Mackie 550 Speaker User Manual


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Owner’s Manual
9
Owner’s Manual
SRM Loudspeaker: Rear Panel Features
1. Power Connection
Thisisastandard3-prongIECpowerconnector.
Connectthedetachablepowercord(includedin
thepackagingwiththeloudspeaker)tothepower
receptacle,andplugtheotherendofthepower 
cordintoanACoutlet.
MakesurethattheACpowerismatchedto
theACpowerindicatedontherearpanel
(belowtheIECreceptacle).
Disconnectingtheplug’sgroundpinis
dangerous.Don’tdoit!
2. Power Switch
Pressthetopofthisrockerswitchinwardstoturn
ontheloudspeaker.ThefrontpanelRunningMan
logowillglowwithhappiness...oratleastitwill
iftheloudspeakerispluggedintoasuitablelive
ACmainssupplyandthemainlogoswitch[10]
isdisengaged.
Pressthebottomofthisrockerswitchinwardstoturn
offtheloudspeaker.
Asageneralguide,SRMloudspeakersshould
beturnedonlast,afteranymixerorother
signalsource.Assuch,theyshouldalsobe
turnedoffrst.Thiswillreducethepossibilityofany
turn-onorturn-offthumpsandothernoisesgenerated
byanyupstreamequipmentfromcomingoutofthe
speakers.
3. XLR and 1/4" Combo Inputs
Bothchannelsfeature1/4"Wide-Z
™
inputswith
combojacksthatmayacceptbalanced/unbalancedXLR
and1/4"connections.ThegainrangeoftheWide-Z
inputsmayhandleanythingfromaninstrumentlevelto
ahigh-outputmicsignal.SimplyconnectanXLR,TRS
orTSconnectorintothechannelandadjustthegain
accordingly.
Pleasebeawareofthepositionofthegain
knob[4].
NEVERconnecttheoutputofanamplier
directlytotheinputoftheloudspeaker.
Thiscoulddamagetheinputcircuitry
oftheactiveloudspeaker.
Theyarewiredasfollows,accordingtostandards
speciedbytheAES(AudioEngineeringSociety):
Balanced XLR Input Connector
Pin1–Shield(ground)
Pin2–Positive(+orhot)
Pin3–Negative(–orcold)
2
3
1
SHIELD
COLD
HOT
SHIELD
COLD
HOT
3
2
1
Balanced XLR Input Connector
SIG/OLSIG/OL
POWER CONSUMPTION 200W
1
2
3 5 6
74
8 9 10
11
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