Home Easy M3R User manual

0
M3R 2-CHANNEL MIC PREAMP
September.2nd,2014
Copyright © 2006-2015 AC-AUDIO Australia. All Rights Reserved.
Proudl
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Presentedb
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AC‐AUDIO®
User Manual

1
DETAILED SAFETY INSTRUCTIONS:
Allsafetyandoperationinstructionsofthismanualshouldbereadandadheredtobefore
operation.
RETAIN INSTRUCTIONS:
Pleaseretainallsafetyandoperatinginstructionsforfuturereference.
FOLLOW INSTRUCTIONS:
Alloperationanduserinstructionsshouldbefollowed.
WATER, LIQUID & MOISTURE:
Theapplianceshouldnotbeusednearwater,rainorotherliquids.Makesurethatnoliquidcan
leak,spillorotherwiseseepintotheappliance.
VENTILATION:
Pleaseplacetheappliancesonoobstaclesinterfereorimpedetheflowofairthroughthe
ventilationopenings.
HEAT:
Theapplianceshouldbesituatedawayfromotherheatsourcessuchasheaters,radiators,ovens,
orotherappliancesthatproduceheat.
POWER SOURCE:
Makesureyourapplianceissettothecorrectvoltageforthecountryinwhichitwillbeuse
beforeswitchingthedeviceON.
GROUNDING & POLARIZATION:
Precautionsshouldbetakensothatthegroundingorpolarizationmeansofanapplianceisnot
defeated.
POWER-CORD PROTECTION:
Powersupplycordsshouldberoutedsothattheyarenotlikelytobewalkedon,pinched,
damaged,worn,orrubbedbyanyotherdeviceorobstacle.
WARNING
Toreducetheriskoffireorelectricalshock,donotexposethisappliancetorainor
moisture.Toreducetheriskofelectricalshock,donotremovethecoverorrear
panelofthisunit.Nouserserviceablepartsinside.Pleasereferservicingto
qualifiedpersonnelonly.

2
CLEANING:
Theapplianceshouldbecleanedonlywithalightsoftcloth.Donotuseanydamagingor
corrosiveproductsontheunit.
PERIODS OF INACTIVITY:
Thepowercordoftheapplianceshouldbeunpluggedfromtheoutletwhenleftun‐usedfora
longperiodoftimeorincasealightningstormoccurs.
DAMAGE REQUIRING SERVICE:
Theapplianceshouldbeservicedbyqualifiedservicepersonnelwhen:
•Thepowersupplycordortheplughasbeendamaged;ortherisingthequality.
•Objectshavefallen,orliquidhasbeenspilledintotheappliance;or
•Theappliancehasbeenexposedtorain;or
•Theappliancedoesnotappeartooperatenormallyorexhibitsamarkedchange
inperformance;or
•Theappliancehasbeendropped,ortheenclosuredamaged.
SERVICING:
TheusershouldnotattempttoservicetheappliancebeyondthatisdescribedintheOperating
Instructions.
INSTALLATION
EveryHOMEASYgearwascarefullypackedinthefactoryandthepackagingwasdesignedto
protecttheunitfromroughhandling.Nevertheless,werecommendthatyoucarefullyexamine
thepackaginganditscontentsforanysignsofphysicaldamage,whichmayhaveoccurredin
transit.
Iftheunitisdamaged,pleasedonotreturnittous,butnotifyyourdealerandtheshipping
companyimmediately,otherwiseclaimsfordamageorreplacementmaynotbegranted.
Shippingclaimsmustbemadebytheconsignee.
CAUTION
Theunitscomewitha15VACpowersupplyadaptor.Beforeyou
connectyourunittothemains,pleasemakesurethatyourlocal
voltagematchesthevoltagerequiredbytheunit!

3
HOMEASY M3R 2-Channel Microphone Preamp
Main Description
Ifyouarenotaprofessionalmusicman,oryoudon’twishtohaveabig2U‐rackgeartousein
theproaudiocabinet,HOMEASYM3Rwouldbeyourbestchoiceindeed,asitisatruedesktop
proaudiogear.Althoughsmallerandcheaperthantheotherstandard2‐CHmicpreampsfrom
AC‐AUDIO,suchasG32andG52,M3Rwouldbeamostsuitablepreforquasi‐professionaland
consumerusersatlimitedcost,whichiscompletelyabletoprovidepurepre‐amplifying
performance.
M3Rprovidesindependentphantompowerforeverychannel,aswellasthegaincontrol
from‐20dBto+40dB.Thecompletelymetalliccoverandpanelsgivewonderfulperformance
againstexternalinterference.Furthermore,M3RadoptsNE5532high‐classtransistoroperational
amplifiermodule,whichhashighercapabilitythan4558toacquiremorepure,clear
pre‐amplifying.
Inoneword,HOMEASYM3Rwouldbeyourmostcost‐effectivechoiceforpreampgearatthis
pricinglevel.
Product Features
● 2‐ChannelHigh‐QualityProfessionalMicPreamp
● 2‐ChannelXLRProfessionalBalancedMicInput
● AbsolutelyIndependent48VPhantomPower
● 2‐Channel1/4 ” TRSBalancedOutput
● AdvancedIndependentExternalPowerAdapter
● CompletelyMetallicCoverandPanelsagainstExternalInterference
● Low‐NoiseCircuitDesigntoAcquireHigherS/NRatio
● High‐ClassTransistorOperationalAmplifierModule

4
Specifications
Inputs:
Balancedmicrophoneinput,commontobothchannels.
ConnectorsXLR
Impedance2kOhms

Outputs:
Balancedlineoutputs,+4dBunominallevel.

MaximumLevels:
Micinput+30dBu.
Balancedoutputs+26dBu.

GainRange:
Micinputswitchable0to+40dB

FrequencyResponse:
Allinputs20Hzto22KHz,+0/‐2dB.

HighPassFilter:
‐3dB@90Hz,‐12dBperoctave.

Distortion(THD+N):
Typically0.1%@0dBu,risingto0.3%@+15dBu(1KHz).

HumandNoise:
‐84dBu,22Hz‐22KHz,lineinput@0dBgain.
‐82dBu,22Hz‐22KHz,instrumentinput@+20dBgain.
‐122dBu(EIN)micinputat+60dBgain,22Hz‐22KHz.

Metering:
“Peak”LEDmonitoringwholesignalchain,illuminating6dBbeforeclip.

PowerRequirements:
Externalpoweradapterprovided,230V50Hzor115V60Hzoptional.
50‐60HzPowerconsumption8VA.

Dimensions:
WxHxD:206x45x128mm(8.11”x1.77”x5.04”)

5
Control Panel Instructions
1. The Balanced Input Connectors of Channel A & B
2. The Gain Control Knobs of Channel A & B
3. The Peak Indicator Light
4. The Power Indicator Light
5. The AC Power Supply Connector
BalancedXLRsignalinputsofChannelA&Btoconnectmicrophones,linesignals,
etc.Eachchanneliscompletelyindividual.
Eachchannelfeaturesarotarygaincontrolforvariableadjustmentofthedesired
pre‐amplifierlevel.
Eachchannelhasanindividualpeakindicatorlight,whichindicatesthedistortion.
Twinklecontinuallymeansapproachingthepeak,whilelastingilluminatedmeans
reachingthepeakandthegearoverloaded.
Thepowerindicatorofon/off.

6
6. The Balanced Output Connectors of Channel A & B
7. The Phantom Power Supply
How to use the HOMEASY M3R?
TouseeasilyistheaimofHOMEASYSeriesgears.SoitisquiteeasytouseandoperatetheM3R.
Eachofthetwopre‐amplifierchannelshasitsowninputandoutputandvariablegaincontrol
individually.

Step1SimplyconnectasignalforprocessingtooneoftheXLRbalancedinputsonthefrontof
theM3R.

Step2MakeaconnectionfromthecorrespondingchanneloutputonthefrontoftheM3Rto
yourdesireddestination(Mixer,recorder,etc).

Step3Adjustthevariablegaincontroltothedesiredpre‐amplifiedlevel.Toensureyoudonot
overpre‐amplifyyoursignalapeakclipindicatorlighthasbeenprovidedonthefrontpanelof
theM3Rforeachchannel.Whenilluminated,thislightindicatesthatthepreamplifieris
overloadedandthatdistortionwilloccur.Pleaseturndownthevariablegaincontrolforthe
currentlyselectedchanneluntilthepeakcliplightisnolongerilluminated.Alwaystrustyourears;
thePeakLEDisafterthegaincontrolsoyoucouldactuallydistorttheinputwithaveryhighlevel.
ThejacktoconnecttheACpoweradapterinthepackingbox.
BalancedTRSsignaloutputsofChannel
A&Btoconnecttoamixer,audio
interface,etc.
Eachchannelfeaturesaphantompowersupplyforenabling
thesupplyof48VthroughtheXLRinputconnectorto
powercondensermicrophones.EachSwitchcontrolsone
channelindividually.

7
Warranty
AC‐AUDIOwarrantsthemechanicalandelectroniccomponentsofthisproducttobefreeof
defectsinmaterialandworkmanshipforaperiodofoneyearfromtheoriginaldateofpurchase,
inaccordancewiththewarrantyregulationsdescribedbelow.Ifanydefectsoccurwithinthe
specifiedwarrantyperiodthatarenotcausedbynormalwearorinappropriateuse,AC‐AUDIO
shall,atitssolediscretion,eitherrepairorreplacetheproduct.
Warranty Regulations
1.Warrantyserviceswillbefurnishedonlyiftheproductisaccompaniedbyanoriginalretail
dealer‘sinvoice.AnyproductdeemedeligibleforrepairorreplacementbyAC‐AUDIOunderthe
termsofthiswarrantywillberepairedorreplacedinthebestpossiblemanner.

2.Iftheproductneedstobemodifiedoradaptedinordertocomplywithapplicabletechnicalor
safetystandardsonanationalorlocallevel,inanycountrywhichisnotthecountryforwhichthe
productwasoriginallydevelopedandmanufactured,thismodification/adaptationshallnotbe
consideredadefectinmaterialsorworkmanship.
Thewarrantydoesnotcoveranysuchmodification/adaptation,irrespectiveofwhetheritwas
carriedoutproperlyornot.Underthetermsofthiswarranty,AC‐AUDIOshallnotbeheld
responsibleforanycostresultingfromsuchamodification/adaptation.

3.Freeinspections,maintenance/repairworkandreplacementofpartsareexpresslyexcluded
fromthiswarranty,inparticularifcausedbyinappropriateuse.Likewise,thewarrantydoesnot
coverdefectsofexpendablepartscausedbynormalwearoftheproduct.Expendablepartsare
typicallypots,potentiometers,switchesandsimilarcomponents.

4.Damages/defectscausedbythefollowingconditionsarenotcoveredbythiswarranty:
●  Misuse,neglectorfailuretooperatetheunitincompliancewiththeinstructionsgiveninthe
userorservicemanuals.
●  Connectionoroperationoftheunitinanywaythatdoesnotcomplywiththetechnicalor
safetyregulationsapplicableinthecountrywheretheproductisused.
●  Damages/defectsthatarecausedbyanyotherconditionbeyondthecontrolofAC‐AUDIO.

5.Anyrepaircarriedoutbyunauthorizedpersonnelwillvoidthewarranty.

6.Productswhichdonotmeetthetermsofthiswarrantywillberepairedexclusivelyatthe
buyer‘sexpense.Anyrepairorreplacementshallbereferredtothelocaldealerordistributorof
AC‐AUDIO.

7.Thiswarrantydoesnotexcludeorlimitthebuyer‘sstatutoryrightsprovidedbynationallaw,in
particular,anysuchrightsagainstthesellerthatarisefromalegallyeffectivepurchasecontract.
Theinformationcontainedinthismanualissubjecttochangewithoutnotice.Nopartofthis
manualmaybereproducedortransmittedinanyformorbyanymeans,electronicormechanical,

8
includingphotocopyingandrecordingofanykind,foranypurpose,withouttheexpresswritten
permissionofAC‐AUDIO.
ALLRIGHTSRESERVED©2006‐2015AC‐AUDIO
Alltheinstructions,descriptionsandtechnicalspecificationsaresubjecttochangewithout
priornotice.
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