Vibe BB2 Owner's Manual

T
RO UBLESHOOTING
Before remov ing yo ur am plifier ,refer to the list be low an d follow the
su ggest ed pro cedures. Always te st the speak ers an d the ir wire s first.
AMPLIFI ER W ILL N OT PO WER UP.
Check for goo d grou nd con nectio n.
Check that rem ote D C term inal has at le ast 7V DC.
Check that the re is b attery power on the + term inal.
Check a ll FUS ES.
Check 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.
HIG H HI SS O R EN GINE NOI SE(A LTER NATO R W HINE ) IN S PEA KERS .
Disconn 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 way . Try to drive as high a signa l leve l
fro m the head unit a s poss ible.
PR OTEC TION LED COMES ON WHEN TH E AM PLIF IER I S POW ERE D UP.
Check for sho rts on speak er lead s.
Check that vo lume c ontrol on the head unit is turne d dow n low.
Remov 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 .
AM PLIF IER S GET S V ERY HOT. `
Check that th e mini mum s peake r imp edanc e for that m odel is corre ct.
Check for spe aker s horts .
Check 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.
DIS TOR TED SOUN D.
Check that th e Leve l cont rol`s i s set t o matc h the signal level of the head u nit.
Check that al l cross over f reque ncies have b een p roperly set .
Check for sho rts on the sp eake r leads .
HIG H SQ UEA L NO ISE F ROM SPEA KER S.
T his is always caus ed by a poor ly gro unded RCA patch cord.
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