Martin Audio MA2.8s handleiding

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Handleiding

Martin Audio – MA2.8s Amplifier

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8 O PE R A TI O N

8 .1 O p e r a t i n g pr e c a u t io n s

• M ake su re th a t th e p ow er sw itch is se t to “O FF ” b efore con ne cting a n y in p ut o r o utpu t o r op e ra tin g th e

switche s o n rea r pa n el. S ee p ag e s 9 ab ou t insta lla tion .

• M ake su re th a t th e A C ma ins voltag e is co rre ct a n d th e sam e a s th e o ne p rin te d o n th e rea r p an el of the

a mp lifie r. S e e pa ge s 1 0, a bo ut op era ting vo ltag e a nd p o we r con su mp tio n.

• M ake su re th a t th e switch es o n the re ar p an e l fo r o pe ra tio n m od es, g ain-switch, clip -limite rs, a n d th e M LS

switche s a re in the co rre ct p osition . S ee p a ge 7 ab ou t o pe ra tin g mo d es, p ag e 1 5

ab ou t clip lim iters a nd 9 fo r

the M LS sw itche s.

• It is a lwa ys a go od id ea to turn d ow n the g a in co ntro ls du rin g po we r-u p, to p re ven t spe aker da ma g e in ca se

a h ig h sig na l is pre se nt at the in pu t.

8 .2 Po w e r in g u p – So f t s t a r t

W p14-he n yo u p ow e r up th e am p lifier it ta ke s a cou ple o f se con ds to che ck its circu its. T his is kn ow n a s th e "so ft-start" or

"slow -start" se qu en ce. T h e fa ns th en blow a t h ig h spe ed be fo re go i n g i n t o " i d le " a nd th e tw o b ottom g re e n LE D ’s

illum in a te to sho w the a m plifie r is o pe ra tio na l.

8 .3 I n p u t a t t e n u a t o r s

T he two in pu t level atte n ua to rs on th e fron t p an e l ad ju st th e sig na l leve l fo r the ir re sp ective a mp lifie r ch a nn el in a ll

m od es. T he y a re calibrate d in d B to h elp th e settin g up of a ctive lo ud sp e aker system s.

In brid g ed m o de , bo th co n trols m ust b e in th e sa m e po sitio n, so tha t the sp ea ke r loa d w ill b e sh a re d eq u ally be tw ee n

the cha n ne ls.

8 .4 I n d ic a t o r s

T p14-he two -bo tto m gree n ”ON ” L ED ’s in dicatin g tha t the o utp ut circuits are receivin g th e corre ct ra il vo lta ge .

T p14-he ”-4 0 d B” LE D’s illum ina te if the ou tp ut sign a l is g rea te r tha n -40 dB (w ith 0 dB a s refere nce to fu ll ou tp u t po we r).

T p14-he se L E D’s a lso act a s sig na l p re se n t in dicators.

F ro nt In dica tors

T p14-he Clip /limit ind ic ato r te lls w he n the a mp lifie r o utpu t is clipp in g o r lim itin g . It ha s tw o d ifferen t ind ica tion statuse s:

• If th e clip lim iter is e n ga ge d it ha s a sho rt tim e co nstan t a nd it illum ina te s b riefly.

• If th e clip lim iter is n o t en ga g ed it h as a n increa se d tim e con stan t a nd illu min ates fo r a lon ge r p erio d .

T p14-he rem a in in g yello w L ED s in d icate if an y p ro tection circu its are a ctiva te d. Th ese a re d e scrib ed o n p ag e 1 5.

9 PR O TE C T I O N FE A T UR E S

E ach Ma rtin A ud io a m plifier h as ma ny ad va nce d pro te ctio n fea tures, p ro te cting b o th th e am plifier an d th e

lou dspe a ke rs co nn ected to it, sh ou ld a fa ult con d itio n a rise . U nd er no rm a l use the se fe ature s are ina ud ible. All

p ro te ction circuits op era te ind e pe nd e ntly.

CONTENTS

GUIDES

Bekijk gratis de handleiding van Martin Audio MA2.8s, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.