Unplug the monitor during lightning storms or extended periods
of non-use.
Refer servicing to qualified personnel if the monitor is
damaged or exposed to moisture.

Power Usage:

Connect the power cord to a suitable power outlet as per the
manufacturer’s instructions. Ensure the power switch is in the ON
position to activate the monitor.

Audio Settings:

Adjust the volume and other audio settings using the control
panel on the monitor. Experiment with different settings to achieve
the desired sound output.

Placement:

Position the studio monitor on a stable surface away from
potential hazards. Ensure there is ample space around the monitor
for proper ventilation.

Maintenance:

Regularly clean the monitor with a dry cloth to prevent dust
buildup. Avoid using harsh chemicals that may damage the
finish.

Frequently Asked Questions (FAQ)

Q: Can I use these studio monitors for outdoor events?

A: It is not recommended to use these studio monitors for
outdoor events due to their design and sensitivity to environmental
factors.

Q: How can I troubleshoot if the monitor is not powering
on?

A: Check the power outlet, ensure the power cord is securely
connected, and verify that the power switch is in the ON position.
If issues persist, contact customer support for further
assistance.

View Fullscreen

HR824 MK2
High Resolution Active Studio Monitor
OWNER’S MANUAL
Downloaded from thelostmanual.org

HR824 MK2

IMPORTANT SAFETY INSTRUCTIONS

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with dry cloth. Use a non-scratch cloth to protect the finish.

7. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.

8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.

9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding-type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.

10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the
apparatus.

11. Only use attachments/accessories specified by the manufacturer.

12. Use only with a cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over.

PORTABLE CART WARNING

CAUTION AVIS
RISK OF ELECTRIC SHOCK. DO NOT OPEN RISQUE DE CHOC ELECTRIQUE. NE PAS OUVRIR
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER (OR BACK) NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL
ATTENTION: POUR EVITER LES RISQUES DE CHOC ELECTRIQUE, NE PAS ENLEVER LE COUVERCLE. AUCUN ENTRETIEN DE PIECES INTERIEURES PAR L’USAGER. CONFIER L’ENTRETIEN AU PERSONNEL QUALIFIE.
AVIS: POUR EVITER LES RISQUES D’INCENDIE OU D’ELECTROCUTION, N’EXPOSEZ PAS CET ARTICLE A LA PLUIE OU A L’HUMIDITE
The lightning 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 magnitude to constitute a risk of electric shock to persons. Le symbole éclair avec point de flèche à l’intérieur d’un triangle équilatéral est utilisé pour alerter l’utilisateur de la présence à l’intérieur du coffret de “voltage dangereux” non isolé d’ampleur suffisante pour constituer un risque d’éléctrocution.
The exclamation point within an equilateral triangle is intended to alert the user of the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance. Le point d’exclamation à l’intérieur d’un triangle équilatéral est employé pour alerter les utilisateurs de la présence d’instructions importantes pour le fonctionnement et l’entretien (service) dans le livret d’instruction accompagnant l’appareil.

13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as powersupply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
15. This apparatus shall not be exposed to dripping or splashing, and no object filled with liquids, such as vases, shall be placed on the apparatus.
16. Note that this apparatus is not completely disconnected from the AC mains service when the power switch is in the OFF position.
17. The MAINS plug or an appliance coupler is used as the disconnect device, so the disconnect device shall remain readily operable.
18. Exposure to extremely high noise levels may cause permanent hearing loss. Individuals vary considerably in susceptibility to noise-induced hearing loss, but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a period of time. The U.S. Government’s Occupational Safety and Health Administration (OSHA) has specified the permissible noise level exposures shown in the following chart.
According to OSHA, any exposure in excess of these permissible limits could result in some hearing loss. To ensure against potentially dangerous exposure to high sound pressure levels, it is recommended that all persons exposed to equipment capable of producing high sound pressure levels use hearing protectors while the equipment is in operation. Ear plugs or protectors in the ear canals or over the ears must be worn when operating the equipment in order to prevent permanent hearing loss if exposure is in excess of the limits set forth here.

Duration, per day in hours 8 6 4 3 2 1.5 1

Sound Level dBA, Slow Response 90 92 95 97 100 102 105

0.5

110

0.25 or less 115

Typical Example
Duo in small club Subway Train Very loud classical music Matt screaming at Troy about deadlines Loudest parts at a rock concert

WARNING — To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture.

Laite on liitettävä suojakoskettimilla varustettuun pistorasiaan. Apparatet må tilkoples jordet stikkontakt. Apparaten skall anslutas till jordat uttag.

Correct disposal of this product. This symbol indicates that this product should not be disposed of with your household waste, according to the WEEE Directive (2012/19/EU) and your national law. This product should be handed over to an authorized collection site for recycling waste electrical and electronic equipment (EEE). Improper handling of this type of waste could have a possible negative impact on the environment and human health due to potentially hazardous substances that are generally associated with EEE. At the same time, your cooperation in the correct disposal of this product will contribute to the effective usage of natural resources. For more information about where you can drop off your waste equipment for recycling, please contact your local city office, waste authority, or your household waste disposal service.

HR824 MK2

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Owner’s Manual

INTRODUCTION

· Theamplifiersaredesignedtoprovidemaximum acousticoutputfromthespeakers,yetminimize thedangerofspeakerdamageduetooverdriving.

ThankyouforchoosingtheMackieHR824MK2Studio Monitors.WebeganproducingtheoriginalHR824 StudioMonitorsin1997,andtheyquicklybecamethe standardbywhichnear-fieldstudioreferencemonitors werecomparedforextremelyflatfrequencyresponseat areasonableprice.TheHR824MK2shavebeen redesignedwithmoderncomponentsforimproved accuracyandanextendedlow-frequencyresponse.
Investments in Excellence…
WhenwedecideditwastimetoupdatetheHR824s, weturnedtoourexpertloudspeakerandtransducer designengineeringteamatEAWtodeterminehowto makeanalreadyexcellentstudiomonitorevenbetter. Thefirstthingtheynoticedwasthatthefrontbaffle couldberedesignedwitharounderaluminum constructiontofurtherreduceedgediffractionfor improvedimaging.Thevolumeofthecabinetwas increasedslightlytoimprovethelow-frequency response.Theamplifiershavebeenadjustedwithall new`voicing’tomatchthenewcabinets.However,the amplifiers’designisfundamentallythesameandhasa verysimilarcharacteristictotheoriginalmodel.Ifyou areupgradingfromtheoriginalHR824s,youwon’thave torelearnthesound.TheMK2sstilldelivertheclarity, ultra-linearfrequencyresponse,andbroadstereo imagingoftheoriginals.
Anelegantpiano-blackglossfinishemphasizesthat thesestudiomonitorsareinaclassbythemselves, pleasingtothemostdiscerningeyeaswellasthemost discerningear.
Theresult?TheHR824MK2StudioMonitorsare extremelyaccurateandversatile,loadedwithunique controlsthatallowyoutofine-tunethesoundtomatch yourindividualenvironmentprecisely.You’regonnalove these!

· Inaddition,theamplifiers’gainandfrequency responsesareindividuallyhand-trimmedto compensatefortypicalmanufacturingtolerances betweenthedriversandproduceasmooth frequencyresponsefrom35Hzto20kHz.
· Theconnectingwiresbetweentheamplifieroutputs andthedriversarekepttoanabsoluteminimum, sothedampingfactoroftheamplifierisn’t compromisedbytheresistanceoflongspeaker cables.
· Theacousticsumoftheoutputsfromthetwo driversareoptimizedelectronically,aswellas physically,sotheamplituderesponseisunityand thephasedifferenceisminimal.
Inshort,allthecomplexinterconnectedcomponents inthesystemaredesignedtoworkinharmonywith eachothertoproducethebestpossiblesound.
The Transducers…
Themonitorsfeaturean8.75-inchhigh-precision,lowdistortionwooferanda1-inchferrofluidcooledtitanium dometweeteronthefront,anda6-inchx12-inch ellipticalflatpistonpassiveradiatorintheback.
Thehigh-frequencydriverismountedonamassive, acousticallynon-resonantdie-castaluminumexponential waveguide,whichresultsinwide,controlleddispersion ofhigh-frequencysounds.Theuniquepassiveradiator designprovidestight,articulatebassresponsedownto 35Hz–anastoundingaccomplishmentforacabinet ofthissize!Andsincetheradiatorisproducingmostof thesoundatthelowestfrequencies,thereisverylittle distortionfromthewooferbecauseitsconemovement isminimalatthosefrequencies.

Tweeter

What are they? The Advantages…

TheHR824MK2StudioMonitorsarehighresolution,two-way,bi-amplified,activemonitors employinga6th-orderButterworthsystemwitha built-inrear-firingmass-loadedpassiveradiator. Whew!Therearemanybenefitstointegratingan activecrossover,poweramplifiers,anddriversinto asinglecabinet,andwe’vetakenfulladvantageof thesebenefitsinthedesignoftheHR824MK2.

Woofer

Passive Radiator
Power Amplifier/ Crossover Assembly

· Thecrossoverpointisdesignedsothatthe high-andlow-frequencydriversarefedonly thefrequenciestheyarebestableto reproduce.

Figure 1. HR824 MK2 Cutaway side view

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Owner’s Manual

HR824 MK2

The Cabinet…
ThecabinetismadeofMDFwithahigh-glosspianoblackfinish.Internalbracingincreasesthestrengthand rigidity(stiffness)ofthebox.Anopen-celladiabatic foammaterialfillstheinsideoftheboxtoabsorb internalreflectionsanddampenstandingwaves. Mountinghardwareisinstalledonthebottomofthe cabinetthatfitsthe60.0WBOmniMountwall-mount bracket(see”Placement”onpage6formoreinfo).
FR Series Power Amplifiers…
Whatbetterwaytopowertheloudspeakersthanwith ouracclaimedFRSeries”FastRecovery”power amplifiers.OurFastRecoverydesignuseslow negativefeedback,yetallowstheamplifiersto maintainlowdistortionandstabilityevenwhen drivenintoclipping.
Thelow-frequencyamplifierproducesupto150watts continuous(350wattspeak)beforeclipping,while thehigh-frequencyamplifierproducesupto100watts continuous(210wattspeak).

1. Connecttheline-levelmonitorsignalfromyourmixer, preamp,orothersignalsourcetotheSIGNALINPUT [1]jackontheHR824MK2StudioMonitor(1/4-inch PHONE,XLR,orRCA).
2. ConnectthesuppliedACpowercordtotheIECsocket [7]onthebackofthemonitor.Plugtheotherendinto anACoutletproperlyconfiguredwiththecorrect voltageforyourparticularmodel.
3. SetthePOWERMODE[6]switchontherearpanelto theONposition.Withthefrontpanelpowerswitch[9] out,thepoweramplifierisinStandbymode.
4. Startyoursignalsource(tapedeck,CD,DAW,or whatever),butleavethemastervolumecontrolonyour mixerorpreampdown.
5. Pushinthepowerswitch[9]onthefrontoftheHR824 MK2.Thepowerring[10]aroundtheswitchwill illuminate.
6. SlowlyturnuptheINPUTSENSITIVITY[2]controlon thebackofthemonitortoitsfullyclockwiseposition (NORMAL).
7. Adjustthemastervolumeonyourmixertoa comfortablyloudlisteninglevel.Enjoythesilkysmooth highsandauthoritative,commandinglowsofthe HR824MK2.Thenreadtherestofthismanual.

QUICK START
Werealizethatyoucan’twaittohook upyournewMackieHR824MK2High ResolutionStudioMonitorsandtry themout.Nevertheless,pleasetake thetimetoreadthispageNOW,and therestcanwaituntilyou’regoodandready.
EachoftheHR824MK2cabinetshasitsownbuiltinpoweramplifiers.That’sright,twoamplifiersper speakercabinet;oneforthehigh-frequencytweeter andoneforthelow-frequencywoofer.Youshouldturn theINPUTSENSITIVITY[2]controlonthebackofthe cabinetdown(fullycounterclockwise)beforeturning ontheStudioMonitorsforthefirsttime.Alsobesure tosetthepowerswitch[9]onthefrontpaneltoits standbyposition(out).Thiswillpreventyoufrom accidentallyconnectingahotsignalsourcetothe monitorsandgettingarudesurprise.
Thereareanumberofothersettingsyoucanmake onthebackoftheHR824MK2,andyoucanlookatthe graphicinstructionsrelatingtoeachofthemonthe backofthecabinet(orwaituntilyoureadaboutthem lateroninthismanualsoyoureallyknowwhatthey do).Fornow,justleavethematthefactorydefault settings(ACOUSTICSPACE=WHOLE;LOWFREQ= 49Hz;HIGHFREQ=0),exceptforthePOWERMODE [6]switch.BesureitissettotheSTANDBYposition.

AN EXTREMELY IMPORTANT NOTE ON HR824 MK2 BASS RESPONSE AND YOUR CONTROL ROOM.
YournewHR824MK2sachievetheir bestbassresponseinaroomthat’s optimizedforbassreproduction.A lotoffactorscanconspiretothwart theHR824MK2s’extendedlow frequency–includingroomshape,roomvolumeand acousticaltreatment.
Thisisnotacop-outoranapology.It’splainold physicsinaction.Luckilywe’vearmedyouwithsome compensatingcontrolsthatyoucanusetooptimizethe frequencyresponseofthespeakersinyourparticular room.Considerthefollowing:
The ACOUSTIC SPACE switch must be set correctly.
WhenyouputyourHR824MK2sinacornerorup againstwalls,theirbasscharacteristicschange.Adjust theACOUSTICSPACE[3]switchsettingaccordinglyto avoidmuddyorexaggeratedlowfrequencyresponse.

HR824 MK2

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Owner’s Manual

INTERNAL BI·AMPLIFICATIO

10dB

OFF

NORMAL

INPUT SENSITIVITY

QUARTER HALF WHOLE (NORMAL)
ACOUSTIC SPACE

80Hz 47Hz 37Hz

LOW CUT

(NORMAL)

LOW FREQ

2dB 0 +2dB
(NORMAL)
HIGH FREQ.

STANDBY

AUTO ON

POWER MODE

SIGNAL INPUTS BAL/UNBAL

PHONE

XLR

RCA

PATENT NO: DES. 387,351

MAINS INPUT

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Owner’s Manual

HR824 MK2

Feel free to experiment.

Placement

Inmanyrespects,everyroomisuniqueintermsofits acoustics.
Evenafteryou’vereadabouthowtosettheHR824 MK2’srearpanelswitches,tryothersettingstoseeif yourparticularroomenvironmentrequiresdifferent adjustments.
And,evenafteryou’veplacedyourmonitorswhereyou thinkthey’llsoundbest,trymovingthemaround.You mightbepleasantlysurprised.
Finally, keep an open mind about improving your room’s acoustics and bass-handling ability.
Nobodylikestobuyanewsetofmonitorspeakers andthenbetoldthattheyshouldspendextrabuckson basstrapsoraremodelingjob.Butthesimplefactis, “standard”rooms,i.e.,rectangularroomsin conventionalbusinessorresidentialstructures,are rarelyifeverconducivetooptimallowbass reproductionwithoutsomemodifications.
Luckily,thereareplentyofoptionsshortofbuilding anewcontrolroom,manyofwhicharecoveredinthis manual.
Additional Tidbits of Wisdom

TheHR824MK2sweredesignedtobeplacedina verticalposition.Ifyoufinditnecessarytoplacethe speakersinahorizontalposition(ontheirsides),place themsothatthewoofersaretowardtheinside;thatis, sothewoofersareclosesttoeachother.Thisprovides thebestlow-frequencysummingandoverallimaging.
TheHR824MK2smayalsobewall-mountedusing themountinghardwarelocatedonthebottomofthe cabinet.Thesearecurrentlydesignedtobeusedwith theOmniMount60.0WB(Wall-to-Bottom)wall-mount bracket,whichprovidesawiderangeofhorizontaland verticalmovementtomeetyourcoveragerequirements. However,manycompanieschangespecifications withoutnotice.Infact,whilethisparticularmodel stillfitstheHR824MK2,Omnimountnolonger manufacturesthem.Additionally,HR824MK2sare notcompatiblewithanyotheravailablemounting hardware.YoustillmightbeabletofindOmniMount 60.0WBwall-mountbracketsforsaleoneBay, Craigslist,eHarmony,HarmonyCentraland/orother usedgearbrokersorconsumer-to-consumerwebsites. Weapologizeforanyinconvenience.
Whenthemonitorisoperatedathighsoundpressure levels,afairbitofheatcanbegeneratedbytheinternal poweramplifiers.Theseinternalamplifiersarepartof therearpanelelectronicsassembly.Toensureadequate ventilation,therearofthemonitorshouldbeplacedat leastthreeinchesawayfromthewall.

· Whenyoushutdownyourequipment,turnoffthe HR824MK2studiomonitorsfirsttopreventthumps andothernoisesgeneratedbyanyupstreamequipment fromcomingoutthespeakers.Whenpoweringup,turn onthemonitorslast.
· Savetheshippingbox!Youmayneeditsomeday,and youdon’twanttohavetopayforanotherone.
· Saveyoursalesreceiptinasafeplace.
· AlsorecordallHR824MK2serialnumbersinthespace providedonthenextpage,alongwithwhereandwhen youboughtthem.

Note:TheMackielogocanberotated90ºso thatitisorientedcorrectlywhenplacingthe speakersontheirsides.Gentlypullouton theMackieemblem,rotateit,andpushit backintoplace.

HR824 MK2

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Owner’s Manual

A Few Words About THXTMpm3TM Certification

Contents

Nearlytwodecadesago,GeorgeLucasturneda passionforgreatsoundintotheworld’smostaccepted andtrustedsolutionforachievingit.Thestandardwas namedTHX(forTomlinsonHolman,whodeveloped theTHXSoundSystemwhenhewastheresearchand technicaldirectoratLucasfilmLtd.TMintheearly80s), andtoday,withhundredsofthousandsofhometheater customersandmorethan3000THXCertifiedmovie theatersenjoyingitsbenefits,theTHXnamehas becomenothingshortoflegendary.Simplyput:when itcomestopremiumsound,noothernamesoclosely defines`quality’formillionsofmovie-goersandhome theaterenthusiastsalike.
Today,anewlandscapeisemerging.Alandscape comprisedofhundredsofsmall,professionalmultichannelfacilities,whoseneedfordifferentiation,expert technicalandmarketingsupport,andatrue,multichannelstandardisbecomingacompetitivefactoflife. Again,THXhasasingularsolutionandthistimeit’s calledTHXpm3Certification.
Allfacilitiesinvolvedwithmixingand/ormonitoring ofmulti-channelmaterialshouldhavetheoptiontouse pm3.THXpm3CertificationisidealforDVDmastering, sweetening,andmixing;andisalsoperfectforfacilities doingworkinbroadcast,music,ormulti-media applications.

IMPORTANT SAFETY INSTRUCTIONS………..2
INTRODUCTION………………………………………….. 3
QUICK START………………………………………………………………… 4
REAR PANEL DESCRIPTION …………………………8
1. SIGNAL INPUTS………………………………………………………. 8 2. INPUT SENSITIVITY……………………………………………….. 8 3. ACOUSTIC SPACE……………………………………………………. 8 4. LOW FREQ FILTER………………………………………………….. 9 5. HIGH FREQ FILTER…………………………………………………. 9 6. POWER MODE……………………………………………………….10 7. Mains Input ……………………………………………………………10 8. Passive Radiator …………………………………………………….11
FRONT PANEL DESCRIPTION……………………..12
9. Power Switch…………………………………………………………12 10. Power Ring and Overload Indicator ………………….12
PROTECTION CIRCUITS………………………………12
Overload Protect ……………………………………………………..12 Thermal Protect……………………………………………………….. 13 Integrated Magnetic Shielding……………………………….. 13 Input Signal Wiring………………………………………………….. 13

HR824 MK2 THX pm3 Certification
WhenwesubmittedtheHR824MK2sforTHXpm3 Certification,theypassedonthefirsttrywithno modifications!
AnyoneseekingTHXCertificationfortheirstudio, orstrivingtomaintainTHXstandards,canusethe HR824MK2sandrestassuredthattheirfacilityisin fullcompliance.

CARE AND CLEANING…………………………………13
SERVICE INFO………………………………………………14
Troubleshooting………………………………………………………..14 Repair………………………………………………………………………… 15
TECHNICAL INFORMATION……………………… 16
HR824 MK2 Specifications ………………………………………….16 Graphs………………………………………………………………………..17 HR824 MK2 Block Diagram………………………………………18

·Pleasewritetheserialnumberforyourstudiomonitorhere (allstudiomonitorsifyouhavemorethanone)forfuturereference (i.e.,insuranceclaims,techsupport,returnauthorization,etc.):

Monitor 1

Monitor 2

Monitor 3

Purchasedat:___________________________________DateofPurchase:_____________

PartNo.SW0593Rev.G07/14

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Owner’s Manual

HR824 MK2

REAR PANEL DESCRIPTION

Thisiswhereyouconnectyoursignaltothemonitor, andmakeadjustmentstothefrequencyresponseof thespeakerstomatchthemonitor’slocationandyour room’senvironment.
ForTHXapplications,therearpanel switchesandcontrolsshouldbeset totheTHXpositionsasindicatedin thissection.

2. INPUT SENSITIVITY
10dB

OFF

NORMAL

INPUT SENSITIVITY

THX = NORMAL

1. SIGNAL INPUTS

Thelocationofthesignalinputjacksmakesthe connectorsexitdownandnotstraightoutthebackof theenclosure.Thisflush-mountdesignallowsyouto placethemonitorrightupagainstthewallifdesired.

· TheXLRfemale,TRSfemale(balanced),andRCA female(unbalanced)inputconnectorsareprovidedfor userconvenience.

· Don’tconnectmorethanonesourcetothejacks.

· UnbalancedTS(tip-sleeve)linescanbeaccommodated viatheTRSjack.Makesurethecableterminateswith aTSplug(likeaguitarplug),orifit’saTRSplug(such asaheadphoneplug),makesuretheringistiedtothe sleeveandthattheplugisfullyinsertedintothejack.

· TheXLRandTRSinputconnectorsacceptbalancedor unbalancedsignals.Theconnectorsarewiredasfollows (pertheAES/IECstandard):

XLR TRS RCA

TheHR824MK2expectsaline-levelsignalatitsinput connectors. · Thereferencesensitivityis7.5dBu=100dBSPLat
onemeter(39inches)withtheINPUTSENSITIVITY controlsettoitsNORMALposition(inotherwords, wideopen). · TheHR824MK2isdesignedtooperatewitha+4dBu signalwhentheINPUTSENSITIVITYcontrolisinthe NORMALposition. · RefertotheQUICKSTARTsectiononpage4forthe level-settingprocedure.
3. ACOUSTIC SPACE
QUARTER HALF WHOLE (NORMAL)
ACOUSTIC SPACE

Hot(+) Cold() Shield(Ground)

Pin2 Pin3 Pin1

Tip Tip Ring — Shield Shield

· TheHR824MK2scanbeusedwithahomereceiver evenifthereceiverlacksapreampoutputbyusinga speaker-leveltoline-levelsignalattenuator.(Seepage 13formoreinformation.)

THX = WHOLE (NORMAL)
Thisisathree-wayswitchthatadjuststhe low-frequencyresponseofthemonitorstocompensate fortheirplacementintheroom.Seepage5foran overviewoftherearpanel.
· IfyouplacetheHR824MK2monitorsagainstawall (halfspace[3B]),settheACOUSTICSPACEswitch tothe”B”position.Thisactivatesashelvingfilterto reducethelow-frequencyoutputby2dBtocompensate forthehalf-spaceplacement.
· Ifyouplacethemonitorsintothecornersofyour room(quarterspace[3A]),thelow-frequencyoutput approximatelydoublesfromwhatitisinhalfspace. SettheACOUSTICSPACEswitchtothe”A”positionto reducethelow-frequencyoutputby4dBtocompensate forthequarter-spaceplacement.
· IfyouusetheHR824MK2sfree-standing,awayfrom wallsandcorners(wholespace[3C]),setthe ACOUSTICSPACEswitchtothe”C”position (NORMAL).

HR824 MK2

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Owner’s Manual

4. LOW FREQ FILTER

80Hz 47Hz 37Hz

LOW CUT

(NORMAL)

LOW FREQ

Removingthelow-frequencycontentalsoallows youtoraisetheoveralloutputlevelsomewhat.Lowfrequencyinformationrequiresthelargestamountof anamplifier’soutput,sorestrictingthelow-frequency contentallowsraisingthemid-frequencylevel somewhat.IfyourclientinsistsonmixingLOUD,this maybeaworkablestrategy.

THX = 80Hz

5. HIGH FREQ FILTER

TheLOWFREQFILTERswitchinsertsalow-frequency rolloffintotheresponsecurve.

· Forsomeapplications,thelow-frequencyoutputof theHR824MK2mayimpairyourabilitytomakemix judgements.

2dB 0 +2dB
(NORMAL)
HIGH FREQ.

· ForTHXapplications,usethe80Hzsetting.
· Fornon-THXapplicationswhereasub-wooferisn’t enhancinglow-frequencyoutputusethe37Hz (NORMAL)position.
· TheLOWFREQswitchaffectsthelow-frequency

THX = 0 dB
TheHIGHFREQFILTERswitchtailorstheoverall high-frequencyresponseby±2dBbeginningat10kHz. Leavethisswitchinthe0(NORMAL)positionunless:

· crmslYieioommavuneyiuttcreaelsaancdenttt,eluuoosaaofwsleylsr-yofmetruhmienareqlocmluLvreeeiOrinxanlWg.soceRyutFhedictRemsaipEpndeeaQemtabehksbipelweeibtrfriy,itanhce(sahsosllpiw’skcmeoe8tcnih0ixaatHi.enlclzngeystrpotoownansieointrpwikpolIaiNonitTynhp1Eb5tRu0NoaWAlc.aLLkBr.FI·.A/M10P0LWI···FI.CHA.FTI.YPYsnOpooieguuerhahwjtkuasaepsinrtsnstly.iftkoroouensthutoabomvtfelyaixhbdeoroaniugrhtibnhltegeenMlborosairsgrshdchataaruslkisldeesendtaotbcrhyked.tuosololumsnidadeno.yfthe

2-waynearfieldmonitor).Youmayneedtodothisifa

Ifyourmixesconsistentlysounddullordarkwhen

smallspeakeristheeventualdestinationofyourmix, youlistenelsewhere,thisusuallyindicatesthatyour

orperhapsjusttoseehowyourmixsoundsonaclock monitorsaretoobright,relativetoyournormalhearing.

radio.

Abitlesshigh-frequencyenergyusuallyfixesthis,and

youcanforcethemixinthisdirectionbyreducingthe

LISTED COMMERCIAL AUDIO EQUIPMENT 65HJ

high-frequencyoutputofthemonitorsbyusingthe 2dBpositionoftheswitch.

OFF

NORMAL

INPUT SENSITIVITY

QUARTER HALF WHOLE (NORMAL)
ACOUSTIC SPACE

80Hz 47Hz 37Hz

LOW CUT

(NORMAL)

LOW FREQ

2dB 0 +2dB
(NORMAL)
HIGH FREQ.

STANDBY

AUTO ON

POWER MODE

SIGNAL INPUTS BAL/UNBAL

PHONE

XLR

RCA

PATENT NO: DES. 387,351

MAINS INPUT

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Owner’s Manual

HR824 MK2

Conversely,ifyourmixesareconsistentlytoobright, thenaddingsomeadditionalhigh-frequencyenergyin themonitorssatisfiesyourears,andtheresultantmix haslessHFcontent.

6. POWER MODE

Thetimbreofyourmonitorsaffects thewaythatyourmixesplayonother equipment.Rememberthatthe monitorshaveamirroringeffecton themix;ifthemonitorsmake somethingtooloudinthemixitusuallyresultsinnot enoughofthatthingontape.
Startwiththeresponsemodificationswitchesinthe factoryrecommendedsettings(seeQuickStart Section).Afterprolongedlistening,ifyounoticeatrend inyourmixes,perhapsmakingsomesmalladjustments assuggestedherewillhelp.
It’sarealrushtomixreallyloud.Butrememberthat theresultingmixonlysoundsgoodwhenyouplayitat leastthatloud.Howeverstrangeitmaysound,mixes madeatlowerlevelssoundevenbetterwhenplayed loud;perhapsevenabitbiggerthanlife.
Getthatsoundlevelmeterout.Decidewhatlevel you’regoingtomixatandusethemetertohelpkeep yourmixingatthatlevel.Yourearswillthankyou,and yourmixeswillbebetterforit.

STANDBY

AUTO ON

POWER MODE

This3-positionswitchturnstheamplifiersonoroff,or setsthemtoautomaticmode.Usethisswitchtosetthe HR824MK2stoyourpreferredmodeofoperation,and usethefrontpanelpower [9]switchforconvenience.
· IntheSTANDBYposition,thepoweramplifiersarein Standbymodeandproducenosound.Low-levelcircuitry isstillactive,butthepowerconsumptionofthe circuitryisminimal(8watts).
· FliptheswitchtotheONpositionandthepower amplifiersareliveandoperatenormally.(Thefront panelpower[9]switchmustalsobeIN.)
· Whenit’sintheAUTOONposition,theamplifiersturn onandoffdependingonthepresenceorabsenceofan inputsignal.Aninputsignallevelof45dBu (minimum)activatestheauto-onfunction.Asilent periodgreaterthaneightminutesactivatesthe auto-offfunction.Thepowerring[10]onthefront panelreflectsthestateoftheamplifiers.

QUARTER SPACE

HALF SPACE

WHOLE SPACE

CONSOLE

SPEAKERS IN CORNERS A

SPEAKERS AGAINST WALL B

SPEAKERS AWAY FROM WALLS C

ACOUSTIC SPACE APPLICATIONS

0dB
3dB

LOW CUT LOW CUT 24dB/oct BUTTERWORTH

37Hz 47Hz 80Hz LOW FREQ

0dB
2dB 4dB

100Hz

ACOUSTIC SPACE

+2dB
0dB 2dB

10kHz

HIGH FREQ

TM INTERNAL BI·AMPLIFICATION
150W. L.F. / 100W. H.F.

LISTED COMMERCIAL AUDIO EQUIPMENT 65HJ

10dB

OFF

NORMAL

INPUT SENSITIVITY

QUARTER HALF WHOLE (NORMAL)
ACOUSTIC SPACE

80Hz 47Hz 37Hz

LOW CUT

(NORMAL)

LOW FREQ

2dB 0 +2dB (NORMAL)
HIGH FREQ.

STANDBY

AUTO ON

POWER MODE

SIGNAL INPUTS BAL/UNBAL

PHONE

XLR

RCA

PATENT NO: DES. 387,351

MAINS INPUT

HR824 MK2

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Owner’s Manual

7. Mains Input
ConnectthepowercordtothisIECsocket,andplug theotherendintoyourACoutlet.
· WhenthePOWERMODE[6]switchisintheON position(andthefrontpanelpowerswitch[9]isinthe INposition),applyingACpoweractivatesthemuting circuitforaboutfoursecondswhilethepowersupply andinternalcircuitrystabilize,thentheHR824MK2 unmutesandisreadytogo.
8. Passive Radiator
Whenyoumountaloudspeakerinabox,therearetwo thingsthatyoucandowiththeradiationfromtherearof thecone:useittoenhancethelow-frequencyperformance ofthespeakersystem(bassreflexsystem)orsoakitup (acousticsuspensionsystem).
· Abassreflexsystemusestherearradiationtoextend thelow-frequencyresponse.Mostsystemsprovideholes (ports)inthefrontorbackofthecabinettoreleasethe rearwave.Sometimestheholeshavetubes(ducts)in them.Thedimensionsoftheholesandthevolumeof thecabinetworkwiththecharacteristicsofthewoofer toproducelow-frequencyextension.Thesesystemsare characterizedbygoodlow-frequencyperformancedown tothe3dBfrequencysetbythedesign.Belowthis frequency,thefrequencyresponsefallsat24dB/octave ormore. TheHR824MK2isabassreflex6th-ordersystem.
Ratherthanuseports,theventtakestheformofa passiveradiator,amass-loadedflatpistoncoupledto theairtrappedwithintheenclosure.Youcan’tseethe passiveradiatorbecauseitislocatedattherearofthe cabinet,behindthepoweramplifierassembly.

· Simpleportsorductsmusthavesufficientsurface areatopreventthevelocityoftheairwithinthemfrom exceeding5%ofthespeedofsound,whichkeepsthe ventfrombecomingaudible(breathingandwheezing sounds)athighsignallevels.
· Thisrequirementforsufficientsurfaceareacreatesa designproblemwhenusingports–findingenough spaceintheenclosureforthemtofit.
Thepassiveradiatorreplacestheportfoundonmost speakersystems.Itoffersseveraladvantagestosimple porting:
· Oneprimaryadvantageofapassiveradiatoristhatit canreproducelowfrequencieswithlowerdistortion andatahighersoundpressurelevel(SPL)thana simpleportorduct.
· Ouruniquepassiveradiatordesignusesaflat diaphragmprovidingexceptionalstiffnesstothe radiatingsurface.
· Theellipticalshapeofthepassiveradiatortakesup nearlytheentiresurfaceareaavailableontherearof theenclosure,allowingthepassiveradiatortomove moreairthanaport.

Passive Radiator

Tweeter

Woofer

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Owner’s Manual

HR824 MK2

FRONT PANEL DESCRIPTION

9. Power Switch

UsethisswitchtoturnonorofftheHR824MK2from thefront.ItworkswiththePOWERMODE[6]switch ontherearpanelinthefollowingway:
· IfthePOWERMODEswitchontherearpanelisset toSTANDBY,thefrontpanelpower[9]switchhasno effect.Thepower[10]ringremainsoff.
· IfthePOWERMODEswitchisON,thefrontpanel powerswitchturnstheHR824MK2onorreturnsitto STANDBYmode,asindicatedbythepowerring.
· IfthePOWERMODEswitchisintheAUTOON position,thefrontpanelpowerswitchturnstheHR824 MK2on,evenwhenthereisnosignalpresent.Ifthereis nosignalafterabouttwominutes,theauto-offfunction isactivatedandtheamplifiersgointoStandbymode, indicatedwhenthepowerringgoesoff.

STANDBY

AUTO ON

POWER MODE

10. Power Ring and Overload Indicator

Thepowerringaroundthepowerswitchilluminates whenthepoweramplifiersareon,andturnsoffwhen theamplifiersareinStandbymodeoroff.

Thepowerringturnsredwhentheoverload protectioncircuithasbeentriggered.

· Occasionalblinkingoftheoverloadindicatormeans thattheloudesttransientsarereachingthemaximum drivecapabilityoftheamplifiers.Thisisokay,although distortionmaybeaudible.
· Frequentorcontinuousblinkingoftheoverload indicatormeansthatyouhaveexceededthemaximum driveallowedforthespeakers.Theamplifiersare clipping,andtheoverloadprotectioncircuithastaken over,reducingtheinputlevel.Youshouldreducethe levelfromyoursignalsourceuntiltheoverload indicatorblinksoccasionallyornotatall.
PROTECTION CIRCUITS
Thereareanumberofprotectionmechanisms designedintotheHR824MK2tosafeguardthe loudspeakersfrominadvertentdamage.
CAUTION:Theprotectioncircuitsaredesignedto preventdamagetotheloudspeakersunderreasonable andsensibleconditions.Shouldyouchoosetoignore thewarningsigns(i.e.,frequentoverloadindications, excessivedistortion),youcanstilldamagethespeakers intheHR824MK2byoverdrivingthem.Suchdamageis beyondthescopeofthewarranty.

Overload Protect
· Ifyouseetheoverloadindicator[10]blinkingmore thanjustoccasionally,it’sanindicationthatyoushould reducethesignallevelcomingfromyourmixerorother signalsource.
· Theblinkingoverloadindicatormeansthedriver thermaloverloadprotectionhasactivatedacompressor. Thisreducestheinputleveltotheamplifiers.
· Thecompressorwasdesignedtoprotectthespeakers anditsactionishighlyaudible.
Ifaclientinsistsonlisteningtothe monitorsataveryhighvolume,you mayfindthattheoverloadindicator lightsfrequently.Sincethemajorityof thepowerrequirementinanymonitor arethelowfrequencies,selectivelyreducingthelow endcanprovidealittlemoreheadroomandvolume forthemonitors.ChangetheLOWFREQFILTER[4] switchto80Hzifnecessary,toreducethebassresponse. ThismayallowtheHR824MK2stoplayjustenough loudertosatisfytheclientandtoeliminatemostofthe amplifierclipping.

HR824 MK2

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Owner’s Manual

Thermal Protect
Allamplifiersproduceheat.TheHR824MK2is designedtobeefficientbothelectricallyandthermally.
· Ifforsomereasontheheatsinksgettoohot,athermal switchactivates,placingtheHR824MK2intoStandby mode(indicatedwhenthepowerring[10]turnsoff).
· Shouldthishappen,makesurethatairflowtotherear ofthecabinetisnotrestricted.
· Whentheheatsinkscooldowntoasafetemperature, theswitchr esetsandnormaloperationresumes.
Integrated Magnetic Shielding
TheHR824MK2StudioMonitorcontainsdrivers withlargemagnetstructures.Thedrivers’magnetsare shieldedtohelppreventthemagneticfieldfrom radiatingoutintotheenvironmentandplayinghavoc withcomputermonitorsorTVscreens.Unshielded speakerscancausedistortioninboththeshapeand colorofthepictureifplacedtooclosetoaCRT (cathoderaytube).Ifyouhaveaparticularlysensitive computermonitororTVscreen,itmaybenecessaryto movethespeakersafewinchesaway.

CARE AND CLEANING
Removetheprotectiveplasticfilmthatencasesthe cabinet.
Note:Youmayleavetheprotective plasticfilmonthecabinetifyou wish,oryoucanremoveallbutthe sidethatwillbeincontactwiththe surfaceitissittingontoprotectthe finish.Also,youshouldsavetheprotectiveplasticfilm toreapplytothecabinetincaseyouneedtomoveitto anotherlocation(orreturnforservicing).
Thepiano-blackfinishontheHR824MK2cabinetsis exceedinglybeautiful,yetextremelydelicate.Cleanthe outsideofthecabinetwithadryoptical-grade non-scratchcloth,suchasyouwouldusetoclean eyeglasses,CDs,orDVDs.

Input Signal Wiring
Youshouldusehigh-quality,shieldedcabletoconnect thesignalsourcetotheSIGNALINPUTjack[1]onthe HR824MK2.
· Foilshieldedcables,suchasBelden8451,8761,or9501 arecommonlyusedforstudiowiring.
· Microphonecablesworkwell. · Thebettertheshield,thebettertheimmunityfrom
externallyinducednoise(likeEMIandRFI).Routethe cableawayfromACpowercordsandoutlets.Theseare commonsourcesforhuminanaudiosignal.Wallwarts andlinelumpsareespeciallyinsidioushuminducers! YoucanpurchasequalitycablesfromyourMackie dealer. · Incertainhometheaterapplications,itmaybe necessarytoconnectthespeakeroutputsfromastereo receivertotheinputsoftheHR824MK2s,ifthereceiver doesn’thavepreampoutputsorotherline-leveloutput connections.
CAUTION:Donotattemptto connectaspeakeroutputdirectly totheinputoftheHR824MK2! Speakerlevelsaremuchhigherthan linelevelsandcandamagetheinput circuitryintheHR824MK2.
Youcan,however,insertaspeaker-leveltoline-level signalattenuatorbetweenthereceiver’sspeakeroutput andtheHR824MK2’sinput.YourMackiedealermaybe abletohelpyoufindone,oryoucanbuildyourown.
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Owner’s Manual 13

HR824 MK2

SERVICE INFO
DetailsconcerningWarrantyServicearespelledoutin theWarrantysectiononpage19.
Ifyouthinkyourmonitorhasaproblem,pleasecheck outthefollowingtroubleshootingtipsanddoyourbest toconfirmtheproblem.VisittheSupportsectionofour website(www.mackie.com/support)whereyouwillfind lotsofusefulinformationsuchasFAQs,and documentation.Youmayfindtheanswertothe problemwithouthavingtosendyourmonitoraway.
Troubleshooting

Bad Sound
· Istheinputconnectorpluggedcompletelyintothe jack?Ifusinga1/4″TSorTRSplug,makesureitis pluggedallthewayin.
· Isitloudanddistorted?Reducethesignallevelatthe mixer.
· Ifpossible,listentothesignalsourcewithheadphones pluggedintothepreampstage.Ifitsoundsbadthere, it’snotthemonitor.
· Toomuchbassornotenoughbass?Movearoundthe roomandseeifthebassresponsechanges.It’spossible yourlisteningpositioncoincideswitharoommode wherethelowfrequencieseitherbecomeexaggerated ornulled.Ifso,trymovingthemonitorstoadifferent position,ormovingyourlisteningposition.

No Power
· Ourfavoritequestion:Isitpluggedin?
· MakesurethepowercordissecurelyseatedintheIEC socket[7]andpluggedallthewayintotheACoutlet.
· MakesuretheACoutletislive(checkwithatesteror lamp).
· Isthepower[9]switchonthefrontpanelpushedin andthePOWERMODE[6]switchontherearpanelin theONposition?
· Isthepowerring[10]onthefrontpanelilluminated? Ifnot,makesuretheACoutletislive.Ifso,referto”No Sound”below.
· Ifthepowerringisnotilluminated,andyouarecertain thattheACoutletislive,itwillbenecessarytohave theHR824MK2serviced.There are no user-serviceable parts inside. Referto”Repair”attheendofthissection tofindouthowtoproceed.
No Sound
· Isthepowerring[10]onthefrontpanelilluminated?If not,referto”NoPower”above.
· IstheINPUTSENSITIVITY[2]controlturnedup?
· Isthesignalsourceturnedup?Makesurethesignallevel fromthemixingconsole(orwhateverdevice immediatelyprecedesthestudiomonitor)ishigh enoughtoproducesound.
· Ifit’sastereopair,tryswitchingthemaround.For example,ifaleftoutputispresumeddead,switchthe leftandrightcordsatthemonitorend.Iftheproblem switchessides,it’snotthemonitor.Itcouldbeabad cable,ornosignalfromthemixer.

Noise/Hum/Buzz
· Checkthesignalcablebetweenthemixerandthe monitor.Makesureallconnectionsaresecure.These problemsusuallyproducecracklingnoises,hum,or buzz.
· IfconnectinganunbalancedoutputtotheHR824MK2 balancedinput,makesuretheshieldisconnectedtothe unbalancedgroundofthesourceandtopins1and3of theXLR(orthesleeveandringoftheTRSjack).
· IfaCATVcableisconnectedtothesystem,try disconnectingit.Ifthehumgoesaway,callyourcable carriertocheckforpropergroundingofthecable.
· MakesurethesignalcableisnotroutednearACcables, powertransformers,orotherEMIsources(including wallwartsandlinelumps!).Thesesourcesusually producehum.
· Istherealightdimmerorothertriac-baseddeviceon thesameACcircuitasthemonitor?Dimmerscause buzzingnoises.UseanAClinefilterorplugthemonitor intoadifferentACcircuit.
· Excessivehissisanindicationofanincorrectgain settingsomewherebeforethespeaker.
· Ifpossible,listentothesignalsourcewithheadphones pluggedin.Ifitsoundsnoisythere,it’snotthemonitor.
I hear sound from the monitors after I switch the AC power off!
· Usethefrontpanelswitchtoturnthemonitorsonand off,orturnoffthesignalgoingtothemonitorswhenthe ACpoweristurnedoff.

HR824 MK2

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Owner’s Manual

Repair
Forwarrantyservice,pleaserefertothewarranty informationonpage19.
Non-warrantyserviceforMackieproductsis availableatafactory-authorizedservicecenter.Tolocate yournearestservicecenter,visitwww.mackie.com,click “Support”andselect”LocateaServiceCenter.”
Ifyoudonothaveaccesstoourwebsite,pleasecall ourTechSupportdepartmentat1-800-898-3211(normal businesshours,PacificTime),toexplaintheproblem. Theywilltellyouwherethenearestfactory-authorized servicecenterislocatedinyourarea.
ServiceforMackieproductslivingoutsidetheUnited Statescanbeobtainedthroughlocaldealersor distributors.

Need help with your new HR824 MK2?

· Visitwww.mackie.comandclickSupporttofind:

FAQs,manuals,andaddendums.

· Emailusat:techmail@mackie.com.

· Telephone1-800-898-3211tospeakwithoneofoursplendid technicalsupportrepresentatives,(normalbusinesshours, PacificTime).

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Owner’s Manual 15

HR824 MK2

TECHNICAL INFORMATION

HR824MK2Specifications

Enclosure
Materials and Construction: 3/4-inch (19 mm) thick MDF cabinet construction with internal bracing to add to cabinet stiffness.
Piano-black gloss finish.
Die-cast aluminum exponential wave guide for controlled, wide dispersion from high-frequency driver and Zero Edge BaffleTM to minimize diffraction around the cabinet edges.
Open cell adiabatic “foam fill” acoustical damping material absorbs internal reflections, preventing delayed sound coloration.
Flush-mount connector system allows monitor to be placed against a wall without need for connector clearance.

Transducers

Low-frequency driver: Diameter: Sensitivity (2.83V, 1 m): Nominal Impedance: Voice Coil Diameter: Frame: Magnet: Fully shielded:

8.75 inches (222mm) 91 dB SPL 4 ohms 1.6 inches (40 mm) Die-cast magnesium Ferrite Ferrite opposing magnet

High-frequency driver: Sensitivity (2.83V, 1m):

91 dB SPL

Nominal Impedance:

Power Handling (Long Term/Program):

20/50 watts

Frequency Range:

1.6 kHz to 22 kHz

Diaphragm/Suspension: Titanium with polymer suspension

Voice Coil Diameter:

1.0 inch (25.4 mm)

Magnet:

Neodymium

Bucking Magnet:

Ferrite opposing magnet

Passive Radiator: 6-inch x 12-inch (152mm x 305mm) mass-loaded elliptical flat piston with variable thickness filleted edge rubber surround.

Crossover Section
Crossover Type: Modified Linkwitz-Riley, 24 dB/octave @ 1900 Hz

Amplifier Section

Low-frequency power amplifier

Rated Power (at 1 kHz with 1% THD):

150 watts

Rated Load Impedance: 4 ohms

Burst Power Output:

350 watts

Rated THD (1W to 1 dB of rated power):

0.1 %

Slew Rate:

35V/µS

Distortion (THD, SMPTE IMD, DIM 100):

< 0.035%

Signal-to-Noise

(20Hz-20kHz, unweighted, referenced to 150W into 4):

> 102 dB

Cooling:

Convection

Design:

Class AB, Parametric Servo

Feedback

High-frequency power amplifier

Rated Power(at 1 kHz with 1% THD):

100 watts

Rated Load Impedance: 6 ohms

Burst Power Output:

210 watts

Rated THD (1W to 1 dB of rated power):

0.1 %

Slew Rate:

35V/µS

Distortion (THD, SMPTE IMD, DIM 100):

< 0.035%

Signal-to-Noise

(20 Hz-20 kHz, unweighted, referenced to 100 W into 6 ohms):

> 102 dB

Cooling:

Convection

Design:

Conventional Class AB

System Specifications

Input Type:

Balanced Differential

(XLR and 1/4″ TRS)

Unbalanced (RCA)

Input Impedance:

20 k Balanced

10 k Unbalanced

Input Protection:

RFI and Level Protected

Maximum Input Level:

+20 dBu

Low Frequency Filter:

3 dB @ 37 Hz, 2nd-order transitional high-pass filter

3 dB @ 47 Hz, 4th-order Chebyshev high-pass filter

3 dB @ 80 Hz, 4th-order Butterworth high-pass filter

HF Equalization:

±2 dB @ 10 kHz, shelving

Acoustic Space:

A position:

4 dB @ 50 Hz, shelving

B position:

2 dB @ 50 Hz, shelving

C position:

Flat

Compressor:

Independent high and low frequency overload detection

Low Line Voltage Shut Down: 60% of Nominal Line

Thermal Protection:

Amplifier Shut-Down, Auto Reset

Muting:

5 seconds at turn-on

Driver Protection:

Independent LF and HF Detection

Overall Compression

HR824 MK2

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Owner’s Manual

Acoustic Section

Free-Field Frequency Response: ±1.5 dB, 37 Hz to 20 kHz

Lower cutoff frequency: 3 dB @ 35 Hz

Upper cutoff frequency: 3 dB @ 22 kHz

Sound Pressure Level at 1 meter, 7.5 dBu into balanced input:

100 dB SPL @ 1m

Maximum peak SPL per pair:

120 dB SPL @ 1m

Maximum short term SPL on axis,

half space 80 Hz to 2.5 kHz:

111 dB SPL @ 1m

Residual noise (maximum gain, 600 source,

20 Hz-20 kHz bandwidth):

< 8 dB SPL @ 1m

Rated Line Input Voltage and Power:

Power consumption

Standby mode:

8 watts

Quiescent (idle):

18 watts

Musical Program, Loud mix: 135 watts

Rated Power (For UL-6500, CSA-E65-94, EN-60065):
150 watts

US: Europe: Korea: Japan:

120 VAC, 60 Hz 240 VAC, 50 Hz 220 VAC, 60 Hz 100 V, 50-60 Hz

Note: The HR824 MK2 does not support multiple voltage configurations. Make sure the voltage rating for your particular model (as indicated on the rear panel near the IEC socket) corresponds with your local AC mains voltage.

Graphs

-0

-1

-2

-3

-4 d
B -5
u -6

-7

-8

-9

-10

-11

-12

-13

-14

-15

-0

-1

-2

-3

-4 d
B -5
u -6

-7

-8

-9

-10

-11

-12

-13

-14

-15

HR824 Acoustic Space Filter Response

100

200

500

HR824 High Frequency EQ Filter Response

100

200

500

10k

20k

10k

20k

Physical Properties

Height:

16.8 in/42.5 cm

Width:

10.8 in/27.3 cm

-1

-3

Depth Enclosure: 11.4 in/29.0 cm

-5 -7

Depth Overall: 13.8 in/35.1 cm

-9 -11

Weight:

34.6 lb/15.7 kg

-13 -15

-17

d -19
B u -21

-23

LOUD Technologies is always striving to improve our products

-25

-27

by incorporating new and improved materials, components and

-29 -31

manufacturing methods. Therefore, we reserve the right to change

-33 -35

these specifications at any time without notice.

-37 -39

-41

-43

-45 10

HR824 Low Frequency Filter Response
®

60 70 80 90 100

200

10.8″ (27.3 cm)

13.8″ (35.1 cm)

16.8″ (42.5 cm)

HR824 MK2 WEIGHT 34.6 lb (15.7 kg)

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Owner’s Manual 17

HR824 MK2

HR824 MK2 Block Diagram

Vref SIGNAL SENSE
UNBALANCED LINE INPUT
2 1
BALANCED 3 LINE
INPUTS

+15VDC

POWER

MODE

ON SWITCH

AUTO

STANDBY

THERMAL SWITCH

LOW AC VOLTS SENSE

POWER SWITCH (FRONT PANEL)

HIGH = MUTE OFF LOW = MUTE ON

MUTE ON/OFF CONTROL

CLIP SENSE

CLIP SENSE CIRCUIT

HF OUT

HIGH FREQ.

+2 dB

SENSITIVITY

2 dB

SENSITIVE CALLOUS

LF OUT

HF TRANSDUCER THERMAL MODELER
COMPRESSOR
LF TRANSDUCER THERMAL MODELER

MUTE
POWER RING (POWER = WHITE OVERLOAD = RED)

CROSSOVER

HI-FREQUENCY POWER AMPLIFIER

TO CLIP SENSE

HI-FREQ LO-FREQ

HF OUT

HI-FREQUENCY DRIVER
TWEET

MUTE

ACOUSTIC SPACE WHOLE HALF QUARTER
OUTER SPACE
FUSE

MACKIE HR824 MK2 BLOCK DIAGRAM (030207)

TOROIDAL POWER TRANSFORMER

LOW FREQ

37Hz (NORMAL) 47Hz 80Hz

+ MID VDC
+ LO VDC

MOTION DETECTOR
+ HI VDC

LO-FREQUENCY POWER AMPLIFIER

TO CLIP SENSE

LF OUT

LO-FREQUENCY DRIVER

WOOF

MUTE BASS CONTROL SERVO LOOP

SENSE RESISTOR

HR824 MK2

Thefollowingaretrademarksorregistered trademarksofLOUDTechnologiesInc.:TheMackie logo,HRSeries,ZeroEdgeBaffle,andtheRunningMan.
THXandpm3aretrademarksofTHXLtd.whichmay beregisteredinsomejurisdications.Allrightsreserved.
LucasfilmisatrademarkofLucasfilmLtd. Thismanualalsocontainsnamesandmarksofother companieswhichbelongtothoserespectivecompanies, andareherebyacknowledged. HR824MK2designprotectedunderthefollowing patent:DES.387,351
©2007-2014LOUDTechnologiesInc.AllRightsReserved.
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Owner’s Manual

MackieLimitedWarranty
Please keep your sales receipt in a safe place.
This Limited Product Warranty (“Product Warranty”) is provided by LOUD Technologies Inc. (“LOUD”) and is applicable to products purchased in the United States or Canada through a LOUD-authorized reseller or dealer. The Product Warranty will not extend to anyone other than the original purchaser of the product (hereinafter, “Customer,” “you” or “your”).
For products purchased outside the U.S. or Canada, please visit www.mackie.com/warranty to find contact information for your local distributor, and information on any warranty coverage provided by the distributor in your local market.
LOUD warrants to Customer that the product will be free from defects in materials and workmanship under normal use during the Warranty Period. If the product fails to conform to the warranty then LOUD or its authorized service representative will at its option, either repair or replace any such nonconforming product, provided that Customer gives notice of the noncompliance within the Warranty Period to the Company at: www.mackie.com/support or by calling LOUD technical support at 1.800.898.3211 (tollfree in the U.S. and Canada) during normal business hours Pacific Time, excluding weekends or LOUD holidays. Please retain the original dated sales receipt as evidence of the date of purchase. You will need it to obtain any warranty service.
For full terms and conditions, as well as the specific duration of the Warranty for this product, please visit www.mackie.com/warranty.
The Product Warranty, together with your invoice or receipt, and the terms and conditions located at www.mackie.com/warranty constitutes the entire agreement, and supersedes any and all prior agreements between LOUD and Customer related to the subject matter hereof. No amendment, modification or waiver of any of the provisions of this Product Warranty will be valid unless set forth in a written instrument signed by the party to be bound thereby.

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Owner’s Manual 19

16220 Wood-Red Road NE · Woodinville, WA 98072 · USA United States and Canada: 800.898.3211 Europe, Asia, Central and South America: 425.487.4333 Middle East and Africa: 31.20.654.4000 Fax: 425.487.4337 · www.mackie.com E-mail: sales@mackie.com
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Documents / Resources

MACKIE HR824 MK2 High Resolution Active Studio Monitor [pdf] Owner's Manual
HR824 MK2 High Resolution Active Studio Monitor, HR824 MK2, High Resolution Active Studio Monitor, Active Studio Monitor, Studio Monitor

References

User Manual

MACKIE HR824 MK2 High Resolution Active Studio Monitor Owner’s Manual

HR824 MK2 High Resolution Active Studio Monitor

Product Information

Specifications:

Product Usage Instructions

Safety Instructions:

Power Usage:

Audio Settings:

Placement:

Maintenance:

Frequently Asked Questions (FAQ)

Q: Can I use these studio monitors for outdoor events?

Q: How can I troubleshoot if the monitor is not powering
on?

Documents / Resources

References

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