MU1 Software Manual, to be read next to the Hardware Manual - Grimm Audio · 2020. 11. 4. · audio...
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MU1 Software Manual, to be read next to the Hardware Manual Please read this manual before opera3ng the unit! For firmware version v1.2.14
Transcript of MU1 Software Manual, to be read next to the Hardware Manual - Grimm Audio · 2020. 11. 4. · audio...
MU1SoftwareManual,tobereadnexttotheHardwareManualPleasereadthismanualbeforeopera3ngtheunit!
Forfirmwareversionv1.2.14
TableofContents1Introduc7on.......................................................................................................................................32Setup..................................................................................................................................................43RoonLabssetup.................................................................................................................................94Control.............................................................................................................................................17
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1 Introduc3on
ThankyouforpurchasingtheGrimmAudioMU1mediaplayer.Itisdesignedtobethemostsophis7catedandbestsoundingmusicplayeronthemarketandatthesame7meblendseamlessinyourdailymusicplayingrou7ne.CoreoftheMU1technologyisanFPGAprocessorboardofourowndesignthatoffersthehighestqualityoversamplingandde-jiQeringpossible.Theamountofworkandknowledgethatwentintothisprojectcanhardlybeoveres7mated.Allthiseffortresultedinanelegantboxofminimalis7cdesignthathumblystepsoutofthewayforthemusic.Wearegratefulthatwewereallowedtodevelopthisgemandwishyoumanypleasurablehoursoflistening.
Inthismanualyouwillfindallinforma7onrelatedtothesoTwareofyourMU1.SincethissoTwareisregularlyupdated,wedecidedtoofferthisMU1soTwaremanualonlyasdownload.YourMU1wasshippedwithaprintedMU1hardwaremanual.Pleasereaditcarefullyforyourownsafety.YoucanalsodownloadapdfoftheMU1hardwaremanualontheMU1pageofourwebsitegrimmaudio.com.
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2 Setup
Interfacedescrip3on
Front:
OntheleTyoufindtheMU1ac7vityLEDinthe‘i’oftheGrimmlogo.Thedisplayshowsalluserinforma7on.
TheMU1ac7vityledshowsthecurrentac7vityoftheMU1system.Table1belowshowsthemodi.
Off MU1isofforisupda7ng.1
On MU1isonorboo7ng2
Fadingslowly MU1isinstand-bymode.
Table11Thesystemwillonlyupdatewhentheuserhasmanuallyac7vatedtheupdate.Seechapter“Control”.2Whenthesystemisboo7ngupthedisplaywillshowananima7on.
Thedisplayshowsinforma7onaboutthesystemdependingonitsstate:
• Systemoff:displayisblack,noinforma7on.• Systeminstand-by:displayisblack,noinforma7on.• Systemisboo7ngup:bootanima7onisrunning,aTerboo7ngthewelcomepictureis
shownun7lthesoTwareisready.• Systemon:thisstatehasdifferentmenuswhereinforma7oncanbeshownandse`ngscan
beadjusted.Thesese`ngsaredescribedinthechapter“Control”.• Systemshu`ngdown:displayisshowingshutdownanima7on,withdimmedbacklight.It
goestoblackwhensystemisfullyshutdown.
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Rear:
Ontherearofthesystemvariouscableconnec7onsandthemainpowerswitchcanbefound.FromrighttoleT:themainspowerconnector,asmallmainspowerswitch,a3.5mmsocketforanexternalIRremotesensor,anethernetnetworkinput,2USBconnec7onsforexternalstorage,anFMcableinput,threedigitalaudioinputs,threedigitalaudiooutputs(twogenericAES3andoneGrimmLS1).Inthefollowingsec7ontheseconnec7onsaredescribedinmoredetail.
1.Themainspowersocket(standardIEC60320model).IncaseyourcountryhasanEU,USorUKtypewalloutlet,yourMU1wasshippedwiththecorrespondingpowercord.Otherwise,pleaseconsultyourdealer.
2.Themainspowerswitch.Thisisasmallrecessedswitch.Ifthesystemisoffandthepowercordisconnected,presstheswitchonceusingyourfingernailtobootthesystem.Ifthesystemison,presstheswitchoncetoshutdownthesystem.
Hint:ThepowerswitchdoesnotrespondwhiletheMU1isupda3ng.
3.Minijackinputforinfraredremotesensor.[Tobeimplemented]
4.Ethernetinput.ConnectyourwiredlocalnetworktotheMU1usingthisRJ45connector.ThecabletypeshouldbeatleastCAT5etoensurethatlossofnetworkdatapacketsisminimized.Pleaseusehighqualitycablesintendedforusewithcomputersystemsandavoidcableswithclaimedspecialquali7esforaudio.
5.DualUSBinput.ThesetwogeneralpurposeUSB3.0connectorsmaybeusedforconnec7nganexternalUSBdrive(flashdrive,SSDorHDD)forextendingthediskspaceoftheMU1system.Youmayplaymusicfilesfromthisdrive.TheMU1supportsthefollowingfilesystems:FAT32,NTFS,HFS+,exFAT,EXT2andEXT4.WhenaUSBdeviceispluggedin,itwillbeautoma7callymountedinthesystem.SinceUSBdrivesaremountedin‘readonlymode’,itisnotnecessaryto‘safelyremove’theUSBdevicefromthesystem,thedeviceisunmountedautoma7cally.
ThemountedfoldercanbefoundthroughtheRoonstoragese`ngs.GototheRoonSeBngs→StorageandpressthebuQon“+AddFolder”.
TheUSBdiskshouldappearinthemenuontheleT.Thenamewillconsistofthenameoftheusbdiskwiththepreface“usbdisk-”.Ifyoudon’tseeithere,gototherootdirectory“/”andopen“mnt”.Hereyouwillfind“usbdisk-name”.Selectthisfoldertoaddit.
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6.AnalogFMinput.[Tobeimplemented]
7.Digitalaudioinputs.TheMU1hasthreedigitalinputsontheback.Thesesourcescanbeselectedwiththemaincontroldial.Readchapter“Control”forinstruc7onsabouthowtodothis.TheselectedsourceisroutedviatheFPGAforoversamplingandde-jiQeringandbenefitsfromMU1’shighperformancerendering.
a)S/PDIFdigitalinput:orangeRCAconnector,digitalinputforS/PDIFsources.
b)Op7caldigitalinput:blackToslinkconnector,digitalinputforS/PDIFsources.
c)AES3digitalinput:XLRconnector,digitalinputforAES3sources.
8.Digitalaudiooutputs.Therearethreedigitaloutputs.Thesecanbeconfiguredasstereooutputsthatcarrythesameaudiodataorassixindividualoutputsforsurroundplayback(tobeimplemented).FromrighttoleT:
a)LS1output:aproprietaryconnec7ontotheLS1playbacksystem,carryingbothaudiodataandcontroldata.Thecableforthisconnec7onissuppliedwiththeLS1system.Connectthiscabletothe“Controlin”inputoftheLS1.
Warning:Donotconnectanetworkcabletothisconnec3on!AlthoughanormalRJ45connectorfits,thisoutputmayonlybeusedforLS1controlconnec3on.GrimmAudioisnotliablefordamagetoalocalnetworksystemasaresultofincorrectwiringbytheuser.
b)Digitaloutput1:transformerbalancedXLR3digitaloutputforuseinasurroundLS1systemorconnec7ontoathird-partyDAC.
c)Digitaloutput2:transformerbalancedXLR3digitaloutputforuseinasurroundLS1systemorconnec7ontoathird-partyDAC.
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Top:
ThetopoftheMU1carriesthemaincontrolknob.ItisusedforalluserinputoftheMU1viaturningandpressing.Dependingonthestateofthesystemandthemenuselec7onthisknobchangesfunc7onality.
ThesystemwillboottotheMusicView.Theuseofthemaincontrolinthisstateis:
• Volumeup(turnright)
• Volumedown(turnleT)
• Pause/mute(shortpress)
• Entermenu(longpress)
• Pressandturnselectstheinput.
Ashortpressisshorterthan2seconds,alongpressislongerthan2seconds.Howtoenterandleavemenusisdescribedinthe“Control”chapter.
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3 RoonLabssetupGrimmAudioselectedRoonLabsfortheuserinterfaceandaudioengineforfileandstreamplaybackontheMU1(analterna7veUIandenginewillbeaddedlater).InouropinionRoonoffersthebestHigh-Enduserexperiencetodate,arealmusthave.BothRoonCoreandRoonEndPointarepre-installed,sonoothercomputerisneeded.PleasemarkthatRoonLabsisapaidsubscrip7onsoyouneedtoenteryouraccountdetailsviatheRoonapp.RoonLabsupportsTidalandQobuzlosslessmusicstreamingservices.Theseareseparatelypaidsubscrip7ons.YouneedtoenteryouraccountdetailsoftheseservicesviatheRooninterface.
Opera7ngtheRoonsystemintheMU1isiden7caltothatofanyotherRoonequippedsystem.FirstyouneedtoinstalltheRoonremotecontrolsoTwareforatablet,smartphone,PCorMactogetaccesstotheRoonCoreserverintheMU1.PleasevisittheappstoreofyourOSmanufacturer,orusethislink:hQps://roonlabs.com/downloads.html.Forgeneralopera7onalguidelinesoftheuserinterface,wereferyoutotheRoonLabsdocumenta7on:hQps://roonlabs.com/support.html.TheMU1canperformallprocessesthatRoonoffers,butwerecommendtousetheMU1FPGAoversamplinganddownsamplingalgorithmsinsteadoftheRoonofferings,anduseRoonjustforaudioplayback.Roonisacapablemul7roomsystem.IfyoulikeyoucanusetheRoonCoreintheMU1tostreammusictootherRoonEndpointsinyournetwork(forinstanceasysteminthekitchen).Pleasenotethattheoversamplingandde-jiQeringquali7esoftheFPGAintheMU1canonlybeenjoyedwiththedigitalaudiooutputsontheMU1.
TheMU1canplayallfileformatsthatRoonsupports,suchaswavandflac,andhasna7vesupportofPCMformatsupto8xthebaserate(8FSor“DXD”)andofDSDformatsuptoDSD256.TheFPGAprocessorintheMU1canupsample1FSand2FSsourcesto4FSanddownsample8FSandDSDformatsto4FS.
Enablingtrackinforma3onontheMU1display
ToshowthesongthatcurrentlyplaysontheMU1display,youneedtoenabletheMU1soTwaretocommunicatewiththeRoonLabssoTware.Thisisfacilitatedbya‘RoonExtension’.SinceRoonExtensionscanonlybeenabledbytheaccountowneroftheRoonsoTware,youneedtoperformthisstepyourself.Pleaseconnectatablet,smartphone,PCorMactothesamenetworkastheMU1andinstallthe‘Roon’(not‘RoonServer’)remotecontrolsoTware:hQps://roonlabs.com/downloads.html.Next,pleasefollowthefollowingsteps:
• SwitchontheMU1forthefirst7me.
• StartRoononthetabletorPC/MacsoTware,waitun7ltheMU1popsupasadeviceandselectit.
• LoginwithyourRoonaccount.
• Gotothese`ngsmenuandselectthetab‘Extensions’.
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• AddtheGrimmAudioextensiontoyourMU1byclickingtheEnablebuQoninthemenu.Theextensionwillcontainapartoftheserialnumberasshownintheimagebelow.
VolumecontroloftheLS1DSPandtheFPGAvolumecontrolofselecteddigitaloutputsshouldnowworkviaboththeRoonappandtheMU1maincontrol.Addi7onallyyouwillseeinforma7onaboutthecurrentlyplayingtrackinthedisplayandaprogressbaroftherunningtrack.
VolumeseWngs
Weputinasafetylimitonthevolumecontrol.WheneveryouturntheMU1maincontrolortheRoonappvolumefaderquicklytothemaximumposi7on,thevolumewilljumpbacktothelowestlevel(thefaderwillstayatthemaxposi7onthough).Thiswillprotectyourequipmentwhenthecontrolsaresettomaxbyaccident.Ifthishappenstoyou,becarefultopausethemusicfirstbeforetouchingthefader,sinceitcans7llbecomeloudwhentouchingthefader.
Asanalterna7ve,werecommendtosetacomfortlimitfortheRoonfaderinthedevicesetupsoyoucannotaccidentallysetthevolumeveryloudbyslidingthevolumebartoofartotheright.Incaseyoudoliketoplaylouderthanthelimit,youcans7llpressthe+or–buQonsintheRooninterfacetoincreaseordecreasethevolumeoftheLS1playbacksystem.Tosetthecomfortlimit,pleasebrowsetotheAudiotaboftheRoonse`ngs,tapthe‘cog-wheel’configura7onlogoontherightoftheGAMU1deviceandselect‘DeviceSetup’,asshowninthepicturebelow.
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Hereyouselect“Setvolumelimits”andsetitto‘64’whichcorrespondstoanacceptablecomfortlevelformostmusic.IfyourtastemainlycoverssoTlyrecordedtracks,youmaydecidetosetahigherlevel.
Warning!IntheDevicesetupmenuyoucanalsochangethevolumeseWngstypeofRoon.Youshouldalwayskeepthe“VolumeControl”setto“Devicevolume”.Switchingto“DSPVolume”or“FixedVolume”willgiveproblemswithvolumecontrol,thatcanjumptomaximum(weaddedasafetybrakeforthat,buts7ll).Ifyouaccidentallychangedthese`ngsyoucangetoutofthisstatebypressingthe“LoadDefaults”buQonin‘DeviceSetup’.Thiswillrestorethesystemtothenormalstate.Moreinforma7oncanbefoundhere:hQps://kb.roonlabs.com/Audio_Setup_BasicsinchapterVolumeControlMode.Thispagestatesaboutthevolumese`ngs:“It'stheretosolveproblems-ifyoudon'thaveproblems,youdon'tneedit!”
DSDplaybackseWng
WhileyouareintheDeviceSetuppage,pleasesetthe“DSDplaybackstrategy”to“Na7ve”ifitisnotalready.TheMU1FPGAprocessorhasasuperiorqualityDSDdownsamplerandwerecommendtousethisfeaturetoplayDSDfilestotheLS1systemorotherPCMDAC’s.Youmayalsoopenthe“advanced”partofthiswindowandcheckwhetherthemaxsamplerate(DSD)issetto“uptoDSD256”andthemaxsamplerate(PCM)issetto“upto384kHz”.
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Backgroundanalysisspeed
IntheLibrarypageoftheSe`ngsmenuRoonoffersseveralop7onsforthe‘BackgroundAudioAnalysisSpeed’.Werecommendtosetthisto“ThroQled”andnottooneofthe“Fast”op7ons.ThismakessuremostoftheprocessingpoweroftheCPUisdedicatedtoaudioplayback.Youmayalsosetitto“Off”,Roonwillthencalculatethewaveformofanewfileontheflywhenitisplayed.
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UpdatesofRoonso]ware
RoonLabsoffersfrequentupdatestoboththeRoonCoreappintheMU1andtheRoonRemoteappinyourtabletorsmartphone.Updatesonyourphone/tabletareusuallyinstalledautoma7cally.IfaRoonCoreupdateisavailabletheRoonRemoteappwillinformyouaboutthat.YouarepermiQedtostartaRoonCoreupdateprocessintheMU1fromtheRoonRemotephone/tabletapp,butwearenotliablefortheimpactofproblemsthatmayoccur.Ofcoursewewillinthatcaseoffersupporttohelpyousolvetheproblem,wherepossible.
KnownissueswithRoonontheMU1
#1Hamperedplaybackwhenanalysingalargecatalog.
Whenyouaddafolderwithlotsofalbums,Roonwillanalysethefiles,downloadartworketc.Itwillalsodoananalysisoftheaudiodatatostorewaveformsthatareshownintheuserinterfaceandtostoretheaverageloudnessofthetrackforloudnessnormaliza7onuse.Duringtheini7alsetup,Roon’slaborcancausethesystemtobelessresponsive.Althoughitshouldbepossible,werecommendtonotusethesystemformusicplaybackwhileRoonrunsthisanalysisforthefirst7meonalargesetofalbums.Ifyouletitrunovernight,itisusuallyfinishedthenextday.
Whenyouaddafewalbumsonly,playbackisnothamperedandthiswillnotaffecttheplayback.Neverthelesswerecommendtousethe“ThroQled”modefortheanalysistokeeptheCPUloadlow.ThiscanbeselectedintheRoonse`ngs,seechapter“Backgroundanalysisspeed”.ConsulttheRoonmanualformoreinforma7on.
#2SoTglitchesinDSDalbumplayback.
PleasemarkthatwhenplayingalbumsinDSDformat,theendandstartofthefilesarenotreproduced100%gaplessbydesign,whichmeansthatasoTglitchcanbeheardatthestartofanewtrack.ThisglitchisinthemasterfilesandcannotbesolvedintheMU1orRoonsoTware.Also,ashortmomentaTerplaybackofaDSDfilehasstopped,Roonwillswitchtoa‘silent’PCMstreamandthisalsocausesasoTglitch.
#3AddingtherootsystemfoldertoRoon.
Whenaddingtherootdirectoryor“/”inthestoragese`ngsofRoon,problemsmayoccur.RoontriestoindextheOSfilesystemmakingitslowandinsomecasesmightevenmakeRooncrash.Insteadofaddingtherootdirectory,pleaseaddthepropermusicfoldersasexplainedinthenextchapter.
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Internaldisk
TheMU1op7onallyhasaninternaldiskformusicfiles.Addingmusictothefoldersofthisdriveisdoneviathenetwork,howtodothisisdescribedbelowforWindowsandMac-OS.
Firstofall,openthehelppageoftheMU1menu(seechapter“Control”)andnotethehostnameandIP-address.
Windowsusers:
Note:NotallWindowscomputerscanusethehostnameforfindinganinternaldiskinthenetwork.Thisisbecause“mDNS”isnotna3velysupportedbyWindows.However,onmanyWindowscomputerssoUwarehasbeeninstalledthataddedsupportforthisprotocolandthereforeweadvicetofirsttrytousethehostnameandifthisdoesn’twork,usetheIPaddress.
1. OpentheFileExplorer(thisisdonebyopeningarandomfolder).
2. Enter‘\\“hostname”’intheaddressbarasshownintheimagebelow.
Note:Ifyoudonothave“mDNS”thisdoesn’twork.Usetheip-address:‘\\“ip-address”’
3. TheinternaldiskisnowshownintheFileExplorer.Youcannowadd,deleteandmovemusictotheMU1internaldiskfromyourWindowscomputer.
Tip:Makeashortcuttothisfoldersoyoucaneasilyfinditinsteadoftypinginthehostname.
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Macusers:
ThesharedfoldercanbefoundintheFinder,intheleThandcolumnunder“Shared”.
ATerselec7ngthisfolder,youcanadd,deleteandmovemusicherefromyourMac.Pleasemindto‘eject’themountedfolderbeforedisconnec7ngfromthenetwork(forinstancewithalaptop).
IftheMU1doesnotshowupintheSharedsec7on,press⌘-KtoopentheConnecttoServerwindow.EnterthehostnameandpressConnect.ThehostnameofyourMU1isindicatedonthesecondpageoftheMU1menu,seeMenuViewinchapter7ofthismanual.Connectas“guest”totheMusicsharefolder.Intheunlikelyeventthatconnec7ngtothehostnamedoesnotwork,pleaseentertheIPaddressofyourMU1,whichisfoundonthesamemenupageoftheMU1.
Note:Ontheinternaldiskyouwillfindadirectorylost+found,youcanignoreordeletethisfolder.
Tip:AUermoun3ngyoucanmakeabackupofthemusicthatisstoredontheMU1internaldriveviayourWindowsorMaccomputerbyusingyourfavouritebackupapplica3on.
HowtoaddtheinternaldisktoRoonToaddtheinternaldisktotheRooncatalog,firstremoveanymemorys7ckorUSBdrivethatyouconnectedtoaUSBreceptoronthebackoftheMU1.NextopentheStoragese`ngsinRoonandclickon“Addfolder”.TheinternaldiskshouldshowupinthemenuontheleTas“HEAP”.SelectthisfoldertoaddthedisktoRoonasmusicfolder.
IfthediskdoesnotappearasHEAPyoumustadditmanually.PleasenotethattheprocedureforthisisdependentontheserialnumberofyourMU1.Forserialnumbersstar7ngwith13.0.001.xxxthelabelissda1.Forserialnumbersstar7ngwith13.0.002.xxxthelabelissdb1.
Clickon“Addfolder”andgototherootdirectory“/”,open“mnt”andchoose“sdx1”(thenameoftheinternalSSDdrive,dependingontheserialnumber).Yourmusicfoldersareonsda1orsdb1andwillnowbeadded.
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Tip:Roonwillautoma3callyappendmusicthatyoulateraddtoyourmusicfolder.
SelecttheHEAPdriveifitisavailable.
Selectsda1orsdb1(dependingonserialnumber,seeabove)in“/mnt/”iftheHEAPdriveisnotavailable.
RoondatabaseaccessIncaseyouencounteraproblemwiththeRoonsoTwareandconsultwithRoonSupport,theymayaskyoutoview,copy,renameorresetyourRoondatabase.Thedatabasefoldercontainsallse`ngs,logfilesanddatabaseitems.TheMU1mountsthisfolderinthenetworkunderthesharename“roondata”,anditispasswordprotectedtopreventaccidentallyrese`ngthedatabase.Thecreden7alsareasfollows:Username:mu1-user;Password:mu1-pass.HowtomountthisinternaldiskinyourPCorMacisexplainedinthechapterInternaldiskabove.
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4 ControlThischapterdescribestheusermenusandse`ngsoftheMU1.
MusicView
Func7onofthemaincontrolknob:
• TurnleTforloweringvolume.
• Turnrightforincreasingthevolume.
• Shortpresspausesorstartsplayback.
• Longpressentersthese`ngsmenu.
• Pressandturnselectstheinput.
Ashortpressisshorterthan2seconds,alongpressislongerthan2seconds.
BelowisanimageofthescreenyougetwhentheMU1isfullybootedandthereisnoRoonremoteconnectedyet.
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WhenaRoonremotesuchasatabletisconnectedtotheMU1RoonCoreandmusicisplaying,thetrackinforma7onandprogressbarisshownasinthepicturebelow.
InMusicView,thedisplayoffersthefollowinginforma7on:
• Samplerateandformat1
• CurrentusersetvolumeindB
• MismatchvolumeindB2
• Streamerservice3
• Ar7st
• Song7tle
• Albumname
• Progressbar
• Current7mestamp
• Tracklength
1Thisistheindicatedfileorstreaminforma7onbyRoon.TheoutputoftheMU1mayrunatahighersampleratebecauseoftheop7onalupsamplingintheFPGAoftheMU1.
2Themismatchshowsthedifferencebetweentheusersetvolumeandtheactualvolume,forinstancewhenloudnessnormaliza7on(tobeimplemented)affectsthefilevolume.Italsoindicatesa-10dBaQenua7onwhenpreviewingasource.
3AtthemomentonlyRoonissupported.
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Whenthereisnoaudioplayingandthequeueisempty,theprogressbarwillnotbeshown.
WhenturningtheMU1maincontrolknob,thevolumechangesandthetrackprogressbarattheboQomistemporarilyreplacedbyabarthatindicatesthecurrentvolumese`ng.
IfanLS1isconnected,theMU1willsendvolumecontroldatatotheDSPoftheLS1viaitsproprietarycat5cable.Ifvolumecontrolisac7vatedforoneormoredigitaloutputs,theFPGAchipperformsavolumeaQenua7onathighprecisionfortheseoutput(s).See‘Se`ngsmenu[3/5]’forselec7ngvolumecontrolonthedigitaloutputs.
MarkthatvolumecontrolisdisabledwhenvolumecontrolonthedigitaloutputsisturnedoffandnoLS1isconnected,orwhenDoPisturnedon(see‘Se`ngsmenu3/5’forinforma7onaboutDoP).
Alsonotethattheusersetvolumeindica7oninthetoprightcornerhasamaxlevelof+23.5dBwhenanLS1isconnectedand0dBwhennoLS1isconnected.IntheLS1case,+23.5dBcorrespondsto“100”onthevolumesliderintheRoonapp.Youwouldnormallyneverreachthislevel,itshouldonlybeusedformusicwithverylowaverageloudness.Yournormallevelwillbearound0dBorevenlower.ForLS1users,this0dBlevelisadjustedtothetradi7onalacous7creferenceplaybacklevelinmasteringstudiosandlevelsabove+8dBwilladdposi7vegainintheLS1DSP.
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Foruserswhoconnectedathird-partyDACtodigitaloutput1or2andhavenoLS1connected,thescaleautoma7callychangesto0dBmax,whichreadsas“100”intheRoonapp.
Sourceselec3onBypressing,holdingdownandthenrota7ngthemainknobyouenterthesourceselec7onmenu.Hereyoucanselectsources.Toleavethismenujustreleasethemainknobwhenthedesiredinputisselected.
DependingonwhetheranLS1isconnectedthereare2or3sourcecategoriesvisibleandeachhasoneormoreinputs.Thelistbelowshowseachcategoryandtheiravailableinputs:
• LS1:
◦ LS1Analogue
◦ LS1Digital1
• Streamer:
◦ Roon
• Digitalin:
◦ AES-XLR
◦ AES-RCA
◦ Toslink
Byturningthemainknob(whileholdingitdown)thedifferentsourcesareselected.Ifyou‘hover’overacertaininputthisinputwillbeselectedinpreviewmodeaTer1second,thismeansthatyoucanlistentotheselectedsource(at10dBlowervolumethanthecurrentse`ng)tocheckifthemusiconthisinputistoyourtaste.Whenreleasingthemainknobtheselectedinputisconfirmedandthevolumereturnstothenormalse`ng.
Note:LS1usersmayno3ceashortglitchwhenaudi3oningtheToslinkinput.TheToslinkinputisdesignateda‘LS1low-latency’input.ThisbecauseitismostoUenusedforTVaudio,andlowerlatencyoffersbeaersynchronisa3onwiththevideo.TheLS1’sstandardphaselinearcrossoverhas
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40mslatencyforathreewaysystem,andfortheMU1Toslinkinputthisisautoma3callychangedtoatradi3onalcrossoverwithalmostnolatency.Thischangemaycauseashortglitchsound.PleaserefertotheLS1manualformoreinforma3onaboutitslowlatencymode.
TheMU1willremembertheselectedsourcewhenshu`ngdownthesystem.WhenyoupoweruptheMU1itwilltrytoselectthismemorisedsource.IfitwasasourceontheLS1(AnalogorDigital)thissourcewillbeselectedassoonasyourLS1isdetected.NotethatifyouoperatetheMU1beforetheLS1isdetected,theMU1willautoma7callyfall-backtothe‘Roon’sourceselec7on.
WhenthereisnoLS1connected,thesourceselec7onmenuwilllookliketheimagebelow.MarkthatinthispicturetheMU1doesnotdetectasignalonthedigitalXLRinputand“NoSignal”isshowntopleT.Whenthereisasignalthereceivedsamplerateisindicatedhere.
Note:WhenyouselectanLS1orDigitalInsource,theMU1willautoma3callypauseRoon.Markthatinthiscaseitiss3llpossibletostartRoonplaybackintheRoonApp.Thisisnotanintendedusecase,sopleasemindthefollowing:ifyouselectedanLS1input,RoonplaybackwillbecomeaudibleonDigitalout1and2.IncaseyouconnectedaDACtooneoftheseoutputsyouwillhearmusicbutthetrackinforma3onisnotshownonthedisplay.IfyouselectedaDigitalInsource,RoonwillnotplayproperlysincetheFPGAboarddoesnotrequestaudiodatafromtheinternalPCinthismode.AsaresultRoongetsconfusedandjumpstothenexttrackintheplaylistatirregularpace.TherewillbenodamagedonetothesystembutwerecommendtoonlystartRoonplaybackintheAppwhenRoonisselectedasasource.
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MenuViewBypressingandholdingthemaincontrolknobfor2secondsorlonger,theMU1displayentersthe‘MenuView’mode.
Se$ngsmenu[1/5]:Standby
InthisfirstmenuyoucanputtheMU1instandbymode.
• Turnrighttogotothesecondmenu.
• Ashortpress(‘confirm’)willputtheMU1instand-bymode.
◦ WhentheMU1isinstand-byyoucansimplypressorturnthemaincontrolknobtoini7atestart-upofthesystem.
• WithalongpressyouwillexitthemenuandgobacktotheMusicView.
Wheninstand-bythepowerconsump7ondecreasesandthescreenisturnedoffaTerashortanima7on.Theinternalelectronicsaremostlyshutdown,butsomeofits7llfunc7ons.Ifyouliketocompletelyturnoffthesystem,switchoffthedevicewiththesmallmainspowerbuQonontherearofthedevice.AlwaysturnoffthesystembeforeunpluggingthepowercordtopreventdamagetoyourMU1computersystem!
Hint:ThewhiteLEDonthefrontindicatesifthedeviceisinstand-by(LED‘breathes’)oriftheMU1isshutdown(LEDoff).
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Se$ngsmenu[2/5]:Help
ThisHelpmenushowsthepictogramsthatareusedintheMU1foropera7ngthemainknob.AttheboQomofthescreenthecurrentnetworkinforma7onisshown.TheindicatedhostnamedependsontheserialnumberofyourMU1.IftheIPaddressshows‘unknown’,thereisnonetworkconnec7onandinthatcasetheMU1cannotbefoundbytheRoonAppinyourtabletorsmartphone.Pleasecheckthenetworkconnec7onofyourMU1.
• TurnleTtogotothefirstmenu,turnrighttogotothethirdmenu.
• WithalongpressyouwillexitthemenuandgobacktotheMusicView.
Se$ngsmenu[3/5]:SeWngs
Inthismenuyoucanchangeopera7onalse`ngsoftheMU1.
• TurnleTtogotothesecondmenu,turnrighttogotothefourthmenu.
• WithalongpressyouwillexitthemenuandgobacktotheMusicView.
• Tochangeanyofthesefourse`ngs,applyashortpressonthemaincontrolknob.Youwillthenenterthemenuandtheselectedop7onwillbehighlighted.Inthenextimageyoucanseethatthefirstop7onishighlighted.
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• Toselectanotherop7on,turnthemainknobun7lthedesiredop7onishighlighted.To
changeit,pressthemainknobbriefly.
• Toleavethismenu,applyalongpressofthemainknob.
Oversampling:Thereare3op7onsfortheoversamplingop7on:Original(nooversampling),2FS(two7mesoversampling)and4FS(four7mesoversampling).
OriginalmeansthattheFPGAdoesnottouchthebitsoftheaudiowhenpossible.MarkthatDSDratesand8FS(DXD)wills7llrequiredownsamplingto4FS,andofcoursethebitswillbealteredifdigitalvolumecontrolisengaged(seethenextmenuitem).
2FSoversamplingmeansthat44.1and48kHzaudiowillbeupsampledto88.2kHzresp.96kHz.4FS,8FSandDSD(uptoDSD128)materialwillbedownsampledtotheserates.Audiothatisalready2FSwillbeleTuntouched.This‘2FS’op7onisintendedtobeusedwithDACsorac7ve‘digital’loudspeakersthatdonotsupport4FSorthatworkbeQerwitha2FSsource.
4FSoversamplingmeansthataudiowillbeupsampledto176.4kHzor192kHz.8FSandDSDmaterialwillbedownsampledtotheserates.Audiothatisalready4FSwillbeleTuntouched.Thisop7onisthedefaultandrecommendedse`ngfortheMU1.
Note:FPGAresamplingto2FSissupporteduptoDSD128.Whenswitchingtothe2FSop3onthelivepreviewofDSD256andhigherwillcausenoiseaslongasyou’reinthemenu.Whenleavingthemenu,Roonwillberestartedtore-configuretheaudiocard.DownsamplingofDSD256fileswillfromthenonbetakencareofbyRoon.Whenchangingfrom2FSto4FS,resamplingRoonisagainrestartedwhenleavingthemenuandDSD256downsamplingintheFPGAisthenagainsupported.
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Toselectyourdesiredse`ng,turntheknobandtheselec7onwillbehighlighted.Doashortpresstoconfirmandexit.Alongpressletsyouleavethemenuwithoutchangingthese`ng.
Volumecontrolondigitalout1and2:Inthismenuyoucanselectwhichdigitaloutputshouldhavedigitalvolumecontrol.VolumecontrolintheMU1offersagreatuserexperiencewhencombinedwithRoon’sremotecontrolcapabili7es.Thisvolumecontrolisperformedatveryhighresolu7onintheMU1’sFPGA.Youmightwanttocompareitsqualitytothena7vevolumecontrolofyourDAC.
VolumecontroloftheLS1outputisalwaysdoneintheLS1andcannotbeswitchedoff.
Hint:whenusingtheMU1asadigitalsourcefora‘digital’loudspeakerthathasonboarddigitalprocessingsuchascrossoverfilters,itisrecommendedtodisabletheMU1volumecontrolsothatthespeakerwillreceivetheaudioatfullwordlength.
• Turnthemainknobtoselectthedigitaloutputofwhichyouwanttochangethese`ng.
• Useashortpresstochangethese`ng,thiscanbeonoroff.
• ToleavethemenupresslongonthemainbuQon,theshownse`ngswillbesaved.
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DoPonAES:“DoP”isbrieffor“DSDoverPCM”.Itisastandardfortranspor7ngDSD64audiooveranAES3orspdifPCMdigitalaudioconnec7on.SomeDACssupportthisformatandtheMU1isabletoforwardDSD64materialunalteredtotheseDACs.MarkthatvolumecontrolisimpossibleonDSDsignals,hencetheDoPop7onisdisabledwhenvolumecontrolondigitalout1or2isturnedon.Toavoidconfusion,volumecontrolonPCMsourcesisdisabledaswellwhenDoPisenabled.SincetheGrimmLS1doesnotsupportDoP,theDoPop7onwillbedisabledwhenanLS1isconnected.IfDoPisturnedoff,DSDmaterialwillbedecimatedtoPCMbytheFPGAwithveryhighresolu7on.
Useashortpresstochangethecurrentse`ng.
LED:ThebrightnessoftheLEDonthefrontoftheMU1canbeturneddownwiththisop7on.Thisinfluencesthebrightnessbothinopera7onandinstand-bymode.
Turnthemainknobclockwisetoincreasethebrightnessandan7-clockwisetodecreasethebrightness.PleasenotethattheLEDcannotbeturnedoffcompletelytofacilitateshowingwhethertheMU1isinopera7on/stand-byorpoweroff.
• Ashortpressconfirmsthecurrentse`ng.
• Toleavethese`ngasitwas,presslong.
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Se$ngsmenu[4/5]:So]wareVersionandUpdate
InthismenuyoucanviewthecurrentsoTwareversionandstartanupdate.TheMU1automa7callychecksforanupdateeveryhourandalsowhenenteringthismenupagefrommenupage[3/5].IftheMU1ischeckingforupdates,thisisshownintheboQomofthismenu.
IfyoursoTwareisuptodatethisisindicatedinthedisplayandtheboQomleTiconisgreyedout.
ThesoTwareversionsofCTRL(ControlsoTware),FPGAandUC(Microcontroller)arealsoshowninthismenu.WhenyouexperienceproblemswithyourMU1wemayaskyoutosendusthisinforma7on.
• TurnleTtogotothethirdmenu,turnrighttogotothefiThmenu.
• WithalongpressyouwillexitthemenuandgobacktotheMusicView.
Theimagebelowisshownwhenthereisanupdateavailable.
Incaseanupdateisavailableanddownloaded,thetext“Updateavailable”isshown.
• Starttheupdatewithashortpress.ATerreadingthewarningmessage,confirmwithanothershortpress.
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Pleasenote:Dependingonthetypeofupdatetheinstallcantakeuptoabout15minutes.Duringthis7meyouwillnotseeinforma7ononthedisplay,thepowerLEDisoffandthepowerbuQononthebackisdisabled.Pleaseremainpa3entanddonotunplugthedevicewhileupda3ngsincethiscausestheupdatetofailandtheprocedurehastostartagainwhenthedeviceispoweredup.
DuringtheupdateprocesstheinternalPCwillshutdownanditwillrebootatleastonce.Whentheupdateiscompletethesystemwillturnbackoninnormalmodeandshowtheupdatestatusbriefly.
UpdatesforthirdpartysoTwarelikeRoonisnotincludedintheMU1soTwareupdate,thisisdoneseparatelyviatheRoonApp.
Note:TheMusicViewdisplaywillshowthetext‘Updateavailable’whenthereisanewupdate.
Se$ngsmenu[5/5]:Support
Inthismenuyoucanac7vateSupportMode.Thisshouldonlybeac7vatedwhenyouhavereportedaproblemwithyourMU1toGrimmAudioandourpeopleaskedyoutoenterSupportMode.InthismodeGrimmAudioengineerscangetremoteaccesstoyourdevicetohelpsolveyourproblem.
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• Ac7vateSupportModewithashortpressonthemaincontrolknob,confirmbyanothershortpress.TheMU1willrebootinSupportModeandacon7nuousanima7onscreenisshownonthedisplay.
• WithalongpressyouwillexitthemenuandgobacktotheMusicView.
Note:WhiletheMU1isinSupportmode,thewhitedotanima3onwillkeeprunningandnootherinforma3onisshown.
Privacystatement:
SupportModerebootstheMU1andestablishesasecureconnec3ontoaGrimmAudioserver.Throughthissecureconnec3onwecanlogintoyourdevice,readlogfilesandchangeseBngs.GrimmAudiowillnotcopyinforma3onfromyourMU1inanyformwithoutyourconsent.GrimmAudiowillnevershareyourdatawithanythirdparty.
Whenyouac7vatedSupportModeandwishtoreturntonormalmode,pressthepowerbuQononthebackoftheMU1toturnoffthedevice,andpressthepowerbuQonagaintoboottheMU1innormalmode.GrimmAudiohasnoaccesstoyourMU1anymoreassoonasyoupoweredoffthedevice.
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©2020,GrimmAudioBV.Allrightsreserved
Reproduc7oninwholeorinpartisprohibited.Specifica7onssubjecttochangewithoutno7ce.
GrimmAudio,Eindhoven,TheNetherlandsGeneralques7ons:[email protected]:[email protected].+31402131562
ForsoTwareversionV1.2.14J.V.andE.G.04/11/20
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