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VLS Series Operation Manual rev 1.1.0

4. Selection of operating mode

AllVLSSeriesmodelscanbeoperatedaseitheralow-impedanceloudspeakerorwithina70/100Vdistributed

system.Theoperationmodeisselectableviaasingleswitchlocatedontherearofthecabinet.



Low-impedancemodeisrecommendedifthecablerunsarerelativelyshortandthenumberofspeakersis

small.If,ontheotherhand,thecablerunsarelongandmorethanafewloudspeakersarerequired,thena

distributedlinesystemisideal.

Whenoperatinginlow-impedancemode,theloudspeakerisabletodeliverawiderfrequencyanddynamic

range.However,ifthecablerunsareexcessivelylong,thenthesoundqualitymaybecompromiseddueto

theincreaseincableresistanceandtheresultingpowerlosses.Tokeeptheloadtotheampliermanageable,

itisalsorecommendedthatasmallnumberofspeakersbeused,thusavoidingcomplexseries/parallel

combinations.

Whenalargenumberofspeakersareinstalledoverlongcableruns,itisrecommendedthatadistributed

(70/100V)systembeused.Fordistributedline,thecableneednothaveaslargeacrosssectionalareaas

forlow-impedance,resultinginsavingsincablecost.Allspeakersareplacedinparallelwiththeoutputofthe

amplier,allowingeasyinstallation.Thewattagetappingscanbeindividuallyadjusted,givingmoreexibility

withinaninstallation.

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