SoundCraft B400 - Manual (Page 22)

3.2 B400 Block Diagrams
48V
LINE
MIC
LINE
OPTION
GAIN
HPF
HF MF LF
Centre Freq.
Cut/Boost
3-Band, Semi-Parametric EQ EQ
PAD
MUTE
VCA
FADER
*
Note: the Insert Point may be
configured to be in one of two
other places which are marked thus -
PAN
INSERT
SEND
INSERT
RETURN
GROUPS
STEREO
ROUTE
48V PHANTOM
-30dBu TONE
ST LEFT
GRP
PAN
to groups
R
L
INS
VCA &
CONTROL
OVER-
PRESS
OPTION
DIR O/P
AUX 1
FADER
DOWN
EXT MUTE CTL
EXT VCA CTL
DIRECT
OUTPUT
LINE
REMOTE
START
LINE
REMOTE
STOP
RELAY
CONTROL
LOGIC
LED
METER
AUX1 (POT + PRE)
MAY BE SWITCHED
TO CONTROL
DIRECT OUTPUT
AUX1 POT
MAY BE SWITCHED
TO CONTROL
DIRECT OUTPUT
DIRECT
OUTPUT
ROUTING
CONTROL
METER
SLATE TALK/TONE
SLATE CTL
ON-AIR CTL
CLEANFEED L
CLEANFEED R
OVERPRESS
OVERPRESS CTL
CUE CTL
CUE CLEAR
PFL/AFL CTL
AUX1
STUDIO MUTE STUDIO MUTE
MONITOR DIM MONITOR DIM
REM COM
REM COM
AUX2
AUX4
LEFT
AUX3
AUX4
RIGHT
CUE R
CUE L
AFL/PFL
CONTROL
CUE
CLEANFEED
MIXES
PEAK 3-INPUT
PEAK
DETECT
AUX3 CIRCUIT IS
IDENTICAL TO AUX2
PRE
PRE
PRE
LEVEL
PAN
+
_
MIC
LIVE
TONE
PHASE
REV
ON
1-2
3-4
5-6
7-8
1-2
3-4
5-6
7-8
ST RIGHT
DIR
1
2
3
4
5
6
7
8