HOMEASY M3F User manual

0
M3F 4-CHANNEL HEADPHONE AMP.
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 M3F 4-Channel Headphone Amplifier
Main Description
Ifyouarenotaprofessionalmusicman,oryoudon’twishtohaveafullrackgeartousein
theproaudiocabinet,HOMEASYM3Fwouldbeyourbestchoiceindeed,asitisatruedesktop
proaudiogear.Althoughsmallerandcheaperthantheotherstandardphoneampfrom
AC‐AUDIO,suchasH1004,H1008andHA8M,M3Fwouldbeamostsuitableampfor
quasi‐professionalandconsumerusersatlimitedcost,whichiscompletelyabletoprovidepure
amplifyingperformance.
M3Fprovideswonderfulphonesignal’sdistributionandamplifyingforeveryindividualstereo
channel.Thecompletelymetalliccoverandpanelsgivewonderfulperformanceagainstexternal
interference.Furthermore,M3FadoptsNE5532high‐classtransistoroperationalamplifier
module,whichhashighercapabilitythan4558toacquiremorepure,clearamplifying.
Inoneword,HOMEASYM3Fwouldbeyourmostcost‐effectivechoiceforphoneampgearat
thispricinglevel.
Product Features
● 4‐ChannelHigh‐QualityIndividualAmplifier
● IndependentL/RBalancedInputof1/4 ” TRS
● Professional4‐ChannelIndividualStereoOutputofTRS
● AdvancedIndependentExternalPowerAdapter
● CompletelyMetallicCoverandPanelagainstExternalInterference
● Low‐NoiseCircuitDesigntoAcquireHigherS/NRatioandreducetheClippingDistortion
Probability
● High‐ClassTransistorOperationalAmplifierModule

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Specifications
MAININ:
HF‐filtered,servo‐balanced1/4 " TRSconnectors

InputImpedance:
48kOhmsbalanced

Max.Inputlevel:
16dBubalanced

CMRR:
Typically40dB,>55dB@1kHz

MAINOUT:
1/4 " TRSconnectors,balanced

PhonesOutput:
1/4 " TRSconnector(stereo),outputimpedance32Ohms.

Max.OutputPower:
+24dBu(loadimpedance100Ω)

FrequencyResponse:
10Hzto150kHz,+/‐3dB

Noise:
22Hzto22kHz>90dB@0dBu

Dynamicrange:
22Hzto22kHz:110dB

Distortion(THD):
0.006%typ.@+4dBu,1kHz,Gain1

PowerRequirements:
Externalpoweradapterprovided,230V50Hzor115V60Hzoptional.
50‐60Hzpowerconsumption8VA.

Dimensions(HxWxD):
WxHxD:206x45x125mm(8.11”x1.77”x4.92”)

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Control Panel Instructions
1. The Headphone Output Connectors of Channel A/B/C/D
2. The Volume Control Knobs of Channel A/B/C/D
3. The Power Indicator Light
4. The AC Power Supply Connector
UnbalancedTRSoutputsofChannelA/B/C/Dtoconnectheadphones.
Everychannel’svolumeadjustmentisindividual.
Eachchannelfeaturesarotaryvolumecontrolforvariableadjustmentof
thedesiredoutputlevel.
Thepowerindicatorofon/off.
ThejacktoconnecttheACpoweradapterinthepackingbox.

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5. The Balanced Input Connectors
How to use the HOMEASY M3F?
Connectastereo(L&R)programsource(2x1/4 ” InchJacks)totherearoftheM3Fusingoneof
theavailable2xstereoinputpairsontherearpanel.YoucanalsoconnectaMonosignaltothe
inputchannelandsplitthesignalintobothsidesoftheheadphone.

Connectasetofheadphonesusingastereo1/4 Inchcabletoanyoftheheadphoneoutputson
thefrontoftheM3F.Settoanappropriatelevelformonitoring.Owingtothefourindependent
channelsoftheM3F,fourindividualmixesforfourmusicianscanbeachievedwithasingleunit.

Intheapplicationofstudiorecording,youcanconfiguresub‐groups,auxsendsorsingleoutputs
ofyouraudiomixertofeedsignalindependentlytotheM3F.Thisenableseachmusicianto
receiveaspecificconfigurationofinstrumentsoftheirchoiceinthereheadphones.

Note:Iffourheadphoneoutputsarenotenough,youcaninterfaceandlinkanynumberofM3F’s
foradditionaloutputs.
ItisveryeasytochainmultipleM3F’stogether.Useappropriatestereo1/4 Inchjack>toY(2x
mono)cablesandmakeconnectionsfromoneoftheoutputstothestereo(L&R)audioinputson
therearofyoursecondM3F.Thiseffectivelyallowsanaddition3xheadphoneoutputs.Youcan
continuetochainasmanyunitsasyouwantusingthisprocedure.
BalancedTRSstereosignalinputstoconnecttoa
mixer,audiointerfaceetc.Ifyouliketolistentoa
monosignal,youshouldconnectittotheleft
inputjack.

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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