Mackie SRM450v3 - Loudspeaker Placement Strategies

Owner’s Manual
13
Owner’s Manual
Placement
WARNING:Installationshouldonlybedone
byanexperiencedtechnician.Improper
installationmayresultindamagetothe
equipment,injuryordeath.Makesurethatthe
loudspeakerisinstalledinastableandsecureway
inordertoavoidanyconditionsthatmaybedangerous
forpersonsorstructures.
SRMv3loudspeakersaredesignedtositontheoor
orstageasthemainPAorasmonitors.Theymayalso
bepole-mountedviathebuilt-insocketonthebottom
ofthecabinet.Besurethepoleiscapableofsupporting
theweightoftheloudspeaker.TheSPM200isagreat
optionwhenusingasubwoofer.
Theseloudspeakersmayalsobeownviatheir
integratedypointsasdetailedonpage15.Besure
toreadthePA-A1EyeboltInstallationInstructions,
aswell.
Checktomakesurethatthesupportsurface
(e.g.oor,etc.)hasthenecessarymechanical
characteristicstosupporttheweightofthe
loudspeaker(s).
Whenpole-mountingloudspeakers,besurethatthey
arestabilizedandsecuredfromfallingoverorbeing
accidentallypushedover.Failuretofollowthese
precautionsmayresultindamagetotheequipment,
personalinjury,ordeath.
Aswithanypoweredcomponents,protectthemfrom
moisture.Avoidinstallingtheloudspeakerinplaces
exposedtoharshweatherconditions.Ifyouaresetting
themupoutdoors,makesuretheyareundercoverifyou
expectrain.
SRMv3loudspeakersareNOTdesignedtoarray
horizontally.Ifyoufeelyoumustputtwospeakers
side-by-side,youshouldhaveagoodunderstanding
oftherelationshipbetweenthesplayangle(theangle
betweenthefacingsidesofthecabinets)andfrequency
cancellationeffectsbetweencabinets.
Whentwocabinetsarepositionedside-by-side
suchthattherear-angledfacesoftheenclosures
areparallel,thesplayanglewillbe90º.Thismatches
the90˚horizontalcoveragepatternofeachindividual
loudspeaker;theinterferencebetweenthetwocabinets
willbeminimized,butthetotalcoverageof180˚may
betoowideforsomeapplications.Themidandhigh
frequenciesmayalsobereducedforthoseinthecenter
whoaretooclosetotheloudspeakers.
Reducingthesplayanglewillreducethetotal
horizontalcoverage,butitalsocreatesanareaboth
speakersarecovering.Insteadofaneareldhole,
thiswillcausecomb-lteringeffectsinthefrequency
responseintheoverlappingarea.Thesmallerthesplay
angle,themoreenergywillbedeliveredon-axis,butthe
comb-lteringeffectswillgetworseatthesametime.
Toreiterate,though,westronglysuggest
NOTarrayingtheseloudspeakershorizontally.
Experimentationandexperiencewillhelpyound
therightbalanceforyourapplication.