MartinLogan Mosaic User's Manual
Contents
1. and at least one to two feet from the side walls Your sitting distance should be farther than the distance between the speakers themselves What you are trying to attain is the impression of good center imaging and stage width There is no exact distance between speakers and listener but there is a relationship 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 the distance from the listener to the speakers becomes smaller than the distance between the speakers them selves the image will no longer focus in the center Now that you have positioned your speaker system spend some time listening Wait to make any major changes in your initial setup for the next few days as the speaker sys tem itself will change subtly in its sound Over the first 40 hours of play the actual tonal quality will change slightly with deeper bass and more spacious highs resulting Atter a few days of listening you can begin to make refine ments and hear the differences of those refinements The Wall Behind the Listener Near field reflections can occur from your back wall the wall behind the listening position If your listening position is close to the back wall these reflections can cause prob lems and confuse the quality of imaging Actually it is better for the wall behind you to be soft than to be2. bright If you have a hard back wall and your listening position is close to it experiment with devices that will soften and absorb information i e wall hangings and possibly even sound absorbing panels The Wall Behind the Speakers The front surtace the wall behind your speakers should not be extremely hard or soft For instance a pane of glass will cause reflections brightness and confused imaging Curtains drapery and objects such as bookshelves can be placed along the wall to soften a hard surtace A standard 6 Placement sheet rock or textured wall is generally an adequate surface if the rest of the room is not too bright and hard Sometimes walls can be too soft If the entire front wall consists of only heavy drapery your system can sound too soft or dull You may hear dull muted music with little ambi ence Harder room surtaces will actually help in this case The front surface should optimally be one long wall without any doors or openings If you have openings the reflection and bass characteristics from one channel to the other can be different The Side Walls The same requirements exist for side walls Additionally a good rule of thumb is to have the side walls as far away from the speaker sides as possible minimizing near field side wall reflections Sometimes if the system is bright or the imaging is not to your liking and the side walls are very near try putting curtains or softening material direct
3. consist of capacitors inductors and resistors Phase The amount by which one sine wave leads or lags a second wave of the same frequency The difference is described by the term phase angle Sine waves in phase reinforce each other those out of phase cancel Pink noise A random noise used in measurements as it has the same amount of energy in each octave Polarity The condition of being positive or negative with respect to some reference point or object RMS Abbreviation for root mean square The effective value of a given waveform is its RMS value Acoustic power is proportional to the square of the RMS sound pressure Resistance That property of a conductor by which it opposes the flow of electric current resulting in the generation of heat in the conducting material usually expressed in ohms Resistor A device used in a circuit to provide resistance Resonance The effect produced when the natural vibra tion frequency of a body is greatly amplified by reinforcing vibrations at the same or nearly the same frequency from another body 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 distor tion Transducer Any of various devices that transmit energy from one system to anothe
4. has ever complained that the movie was too real The following list and descriptions will give you only a brief outline of the responsibilities and demands placed on each speaker Front Left and Front Right If these speakers will be the same two used for your stereo playback they should be of very high quality and able to play loudly over 102 dB and reproduce bass below 80 Hz Center Channel This is the most important speaker in a video system as almost all of the dialogue and a large portion of the front speaker information is reproduced by the center channel It is important that the center speaker be designed by the same manufacturer as the front speakers and that it is recommended for use as a center speaker This is not the place to cut corners 10 Home Theater Surround Speakers We recommend that the surround speakers play down to 80 Hz or below The surround speakers contain the information that makes it appear that planes are flying over your head Some may suggest that this is the place to save money and purchase a small inexpensive speaker If you choose to do so be prepared to upgrade in the future as discrete six channel digital encoding becomes available and the demands on the surround speakers increase Subwoofer With any good surround system you will need a high quality subwoofer the 1 in a 5 1 channel surround system Most movie soundtracks contain large amounts of bass infor mation as part of the special ef
5. the dynamic woofer they employ In the case of our center channel speakers however they are fully shielded and can go anywhere Will exposure to sunlight affect the life or perfor mance of my speakers 12 We recommend that you not place any loudspeaker in direct sunlight The ultraviolet UV rays from the sun can cause deterioration of grill cloth speaker cones etc Small exposures to UV will not cause a problem In general the filtering of UV rays through glass will greatly reduce the negative effects Frequently Asked Questions and Troubleshooting Troubleshooting Output e Check that all your system components are turned on e Check your speaker wires and connections e Check all interconnecting cables System Frequency Response 46 20 000 Hz 3 dB Sensitivity 90 dB 2 83 volts meter Impedance 5 ohms Crossover Frequency 450 3000 Hz Components Air core coils metal film and low dissipation electrolytic capacitors Woofer Type 8 20 3cm high rigidity aluminum cone with extended throw drive assembly non resonance asymmetrical cham ber format bass reflex Mid Range Driver 1 5 x 6 3 8cm x 15 2cm ATF Transducer High Frequency Driver 1 5 x 2 25 3 8cm x 5 7cm ATF Transducer Power Handling 200 watts rms Weight 30 Ibs each 13 6 kg Size 9 44 W x 11 69 D x 40 H 24cm W x 29 7cm D x 102cm H GENERAL INFORMATION Warranty and Registration Your Mosaic speaker is provid
6. transportation must be born by the owner of the MartinLogan product 3 If after owning your speakers for six months you relocate to a country other than the one in which you purchased your speakers your warranty may be transferable Contact MartinLogan for details General Information 13 GLOSSARY OF AubDIO TERMS 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 mea sured from the average to the extreme Arc The visible sparks generated by an electrical discharge ATF The abbreviation for advanced thin film Bass The lowest frequencies of sound Bi Amplification Uses an electronic crossover or line level passive crossover and separate power amplifiers for the high and low frequency loudspeaker drivers Capacitance That property of a capacitor which determines how much charge can be stored in it for a given potential difference between its terminals measured in farads by the ratio of the charge stored to the potential difference Capacitor A device consisting of two or more conducting plates separated from one another by an insulating material and used for storing an electrical charge Sometimes called a condenser Clipping Distortion of a signal by its being chopped off An overload problem caused by pushing an amplitier beyond its capabilities The flat topp
7. your speakers placement and see what can happen to the ultimate enhancement of your system s performance These two basic formulas will determine opti mum placement of your speakers to minimize standing waves 1 Distance from the front wall the wall in front of the lis tening position to the center of the ATF transducer To determine distance from the front wall measure the height of your ceiling inches and multiply the figure by 0 618 i e ceiling height in inches x 0 618 the distance from the front wall to the center of the ATF transducer 2 Distance from the side walls to the center of the ATF transducer To determine distance from the side walls measure the width of your room inches and divide by 18 Next multiply the quotient by 5 i e room width in inches 18 x 5 the distance from the side walls to the center of the ATF transducer Enjoy Yourself The Mosaic is a very refined speaker and benefits from care in setup With these tips in mind you will find over your months of listening that small changes can result in measurable differences As you live with your speakers do not be afraid to experiment with their positioning until you find the optimal relationship between your room and speaker system that gives to you the best results Your efforts will be rewarded You are now armed with the fundamental knowledge of room acoustics and the specitic fundamentals of the Mosaic loudspeaker Happy listening P
8. MOSAIC user s manual MARTIN LOGAN the loudspeaker technology company CONTENTS Contents cece ee ee ee eee eens Installation in Brief 00 cee eee eee Introduction 2 cece ee eee ee eee ees Operation is ii e el eae ele a eed ee tend Signal Connection Break In Placement 00 0 ecw eee cece ee eeees Listening Position The Wall Behind the Listener The Wall Behind the Speakers The Side Walls Experimentation Final Placement antreieni aha The Extra Tweak Enjoy Yourself 2 Contents Room Acoustics cece ee eee ee eee eee 8 Your Room Terminology Rules of Thumb Dipolar Speakers and Your Room 5 9 Solid Footing Home Theater 22 eee eee eee 10 ATF Advanced Thin Film 11 Frequently Asked Questions and Troubleshooting 12 General Information 22e000 13 Specifications Warranty and Registration Service Glossary of Audio Terms 00005 14 We know you are eager to hear your new Mosaic loud speaker 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 pos sible performance from this most exacting transducer If you should experience any difficulties in the setup or operation of your Mosaic speaker please refer to the Opera
9. and deep tonal registers as well If you cannot attain these virtues read the section on Room Acoustics pages 8 9 This will give you clues on how to get closer to those ideal virtues After obtaining good wall treatments and the proper angle begin to experiment with the distance from the wall behind the speakers Move your speaker slightly forward into the room What happened to the bass response What happened to the imaging If the imaging is more open and spacious and the bass response is tightened that is a superior position Move the speakers back six inches from the initial setup position and again listen to the imaging and bass response There will be a position where you will have pinpoint imaging and good bass response That position is the point of the optimal place ment from the front wall Now experiment with placing the speakers farther apart As the speakers are positioned farther apart listen again not so much for bass response but for stage width and good pinpoint focusing Your ideal listening position and speaker position will be determined by Tightness and extension of bass response e Width of the stage e Pinpoint focusing of imaging Once you have determined the best of all three of these considerations you will have your best speaker location The Extra Tweak A major cable company developed the following procedure for speaker placement As a final test of exact placement use these measurements for
10. ding Clarity Unlike traditional voice coil driven systems ATF diaphragms are directly and uniformly driven throughout their entire surface This full surtace drive system results in ultra fast transient response with no cone break up and the ability to accurately reproduce sound with great delicacy nuance and clarity Dipole Design For A Realistic Open Sound Stage The audio industry has long recognized that late arrival reflective information significantly enhances the ambient nature of sound reproduction This ambient reflective information dramatically contributes to a realistic you are there listening experience MartinLogan s dipole radiation pattern radiating out of phase information from both the front and back ideally interacts with your listening envi ronment to create this realistic sound stage We have contoured Mosaic s radiation pattern to emulate the same dipole characteristics as our world standard setting elec trostatic technology resulting in the same outstanding sound staging and 3 dimensionality ATF Advanced Thin Film 11 FREQUENTLY ASKED QUESTIONS AND TROUBLESHOOTING Frequently Asked Questions How do 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 at the Xtatic shop at www martinlogan com that cleans your speakers better than anything else we have tried Do not spray any kind of cleaning agent on or in c
11. e 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 footing for your speakers See Solid Footing this page for spike information and installation instructions Dipolar Speakers and Your Room The MartinLogan Mosaic loudspeakers are a dipolar radiators This means that they produce sound from both their fronts and their backs Consequently musical information is reflected by the wall behind them and may arrive either in or out of step with the information produced by the front of the speaker The low frequencies can either be enhanced or nulled by he position from the front wall Your Mosaic s have been designed to be placed two to three feet from the front wall the wall in front of the listening position to obtain the best results however your room may see things differently So listening to the difference of the bass response as a result of he changes in distance from the front wall can allow you to get the best combination of depth of bass and tonal balance Now that you know about reflective surfaces and resonant objects you can see how the midrange and high frequencies can be affected The timing of the initial wave as it radiates o your ears and then the reflected information as it arrives at your ears later in time can result in confusion of the precious timing information that carries the clues to imaging Consequently the result is blurred i
12. ecurely when satistied that speaker is level Caution Walking the speaker may result in a broken spike 1 4 x 20 Thread S PT Jam Nut Figure 2 The ETC Spike Room Acoustics 9 Home THEATER It had long been the practice of stereo buffs to connect their television to a stereo system The advantage was the use of the larger speakers and more powerful amplifier of the stereo system Even though the sound was greatly improved it was still mono and limited by the broadcast signal In the late 1970 s and early 1980 s two new home movie formats became widely available to the public VCR and laser disc By 1985 both formats had developed into very high quality audio video sources In fact the sonic performance of some video formats exceeded audio only formats Now with theater quality sound available at home the only element missing was the surround sound presentation found in movie houses Fortunately Dolby and DTS encoded movies which include almost all movies have the same surround sound infor mation encoded on home releases as the theater films All that is required to retrieve this information is a decoder and additional speakers and amps to reproduce it Home theater is a complex purchase and we recommend that you consult your local MartinLogan dealer as they are well versed in this subject Each piece of a surround system can be purchased separately Take your time and buy quality No one
13. ed signal has high levels of harmonic distortion which creates heat in a loudspeaker and is the major cause of loudspeaker component failure CLS The abbreviation for curvilinear linesource Crossover An electrical circuit that divides a full bandwidth signal into the desired frequency bands for the loudspeaker components dB decibel A numerical expression of the relative loudness of a sound The difference in decibels between two sounds is ten times the Base 10 logarithm of the ratio of their power levels 14 Glossary of Audio Terms DC Abbreviation for direct current Diffraction The breaking up of a sound wave caused by some type of mechanical interference such as a cabinet edge grill frame or other similar object Diaphragm A thin flexible membrane or cone that vibrates in response to electrical signals to produce sound waves Distortion Usually referred to in terms of total harmonic distortion THD which is the percentage of unwanted har monics of the drive signal present with the wanted signal Generally used to mean any unwanted change introduced by the device under question Driver See transducer Dynamic Range The range between the quietest and the loudest sounds a device can handle often quoted in dB Efficiency The acoustic power delivered for a given electrical input Often expressed as decibels watt meter dB w m ESL The abbreviation for electrostatic loudspeaker Headroom The difference i
14. ed with an automatic Limited 90 Day Warranty coverage You have the option at no additional charge to receive a Limited 5 Year Warranty coverage To obtain the Limited 5 Year Warranty coverage you need to complete and return the Certificate of Registration included with your speakers and provide a copy of your dealer receipt to MartinLogan within 30 days of purchase For your convenience MartinLogan also offers online warranty registration at www martinlogan com Martinlogan may not honor warranty service claims unless we have a completed Warranty Registration on file If you did not receive a Certificate of Registration with your new Mosaic speaker you cannot be assured of having received new units If this is the case please contact your authorized MartinLogan dealer Service Should you be using your MartinLogan product in a country other than the one in which it was originally purchased we ask that you note the following 1 The appointed MartinLogan distributor for any given country is responsible for warranty servicing only on units distributed by or through it in that country in accordance with its applicable warranty 2 Should a MartinLogan product require servicing in a country other than the one in which it was originally purchased the end user may seek to have repairs per formed by the nearest MartinLogan distributor subject to that distributor s local servicing policies but all cost of repairs parts labor
15. fects Good subwoofers will provide a foundation for the rest of the system Figure 3 Mosaic loudspeakers as front and surround effects channels Fresco loudspeakers as center effects channel Grotto subwoofers as 0 1 effects channel ATF Operation The MartinLogan ATF transducer consists of a micro thin low mass Kaladex diaphragm with an ultra light etched conductive aluminum surface suspended between two high field strength neodymium super magnet arrays see figure 4 When an electrical current music signal passes through the etched aluminum on the diaphragm s surface it is simulta neously pulled towards one of the neodymium arrays and pushed away from the opposing array When the direction of current is reversed the diaphragm is simultaneously pushed and pulled in the opposite direction thus producing sound Extremely Low Mass Diaphragm Blazing Speed and Inner Detail Low mass diaphragms are crucial to a loudspeakers ability to accurately reproduce sound As the mass of a transducers diaphragm decreases its ability to resolve detail increases With extremely low mass characteristics the ATF transducer tracks the audio signal with almost perfect accuracy MartinLogan ATF diaphragms are constructed of extremely low mass Dupont Kaladex PEN polyethylene naphthalate a material chemically similar to the low mass PET poly ethelene terathylate film used in MartinLogan s generation 2 elec
16. lacement Z Room Acoustics Your Room This is one of those areas that requires both a little back ground to understand and some time and experimentation to obtain 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 can dramatically add to or subtract from a great musical experience All sound is composed of waves Each note has its own wave size with the lower bass notes literally encompassing from 10 feet to as much as 40 feet Your room participates in his wave experience like a three dimensional pool with waves reflecting and becoming enhanced depending on he size of the room and the types of surfaces in the room Remember your audio system can literally generate all of he information required to recreate a musical event in ime space and tonal balance The purpose of your room ideally is to not contribute to that information However every room does contribute to the sound and he better speaker manufacturers have designed their sys ems to accommodate this phenomenon Let s talk about a few important terms before we begin Terminology Standing Waves The parallel walls in your room will reinforce certain notes to the point that they will sound louder than the rest of the audio spectrum and cause one note bass boomy bass or tubby bass For instance 100Hz represents a 10 foot wavelength You
17. lose proximity to the ATF element What size amplifier should use We recommend an amplifier with 100 to 200 watts per channel for most applications Probably less would be adequate for our smaller hybrids or when used in home theater where a subwoofer is employed Our hybrid designs will perform well with either a tube or transis torized amplifier and will reveal the sonic character of either type However it is important that the amplifier be stable operating into varying impedance loads a stable amplifier will be able to deliver twice its rated wattage into 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 We have repeatedly found that brands that work well in one setup will drive someone else nuts in another We use many brands with great success Again we have no favorites we use electronics and cables quite interchangeably We would suggest listening to a number of brands and above all else trust your ears Dealers are always the best source for information when purchasing additional audio equipment Is there likely to be any interaction between my speak ers and the television in my Audio Video system We recommend that you keep your speakers at least one foot away from the TV because of
18. ly to the edge of each speaker An ideal side wall however is no side wall at all Experimentation Toe in Now you can begin to experiment First begin by toeing your speakers in towards the listening area and then facing them straight into the room You will notice that the tonal balance changes slightly You will also notice the imaging changing Imaging In their final location the Mosaic 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 The size of the instruments should be neither too large nor too small Additionally you should find good clues as to stage depth Make sure the vertical alignment distance from the front wall and toe in is exactly the same from one speaker to the other This will greatly enhance the quality of your imaging Bass Response Your bass response should neither be one note nor too heavy It should extend to even the deepest organ pas sages yet it should be tight and well defined Kick drums should be tight and percussive string bass notes should be uniform and consistent throughout the entirety of the run without any booming or thudding Tonal Balance Voices should be natural and full cymbals should be detailed and articulate yet not bright and piercing pianos should have a nice transient characteristic
19. maging and excessive brightness Soft walls curtains wall hangings or sound dampeners can be effective if these negative conditions occur your dealer can give you good information here Atter living and experimenting with your Mosaic s you may want to use ETC energy transfer coupler Spikes see figure 2 which are available from your local MartinLogan dealer or from the Xtatic shop at www martiniogan com With the use of these spikes the Mosaic will become more firmly planted on the floor and consequently bass will tighten and imaging will become more coherent and detailed It is best not to implement the spikes however until you are secure in the positioning as the spikes can damage the floor if the speaker is moved MartinLogan ETC spikes will fit any common 1 4 x 20 thread insert that may be found on your other audio equipment racks etc Spike Installation Instructions 1 Carefully lay your speaker on its side to gain access to the bottom 2 Remove existing feet or spikes Thread new spikes into holes and screw them in all of the way If the speaker does not sit level loosen one spike until level is achieved 3 Tighten the jam nut snugly by hand Do not over tight en the nut 4 Right the speaker Caution Make sure your hands and any cabling are clear of the spikes Do not slide speaker as spikes are sharp and can damage your floor or carpet 5 Adjust to level by rotating spikes Tighten the jam nut s
20. n decibels between the peak and RMS levels in program material Hybrid A product created by the marriage of two different technologies Meant here as the combination of a dynam ic woofer with an electrostatic or ATF transducer Hz Hertz Unit of frequency equivalent to the number of cycles per second Imaging To make a representation or imitation of the original sonic event 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 Inductance The property of an electrical 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 A device designed primarily to introduce inductance into an electrical circuit Sometimes called a choke or coil Linearity The extent to which any signal handling process is accomplished without amplitude distortion Midrange The middle frequencies where the ear is the most sensitive NAC The abbreviation for natural ambience compensation Passive crossover Uses no active components transis tors ICs tubes and needs no power supply AC DC battery to operate The crossover in a typical loudspeaker is of the passive variety Passive crossovers
21. on Attach your speaker cables to the signal input section on the rear panel Be consistent when connecting speaker leads to the terminals on the back of the Mosaic Take great care to assign the same color to the terminal on both the speaker and the amplifier Please see the Operation section page 5 for more details Step 4 Listen and Enjoy Now you may turn on your system and enjoy Installation in Brief 3 INTRODUCTION Congratulations You have invested in a new world of home cinema The MartinLogan Mosaic represents the extension of an intensive dedicated group research program directed toward establishing a world class reference monitor utilizing leading edge technology without compromising durability reliability craftsmanship or aesthetic design The advantages of MartinLogan ATF advanced thin film technology will present themselves to you from the moment the movie begins Sounds float around the screen clearly defining the area from where they were created not the area of the speaker that created them 4 Introduction The materials in your new Mosaic speaker are of the high est quality and will provide years of enduring enjoyment and deepening respect Mosaic s state of the art Vojtko crossover is designed and manufactured with the same meticulous attention care and precision as those found in MartinLogan s ultimate loudspeaker products This User s Manual will explain in detail the operati
22. on of your Mosaic speaker and the philosophy applied to their design A clear understanding of your speakers will insure that you obtain maximum performance and pleasure from this most exacting transducer It has been designed and con structed to give you years of trouble free listening enjoyment 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 the longer the length used the greater the necessity of a lower gauge and the lower the gauge the better the sound with dimin ishing returns setting in around 8 to 12 A variety of speaker cables are now available whose manufacturers claim better performance than standard heavy gauge wire We have veritied this in many cases and the improvements available are offen more noticeable than the dif ferences between wires of different gauge The effects of cables may be masked if the equipment is not of the highest quality We also recommend if possible that short runs of speaker cable connect the power amplifier and speaker and that high quality long interconnect cables be used to connect the preamplifier and power amplifier This results in the power amplifiers being close to the speakers which may be practically or cosmetically difficult but if the length of the speaker cables can be reduced to a few meters s
23. onic advantages may be obtained Connections are done at the signal input section on the rear electronics panel of the Mosaic see figure 1 Use spade connectors for optimum contact Make certain that all of your connections are tight Be consistent when connecting speaker leads to the terminals on the back of the Mosaic Take great care to assign the same color to the terminal on both the speaker and the amplifier WARNING Turn your amplifier off before mak ing or breaking any signal connections Break In When you first begin to play your Mosaic speaker it will sound a bit bass shy This is due to the high quality long life components used in our woofer Our custom made woofers require at least 30 hours of break in at 90 dB moderate listening levels before any critical listening The break in requirements of the crossover components and to a lesser degree the ATF transducer are equal OPERATION Amplifier Signal Output 2003 MartinLogan Ltd All Rights Reserved Lawrence Kansas USA w martinlogan com MARTIN LOGAN M OSAIC Hybrid Advanced Thin Film Loudspeaker System 200 watts 5 ohms WARNING AN GAA AVIS RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR Figure 1 Single wire connection One channel shown Operation 5 PLACEMENT Listening Position By now your speakers should be placed approximately two to three feet from the front wall the wall in front of the listening position
24. r sometimes one that converts the energy in form Loudspeaker transducers convert elec trical energy into mechanical motion Transient Applies to that which lasts or stays but a short time A change from one steady state condition to another Tweeter A small drive unit designed to reproduce only high frequencies Wavelength The distance measured in the direction of progression of a wave from any given point characterized by the same phase White noise A random noise used in measurements as it has the same amount of energy at each frequency Woofer A drive unit operating in the bass frequencies only Drive units in two way systems are not true woofers but are more accurately described as being mid bass drivers Glossary of Audio Terms 15 MARTIN LOGAN the loudspeaker technology company 2101 Delaware Street Lawrence Kansas 66046 USA tel 785 749 0133 fax 785 749 5320 www martinlogan com 2003 MartinLogan All rights reserved Rev 052103
25. r room will reinforce that specific frequency if one of the dominant dimensions is 10 feet Large objects in the room such as cabinetry or furniture can help to min imize this potential problem Some serious audiophiles will literally build a special room with no parallel walls just to help eliminate this phenomenon Reflective Surfaces near field reflections The hard surtaces of your room particularly if close to your speaker system will reflect some waves back into the room over and over again contusing the clarity and imaging of your system The smaller sound waves are mostly affected here and occur in the mid and high frequencies This is where voice and frequencies as high as the cymbals occur 8 Room Acoustics Resonant Surfaces and Objects All of the surfaces and objects in your room are subject to the frequencies generated by your system Much like an instrument they will vibrate and carry on in syncopation with the music and contribute in a negative way to the music Ringing boominess and even brightness can occur simply because they are singing along with your music Resonant Cavities Small alcoves or closet type areas in your room can be chambers that create their own standing waves and can drum their own one note sounds Clap your hands Can you hear an instant echo respond back You have near field reflections Stomp your foot on the floor Can you hear a boom You have standing wa
26. tion or Placement sections of this manual Should you encounter a persistent problem that cannot be resolved please contact your authorized MartinLogan dealer They will provide you with the appropriate technical analysis to alleviate the situation WARNING e Refer servicing to a qualified technician e To prevent fire or shock hazard do not expose this module to moisture e Turn amplifier off should any abnormal conditions occur e Do not drive speaker beyond its rated power The lightning bolt flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient mag nitude to constitute a risk of electric shock The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance servicing instructions in the literature accompanying the appliance INSTALLATION IN BRIEF Step 1 Unpacking Remove your new Mosaic speaker trom the packing Step 2 Placement Place the Mosaic near the desired location Please see the Placement section page 6 7 for more details Step 3 Signal Connection Use the best speaker cables you can Higher quality cables available from your specialty dealer are recommended and will give you superior performance Spade connectors are suggested for optimum contact and ease of installati
27. trostatic transducers yet capable of handling the high thermal requirements required for stable magnetic thin film operation Aluminum Etched Kaladex Diaphragm Rigid Steel Neodymium Housing Super Magnets Figure 4 Cut away view of an ATF transducer Note the simplicity due o minimal parts usage ATF ApvVANCED THIN FiLM High Field Strength Superb Control and Efficiency With a field strength almost 2000 more powerful than traditional systems Neodymium iron boron NIB rare earth super magnets are one of the world s strongest commercially available magnetic materials This incredible field strength proves ideal for maintaining perfect control over the low mass Kaladex diaphragm Super low distortion levels high resolution and crystal clear transparency are just a few of the benefits resulting from this superb combi nation of low mass diaphragm and high field strength Push Pull Operation Ideal Linearity Linearity is another factor contributing to a loudspeaker s ability to achieve ultimate clarity detail and resolution By positioning neodymium magnet arrays in a push pull con figuration MartinLogan ATF transducer technology maintains uniform diaphragm control regardless of position as it traverses the entire audio signal The push pull concept is a major contributor to the linearity and sonic superiority of ATF transducers Direct Full Surface Drive Provides Outstan
28. ves or large panel resonances such as a poorly supported wall Put your head in a small cavity area and talk loudly Can you hear a booming You ve just experienced a cavity resonance Rules of Thumb Hard vs Soft Surfaces If the front or back wall of your listening room is soft it might benefit you to have a hard or reflective wall in opposition The ceiling and floor should follow the same basic guideline as well However the side walls should be roughly the same in order to deliver a focused image This rule suggests that a little reflection is good As a mat ter of fact some rooms can be so over damped with carpeting drapes and sound absorbers that the music sys tem can sound dull and lifeless On the other hand rooms can be so hard that the system can sound like a gymnasium with too much reflection and brightness The point is that balance is the optimum environment Breakup Objects Objects with complex shapes such as bookshelves cabi netry and multiple shaped walls can help break up those sonic gremlins and diffuse any dominant frequencies Solid Coupling Your loudspeaker system generates frequency vibrations or waves into the room This is how it creates sound These vibrations vary from 20 per second to 20 000 per second If your speaker system is not securely planted 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 th
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