MACKIE M1200/M1400 - Manual (Page 42)

42
CH 1
B
ALANCED
LINE INPUT
(T
R
S
)
CH 1
B
ALANCED
LINE INPUT
(XLR
-F)
LIMITER LIMITER
ON OFF
LOW CUT FIL
TER
LOW P
ASS
FIL
TER
(SUBWOOFER)
+ – 80 VDC
+ – 90 VDC
TO
R
OID
AL P
OWER
TRANSFORMER
LAMP
FUSE
MA
CKIE DESIGNS
M•1200/M•1400 BL
OCK DIA
GRAM
(#110896DF)
FREQ
CD EQ
FREQ
OUTPUT
APPLIC
A
TION
SWIT
CH
AMP MODE SWIT
CH
63 Hz 125 Hz
FREQ
TO
LIMITER
ON OFF
LOW CUT FIL
TER
FREQ
CD EQ
FREQ
CH 1 GAIN
S
TEREO MONO BRIDGE
CH 2 GAIN
INVER
TING
UNIT
Y GAIN
AMPLIFIER
ON OFF SUB
ON OFF SUB
NC NC
NC
MUTE CH 1
PR
O
TECT
LED
CH 1
SHOR
T
LED
MUTE CH 2
PR
O
TECT
LED
P
OWER
AMPLIFIER
CH 1
SPEAKER
OUT
FUSE
–80VDC
FUSE
+80VDC
DC OFFSET
DETECT SHOR
T
DETECT
METER DRIVE
P
OWER
AMPLIFIER
CH 2
SPEAKER
OUT
FUSE
–80VDC
FUSE
+80VDC
DC OFFSET
DETECT
TO
CH 1
MUTE
OL –3 –6 –9 –20 SIG
CH 1 SIG
CH 2
SHOR
T
LED
SHOR
T
DETECT
METER DRIVE
TO
CH 2
MUTE
OL –3 –6 –9 –20 SIG
CH 2 SIG
SIG
(T
O CH 1
METER DRIVE)
SIG
(T
O CH 2
METER DRIVE)
PD's LEASH
HO
T
LED COLD LED
TEMP
SENSOR
(ON HEA
TSINK)
TO
CH 1
AND CH 2
MUTE
CH 1 AMP OUT CH 2 AMP OUT
CH 1 MUTE CH 2 MUTE
60ºC
DETECT
OR
FA
N
SPEED CONTR
OL
HI DCV LO
DCV
CH 1 MUTE CH 2 MUTE
P
OWER
SWIT
CH TO
CH 1
AND CH 2
MUTE
THERMAL PR
O
TECT
THR
U
(XLR
-M)
CH 2
B
ALANCED
LINE INPUT
(T
R
S
)
CH 2
B
ALANCED
LINE INPUT
(XLR
-F)
THR
U
(XLR
-M)
80ºC MUTE 55ºC UNMUTE
FA
N
TO
HUSKY
S
TADIUM
BLOCK DIAGRAM
M•1200/M•1400