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MartinLogan Sequel II manual

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Table of contents for the manual

  • Page 1

    The Sequel II Speaker System User's Manual[...]

  • Page 2

    Page 2 Sequel II User's Manual Introduction 3 Installation in Brief 4 The Electrostatic Concept 5 History 6 Martin-Logan Exclusives 8 Operation 1 0 Room Acoustics 1 4 Placement 1 8 Questions 2 1 Troubleshooting 2 2 Recommended Music 2 3 Glossary 2 4 Specifications 2 6 Notes 2 7 Important Contents Your Sequel II speakers are provided with an au[...]

  • Page 3

    Page 3 Sequel II User's Manual Introduction Congratulations, you have invested in one of the world’s premier loudspeaker systems! The Martin-Logan Sequel II represents the culmination of an intensive, dedicated group research program directed toward establishing a world class reference monitor utilizing leading-edge technology, without compr[...]

  • Page 4

    Page 4 Sequel II User's Manual Installation in Brief We know you are eager to hear your new Sequel II 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 informa- tion in this manual. It will give you perspective on how to attain the be[...]

  • Page 5

    Page 5 Sequel II User's Manual The Electrostatic Concept 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, diaphrams and ribbons that are moved with magnetism, the world of electrostatic loud- speake[...]

  • Page 6

    Page 6 Sequel II User's Manual History In the late 1800’s, 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 stylus. In 1898, Sir Oliver Lodge invented [...]

  • Page 7

    Page 7 Sequel II User's Manual 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 that the cone speakers of the period were too nonlinea[...]

  • Page 8

    Page 8 Sequel II User's Manual Martin-Logan Exclusives Full Range Operation Full Range Operation Full Range Operation Full Range Operation Full Range Operation The most significant advantage of Martin-Logan's exclusive transducer technology reveals itself when you look at examples of other loudspeaker products on the market today. The Seq[...]

  • Page 9

    Page 9 Sequel II User's Manual Vapor Deposited Film Vapor Deposited Film Vapor Deposited Film Vapor Deposited Film Vapor Deposited Film The diaphragm material used in all Martin-Logan speakers employs an extremely sophisticated conductive surface that has been vapor deposited on the polymer surface at an atomic level. A proprietary compound is[...]

  • Page 10

    Page 10 Sequel II User's Manual Operation Signal Connection Signal Connection Signal Connection Signal Connection 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[...]

  • Page 11

    Page 11 Sequel II User's Manual Figure 1 Figure 1 Figure 1 Figure 1 Figure 1. Standard Connection. One channel shown. Figure 2. Figure 2. Figure 2. Figure 2. Figure 2. Bi-Wire Connection. One channel shown. Warning! Warning! Warning! Warning! Warning! Turn your amplifier off before making or breaking any signal connections! The chassis is eart[...]

  • Page 12

    Page 12 Sequel II User's Manual Operation Figure 3. Horizontal Passive Bi-amplification. One channel shown. Passive Bi-Amplification Passive Bi-Amplification Passive Bi-Amplification Passive Bi-Amplification Passive Bi-Amplification For those of you that desire ultimate perfor- mance, the Sequel II may be passively bi- amplified using the exis[...]

  • Page 13

    Page 13 Sequel II User's Manual Bass Control Switch Bass Control Switch Bass Control Switch Bass Control Switch Bass Control Switch On the rear panel of the Sequel II electronics module, below the Signal Input Signal Input Signal Input Signal Input Signal Input, is a t wo position Bass Control Bass Control Bass Control Bass Control Bass Contro[...]

  • Page 14

    Page 14 Sequel II User's Manual Y Y Y Y Y our R our R our R our R our R oom oom oom oom oom This is one of those areas that requires both a little background to understand and some time and experi- mentation to attain the best performance from your system. Your room is actually a component and an important part of your system. This component i[...]

  • Page 15

    Page 15 Sequel II User's Manual Rules of Thumb Rules of Thumb Rules of Thumb Rules of Thumb Rules of Thumb Hard vs. Soft Surfaces Hard vs. Soft Surfaces Hard vs. Soft Surfaces Hard vs. Soft Surfaces Hard vs. Soft Surfaces. If the front or back wall of your listening room is soft, it may benefit you to have a hard or reflective wall in oppositi[...]

  • Page 16

    Page 16 Sequel II User's Manual Controlled Horizontal Dispersion Controlled Horizontal Dispersion Controlled Horizontal Dispersion Controlled Horizontal Dispersion Controlled Horizontal Dispersion Your Sequel II's launch a 30 degree dispersion pattern when viewed from above. This horizontal dispersion field gives a choice of good seats fo[...]

  • Page 17

    Page 17 Sequel II User's Manual Three Major T Three Major T Three Major T Three Major T Three Major T ypes of Dispersion ypes of Dispersion ypes of Dispersion ypes of Dispersion ypes of Dispersion In the field of loudspeaker design, it is a known fact that as the sound wave becomes progressively smaller than the transducer producing it, the di[...]

  • Page 18

    Page 18 Sequel II User's Manual Listening P Listening P Listening P Listening P Listening P osition osition osition osition osition By now your speakers should be placed approximately 2 to 3 feet from the front wall (wall in front of the listening position) and at least 1 to 2 feet from the side walls. Your sitting distance should be further t[...]

  • Page 19

    Page 19 Sequel II User's Manual Experimentation Experimentation Experimentation Experimentation Experimentation Toe-in Toe-in Toe-in Toe-in Toe-in. Now you can begin to experiment. First begin by toeing your speakers in towards the listening area and then toeing them straight into the room. You will notice that the tonal balance changes ever s[...]

  • Page 20

    Page 20 Sequel II User's Manual The X The X The X The X The X -tra “ -tra “ -tra “ -tra “ -tra “ T T T T T week” week” week” week” week” A major cable company developed the following procedure for speaker placement. As a final test of exact placement, use these measurements for your speakers placement, and see what can happ[...]

  • Page 21

    Page 21 Sequel II User's Manual Questions What size amplifier should I use with the Sequel What size amplifier should I use with the Sequel What size amplifier should I use with the Sequel What size amplifier should I use with the Sequel What size amplifier should I use with the Sequel II's? II's? II's? II's? II's? We [...]

  • Page 22

    Page 22 Sequel II User's Manual Troubleshooting Poor Imaging Poor Imaging Poor Imaging Poor Imaging Poor Imaging Check placement. Are both speakers the same dis- tance from the walls? Do they have the same amount of toe-in? Try moving the speakers away from the back and side walls. Check the polarity of the speaker wires. Are they con- nected [...]

  • Page 23

    Page 23 Sequel II User's Manual Recommended Music Analog Discs: Analog Discs: Analog Discs: Analog Discs: Analog Discs: Astounding Sound Show ........... Reference Recordings RR-7 Chet Atkins in Hollywood ................................ RCA LSP-1993 Berlioz: Symphonie Fantastique .......... Chesky Records CR1 Big Band Jazz ...................[...]

  • Page 24

    Page 24 Sequel II User's Manual Glossary AC AC AC AC AC. Abbreviation for alternating current. Active crossover Active crossover Active crossover Active crossover Active crossover. Uses active devices (transistors, IC’s, tubes) and some form of power supply to operate. Amplitude Amplitude Amplitude Amplitude Amplitude. The extreme range of a[...]

  • Page 25

    Page 25 Sequel II User's Manual Inductance Inductance Inductance Inductance Inductance. The property of an electric circuit by which a varying current in it produces a varying magnetic field that introduces voltages in the same circuit or in a nearby circuit. It is measured in henrys. Inductor Inductor Inductor Inductor Inductor. A device desi[...]

  • Page 26

    Page 26 Sequel II User's Manual The Sequel II 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 tech- nologies have to offer. Dispersion is a controlled 30 degrees. This was achieved by curving the electrosta[...]

  • Page 27

    Page 27 Sequel II User's Manual Notes[...]

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    $ 3.00 $ 3.00 $ 3.00 $ 3.00 $ 3.00 2001 delaware street p.o. box 707 lawrence, kansas 66044 ph: 913.749.0133 © 1989 martin-logan ltd. martin-logan ltd. martin-logan ltd. martin-logan ltd. martin-logan ltd. all rights reserved THE ELECTROST A TI C TECHNOLOGY[...]