrical insulation properties, this coating also provides the Cinema i with a durable, attractive finish that dampens the steel to prevent ringing.

  • Page 16: Electrostatic Loudspeaker History

    “exotic”. Bell Laboratory’s electrostat was something to behold. This enormous bipolar speaker was as big as a door. The diaphragm, which was beginning to rot, was made of a pig intestine that was covered with fine gold leaf to con- duct the audio signal.
  • 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 were inherently more linear than cones, so he built a model using a thin plastic diaphragm treated with a conductive coating.

  • Page 18: Frequently Asked Questions

    4 Ohms and should again double into 2 Ohms. Could you suggest a list of suitable electronics and cables that would be ideal for MartinLogan speakers? The area of electronics and cable choice is probably the most common type of question that we receive. It is also the most subjective.
  • Page 19 A problem has recently developed with my MartinLogan speakers. The right speaker seems to be hissing even when the amplifier and such are not connected. I was wondering if this sounds like any problem you have encountered previously and have a simple solution for or might it be something which will need to be looked into more carefully.

  • Page 20: Troubleshooting

    Troubleshooting No Output • Check that all your system components are turned on. • Check your speaker wires and connections. • Check all interconnecting cables. Weak Output from Electrostatic Panel, Loss of Highs • Check the power cord. Is it properly connected to the speaker and to the wall? •...

  • Page 21: General Information

    Specifications The Cinema i hybrid speaker system consists of a broad- range single element electrostatic transducer integrated with a quick-response woofer. This approach takes advantage of the benefits that both technologies have to offer. Dispersion is a controlled 30 degrees. This was achieved by curving the electrostatic transducer element itself, an elegantly simple solution.

  • 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 elec- trical 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 ©2003 MartinLogan. All rights reserved. Rev. #030303...

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