PROTECTION LED COMES ON WHEN THE AMPLIFIER IS POWERED UP.
C heck for sho rts on speak er lead s.
C heck that vo lume c ontrol on the head unit is turne d dow n low.
R emov e spea ker leads ,an d rese t the a mplifi er. If t he Pro tection LED still co mes o n ,
then the ampl ifier is faulty.
T he am plifier will sh ut dow n auto matic ally wh en the units tempe rature goes up to 80 C
T his will prote ct the units f rom da mage .
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T
ROUBLESHOOTING
Before remov ing yo ur am plifier ,refer to the list be low an d follow the
su ggest ed pro cedures. Alw ays te st the speak ers an d the ir wire s first.
C heck for goo d grou nd con nectio n.
C heck that rem ote D C term inal has at le ast 7V DC.
C heck that the re is b attery power on the + term inal.
C heck a ll FUS ES.
C heck that Pro tectio n LED is not lit. If it is lit, s hut of f amplifier briefly a nd the n
re power it.
D isconn ect all RCA i nputs to the amplifier , if hiss/ n oise d isapp ears , then
pl ug in the co mponent driving t he am plifier and u nplug its inpu ts . If hiss/
no ise dis appe ars, g o on until the faulty /noisy comp onent is fou nd.
It is bes t to se t the a mplif ier inp ut leve l as in sensit ive as possib le. Th e bes t
su bjecti ve S/N ratio is obta inable this w ay . Try to drive as high a signa l leve l
fro m the head unit a s poss ible.
AMPLIFIER W ILL N OT POWER UP.
HIGH HISS OR EN GINE NOISE(ALTERNATOR WHINE) IN SPEAKERS.
C heck that th e mini mum s peake r imp edanc e for that m odel is corre ct.
C heck for spe aker s horts .
C heck that th ere is good a irflow aroun d the ampli fier . I n som e app licatio ns,
a n exte rnal c ooling fan m ay be requir ed.
C heck that th e Leve l cont rol`s i s set t o matc h the signal level of the head u nit.
C heck that al l cross over f reque ncies have b een p roperly set .
C heck for sho rts on the sp eake r leads .
T his is always caus ed by a poor ly gro unded RCA patch cord.
AMPLIFIER S GETS VERY HOT.
DISTORTED SOUN D.
HIGH SQ UEAL NO ISE FROM SPEAKERS.
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