User manual JBL SDEC2500A

[. . . ] 7 KIT INVENT O RY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 HARDWARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 CABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 S E C T IIO N 2 -- S Y S T E M IIIN S T A L L A T IIIO N N O T E S . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Th i s i s a l e a d i n g c a u s e o f g r o u n d c u r r e n t r e l a t e d p r o b l e m s . I n t h e c a s e o f c a b l e TV s e r vi c e , o n e s o l u t i o n i s t o s t r a p t h e i n c o m i n g c a b l e s h i e l d d i r e c t l y t o t h e s y s t e m ' s AC receptacle ground. Another, perhaps easier approach is to install an RF isolation transformer. If the source of hum is the remote AC connection of the projector, the best solution is to pull a 1 2 - g a g e g r o u n d wi r e a l o n g wi t h t h e v i d e o c a b l e s . C o n n e c t t h i s g r o u n d wi r e b e t we e n t h e chassis of the projector and the chassis of the Surround Processor. 3 SECTION 4 - U S IIN G D A C S 4 US NG DACS INTRODUCTION C a l i b r a t i o n o f a S y n t h e s i s s y s t e m i s a m u l t i - s t e p p r o c e s s . F i r s t , we a c q u i r e t e s t d a t a , wh i c h a c c u r a t e l y r e p r e s e n t s wh a t i s a c t u a l l y h a p p e n i n g i n t h e r o o m . S e c o n d , we p r o c e s s t h i s d a t a t o c r e a t e a v i e w r e l e v a n t t o wh a t we h e a r . Th i r d , t h i s d a t a i s c o m p a r e d t o t h e t h e o r e t i c a l i d e a l . F i n a l l y , c o r r e c t i ve a c t i o n i s t a k e n t o m a k e t h e l i s t e n i n g e n v i r o n m e n t m o r e c l o s e l y m a t c h t h e i d e a l . Me a n i n g f u l a c o u s t i c m e a s u r e m e n t s c a n n o t b e a c c o m p l i s h e d b y p l a c i n g a m i c r o p h o n e a t a s i n g l e p o s i t i o n a n d r u n n i n g a t e s t . Th e k e y p r e m i s e o f r o o m e q u a l i z a t i o n a t l o w f r e q u e n c i e s i s t h a t t h e e q u a l i z a t i o n wi l l b e u s e d o n l y t o c o r r e c t r e s p o n s e e r r o r s c a u s e d b y r o o m r e s o n a n c e s . Tu r n t h e s u r r o u n d p r o c e s s o r o n f i r s t , a l l o wi n g a d e q u a t e t i m e f o r a l l S y n t h e s i s c o m p o n e n t s t o come on. Tu r n t h e s u r r o u n d p r o c e s s o r ' s vo l u m e c o n t r o l t o m i n i m u m . S e l e c t t h e TA P E i n p u t o n t h e S u r r o u n d P r o c e s s o r . I f y o u u s e d a d i f f e r e n t i n p u t , s e l e c t t h a t one. Tu r n o n t h e l a p t o p c o m p u t e r a n d wa i t f o r i t t o b o o t . W h e n b o o t - u p i s c o m p l e t e , t h e r e wi l l b e a m e s s a g e o n t h e s c r e e n a s k i n g i f t h e r e i s a n S D E C 1 0 0 0 / 2 5 0 0 i n t h i s s y s t e m . Th e c o m p u t e r wi l l p a u s e a t t h i s p o i n t , wa i t i n g f o r y o u r r e s p o n s e . D O N O T r e s p o n d a t t h i s t i m e . R a i s e t h e v o l u m e o f t h e P r o c e s s o r , l i s t e n i n g a s y o u d o f o r a n y a b n o r m a l n o i s e s . Th i s m i g h t b e h u m , p o p s , t i c k s , s i zzl i n g , h i s s i n g o r a n y o t h e r s o u n d , wh i c h i s a b n o r m a l o r u n e xp e c t e d . R e m e m b e r t h a t s o m e l o w- l e ve l h u m a n d h i s s i s n o r m a l , b u t i t s h o u l d b e q u i t e s u b t l e . C o n t i n u e until you reach 0dB. 3 Microphone Placement Th e D A C S 4 c a l i b r a t i o n k i t i n c l u d e s f i v e m i c r o p h o n e s . [. . . ] U s e t h e f o l l o wi n g p r o c e d u r e t o l o a d t h e s e t t i n g s . W ith COM Tu r n Boot e ve r yt h i n g o f f , c o n n e c t a s t a n d a r d M- F D B 9 ( 9 - p i n ) c a b l e b e t we e n t h e c o m p u t e r ' s port and the DB9 connector on the rear panel of the SDEC. 1 x o r W I N 9 5 / 9 8 TM . Insert the Loader Utility Disk. WINDOWSTM 3. 1X 5. F r o m t h e P r o g r a m Ma n a g e r , c l i c k F i l e , t h e n R u n Ty p e A : l o a d e r i n t h e e n t r y f i e l d . [. . . ]