Input/Output Connections - B&K Reference 125.2 Series II User Manual

6
Use either RCA unbalanced or XLR balanced to connect the preamplifier to amplifier.
FRONT LEFT
Binding posts are provided for speaker connections. There is one pair provided
for each amplifier channel output. They are designed to accept a banana-type
plug, spade-lug connector (shown right), terminal posts, or bare wire. They are
color coded for easy identification. The positive (+) RED post should always be
connected to the speakers (+) RED jack. The negative (-) BLACK post should
always be connected to the speakers (-) BLACK jack.
Shown right is the ampli-
fier to speaker connec-
tions (4 gauge (AWG)
wire maximum).

INPUT/OUTPUT CONNECTIONS

RCA Unbalanced Connections
C H A N N E L 1 I N P U T
X L R ( B A L A N C E D )
R C A I N P U T
X L R I N P U T
R C A ( U N B A L A N C E D )
BUTTON
OUT
C H A N N E L 1 I N P U T
X L R ( B A L A N C E D )
R C A I N P U T
X L R I N P U T
R C A ( U N B A L A N C E D )
BUTTON
PUSHED IN
FRONT LEFT
XLR Balanced Connections
SPEAKER OUTPUTS
C O N T R O L I / O
C T R L
I N
C T R L
O U T
1 2 V D C
2 0 0 m A
R C A I N P U T
F U S E
C AU T I O N : F O R C O N T I N U E D
P R O T E C T I O N A G A I N S T R I S K
O F F I R E R E P L A C E O N LY W I T H
S A M E T Y P E A N D R AT I N G .
S E R I A L #
A C L I N E
FRONT RIGHT
H i g h Pe r f o r m a n c e
A u d i o / V i d e o S y s t e m s
H a n d - M a d e i n t h e U . S . A .
www.bkcomp.com
R C A I N P U T
OR
H i g h Pe r f o r m a n c e
A u d i o / V i d e o S y s t e m s
H a n d - M a d e i n t h e U . S . A .
www.bkcomp.com
R C A I N P U T
BUTTON
PUSHED IN
C H A N N E L 1 I N P U T
H i g h Pe r f o r m a n c e
A u d i o / V i d e o S y s t e m s
X L R ( B A L A N C E D )
H a n d - M a d e i n t h e U . S . A .
X L R I N P U T
R C A ( U N B A L A N C E D )
B K
C H A N N E L 1 O U T P U T
S
IMPLY
P O S I T I V E N E G AT I V E
) + ( ( - )
Channel 1
C H A N N E L 2 I N P U T
B K
&
X L R ( B A L A N C E D )
S B
I M P LY E T T E R !
X L R I N P U T
R C A ( U N B A L A N C E D )
BUTTON
OUT
C H A N N E L 2 I N P U T
B K
&
X L R ( B A L A N C E D )
S B
I M P LY E T T E R !
X L R I N P U T
R C A ( U N B A L A N C E D )
FRONT RIGHT
Spade Connector
C H A N N E L 2 I N P U T
X L R ( B A L A N C E D )
www.bkcomp.com
R C A I N P U T
R C A ( U N B A L A N C E D )
&
C H A N N E L 2 O U T P U T
B
ETTER!
P O S I T I V E
R I S K O F E L E C T R I C S H O C K R I S K O F E L E C T R I C S H O C K
D O N O T O P E N D O N O T O P E N
) + (
Channel 2
Banana Jack
X L R I N P U T
N E G AT I V E
( - )