Wheelock MX-8 Mixer Specifications download pdf (Page 11)

Thechoiceofwattagetapinthissituationcansimplydependonthenumberofspeakersrequired.Inotherwords,more

speakerstappedat1/4wattcouldbeputonthelinethanspeakerstappedat1/2watt.It’sjustthatyouhavetocrankup

theamplieralittlemoreandsacricesomeheadroom.Inanycase,aswewillalsoseeabitlater,the amplier size

is determined by the sum total of the wattage taps, not the number of speakers.

What about the pattern of the layout?

The“squarepattern”layoutusesall12speakersandisusedbecauseoflayoutsimplicity.The“staggerpattern”,because

it results in a tighter edge-to-edge pattern, gives somewhat better coverage and actually uses less speakers. In this

example, 11 speakers are used.

Square Pattern Stagger Pattern

Wall Mount Speakers

If the ceiling is too high or not accessible, then wall mount speakers can be used.

Coverage

Thesespeakerswillproject30 feetintotheroom,sothesquarefootcoverageis20feetx30feet=600sqfeet. Power

settings foreitherawallmountedcentralampliedspeakerorawallmountedselfampliedspeakershouldbesimilar

to that of the ceiling mount speakers previously described. Designfor1watt(70voltsystem)or105mA(selfamplied)

perspeaker;use initial settingsof1/2wattor1/2powerforbestsystemexibilityandheadroom.

How many speakers?

Onceagain,dividethesquarefootageoftheroombythesquarefootcoverageofonespeaker.Iftheroomiswider

than 30 feet, a second row of speakers can be used. The preferred method is shown below, where all speakers are

aimedinthesamedirection.Thisrequirestheroomtohavepillarsorpoststowhichthesecondrowofspeakerscan

bemounted.Wherepossible,astaggerpatternispreferred.Themorecommonarrangement(duetolackofpillarsor

postsinmostlocations),ishavingthesecondrowofspeakersmountedontheopposingwall.(Asshown)astagger

pattern must be used.

Because of a phenomenon called phase cancellation, NEVER have speakers pointing

directly at each other because the result will be poor sound reproduction.

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Wheelock MX-8 Mixer Specifications Page 11