Dual XPA4640 User Manual download pdf (Page 7)

XPA SERIES INSTALLATION

Amplifier Connections

Speaker Connections

Connectspeakerwiresobserving

polarity.Theminimumimpedance

load for the XPA2500 and XPA4640

is 2 ohms stereo and 4 ohms

bridged.Useofloadslowerthan

these is not recommended and

may cause amplifier damage.

TheXPA2500andXPA4640can

bewiredforstereo,bridgedor

stereo/bridgedsimultaneous

operation.

Input Signal Connections

Low Level Input (RCA)

Lowlevel(RCA)inputsignalispreferredforbestperformance.Typicaltrunk-mount

amplifierinstallationsrequirea17-20footRCAcable.Mosttrucksandunder-seat

applicationsrequirea6-9footRCAcable.UsingtwistedpairconstructionRCAcableswill

minimize noise.

High Level Input (Speaker Wire)

Highlevelinputsshouldonly

beusedwhenRCAoutputsare

notavailablefromtheheadunit.

Connecttheheadunitspeaker

outputstothehighlevelinput

connectorasshownbelow.The

blackwire(signalreferenceground)

mayormaynotrequireaconnection

tochassisground-dependingon

your particular installation.

Subwoofer (mono)

Typical Bridged Wiring

(4 ohms minimum)

2 Speakers (stereo)

Typical Stereo Wiring

(2 ohms minimum)

CAUTION

Donotusebothlowandhighlevelinputsatthesametime-connectonlyoneortheother.

XPA2500speakerconnectionsshown

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Dual XPA4640 User Manual Page 7