Mackie 808M - Stereo Mixer Block Diagram

7
Block diagram (Stereo models: 408S, 808S)
63 125
250
500
1K
2K
4K
8K 16K
DAMPING/DEPTH
TIME/RATE
EFX WIDE
10
5
0
-5
-10
-15
-30
-40
-20dB
L
R
MID HI
80 2K5 12K
LO
75Hz HPF 75Hz HPF
63 125
250
500
1K
2K
4K
8K 16K
10
5
0
-5
-10
-15
-30
-40
10
5
0
-5
-10
-15
-30
-40
75Hz HPF
63 125
250
500
1K
2K
4K
8K 16K
PHANTOM
+15V DC
MID HI
80 2K5 12K
LO
MID HI
80 2K5 12K
LO
COMPRESSOR COMPRESSOR
PHANTOM
TRIM
(INPUT LEVEL SET)
0 to 40dB
G
L
O
B
A
L
P
H
A
N
T
O
M
P
O
W
PWR AMP GROUND
CHASSIS GROUND
PWR AMP GROUND
CHASSIS GROUND
RIGHT POWER AMP IN
MIC/LINE
CH 1-6
3-BAND EQ
+/- 15dB +/- 15dB
+/- 15dB
+VDC
+VDC
BREAK
(MUTES CH 1-6, EFX, AND MONITOR)
PHANTOM
L'
R'
EFX
MON
L
R
EFX
EFX
TO MONITOR
EFX
TO MAIN
EFX BYPASS
EFX CLIP
EFX RETURN L
EFX SEND
LEFT POWER AMP IN
LEFT MIXER OUT
AMP ROUTING
TAPE IN
TAPE OUT L
STEREO MAINS
MAIN/MONITOR
MONITOR
EFX
PA N
VOLUME
MONITOR
EFX
PA N
TRIM
(INPUT LEVEL SET)
TAPE OUT R
MAIN MASTER LEVEL
MONITOR LEVEL
STEREO CH 7-8
INSERT0 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
EFX RETURN R
RIGHT MIXER OUT MONITOR LINE OUT
+/- 15db +/- 15db
3-BAND EQ
9-BAND EQ 9-BAND EQ
9-BAND EQ
3-BAND EQ
EFX FOOT SWITCH
LEVEL
MACKIE DESIGNS PPM STEREO BLOCK DIAGRAM (#12099CJM/DF)
LEFT AMP
LEFT SPEAKER OUT
RIGHT AMP
RIGHT SPEAKER OUT
RUMBLE FILTER RUMBLE FILTER
RUMBLE FILTER
TAPE IN LEVEL
VOLUME
Off to +20dB
LEFT/ MONO
RIGHT
EMAC
DSP