Page 1: ...lfl figlrrE B I A M P L I F I E D R E F E R E N C E M O N I T O R ReTeREilCE MnuuAL 1Qt eelg...
Page 2: ...ilI RHITI B I A M P L I F I E D R E F E R E N C E M O N I T O R R r nEIuCE Mnuunr 1998...
Page 3: ...owledge about monitors should use the table of contents to reference specific functions Chapter 1 About the Ml Active Engineering specifications and reasons why nearfield monitors have become so popul...
Page 4: ...ConbntsAtafety Warrrlng ffiI ACITUE REFTEICE IUIANT AL...
Page 5: ...er s instructions Do not install near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat Do not defeat the safety purpose of the polariz...
Page 6: ...aring lossor ringing in the ears you should consult an audiologist A A lnstructions de S6cufit6 Importantes Symboles utllis5s dans ce produit CesymbolealErteLutilisateur qu il existedesinstructions de...
Page 7: ...ablede produite desniveaux sonorespouvant engendrerune perte permanentede l ouie Ne I urilisez paspendant longtemps i un niveau sonore 6lev6ou i un niveau non confortable Si vous remarquezune perte de...
Page 8: ...lte wdhrend desBehiebesdie Zufuhr von KtiNluft stetsgewiihrleitstet sein Arbeiten Sienie bei geschlossenem Rack BeimehrerenRa geriten sollten diesemit einem geringen abstandvoneinander eingebautwerden...
Page 9: ...may causeinterferenceto radio communications Operation of this equipment in a residential areais likely to causeinterferencein which casethe user will be required to correctthe interferenceat his own...
Page 10: ...Conbrtr Safety Warrrlnga DECLARATIOIT OF COIUFORTIITY Approwals pending seeenclosedsheetif product was authorized for shipment to theEU ffiI ACITUE Rffi TATI AL...
Page 11: ...contain the following items This instruction manual o M1 Actives with the sameserialnumbers asshown on the shipping cartons Two AC power cords NEMA to CEEtype o Alesiswarranty card Twopiecesofadhesive...
Page 12: ...se high wattage amplifiers small enough to fit inside the speaker cabinet with very little weight or size gain Sincethe Ml Actives are self powered DO NOTconnect them to the speakeroutput of another a...
Page 13: ...rst case leakage Shielding of both the woofer and the tweeter is accomplished by the use of a second opposing field oriented bucking magnet The tweeter has an additional sixteen gauge steel cup encasi...
Page 14: ...ieep the amplifier s supply rails ascloseto DC aspossible For traditional supplies bigger is better Brt by using Pulsewidth Modulation PWM and output voltage feedbackin the M1 Active we havethe equiva...
Page 15: ...Active with the cabinet placed vertically the tweeter response at one meter stays essentially symmetrical on either side of the cabinet s centerline This is because the angle subtended between the cab...
Page 16: ...t limits of smaller project and homeitudios which were growing in numbers A new way of accuratemonitoring was needed nearfield monitoring Nearfield monitors by their definition areintended for mountin...
Page 17: ...ight or heavy on the bottom try moving them around within your listening rff m You should avoid locating your M1 Actives near reflective surfaces such as glass tile large open walls or table tops Stil...
Page 18: ...ical spacing between the speakers Alesis recommends that the distance between the speakers for stereo applications equal the distance between the Iistener and either speaker In other words the listene...
Page 19: ...lacement of an instrument or singer As stereo mixing techniques changed toward placing the vocalist for exarnple in the center the old tweeters out orientation would indeed widen the image f one s hea...
Page 20: ...nment of drivers and ports This will be conducive to abalancedmix SeeFigure 2below Proper tweeter orimtation is toward the stereoimagecenter the middle asshown Ports arealways facedtoward the bottom s...
Page 21: ...acementof anearfield monitor relating mostly to room interaction effects Vertical placementallows the Ml Actives to portray your mix with the widest and deepestsoundstagepossible somany people in the...
Page 22: ...creaseroom effects sothere areminimum recommmded setupdistancesfrom side and back walls the speakersshould be a minimumof2 5feeffrom the side walls and3feet ftom the rear walls Seethe illustration on...
Page 23: ...blmd of the two systems is critical if low bass accuracy is to be maintained Here again your ear is your most important piece of test equipment If the subwoofer such as the Alesis Point one or preamp...
Page 24: ...N ORCUTOFFTHEGROUNDING PRONG ON THEPOWERCORD Propergrounding is essentaal for user safety and low noise Il you experience60 cyclehum in your sound systema5a result of different ground potentials betwe...
Page 25: ...dBV line level sources Most synthesizers drurn rrachines effect devices cassette decks and CD players operate at this level Their average signal level is about 1 3 of a volt They have a 2 conductor o...
Page 26: ...the worst placeto makeup gain lost earlier in the system Tosetthelewl with amixer 1 Tum on all systemcomponents the M1 Actives last and tum the Ml Active s INPUT LEVEL control all the way down 2 PIayp...
Page 27: ...level SPL of 85 decibels at 1 meter which is a good working level for mixing At maximum output before clipping they can generate peak levels 118 dB SPL at one meter a level which may cause hearing lb...
Page 28: ...eft rear and right rear channelsfirst became available to consumerson laserdiscand more recently on DVD Digital versatile Disc With somany listenershearing music through their multimedia systems it is...
Page 29: ...cement of the center lUll Actine speaker in the studio Theleft centerand right speakersshould allbe placedin an arcsothat the distance of all drivers to the listener is identical seepage29 The equilat...
Page 30: ...t the following representsa good starting point which you arefree to changeto your taste Vertically the Ml Actives should beplaced on the sidewall of the control room aboveyour head with the woofers o...
Page 31: ...vice into the wall stud then attach the M1 Actives to the rnount allowing room for the rear panel input and AC connections The Ml Activesweigh 19 5lbs so it isvitally important that any stand they re...
Page 32: ...ies initially r D iscreteDolby Digital DTSand Sony sSDD6aremost commonly mixed for theatrical releaseusing surrotmd not monopolar direct monitois r Among the recording engineerswho have recordedaudio...
Page 33: ...ing the saxin the left rear only and a flute in the right rear r If you know that your mix will always be played back on a monopolar sunound system r If the control room is completely damped with soun...
Page 34: ...HE POWENAViILIFIEN OO not attempt to cleanthe cabinetwith abrush which may damagethe surface or a sponge which may leavesmall crumbs in the texture Do not attempt to cleaneither of the drivers The ML...
Page 35: ...sary you will be given a refurn order RO number and instructions on how to return the unit All units mustbe shipped prepaid and COD shipments will not be accepted For prompt service indicate the ROnum...
Page 36: ...lies only to products sold to usersin the USA and Canada Customers outside of the USA and Canadaarenot coveredby this Limited Warrantv and mav or may not becoveredby an independent distributor warrant...
Page 37: ...e alsoassuresmooth off axis r esponse Ul approved fibergLass acousticaldarnping material damps intemal mid frequency reflectionsfrom rear of woofer conebefore entering port lesseningM distortion Trans...
Page 38: ...h Frequenty Arnpllfler RatedPowerOutpu 25watts 4O load Distortion 0 06 THD rated power Slewrate 9Y ltss Signal to Noise ratio 1 12dB ratedoutput Acoustic Section Free FieldFrequencyResponse LZdB SOHzt...
Page 39: ...rence T LINE IN 23 Magnetic shieldng 1 7 36 mounting L7 nearfield 14 nolse 22 placemmt 1 5 horizontal L8 suround 28 vertical 19 Playbackdreck mode 20 Polarity 23 porb 13 plugging 2l power supply 12 re...
Page 40: ...s arising during normal use that arc due to defects in material or workmanship in the product ANY IMPLIEDWARRANTIES INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY AND FTINESS FOR A PARTTCULAR PIJRPOS...
