Mackie SRM450v3 - Electrical Connection Standards; XLR and TRS Connector Wiring; Unbalanced Connector Wiring

Owner’s Manual
17
Owner’s Manual
Balanced XLR Input Connector
EachSRMloudspeakerhastwofemaleXLR/TRS/TS
comboinputs.Besurethecablesarewiredper
AES(AudioEngineeringSociety)standards:
Balanced XLR Input Connector
 Pin1–Shield(Ground)
 Pin2–Positive(+orhot)
 Pin3–Negative(–orcold)
Balanced XLR Output Connector
ThereisalsoamaleXLRoutputoneachSRM
loudspeakerlabeled“THRU”.Besurethecablesare
wiredperAES(AudioEngineeringSociety)standards:
Balanced XLR Output Connector
 Pin1–Shield(Ground)
 Pin2–Positive(+orhot)
 Pin3–Negative(–orcold)
SRMloudspeakersmaybedaisy-chainedviathemale
XLRconnectorlabeled“THRU”.Simplyplugthesignal
source(i.e.,mixeroutput)intotheinputjack(s), 
andpatchthatloudspeaker’sTHRUjacktothenext
loudspeaker’sinputjack,andsoon,daisy-chaining
multipleSRMloudspeakers.Seepage7foravisual
representationofdaisy-chaining.
Balanced XLR Input Connector
2
3
1
SHIELD
COLD
HOT
SHIELD
COLD
HOT
3
2
1
Balanced XLR Output Connector
2
1
SHIELD
COLD
HOT
3
SHIELD
COLD
HOT
3
2
1
Balanced 1/4" TRS Connector
TRSstandsforTip-Ring-Sleeve,thethreeconnections
availableonastereo1/4"cable.Thisallowsfora
directconnectiontothechannel1and2inputjacks
onSRMloudspeakers.Besurethecablesarewiredper
AES(AudioEngineeringSociety)standards:
Balanced 1/4" TRS Connector
 Sleeve–Shield(Ground)
 Tip–Positive(+orhot)
 Ring–Negative(–orcold)
Unbalanced 1/4" TS Connector
TSstandsforTip-Sleeve,thetwoconnections
availableonamono1/4"cable.Thisallowsfora
directconnectiontothechannel1and2input
jacksonSRMloudspeakers.Besurethecablesare
wiredperAES(AudioEngineeringSociety)standards:
Unbalanced 1/4" TS Connector
 Sleeve–Shield(Ground)
 Tip–Positive(+orhot)
Unbalanced RCA Connector
RCA-typeplugs(alsoknownasphonoplugs)
andjacksareoftenusedinhomestereoandvideo
equipmentandinmanyotherapplications.RCAplugs
areunbalanced.Connectthesignaltothecenterpost
andtheground(earth)orshieldtothesurrounding
“basket.”BesurethecablesarewiredperAES(Audio
EngineeringSociety)standards:
Unbalanced RCA Connector
 Sleeve–Shield(Ground)
 Tip–Positive(+orhot)
SLEEVE
TIP
SLEEVE
TIP
RING
RING
TIP
SLEEVERING
Balanced 1/4" TRS Connector
SLEEVE
TIP
TIP
SLEEVE
TIP
SLEEVE
Unbalanced 1/4" TS Connector
TIPSLEEVETIPSLEEVE
Unbalanced RCA Connector
Appendix B: Connections