Mackie SRM1850 - SRM Subwoofer: Rear Panel Features; Power Connection & Switch; XLR Inputs

SRM1850 • SRM2850 Powered Subwoofers
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SRM1850 • SRM2850 Powered Subwoofers
SRM Subwoofer: 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subwoofer)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subwoofer.ThefrontpanelRunningManlogowill
glowwithhappiness...oratleastitwillifthesubwoofer
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subwoofer.
Asageneralguide,themixer(orothersignal
source)shouldbeturnedonrst,SRM
subwoofersnext,andloudspeakerslast. 
Assuch,theloudspeakersshouldalsobeturnedoffrst,
followedbythesubwoofers,thenthemixer.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 Inputs
BalancedXLRfemaleconnectorsareprovidedforthe
leftandrightinputs.Connectthefull-rangeline-level
signalfromthemixer(orothersignalsource)tothese
inputjacks.
Ifyouareconnectingasinglesubwooferoutput,or
LFE(low-frequencyeffects)outputtothesubwoofer,
youmayuseeithertheAorBinputconnector.
NEVERconnecttheoutputofanamplier
directlytotheinputofthesubwoofer. 
Thiscoulddamagetheinputcircuitryofthe
activesubwoofer.
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)
Formoreinformationontheseconnectors,see
AppendixBonpage14.
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3
1
SHIELD
COLD
HOT
SHIELD
COLD
HOT
3
2
1
Balanced XLR Input Connector
SRM
550
SRM
650
VAR
POWER CONSUMPTION 200W
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4 8
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10
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