©American Audio® - www.americanaudio.us - 19MXR Instruction Manual Page 13
levelinputdevicesbesurethisswitchisinthe“LINE”position.Alwaysbesuremainpowerisshutoffbefore
changethepositionoftheLineLevelSelectorSwitch.
24. CHANNEL 3: INPUTS - Thetypeofinputmustdirectlyreecttheselectedmodeofthe CHANNEL LINE
LEVEL SELECTOR SWITCH (23). CDplayers,TapeDecksandotherlinelevelinstrumentsmaybeconnected
tothese jacks.The redcoloredRCA jackrepresents theright channelinput andthe whiterepresents the
leftchannelinput.Inputvolumewillbecontrolledbychannelthree fader. Thechannel SOURCE SELECTOR
SWITCH (3) mustbein the“Analog” position,tomonitor anysourceconnected tothesejacks. Turntables
equippedwithMMpickupcartridge(AllDJturntableuseMMpick-upcartridges)maybeconnectedtothese
jacksaslongastheCHANNEL LINE LEVEL SELECTOR SWITCH (23)isinthe“PHONO”position.WhenCD
players,TapeDecksandotherlinelevelinstrumentsareconnectedtothesejackstheCHANNEL LINE LEVEL
SELECTOR SWITCH (23) isin the“LINE” position.Neverconnect linelevel instruments(CD players,tape
decks,etc.) tothese jackswhen theCHANNEL LINE LEVEL SELECTOR SWITCH (23) isin the“PHONO”
position, THIS MAY SERIOUSLY DAMAGE YOUR MIXER! Thered colored RCA jack represents the right
channelinputandthewhiterepresentstheleftchannelinput.Thechannel SOURCE SELECTOR SWITCH (3)
mustbeinthe“Analog”position,tomonitoranysourceconnectedtothesejacks.
25. CHANNEL 4: LINE 4 INPUT JACKS - DO NOT CONNECT TURNTABLES TO THESE JACKS!CDplayers,
TapeDecksandotherlinelevelinstrumentsmaybeconnectedtothesejacks.TheredcoloredRCAjackrep-
resentstherightchannelinputandthewhiterepresentstheleftchannelinput.Inputvolumewillbecontrolled
bychannelone fader. The channel SOURCE SELECTOR SWITCH (3) mustbe inthe“Analog” position,to
monitoranysourceconnectedtothesejacks.
26. RCA MASTER OUTPUTS - TheMasterOutputincludes apair XLR BALANCED JACKS (28) as well as
apairofRCA UnbalancedJacks. TheRCAjackssendalowcurrentunbalancedoutput signal.Thesejacks
shouldonlybeusedfor shortercablerunstosignal processorsorloopingtoanothermixer.Forcableruns
greaterthan15feetusethe XLR BALANCED JACKS (28).
27. BOOTH OUTPUTS -TheVMS4offersasecondaryoutput usuallyusedtomonitoryourmixor toroute
toanoutboardrecordingdevice.Thisoutputhas independentvolumecontrol“Booth”knob.
28. BALANCED XLR MASTER OUTPUT JACKS - TheMasterOutputincludesapairofXLRBalancedjacks
aswell as a pair of RCA UNBALANCED JACKS (26). The 3-pin XLR jacks send a high current balanced
outputsignal.Thesejacks shouldbeused whenyouwillbe drivinganamp orotheraudioequipment with
abalancedinput,orwheneveryouwillberunningasignallinegreaterthan15feet.Always,usethesejacks
wheneverpossible.
29. USB PORT -ConnecttoyourcomputerforMIDI interfaceandUSBinterface(audioinand outs).
30. MAIN POWER SWITCH - Thisisthemain powerON/OFFbutton.Beforemainpoweris applied,be
sureyouhavemadeallconnections tothemixer.Alsobesureyour amplier(s)is(are)tunedoff.Remember
toavoiddamagingpopstothe speakers,themixeristurnedonrst andturnedofflast.
31. AC CONNECTION - Thisconnectoris usedtosupply mainpowertothe unitviathe includeddetach-
ablepowercord.Thepowerconnection usesanI.E.C.typeconnector,useonlythe supplied,polarizedAC
powercord.Useonlya powercordthatmatchesthis typeofconnection.Be suretoonlyconnectthisunit
toapoweroutletthatmatchestheprintedpowerlabelontheunit.Neveruseapowercordwhentheground
pronghasbeen removedorbroken off.Theground prongisused toreducethe riskofelectric alshockin
caseofanelectricalshort.Thiscordisdesignedtotinonedirectiononly.Donotattempttoforceacordif
itdoesnott,besurethecordisbeinginsertedproperly.
FUSE HOLDER – Thishousingstoresthe10ampGMAprotectivefuse.Alwaysreplacewiththeexactsame
typefuse,unlessotherwiseinstructed,byanauthorizedAmericanAudio®servicetechnician.Replacingwith
anyothertypeoffusethanthatoftherecommendedfusewillvoidyourunitwarranty.
19MXR CONTROLS AND FUNCTIONS cont.