Mackie HD1221 Car Speaker User Manual


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• Poorbassperformancemaybetheresultofbad
ACpower.Seethesectiontitled‘ACPower’on
the previous page for further details.
Poor sound
• Isitloudanddistorted?Makesurethatyou’re
not overdriving a stage in the signal chain.
Verifythatalllevelcontrolsaresetproperly.
• Istheinputconnectorpluggedcompletelyinto
thejack?Besureallconnectionsaresecure.
Noise
• Makesureallconnectionstotheactive
loudspeakers are good and sound.
• Makesurenoneofthesignalcablesarerouted
near AC cables, power transformers, or other
EMI-inducingdevices.
• IstherealightdimmerorotherSCR-based
deviceonthesameACcircuitastheHD1221?
UseanAClinelterorplugtheHD1221intoa
different AC circuit.
Hum
• Trydisconnectingthecableconnectedtothe
maininputjack.Ifthenoisedisappears,it
could be a “ground loop,” rather than a problem
with the HD1221. Try some of the following
troubleshootingideas:
• Usebalancedconnectionsthroughoutyour
system for the best noise rejection.
• Wheneverpossible,plugalltheaudio
equipment’slinecordsintooutletswhichshare
a common ground. The distance between the
outlets and the common ground should be as
short as possible.
Repair
For warranty service, refer to the warranty
informationonpage19.
Non-warranty service for Mackie products is
availableatafactory-authorizedservicecenter.To
locate the nearest service center, visit www.mackie.com,
click“Support”andselect“LocateaServiceCenter.”
ServiceforMackieproductslivingoutsidetheUnited
Statescanbeobtainedthroughlocaldealersor
distributors.
Ifyoudonothaveaccesstoourwebsite,youmaycall
theTechSupportdepartmentat1-800-898-3211,
Monday-Friday, during normal business hours, Pacific
Time,toexplaintheproblem.TechSupportwilltellyou
wherethenearestfactory-authorizedservicecenteris
located in your area.
IfyouthinkyourMackieproducthasaproblem,
please check out the following troubleshooting tips and
doyourbesttoconrmtheproblem.VisittheSupport
sectionofourwebsite(www.mackie.com/support)
where you will find lots of useful information such as
FAQs and other documentation. You may find the answer
to the problem without having to send your Mackie
product away.
Troubleshooting
No power
• Isitpluggedin?MakesuretheACoutletislive
(checkwithatesterorlamp).
• Ournextfavoritequestion:Isthepowerswitch
on?Ifnot,tryturningiton.
• IsthepowerLEDontherearpanelglowing
green?Ifnot,makesuretheACoutletislive.If
so, refer to “No sound” below.
• TheinternalAClinefusemaybeblown.Thisis
notauserserviceablepart.Ifyoususpectthe
AC line fuse is blown, please see the "Repair"
section next.
No sound
• Istheinputlevelcontrolfortheinputsource
turnedallthewaydown?Verifythatallthe
volume controls in the system are properly
adjusted.
• Isthesignalsourceworking?Makesurethe
connecting cables are in good repair and
securely connected at both ends. Make sure the
outputvolume(gain)controlonthemixing
console is turned up sufficiently to drive the
inputs of the speaker.
• MakesurethemixerdoesnothaveaMuteon
oraprocessorloopengaged.Ifyound
somethinglikethis,makesurethevolume/
gain is turned down before disengaging the
offending switch.
• Isthethermalindicatorlitredontherear
panel?Makesurethereisatleastsixinchesof
free space behind the HD1221.
Poor bass performance
• Checkthepolarityoftheconnectionsbetween
the mixer and the loudspeakers. You may have
your positive and negative connections reversed
at one end of one cable, causing one
loudspeaker to be out-of-phase with the other.
Appendix A: Service Information
14
HD1221
HD1221
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