Adcom GFA-555, Руководство пользователя

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ch eck in g p ro p er p h ase resp o n se l 3 to co n n ect two sp ea k ers and then p la c e them
s id e by s i d e . P la y some mono program m a te r ia l w ith h ea vy b a ss c o n te n t through
th e sy ste m . Now tu rn o f f th e sy ste m , and r e v e r s e on e pair o f le a d s t o one sp ea k er.
Turn on th e sy ste m and p la y th e same p a s sa g e a g a in . I f th e b a s s r esp o n se has in ­
c r e a s e d , le a v e th e system a s i t now i s . I f i t has d im in ish e d , turn o f f the system
and r e w ir e i t a s i t was o r i g i n a l l y s e t u p . When making lo u d sp ea k er c o n n ec tio n s
c a r e must b e tak en t o a v o id sh o r t c i r c u i t s which w i l l ca u se improper o p e r a tio n o f
th e a m p l i f i e r ,
BRIDGED (MONO) HOOKUP
The ADCOM GFA-555 can b e u sed a s an e x tre m e ly p o w e rfu l monaural a m p lif ie r
w ith o u t th e u s e o f any a d d it io n a l a c c e s s o r i e s or m o d if ic a t io n s .
For mono o p e r a tio n , th e S te r e o /B r id g e d s w itc h on th e rea r p an el should be
p ie c e d in th e b rid g ed p o s i t i o n . In t h e B ridged mode o n ly a s i n g l e in p u t c a b le i s
u s e d . The in p u t c a b le to th e GFA-555 should be p lu gged i n t o th e RIGHT CHANNEL
in p u t o n ly .
When c o n n e c tin g a s i n g l e speak&r to th e GFA-555 in b rid ged o p e r a tio n , the
p o s i t i v e te r m in a l o f th e sp eak er sh ou ld be con n ected to th e righ_t ch an n el p o s i t i v e
(r e d ) ou tp u t p o s t on th e GFA-555. The n e g a t iv e te r m in a l o f th e speaker should be
co n n ected t o th e l e f t ch an n el p o s i t i v e (red ) output p o s t . Remember th a t when
c o n n e c tin g th e sp eak er w ir e s , yr>u sh ou ld m a in ta in p roper p h asin g to o b ta in maximum
b a s s resp o n se and co h eren t sound q u a lit y .
AMPLIFIER PROTECTION CIRCUIT
Vour GFA-555 power a m p lif ie r i s equipped w ith e x t e r n a l and in t e r n a l f u s e s
w hich a r e d e sig n e d to p r o t e c t your lo u d sp e a k e rs from p o s s i b l e damage and a l s o to
p r o t e c t the amp i t s e l f under a l l b ut the s e v e r e s t abuse o f o p e r a tin g c o n d it io n s .
A th erm al c u t o f f i s a l s o employed to p r o t e c t th e a m p lif ie r under h ig h tem perature
c o n d it io n s .
B ecau se o f th e g r e a t amount o f e l e c t r i c a l en erg y s to r e d in i t s c a p a c it o r s .