Alltransformerprimariesshouldbeconnectedinparalleltotheoutputoftheamplier.Thesummedtotal
powerratinginwattsoftheselectedtapsettingsforallconnectedloudspeakersmustnotexceedthetotal
outputpowerratingoftheconnectedamplieroutputchannelinwatts.Itisrecommendedthatagenerous
powersafetymargin(minimum3dBheadroom)bemaintainedbetweenthetotalloudspeakerpower
requirementsandtheamplieroutputcapacitytoavoidcontinuousamplieroperationatfullratedoutput.
5.4 Wiring for outdoor applications
Aninputpanelcoverwithrubberwiringgrommetissuppliedforuseinoutdoorapplications.Beforemaking
connections, pass the wire(s) through the rubber grommet. The input panel cover is secured to the cabinet
using the four screws already inserted around the input.
6. Polarity checking
Checkingthepolarityofthewiringbeforethespeakersystemismountedorownwillhelpensuresatisfactory
performance. If you do not have a pulse-based polarity checker, you may check LF units as follows: Connect
twowirestothe+and-terminalsofaPP3(9V)battery.Applythewireconnectedtothepositive(+)terminal
of the battery to the speaker cable leg which you believe to be connected the positive terminal of the speaker
connector; likewise connect the negative (-) terminal of the battery to the negative terminal of the speaker. If
youhavewireditcorrectly,theLFdriveunitwillmoveforward.Atthispoint,connectthepositive(+)speaker
leadtothe+terminalontheamplierandthenegative(-)leadtothe-terminalontheamplier.However,if
the LF driver moves backwards with the battery test, the input connections need to be inverted before
connectingtheamplier.Ifproblemsareencountered,inspectthecablewiring.Notethatdifferentamplier
manufacturersmayutilisedifferentpincongurationsandpolarityconventions;ifyouareusingampliersfrom
morethanonemanufacturer,checkthepolarityattheampliersaswellasattheloudspeakers.
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