MACKIE M800 - Manual (Page 25)

25
M•800 BLOCK DIAGRAM
CH 1
BALANCED LINE INPUT
(TRS) CH 1
BALANCED LINE INPUT
(XLR-F)
LIMITER LIMITER
ON
OFF
ON
OFF
LIMITER SWITCH
LIMITER
DETECTION
LIMITER
DETECTION
ON OFF
LO
W CUT
FIL
TER
FREQ
CD EQ
FREQ
ON OFF
LO
W CUT
FIL
TER
FREQ
CD EQ
FREQ
CH 1 GAIN
STEREO MONO
BRIDGE STEREO
MONO
BRIDGE
STEREO
MONO
BRIDGE
CH 2 GAIN
INVER
TING
UNITY GAIN AMPLIFIER
DC OFFSET
PR
O
TECT
METER DRIVE
AMP AMP
–64VDC
+64VDC
+74VDC –74VDC
–64VDC
+64VDC
+74VDC –74VDC
OL –3 –6 –9 –20
METER DRIVE
OL –3 –6 –9 –20
MUTE MUTE
THR
U
(XLR-M)
CH 2
BALANCED LINE INPUT
(TRS) CH 2
BALANCED LINE INPUT
(XLR-F)
THR
U
(XLR-M)
MUTE
HO
T
LED NORM
LED
TEMP
SENSOR
(ON HEA
TSINK)
MUTE
CONTR
OL
4 SEC DELA
Y
(TURN-ON)
CH 1 AMP OUT CH 2 AMP OUT
PR
OGRAM
DETECT
AND
OR
60ºC
DETECT
OR
FA
N
SPEED
CONTR
OL
HI DCV
LO DCV
80ºC MUTE 55ºC UNMUTE
FA
N
T
O
HUSKY
ST
ADIUM
CH 1
SPEAKER
OUT CH 2
SPEAKER
OUT
+ – 64 VDC
+ – 74 VDC
T
O
R
OID
AL PO
WER
TRANSFORMER
LAMP
FUSE
PO
WER
SWITCH
MUTE
THERMAL PR
O
TECT
DC OFFSET
PR
O
TECT