Mackie 406M, Service Manual

Page: 6 / 20

6
Block diagram (Mono models: 406M, 408M, 808M)
63
125
250
500
1K
2K
4K
8K
16K
EFX RET L EFX RET R
EFX WIDE
10
5 0
-5
-10 -15 -30 -40
-20dB
L R
MID
HI
80
2K5
12K
LO
75Hz HPF
10
5
0
-5
-10 -15
-30
-40
75Hz HPF
63
125
250
500
1K
2K
4K
8K
16K
MID
HI
80
2K5
12K
LO
COMPRESSOR COMPRESSOR
PHANT
OM
TRIM
(INPUT LEVEL SET)
0 to 40dB
PHANT
OM
+15V DC
G
L
O
B
A
L
P
H
A
N
T
O
M
P
O
W
PWR AMP GR
OUND
CHASSIS GR
OUND
LEFT PO
WER
AMP IN
PWR AMP GR
OUND
CHASSIS GR
OUND
RIGHT PO
WER
AMP IN
D
AMPING/DEPTH
TIME/RA
TE
MIC/LINE
CH 1-6
3-BAND EQ
+/- 15dB +/- 15dB
+VDC
+VDC
BREAK (MUTES CH 1-6, EFX, AND MONIT
OR)
PHANT
OM
MAIN'
EFX
MON
MAIN
EFX
EFX T
O
MONIT
OR
EFX T
O
MAIN
EFX BYP
ASS
EFX CLIP
EFX RETURN
MIXER LINE OUT
AMP R
OUTING
T
APE IN
T
APE OUT L
MAINS
MAIN/MONIT
OR
MONIT
OR
EFX
V
OLUME
MONIT
OR
EFX
TRIM
(INPUT LEVEL SET)
T
APE OUT R
MAIN MASTER LEVEL
MONIT
OR LEVEL
STEREO CH 7-8
(Not A
v
ailab
le
on the 406M)
INSER
T
0 to 40dB
Off to +20dB
Off to +20dB
Off to +10dB
+/- 15dB
Off to +12dB
Off to +20dB
Off to +10dB
Off to +12dB
Off to +10dB
Off to +10dB
Off to +12dB
Off to +10dB
MONIT
OR
LINE OUT
+/- 15db
3-BAND EQ
9-BAND EQ 9-BAND EQ
EFX FOO
T
SWITCH
LEVEL
MA
CKIE DESIGNS
PPM MONO BLOCK DIA
GRAM
(#12099CJM/DF)
LEFT AMP
LEFT SPEAKER OUT
RIGHT AMP
RIGHT SPEAKER OUT
R
UMBLE FIL
TER
R
UMBLE FIL
TER
T
APE IN
LEVEL
V
OLUME
Off to +20dB
LEFT/ MONO RIGHT
EFX SEND
LEFT SPEAKER OUT
EMA
C
DSP