MartinLogan Fresco User's Manual
Contents
1. Horizontal Down Rotation Figure 6 Fresco s bracket assembly configured for left down rotation Changing the Direction of Rotation Figure 7 Changing the direction of rotation step 2 Mounting the Fresco On A Wall or Ceiling 7 Installing the Bracket Assembly Required hardware included 6 M4 screws Required tools included 2 5mm Allen tool 8 Prepare a flat surtace with padding and sheets to pro tect the speaker as you work on it Remove the Fresco s grill cloth and caretully place the Fresco face down on the work surface using books or pieces of cardboard to keep the speaker from rocking Using a 6mm Allen tool loosen the 2 cap nuts see fig ure 12 Rotate the wall bracket away trom the cabinet bracket see figure 13 Align the 6 holes in the Fresco s wall mounting bracket with the holes on the back of the Fresco s cabinet Please note that the wall bracket should lie flat against the Fresco cabinet with the hinges along the flot straight edge of the cabinet see figure 14 Using a 2 5MM Allen tool install the 6 screw that attach the cabinet bracket and firmly tighten them see figure 15 Mounting the Fresco On A Wall or Ceiling Figure 12 Installing the bracket assembly on the Fresco cabinet step 2 Required hardware included 5 wall anchors 5 1 Phillips head wood screws2. 8 25 21 Required tools included d a 6mm Allen tool o Required tools not included j a Level E Electric drill and 1 4 and 1 8 drill bits Phillips screwdriver 24 61cm aie Wall Bracket Genter Point 1 Hold the Fresco at the desired location Examine the mount ing location to assure that the wall is free of obstructions Test the direction of rotation to assure that the speaker can rotate toward your listening position It the speaker rotates away from your listening position please refer to Which Direction Should It Rotate page 5 and Changing the Direction of Rotation page 7 2 NOTE These instructions describe the position of the wall bracket with the Fresco mounted flush against a wall not rotated on its bracket NOTE The center point of the wall bracket is not the same as the center of the Fresco These directions describe the location of the center of the wall bracket which you will need to know in order to mount the speaker at your desired location Determine where the center point of the wall bracket should be marked see figures 16 and 17 Will the Fresco remain flat against the wall If so it can be installed tlush against an object such as a plasma screen see figure 1 8 Will the Fresco be rotated to point towards the listening position f so you need to leave space between the nearest object to allow clearance for the speaker to pivot see figure 18 At least 6
3. 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 The MartinLogan Fresco loudspeaker is fully shielded and can go anywhere Will exposure to sunlight affect the life or perfor mance of my speakers l6 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 ot UV rays through glass will greatly reduce the negative effects Frequently Asked Questions and Troubleshooting 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 75 20 000 Hz 3 dB Sensitivity 90 dB 2 83 volts meter Impedance 5 ohms Crossover Frequency 500 3200 Hz Components Air core coils metal tilm and low dissipation electrolytic capacitors Woofer Type Two 4 10 2cm magnetically sh
4. sound waves Distortion Usually reterred 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 Otten expressed as decibels watt meter dB w m ESL The abbreviation for electrostatic loudspeaker Headroom The difference in 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 wooter 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 oftered 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
5. 75 17 2cm of clearance will allow the Fresco to pivot within its full range of motion Less space is needed if the Fresco does not need to fully rotate As recommended ablove before drilling any holes hold the Fresco at its desired location and rotate it into place to assure you have adequate clearance A Mark Center Point __ gt e v Figure 19 Attaching the Fresco to a wall or ceiling step 3 Figure 20 Attaching the Fresco to a wall or ceiling step 4 NOTE Figures 19 24 illustrate the Fresco mounted in 4 4 Using a level square the wall bracket and hold it flush different configurations against the wall with the wall bracket s center hole over the point you just marked The cylindrical hinges on the 3 Mark your wall with the center point for the wall bracket wall bracket should point away from the wall and the see figure 19 flat plane of the wall bracket should be flush against the wall Mark 4 points inside of the wall brackets arc shaped cut outs located at either end of the wall bracket see figure 20 10 Mounting the Fresco On A Wall or Ceiling rA a 7 J i H 7 1 e e vy a Ya N SA Liv Sa ee MLT S Sa Wi e M g s y TSIS 72e 2 gt Pilot holes and o __ 77 Ad YG Pe o dA 4 SS 4 N e AN x l S S LLAS A y LIAS S N LIAS S N rlian A PAIVA AS rolyyy por yyy 1 y PA 7 1 4 e an e 4 Set the wall bracket aside Usi
6. FRESCO User s manual MARTIN LOGAN the loudspeaker technology company CONTENTS amp INTRODUCTION Contents Contents amp Introduction c0ee008 2 Contents Introduction Installation in Brief 0c c ce eee 3 Operation 6 oie c 650554554 6460565555454 68545 4 Signal Connection On Wall Off Wall Switch Break In Mounting the Fresco On A Wall or Ceiling 5 Which Way Should It Rotate Preparing For Vertical Installation 6 Preparing For Horizontal Installation Changing the Direction of Rotation 7 Installing the Bracket Assembly 8 Installing the Fresco 2 2 ee ee 9 Home Theater 0002205600 c206ceee0e oe 24s 13 ATF Advanced Thin Film 14 Frequently Asked Questions and Troubleshooting 16 General Information 0ee000 17 Specitications Warranty and Registration Service Glossary of Audio Terms 22008 18 2 Contents amp Introduction Congratulations You have invested in a new world of home cinema The MartinLogan Fresco represents the culmination of an intensive dedicated group research program directed toward establishing a world class reference monitor utilizing leading edge technology without compromising durability reliability crattsmanship or aesthetic design The advantages of MartinLogan ATF advanced thin film technology will present themselves to you trom the moment th
7. ce Kansas 66046 USA tel 785 749 0133 fax 785 749 5320 www martinlogan com 2003 MartinLogan All rights reserved Rev 052803
8. e movie begins The box effect a phenomenon similar to cupping your hand around your mouth when speaking produced by dynamic midrange drivers is absent and the natural openness of the human voice comes through Sounds float around the screen clearly detining the area trom where they were created not the area of the speaker that created them The materials in your new Fresco speaker are of the highest quality and will provide years of enduring enjoyment and deepening respect The cabinetry is constructed from the highest quality HIPP high impact polypropylene to create an acoustically inert high density enclosure This User s Manual will explain in detail the operation of your Fresco speaker and the philosophy applied to their design A clear understanding of your speakers will insure that you obtain maximum performance and pleasure trom this most exacting transducer It has been designed and con structed to give you years of trouble tree listening enjoyment We know you are eager to hear your new Fresco 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 Fresco speaker please refer to the Operation or Mountin
9. ed 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 trom 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 distortion Transducer Any of various devices that transmit energy from one system to another 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 trequencies 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 wooters but are more accurately described as being mid bass drivers Glossary of Audio Terms 19 MARTIN LOGAN the loudspeaker technology company 2101 Delaware Street Lawren
10. g 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 Fresco speaker trom the packing Step 2 Placement Place the Fresco near the desired location Please see the Mounting the Fresco On a Wall or Ceiling section page 5 12 tor more placement details Step 3 Signal Connection Use the best soeaker cables you can Higher quality cables available trom your specialty dealer are recommended and will give you superior performance Spade connectors are suggested for opt
11. gnal Output ome AN T a 150 watts lt i gt 6ohms Off Wall F RESCO 2 io gt je zZ 2 E 2 E MARTIN LOGAN eZ The Loudspeaker ex Technology ee Ey CS Ved Lawrenc i Figure 1 Single wire connection One channel shown MOUNTING THE Fresco On A WALL or CEILING Figure 2 The parts of the Fresco bracket assembly NOTE MartinLogan recommends using 5 wall anchors to secure each Fresco to a wall During the installation if any of the screw wall anchor positions are over a stud it is recommended to screw directly into the stud NOTE To assure that your Fresco is sately wall mounted these instructions must be carefully followed Study them thoroughly before installing your Fresco s NOTE The following instructions assume the mounting surface is of standard wood frame and standard sheet rock construction If you wish to mount the Fresco to another type of material you should consult a bonded contractor WARNING Installing the Fresco on a wall requires A N only 1 person but an assistant will be helpful The bracket assembly shipped with the Fresco loudspeaker is designed for use only with the Fresco Use with other appliances may result in instability causing possible injury To prevent injury this apparatus must be securely attached to the wall in accordance with the installation instructions Which Way Should It Rotate The bracket assembly supplied wit
12. h the Fresco allows the speaker to mount flat against a wall and pivot up to 90 Depending on the installation locations the Fresco on wall bracket will need to be moditied to allow either right up or lett down rotation see figure 3 and 4 The configuration of Fresco s bracket assembly is identical tor right and up rotation and is identical tor left and down rotation Rotation Left Rotation Right Rotation Left Rotation Rotation Down Rotation Rotation Right Rotation Left Rotation Right Rotation Rotation Down Rotation Up Rotation Figure 4 Horizontal Installation Rotation direction for various installation locations Mounting the Fresco On A Wall or Ceiling 5 INSTALLATION Preparing For Vertical Installation NOTE Fresco s bracket assembly consists of two main parts the wall bracket attaches to the wall and the cabinet bracket attaches to the Fresco When correctly configured the wall and cabinet brackets should each have one pin installed the wall bracket with an upward pointing pin in the upper hinge and the cabinet bracket with a downward pointing pin in the lower hinge see figures 5 and 6 NOTE When correctly installed in a vertical orientation the Fresco s cabinet bracket installed on the cabinet should slide down onto the wall bracket installed on the wall Each Fresco should be installed so that it can rotate to point towards your listening position see tig
13. 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 ditference between its terminals measured in tarads 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 amplifier beyond its capabilities The flat topped 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 trequency 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 18 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
14. ielded high rigidity alu minum cone with extended throw drive assembly non resonance asymmetrical chamber format bass retlex ATF Mid Range Driver 1 5 x 6 3 8cm x 15 2cm ATF Transducer ATF High Frequency Driver 1 5 x 2 25 3 8cm x 5 7cm ATF Transducer Power Handling 150 watts rms Weight 16 lbs each 7 3 kg Size Without Stand 24 inches W x 4 9375 inches D x 8 25 inches H 61cm W x 12 54cm D x 21 6cm H Size With Stand 24 inches W x 5 6875 inches D x 8 25 inches H 61cm W x 14 45cm D x 21 6cm H GENERAL INFORMATION Warranty and Registration Your Fresco speaker is provided 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 martiniogan com MartinLogan may not honor warranty service claims unless we have a completed Warranty Registration on tile If you did not receive a Certificate of Registration with your new Fresco 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 MartinLoga
15. imum contact and ease of installation 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 Fresco Take great care to assign the same color to the terminal on both the speaker and the amplitier Please see the Operation sec tion page 4 for more details Step 4 Listen and Enjoy Now you may turn on your system and enjoy Installation in Brief 3 OPERATION 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 diminishing 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 often more noticeable than the differences between wires of different gauge The effects of cables may be masked if the equipment is not of the high est quality We also recommend if possible that short runs of speaker cable connect the power amplitier and speaker and that high quality long interconnect cables be used to connect the preamplitier and power amplitier This res
16. llion by removing the grill cloth cover gently pressing the medallion from behind and turning it to the correct orientation see figure 25 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 powertul amplitier 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 has ever complained that the movie was too real The following list and descriptio
17. ments required for stable magnetic thin film operation High Field Strength Superb Control and Efficiency With a tield strength almost 2000 more powertul than traditional systems Neodymium iron boron NIB rare earth super magnets are one of the world s strongest commer cially available magnetic materials This incredible field strength proves ideal for maintaining pertect 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 trom this superb combination 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 Outstanding Clarity Unlike traditional voice coil driven systems ATF diaphragms are directly and uniformly driven throughout their entire a surface This full surtace drive system results in ultra fast Rigid Giza Neodymium Aluminum Fiched transient response with no cone break up and the ability Housing S
18. n 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 tor 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 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 17 GLOSSARY OF AuDIO 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 trequencies of sound Bi Amplification Uses an electronic crossover or line level passive crossover and separate power amplifiers for the
19. 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 trequencies 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 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 ditterence is described by the term phase angle Sine waves in phase reintorce 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 wavetorm 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 us
20. ng a 1 8 bit drill a pilot hole at all tive points marked in the previous steps If a pilot hole hits a stud during this step DO NOT WIDEN that pilot hole or install a wall anchor at that location If a pilot hole does not hit a stud use a 1 4 bit to widen that pilot hole and using a Phillips screwdriver install a wall anchor so that it is flush with the wall see figure 21 Mount the wall bracket to the center wall anchor or pilot hole using a 1 Phillips head screw driven through the wall brackets center point Do not tully tighten the screw the bracket must be leveled before installing the remaining screws see figure 22 Using a level square the bracket and drive the four remaining 1 Phillips head screws into the wall anchors or pilot holes Do not fully tighten the screws see fig ure 22 Using a level make sure the bracket is level and tighten all five screws see tigure 22 Mounting the Fresco On A Wall or Ceiling 11 ots 9 Place the Fresco onto the wall bracket and carefully slide the Fresco into place see figure 23 10 Using a 6mm Allen tool attach a washer and cap nut onto each pin Do not fully tighten the cap nuts see figure 23 11 Make the signal connections trom the amplitier see Operation pages 4 12 Mounting the Fresco On A Wall or Ceiling 12 Rotate the Fresco to point at the listening position and tighten the cap nuts see figure 24 13 Rotate the Fresco s logo meda
21. ns will give you only a brief outline of the responsibilities and demands placed on each speaker Front Left and Front Right It 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 tront speaker information is reproduced by the center channel It is important that the center speaker be designed by the same manutacturer as the front speakers and that it is recommended for use as a center speaker This is not the 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 effects Good subwoofers will provide a foundation for the rest of the system Figure 26 Fresco louds
22. peakers as front center and surround effects channels Grotto subwoofers as 0 1 effects channel place to cut corners Home Theater 13 ATF ADVANCED THIN FILM 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 27 When an electrical current music signal passes through the etched aluminum on the diaphragm s surtace it is simulta neously pulled towards one of the neodymium arrays and pushed away trom 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 transducer s diaphragm decreases its ability to resolve detail increases With extremely low mass characteristics the ATF transducer tracks the audio signal with almost perfect accuracy 14 ATF Advanced Thin Film 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 electrostatic transducers yet capable of handling the high thermal require
23. ults 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 sonic advantages may be obtained Connections are done at the signal input section on the rear electronics panel of the Fresco 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 Fresco Take great care to assign the same color to the terminal on both the speaker and the amplitier WARNING Turn your amplifier off before mak ing or breaking any signal connections 4 Operation On Wall Off Wall Switch Fresco features a unique on wall off wall switch that tailors Fresco s acoustic equalization to either installation option Simply set this switch to On Wall if the Fresco is mounted to a wall or ceiling Set the switch to Off Wall if the Fresco is more than four inches trom a wall see figure 1 Break In When you first begin to play your Fresco speaker it will sound a bit bass shy This is due to the high quality long lite 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 AMPLIFIER Si
24. uper Magnets Kaladex Diaphragm to accurately reproduce sound with great delicacy nuance and clarity Figure 27 Cut away view of an ATF transducer Note the simplicity due to minimal parts usage ATF Advanced Thin Film 15 Frequently Asked Questions How do clean my speakers Just use a dust tree 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 close proximity to the ATF element What size amplifier should use We recommend an amplitier with 100 watts per channel for most applications Probably less would be adequate when used in home theater where a subwoofer is employed Our hybrid designs will perform well with either a tube or transistorized amplitier and will reveal the sonic character of either type However it is impor tant that the amplitier 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 tound that brands that work well in one
25. ure 3 Hold each Fresco near it s desired location and try pivoting it to assure that each speaker is correctly contigured Preparing for Horizontal Installation NOTE Fresco s bracket assembly consists of two main parts the wall bracket attaches to the wall and the cabinet bracket attaches to the Fresco When correctly contigured each bracket should have one pin installed the wall bracket with a pin installed in the lett hinge pointing to the lett and the cabinet bracket with a pin installed in the right hinge pointing to the right see figures 5 and 6 NOTE When the Fresco is correcty installed in a horizontal orientation gravity will pull on the speaker trying to rotate down The Fresco bracket assembly is designed in such a way that the force of gravity will tighten the left cap nut and prevent the speaker trom rotating Each Fresco should be installed so that it can rotate to point towards your listening position see tigure 4 Hold each Fresco near it s desired location and try pivoting it to assure that each speaker is correctly contigured 6 Mounting the Fresco On A Wall or Ceiling Vertical Right Rotation Horizontal Up Rotation Figure 5 Fresco s bracket assembly configured for right up rotation Vertical Lett Rotation
Download Pdf Manuals
Related Search