Martin Audio – MA2.8s (ETL) Amplifier
E
NGLISH
16
9
PR O TE C T I O N FE A T UR E S
(DFK0DUWLQ$XGLRDPSOLILHUKDVPDQ\DGYDQFHGSURWHFWLRQIHDWXUHVSURWHFWLQJERWKWKHDPSOLILHUDQGWKH
ORXGVSHDNHUVFRQQHFWHGWRLWVKRXOGDIDXOWFRQGLWLRQDULVH8QGHUQRUPDOXVHWKHVHIHDWXUHVDUHLQDXGLEOH$OO
SURWHFWLRQFLUFXLWVRSHUDWHLQGHSHQGHQWO\
9 .1
Ou t p u t Li m i t e r
$QRXWSXWOLPLWHULVLQFOXGHGWRDYRLGDPSOLILHUFOLSSLQJ:KHQDQDPSOLILHULVVHYHUHO\RYHUGULYHQLWVRXWSXWZDYHIRUP
LVFOLSSHGLWVSHDNVDUHVTXDUHGRII±UHGXFLQJWKHFUHVWIDFWRU,QH[WUHPHFDVHVWKHZDYHIRUPFDQDSSURDFKWKDWRI
DVTXDUHZDYH$QDPSOLILHULVQRUPDOO\FDSDEOHRISURGXFLQJIDUPRUHSRZHUXQGHUWKHVHFRQGLWLRQVWKDQLWVQRUPDO
XQGLVWRUWHGUDWHGRXWSXWSRZHU
7KHOLPLWHUZRUNVE\PRQLWRULQJWKHRXWSXWDQGFRPSDULQJWKHGLVWRUWLRQSURGXFHGEHWZHHQWKHLQSXWDQGRXWSXWRIWKH
DPSOLILHU,IWKHGLVWRUWLRQH['IRUDQ\UHDVRQYROWDJHRUFXUUHQWFOLSSLQJWKHOLPLWHUUHGXFHVWKHLQSXW
VLJQDOSURSRUWLRQDOO\1RWHWKDWLIWKHVLJQDOLVGLVWRUWHGRUFOLSSHGEHIRUHLWUHDFKHVWKHDPSOLILHUWKHFOLSOLPLWHUZLOOQRW
EHDFWLYDWHG
8QGHUQRUPDORSHUDWLRQWKHFOLSOLPLWHULVLQDXGLEOH7KHOLPLWHUFDQEHWXUQHG³2Q´RU³2II´E\SUHVVLQJWKHUHOHYDQWFOLS
OLPLWVZLWFK6HHSDJH
6RPHPDQXIDFWXUHUVRIORXGVSHDNHUSURFHVVRUVGRQRWUHFRPPHQGWKHXVHRIFOLSOLPLWHUVLQDPSOLILHUVDVLWFDQ
DIIHFWWKHWUDFNLQJRIWKHSURFHVVRUVOLPLWHUV
,IWKHDPSOLILHULVEHLQJXVHGZLWKRXWDQ\H[WHUQDOOLPLWLQJ0DUWLQ$XGLRUHFRPPHQGOHDYLQJWKHFOLSOLPLWHUVVZLWFKHG
21EXWWRQGHSUHVVHG
9 .2
T h e r m a l pr o t e c t io n
:KHQWKHDPSOLILHULVGULYHQYHU\KDUGLQWRDORZLPSHGDQFHORDGWKHFRROLQJIDQVZLOOUXQDWKLJKVSHHG,IWKHVH
RSHUDWLQJFRQGLWLRQVFRQWLQXHWKH3URWHFWLQGLFDWRUVZLOOLOOXPLQDWHLQGLFDWLQJWKDWWKHDPSOLILHULVDERXWWRJRLQWR
WKHUPDOVKXWGRZQ
$IWHUILYHVHFRQGVWKHDPSOLILHUZLOOJRLQWRWKHUPDOSURWHFWE\PXWLQJWKHLQSXWVLJQDO$IWHUVHFRQGVWKH
DPSOLILHUZLOOKDYHFRROHGGRZQHQRXJKIRUWKHDPSOLILHUWRFRPHRXWRIVKXWGRZQDQGRSHUDWHDVQRUPDO,IWKHORDG
FRQGLWLRQVUHPDLQXQFKDQJHGWKHWKHUPDOSURWHFWLRQZLOOEHUHLQLWLDWHG7KHUPDOSURWHFWLRQRFFXUVZKHQWKHKHDWVLQN
WHPSHUDWXUHUHDFKHV
&
9 .3
VH F p r o t e c t i o n
,IDVLJQDORIPR]DWIXOOSRZHULVGHWHFWHGIRUPRUHWKDQILYHVHFR)SURWHFWLRQPXWHVWKH
LQSXWVLJQDO7KLVLVLQGLFDWHGRQWKHIURQWSDQHO
E\WKH/('ODEHOHG3URWHFW$IWHUILYHVHFRQGVWKHRXWSXWVZLOOXQ
PXWHDQGUHWXUQWRQRUPDORSHUDWLRQXQOHVVWKHRXWSXWVLJQDOKDVUHPDLQHGXQFKDQJHGLQZKLFKF)
SURWHFWLRQZLOOUHLQLWLDWH
9 .4
Sh o r t c i r c u i t p r o t e c t i o n
$OO0DUWLQ$XGLR0$6HULHVDPSOLILHUVDUHFRPSOHWHO\VKRUWFLUFXLWSURWHFWHG7KHSURWHFWLRQFLUFXLWSHUPLWVYHU\KLJK
SHDNFXUUHQWVEXWVWLOOKROGVWKHRXWSXWGHYLFHVZLWKLQWKHVDIHRSHUDWLQJDUHD,IDVKRUWFLUFXLWLVPDLQWDLQHGWKH
FKDQQHODIIHFWHGZLOOHYHQWXDOO\JRLQWRDWKHUPDOSURWHFWF\FOHXQWLOWKHVKRUWFLUFXLWKDVEHHQUHPRYHG
9 .5
A C ma in s v o l t a g e pr o t e c t i o n
,IWKH$&PDLQVYROWDJHLVRXWVLGHWKHRSHUDWLRQDOZLQGRZRYHURUXQGHUYROWDJHWKHSRZHUVXSSO\ZLOODXWRPDWLFDOO\
VKXWGRZQ:KHQWKHPDLQVYROWDJHLVDERYHWKHPLQLPXPVWDUWYROWDJHDQGEHORZLWVPD[LPXPRSHUDWLQJYROWDJHWKH
DPSOLILHUZLOOUHVWDUW
7KHWZRJUHHQµ21¶/('¶VLQGLFDWHZKHQWKHSRZHUVXSSO\LVRSHUDWLQJFRUUHFWO\
,WWDNHVDFRXSOHRIVHFRQGVWRVHOIFKHFNWKLVLVNQRZQDVWKHVRIWVWDUWRUVORZVWDUWVHTXHQFHWKHJDLQZLOO
VORZO\DQGJUDGXDOO\EHLQFUHDVHGEDFNWRWKHSUHYLRXVO\VHWOHYHODQGWKHIDQVZLOOEORZDWKLJKVSHHGEHIRUHJRLQJ
LQWRLGOH
All material © 2007. Martin Audio Ltd. Subject to change without notice.
CONTENTS
<
>
GUIDES