Dual XPA4640 Stereo Amplifier User Manual


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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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