Mackie 8 BUS User Manual

8•BUS OWNER'S MANUAL
10
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11
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12
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13
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14
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15
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16
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17
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18
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19
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20
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21
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22
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23
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24
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24x8x2 8-BUS MIXING CONSOLE
9
MUTE
2
MUTE
3
MUTE
4
MUTE
5
MUTE
6
MUTE
7
MUTE
8
MUTE
1
MUTE
23
24
21
22
19
20
17
18
15
16
13
14
11
12
9
10
PHANTOM
POWER
LINE
IN
DIRECT
OUT
INSERT
BAL-
UNBAL
TIP = OUT
RING = IN
LINE
IN
DIRECT
OUT
INSERT
BAL-
UNBAL
TIP = OUT
RING = IN
LINE
IN
DIRECT
OUT
INSERT
BAL-
UNBAL
TIP = OUT
RING = IN
LINE
IN
DIRECT
OUT
INSERT
BAL-
UNBAL
TIP = OUT
RING = IN
MIC/LINE
MIC/LINE
MIC/LINE
MIC/LINE
LINE
IN
DIRECT
OUT
INSERT
BAL-
UNBAL
TIP = OUT
RING = IN
LINE
IN
DIRECT
OUT
INSERT
BAL-
UNBAL
TIP = OUT
RING = IN
LINE
IN
DIRECT
OUT
INSERT
BAL-
UNBAL
TIP = OUT
RING = IN
LINE
IN
DIRECT
OUT
INSERT
BAL-
UNBAL
TIP = OUT
RING = IN
MIC/LINE
MIC/LINE
MIC/LINE MIC/LINE
MIC/LINE
LINE
IN
DIRECT
OUT
INSERT
BAL-
UNBAL
TIP = OUT
RING = IN
LINE
IN
DIRECT
OUT
INSERT
BAL-
UNBAL
TIP = OUT
RING = IN
LINE
IN
DIRECT
OUT
INSERT
BAL-
UNBAL
TIP = OUT
RING = IN
LINE
IN
DIRECT
OUT
INSERT
BAL-
UNBAL
TIP = OUT
RING = IN
LINE
IN
DIRECT
OUT
INSERT
BAL-
UNBAL
TIP = OUT
RING = IN
LINE
IN
DIRECT
OUT
INSERT
BAL-
UNBAL
TIP = OUT
RING = IN
LINE
IN
DIRECT
OUT
INSERT
BAL-
UNBAL
TIP = OUT
RING = IN
LINE
IN
DIRECT
OUT
INSERT
BAL-
UNBAL
TIP = OUT
RING = IN
MIC/LINE
MIC/LINE
MIC/LINE
MIC/LINE
MIC/LINE
MIC/LINE
MIC/LINE
CHANNEL
17
18
19
20
21
22
23
24
10
11
12
13
14
15
16
9
TAPE
MIC/LINE
+4
–10
48
dB
40
dB
U
L
I
N
E
S
E
N
S
I
T
I
V
I
T
Y
M
I
C
/
L
I
N
E
G
A
I
N
TAPE
MIC/LINE
+4
–10
48
dB
40
dB
U
L
I
N
E
S
E
N
S
I
T
I
V
I
T
Y
M
I
C
/
L
I
N
E
G
A
I
N
TAPE
MIC/LINE
+4
–10
48
dB
40
dB
U
L
I
N
E
S
E
N
S
I
T
I
V
I
T
Y
M
I
C
/
L
I
N
E
G
A
I
N
TAPE
MIC/LINE
+4
–10
48
dB
40
dB
U
L
I
N
E
S
E
N
S
I
T
I
V
I
T
Y
M
I
C
/
L
I
N
E
G
A
I
N
TAPE
MIC/LINE
+4
–10
48
dB
40
dB
U
L
I
N
E
S
E
N
S
I
T
I
V
I
T
Y
M
I
C
/
L
I
N
E
G
A
I
N
TAPE
MIC/LINE
+4
–10
48
dB
40
dB
U
L
I
N
E
S
E
N
S
I
T
I
V
I
T
Y
M
I
C
/
L
I
N
E
G
A
I
N
TAPE
MIC/LINE
+4
–10
48
dB
40
dB
U
L
I
N
E
S
E
N
S
I
T
I
V
I
T
Y
M
I
C
/
L
I
N
E
G
A
I
N
TAPE
MIC/LINE
+4
–10
48
dB
40
dB
U
L
I
N
E
S
E
N
S
I
T
I
V
I
T
Y
M
I
C
/
L
I
N
E
G
A
I
N
TAPE
MIC/LINE
+4
–10
48
dB
40
dB
U
L
I
N
E
S
E
N
S
I
T
I
V
I
T
Y
M
I
C
/
L
I
N
E
G
A
I
N
TAPE
MIC/LINE
+4
–10
48
dB
40
dB
U
L
I
N
E
S
E
N
S
I
T
I
V
I
T
Y
M
I
C
/
L
I
N
E
G
A
I
N
TAPE
MIC/LINE
+4
–10
48
dB
40
dB
U
L
I
N
E
S
E
N
S
I
T
I
V
I
T
Y
M
I
C
/
L
I
N
E
G
A
I
N
TAPE
MIC/LINE
+4
–10
48
dB
40
dB
U
L
I
N
E
S
E
N
S
I
T
I
V
I
T
Y
M
I
C
/
L
I
N
E
G
A
I
N
TAPE
MIC/LINE
+4
–10
48
dB
40
dB
U
L
I
N
E
S
E
N
S
I
T
I
V
I
T
Y
M
I
C
/
L
I
N
E
G
A
I
N
TAPE
MIC/LINE
+4
–10
48
dB
40
dB
U
L
I
N
E
S
E
N
S
I
T
I
V
I
T
Y
M
I
C
/
L
I
N
E
G
A
I
N
TAPE
MIC/LINE
+4
–10
48
dB
40
dB
U
L
I
N
E
S
E
N
S
I
T
I
V
I
T
Y
M
I
C
/
L
I
N
E
G
A
I
N
TAPE
MIC/LINE
+4
–10
48
dB
40
dB
U
L
I
N
E
S
E
N
S
I
T
I
V
I
T
Y
M
I
C
/
L
I
N
E
G
A
I
N
FLIP
GAIN
TRIM
FLIP FLIP
GAIN
FLIP
GAIN
FLIP
GAIN
FLIP
GAIN
FLIP
GAIN
FLIP
GAIN
FLIP
GAIN
TRIM
FLIP
TRIM
FLIP FLIP
GAIN
FLIP
GAIN
TRIM
FLIP
GAIN
FLIP
GAIN
FLIP
GAIN
AUX
PRE
1
2
4
3
5
6
MIX-B
CHANNEL
PRE
SHIFT
SOURCE
+15
OO
U
+15
OO
U
+15
OO
U
+15
OO
U
AUX
AUX
PRE
1
2
4
3
5
6
MIX-B
CHANNEL
PRE
SHIFT
SOURCE
+15
OO
U
+15
OO
U
+15
OO
U
+15
OO
U
AUX
9
10
AUX
PRE
1
2
4
3
5
6
MIX-B
CHANNEL
PRE
SHIFT
SOURCE
+15
OO
U
+15
OO
U
+15
OO
U
+15
OO
U
AUX
AUX
PRE
1
2
4
3
5
6
MIX-B
CHANNEL
PRE
SHIFT
SOURCE
+15
OO
U
+15
OO
U
+15
OO
U
+15
OO
U
AUX
11
12
AUX
PRE
1
2
4
3
5
6
MIX-B
CHANNEL
PRE
SHIFT
SOURCE
+15
OO
U
OO
U
+15
OO
U
+15
OO
U
AUX
PRE
1
2
4
3
5
6
MIX-B
CHANNEL
PRE
SHIFT
SOURCE
+15
OO
U
+15
OO
U
+15
OO
U
+15
OO
U
AUX
13 14
AUX
PRE
1
2
4
3
5
6
MIX-B
CHANNEL
PRE
SHIFT
SOURCE
+15
OO
U
+15
OO
U
+15
OO
U
+15
OO
U
AUX
AUX
PRE
1
2
3
5
6
MIX-B
CHANNEL
PRE
SHIFT
SOURCE
+15
OO
U
+15
OO
U
OO
U
+15
OO
AUX
15
16
AUX
PRE
1
2
4
3
5
6
MIX-B
CHANNEL
PRE
SHIFT
SOURCE
+15
OO
U
+15
OO
U
+15
OO
U
+15
OO
U
AUX
AUX
1
2
4
3
5
6
MIX-B
CHANNEL
PRE
SHIFT
SOURCE
+15
OO
U
+15
OO
U
+15
OO
U
+15
OO
U
AUX
18
19
AUX
PRE
1
2
4
3
5
6
MIX-B
CHANNEL
PRE
SHIFT
SOURCE
+15
OO
U
+15
OO
U
+15
OO
U
+15
OO
U
AUX
AUX
PRE
1
2
4
3
5
6
MIX-B
CHANNEL
PRE
SHIFT
SOURCE
+15
OO
U
+15
OO
U
+15
OO
U
+15
OO
AUX
20
21
AUX
PRE
1
2
4
3
5
6
MIX-B
CHANNEL
PRE
SHIFT
SOURCE
+15
OO
U
+15
OO
U
+15
OO
U
+15
OO
U
AUX
AUX
PRE
1
2
4
3
5
6
MIX-B
CHANNEL
PRE
SHIFT
SOURCE
+15
OO
U
+15
OO
U
+15
OO
U
+15
OO
U
AUX
17
22
AUX
PRE
1
2
4
3
5
6
MIX-B
CHANNEL
PRE
SHIFT
SOURCE
+15
OO
U
+15
OO
U
+15
OO
U
+15
OO
U
AUX
AUX
PRE
1
2
4
3
5
6
MIX-B
CHANNEL
PRE
SHIFT
SOURCE
+15
OO
U
+15
OO
U
+15
OO
U
+15
OO
U
AUX
23
24
+15
AUX
4
+15
U
PRE
U
HI
MID
BAND
WIDTH
500 18k
3k
FREQ
–15 +15
U
1k 5k
3
2
12
NORMAL
HI
MID
BAND
WIDTH
500 18k
3k
FREQ
–15 +15
U
1k 5k
3
2
12
NORMAL
OCTAVES
HI
MID
BAND
WIDTH
500 18k
3k
FREQ
–15 +15
U
1k 5k
3
2
12
NORMAL
HI
MID
BAND
WIDTH
500 18k
3k
FREQ
–15 +15
U
1k 5k
3
2
12
NORMAL
OCTAVES
OCTAVES
HI
MID
BAND
WIDTH
500 18k
3k
FREQ
–15 +15
U
1k 5k
3
2
12
NORMAL
HI
MID
BAND
WIDTH
500 18k
3k
FREQ
–15 +15
U
1k 5k
3
2
12
NORMAL
OCTAVES
OCTAVES
HI
MID
BAND
WIDTH
500 18k
3k
FREQ
–15 +15
U
1k 5k
3
2
12
NORMAL
HI
MID
BAND
WIDTH
500 18k
3k
FREQ
–15 +15
U
1k 5k
3
2
12
NORMAL
OCTAVES
OCTAVES
HI
MID
BAND
WIDTH
500 18k
3k
FREQ
–15 +15
U
1k 5k
3
2
12
NORMAL
HI
MID
BAND
WIDTH
500 18k
3k
FREQ
–15 +15
U
1k 5k
3
2
12
NORMAL
OCTAVES
OCTAVES
HI
MID
BAND
WIDTH
500 18k
3k
FREQ
–15 +15
U
1k 5k
3
2
12
NORMAL
HI
MID
BAND
WIDTH
500 18k
3k
FREQ
–15 +15
U
1k 5k
3
2
12
NORMAL
OCTAVES
OCTAVES
HI
MID
BAND
WIDTH
500 18k
3k
FREQ
–15 +15
U
1k 5k
3
2
12
NORMAL
HI
MID
BAND
WIDTH
500 18k
3k
FREQ
–15 +15
U
1k 5k
3
2
12
NORMAL
OCTAVESOCTAVES
HI
MID
BAND
WIDTH
500 18k
3k
FREQ
–15 +15
U
1k 5k
3
2
12
NORMAL
HI
MID
BAND
WIDTH
500 18k
3k
FREQ
–15 +15
U
1k 5k
3
2
12
NORMAL
OCTAVES
OCTAVES
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
OCTAVES
EQ
LOW CUT
EQ IN
LO
MID
HI
FREQ
75 Hz
18dB/oct
45 3k
–15 +15
U
LO
–15 +15
U
–15 +15
U
250
220 350
EQ
LOW CUT
EQ IN
LO
MID
HI
FREQ
75 Hz
18dB/oct
45 3k
–15 +15
U
LO
–15 +15
U
–15 +15
U
250
220 350
EQ
LOW CUT
EQ IN
LO
MID
HI
75 Hz
18dB/oct
45 3k
–15 +15
U
LO
–15 +15
U
–15 +15
U
250
220 350
EQ
LOW CUT
EQ IN
LO
MID
HI
FREQ
75 Hz
18dB/oct
45 3k
–15 +15
U
LO
–15 +15
U
–15 +15
U
250
220 350
EQ
LOW CUT
EQ IN
LO
MID
HI
FREQ
75 Hz
18dB/oct
45
+15
U
LO
–15 +15
U
–15 +15
U
250
220 350
EQ
LOW CUT
EQ IN
LO
MID
HI
FREQ
75 Hz
18dB/oct
45 3k
–15 +15
80
U
–15 +15
U
–15 +15
U
250
220 350
EQ
LOW CUT
EQ IN
LO
MID
HI
FREQ
75 Hz
18dB/oct
45 3k
–15 +15
U
LO
–15 +15
U
–15 +15
U
250
220 350
EQ
LOW CUT
EQ IN
LO
MID
HI
FREQ
75 Hz
18dB/oct
45 3k
–15 +15
U
LO
–15 +15
U
–15 +15
U
250
220 350
12k
EQ
LOW CUT
EQ IN
LO
MID
HI
FREQ
75 Hz
18dB/oct
45 3k
–15 +15
80
U
LO
–15 +15
U
–15 +15
U
250
220
12k
EQ
LOW CUT
EQ IN
LO
MID
HI
FREQ
75 Hz
18dB/oct
45 3k
–15 +15
80
U
LO
–15 +15
U
–15 +15
U
250
220 350
12k
EQ
LOW CUT
EQ IN
LO
MID
HI
FREQ
75 Hz
18dB/oct
45 3k
–15 +15
80
U
LO
–15 +15
U
–15 +15
U
250
220 350
12k
EQ
LOW CUT
EQ IN
LO
MID
HI
FREQ
75 Hz
18dB/oct
45 3k
–15 +15
80
U
LO
–15 +15
U
–15 +15
U
250
220 350
12k
EQ
LOW CUT
EQ IN
LO
MID
HI
FREQ
75 Hz
18dB/oct
45 3k
–15 +15
80
U
LO
–15 +15
U
–15 +15
U
250
220 350
12k
EQ
LOW CUT
EQ IN
LO
MID
HI
FREQ
75 Hz
18dB/oct
45 3k
–15 +15
80
U
LO
–15 +15
U
–15 +15
U
250
220 350
12k
EQ
LOW CUT
EQ IN
LO
MID
HI
FREQ
75 Hz
18dB/oct
45 3k
–15 +15
80
U
LO
–15 +15
U
–15 +15
U
250
220 350
12k
EQ
LOW CUT
EQ IN
LO
MID
HI
FREQ
75 Hz
18dB/oct
45 3k
–15 +15
80
U
LO
–15 +15
U
–15 +15
U
250
220 350
12k
80
12k
80
12k
80
12k
LO
12k
80
12k
80
12k
80
12k
80
350
3k
–15
FREQ
+15
OO
U
MIX-B
SOURCE
PAN
LEVEL
SPLIT EQ
HI/LO EQ
TO MON
MONITOR
LR
PAN
SOLO
-20
OL
LR
+15
OO
U
MIX-B
SOURCE
PAN
LEVEL
SPLIT EQ
HI/LO EQ
TO MON
MONITOR
LR
PAN
SOLO
-20
OL
LR
FLIP SW
FLIP SW
+15
OO
U
MIX-B
SOURCE
PAN
LEVEL
SPLIT EQ
HI/LO EQ
TO MON
MONITOR
LR
PAN
SOLO
-20
OL
LR
+15
OO
U
MIX-B
SOURCE
PAN
LEVEL
SPLIT EQ
HI/LO EQ
TO MON
MONITOR
LR
PAN
SOLO
-20
OL
LR
+15
OO
U
MIX-B
SOURCE
PAN
LEVEL
SPLIT EQ
HI/LO EQ
TO MON
MONITOR
LR
PAN
SOLO
-20
OL
LR
+15
U
MIX-B
SOURCE
PAN
LEVEL
SPLIT EQ
HI/LO EQ
TO MON
MONITOR
LR
PAN
SOLO
-20
OL
LR
FLIP SW FLIP SW
+15
OO
U
MIX-B
SOURCE
PAN
LEVEL
SPLIT EQ
HI/LO EQ
TO MON
MONITOR
LR
PAN
SOLO
-20
OL
LR
+15
OO
U
MIX-B
SOURCE
PAN
LEVEL
SPLIT EQ
HI/LO EQ
TO MON
MONITOR
LR
PAN
SOLO
-20
OL
LR
FLIP SW
FLIP SW
FLIP SW FLIP SW
+15
OO
U
MIX-B
SOURCE
PAN
LEVEL
SPLIT EQ
HI/LO EQ
TO MON
MONITOR
LR
PAN
SOLO
-20
OL
LR
+15
OO
U
MIX-B
SOURCE
PAN
LEVEL
SPLIT EQ
HI/LO EQ
TO MON
MONITOR
LR
PAN
SOLO
-20
OL
LR
FLIP SW
FLIP SW
+15
OO
U
MIX-B
SOURCE
PAN
LEVEL
SPLIT EQ
HI/LO EQ
TO MON
MONITOR
LR
PAN
SOLO
-20
OL
LR
+15
OO
U
MIX-B
SOURCE
PAN
LEVEL
SPLIT EQ
HI/LO EQ
TO MON
MONITOR
LR
PAN
SOLO
-20
OL
LR
FLIP SW
FLIP SW
+15
O
U
MIX-B
SOURCE
PAN
LEVEL
SPLIT EQ
MONITOR
LR
PAN
SOLO
OL
L
+15
OO
U
MIX-B
SOURCE
PAN
LEVEL
SPLIT EQ
HI/LO EQ
TO MON
MONITOR
LR
PAN
SOLO
-20
OL
LR
FLIP SW
FLIP SW
+15
OO
U
MIX-B
SOURCE
LEVEL
SPLIT EQ
MONITOR
LR
PAN
SOLO
-20
OL
LR
FLIP SW
HI/LO EQ
TO MON
O
HI/LO EQ
TO MON
-20
R
PAN
FLIP SW
+15
OO
U
MIX-B
SOURCE
PAN
LEVEL
SPLIT EQ
HI/LO EQ
TO MON
MONITOR
LR
PAN
SOLO
-20
OL
LR
OO
dB
30
20
5
10
L/R
MIX
OO
MUTE
5
10
405080
dB
30
20
5
10
5-6
3-4
1-2
7-8
L/R
MIX
OO
MUTE
5
10
405080
5-6
3-4
1-2
7-8
dB
30
20
5
10
L/R
MIX
O
O
MUTE
5
10
405080
dB
30
20
5
10
L/R
MIX
OO
MUTE
5
10
405080
dB
30
20
5
10
L/R
MIX
OO
MUTE
5
10
405080
dB
30
20
5
10
L/R
MIX
MUTE
5
10
405080
5-6
3-4
1-2
7-8
5-6
3-4
1-2
7-8
5-6
3-4
1-2
7-8
5-6
3-4
1-2
7-8
dB
30
20
5
10
L/R
MIX
OO
MUTE
5
10
405080
dB
30
20
5
10
L/R
MIX
OO
MUTE
5
10
405080
dB
30
20
5
10
L/R
MIX
OO
MUTE
5
10
405080
dB
30
20
5
10
L/R
MIX
OO
MUTE
5
10
405080
5-6
3-4
1-2
7-8
5-6
3-4
1-2
7-8
5-6
3-4
1-2
7-8
5-6
3-4
1-2
7-8
UUUU UUUU
dB
30
20
5
10
L/R
MIX
OO
MUTE
5
10
405080
dB
30
20
5
10
L/R
MIX
OO
MUTE
5
10
405080
dB
30
20
5
10
L/R
MIX
OO
MUTE
5
10
405080
dB
30
20
5
10
L/R
MIX
OO
MUTE
5
10
405080
UUUU
5-6
3-4
1-2
7-8
5-6
3-4
1-2
7-8
5-6
3-4
1-2
7-8
5-6
3-4
1-2
7-8
dB
30
20
5
10
L/R
MIX
OO
MUTE
5
10
405080
dB
30
20
5
10
L/R
MIX
OO
MUTE
5
10
405080
UU
5-6
3-4
1-2
7-8
5-6
3-4
1-2
7-8
OO
UU
dB
30
20
5
10
OO
5
10
405080
dB
30
20
5
10
OO
5
10
405080
dB
30
20
5
10
O
O
5
10
405080
dB
30
20
5
10
OO
5
10
405080
1234
UUUU
dB
30
20
5
10
OO
5
10
405080
dB
30
20
5
10
OO
5
10
405080
dB
30
20
5
10
OO
5
10
405080
dB
30
20
5
10
OO
5
10
405080
5678
UUUU
MIX
dB
30
20
5
10
OO
5
10
405080
U
SOLO SOLO SOLO SOLO SOLO SOLO SOLO SOLO
TALKBACK
MIC
LEFT/RIGHT
MONO
L+R
RLRLRLR
MONO
L+R
MONO
L+R
MONO
L+R
MONO
L+R
ASSIGN
MONO
L+R
MONO
L+R
L
MONO
L+R
ASSIGN ASSIGN ASSIGN ASSIGN ASSIGNASSIGNASSIGN
MIX
MIX MIX MIX
LRLRLRLR
MAIN
OR SOLO LEVEL
1
9
17
2
10
18
3
11
19
4
12
20
5
13
21
6
14
22
7
15
23
8
16
24
10
+
74202107
10
203040
10
+
74202107
10
203040
10
+
74202107
10
203040
10
+
74202107
10
203040
10
+
74202
10710
203040
10
+
74202107
10
203040
10
+
74202107
10
203040
10
74202107
10
203040
22
+
MIX-B TO
L/R MIX
SOLO
AUX SEND 3/4
MIX-B
CNTRL RM
AUX SEND 5/6
EXTERNAL
SOURCE
MIX B
MONITOR
PHONES 1
PHONES
LEVEL
SOLO
AUX SEND 3/4
MIX-B
CNTRL RM
AUX SEND 5/6
EXTERNAL
SOURCE
PHONES 2
PHONES
LEVEL
ASSIGN
MIX-B
LEVEL
+15
OO
U
OOOO
MONO
TAPE SUB
MASTERS
AUX SEND 1
2-TK
MIX-B
L/R MIX
EXTERNAL
SOURCE
MONITOR
CNTRL RM
STUDIO
SOLO TALKBACK
LEVEL LEVEL
RUDE
SOLO LITE
AUX SEND 2
PHONES
&
STUDIO
+15
OO
U
+15
OO
U
+15
OO
U
SOLO
SOLO
SOLO
SOLO
AUX SENDS
STEREO AUX RETURNS
4
3
5
6
PHONES
2
L/R MIX
PHONES
1
PHONES
2
L/R MIX
3
4
LEVEL
ASSIGN
ASSIGN
LEVELLEVEL
PHONES
1
6
+15
OO
U
+15
OO
U
+15
OO
U
+15
OO
U
+20
OO
U
+20
OO
U
5
+20
OO
U
+20
OO
U
SOLO
SOLO
SOLO
SOLO
SOLO
SOLO
LEVEL
L/R MIX
1-2
3-4
5-6
7-8
L/R MIX
SOLO
1-2
3-4 5-6 7-8
1
2
ASSIGN
ASSIGN
+20
OO
U
+20
OO
U
LR
LR
SOLO
LEVEL BALANCE
SOLO
SOLO
2
1
+15
OO
U
+15
OO
U
LEVEL
POWER
EXTERNAL
INPUT
MIX-B
OUTPUT
AUX SEND
3
3
R
L
4
4
R
R
5
5
R
L
6
6
R
R
L
7
L
L
L
R
8
R
R
R
SUBMASTER INSERT
AUX RETURN
CNTRL
RM OUTPUT
STUDIO
OUTPUT
MAIN MIX
MAIN
INSERTS
3456
PHONES
12
MONO
L
MONO
L
MONO
L
MONO
L
MONO
1
1
R
L
2
2
R
R
2-TRACK
INPUT
12
MONO
L
MONO
L
MONO
TIP=OUT RING=IN
PHANTOM
POWER
TRIM
GAIN
TRIM TRIM TRIM TRIM TRIM TRIM
GAIN GAIN
TRIM TRIM TRIM TRIM
TRIM
7
8
5
6
3
4
1
2
MIC/LINE
LINE
IN
DIRECT
OUT
INSERT
BAL-
UNBAL
TIP = OUT
RING = IN
LINE
IN
DIRECT
OUT
INSERT
BAL-
UNBAL
TIP = OUT
RING = IN
LINE
IN
DIRECT
OUT
INSERT
BAL-
UNBAL
TIP = OUT
RING = IN
LINE
IN
DIRECT
OUT
INSERT
BAL-
UNBAL
TIP = OUT
RING = IN
LINE
IN
DIRECT
OUT
INSERT
BAL-
UNBAL
TIP = OUT
RING = IN
LINE
IN
DIRECT
OUT
INSERT
BAL-
UNBAL
TIP = OUT
RING = IN
LINE
IN
DIRECT
OUT
INSERT
BAL-
UNBAL
TIP = OUT
RING = IN
LINE
IN
DIRECT
OUT
INSERT
BAL-
UNBAL
TIP = OUT
RING = IN
MIC/LINE
MIC/LINE
MIC/LINE
MIC/LINE
MIC/LINE
MIC/LINE
MIC/LINE
CHANNEL
2
3
4
5
6
7
8
1
TAPE
MIC/LINE
+4
–10
48
dB
40
dB
U
L
I
N
E
S
E
N
S
I
T
I
V
I
T
Y
M
I
C
/
L
I
N
E
G
A
I
N
TAPE
MIC/LINE
+4
–10
48
dB
40
dB
U
L
I
N
E
S
E
N
S
I
T
I
V
I
T
Y
M
I
C
/
L
I
N
E
G
A
I
N
TAPE
MIC/LINE
+4
–10
48
dB
40
dB
U
L
I
N
E
S
E
N
S
I
T
I
V
I
T
Y
M
I
C
/
L
I
N
E
G
A
I
N
TAPE
MIC/LINE
+4
–10
48
dB
40
dB
U
L
I
N
E
S
E
N
S
I
T
I
V
I
T
Y
M
I
C
/
L
I
N
E
G
A
I
N
TAPE
MIC/LINE
+4
–10
48
dB
40
dB
U
L
I
N
E
S
E
N
S
I
T
I
V
I
T
Y
M
I
C
/
L
I
N
E
G
A
I
N
TAPE
MIC/LINE
+4
–10
48
dB
40
dB
U
L
I
N
E
S
E
N
S
I
T
I
V
I
T
Y
M
I
C
/
L
I
N
E
G
A
I
N
TAPE
MIC/LINE
+4
–10
48
dB
40
dB
U
L
I
N
E
S
E
N
S
I
T
I
V
I
T
Y
M
I
C
/
L
I
N
E
G
A
I
N
TAPE
MIC/LINE
+4
–10
48
dB
40
dB
U
L
I
N
E
S
E
N
S
I
T
I
V
I
T
Y
M
I
C
/
L
I
N
E
G
A
I
N
FLIP
GAIN
TRIM
FLIP FLIP
GAIN
FLIP
GAIN
FLIP
GAIN
FLIP
GAIN
FLIP
GAIN
FLIP
GAIN
AUX
PRE
1
2
4
3
5
6
MIX-B
CHANNEL
PRE
SHIFT
SOURCE
+15
OO
U
+15
OO
U
+15
OO
U
+15
OO
U
AUX
AUX
PRE
1
2
4
3
5
6
MIX-B
CHANNEL
PRE
SHIFT
SOURCE
+15
OO
U
+15
OO
U
+15
OO
U
+15
OO
U
AUX
1
2
AUX
PRE
1
2
4
3
5
6
MIX-B
CHANNEL
PRE
SHIFT
SOURCE
+15
OO
U
+15
OO
U
+15
OO
U
+15
OO
U
AUX
AUX
PRE
1
2
4
3
5
6
MIX-B
CHANNEL
PRE
SHIFT
SOURCE
+15
OO
U
+15
OO
U
+15
OO
U
+15
OO
U
AUX
3
4
AUX
PRE
1
2
4
3
5
6
MIX-B
CHANNEL
PRE
SHIFT
SOURCE
+15
OO
U
OO
U
+15
OO
U
+15
OO
U
AUX
PRE
1
2
4
3
5
6
MIX-B
CHANNEL
PRE
SHIFT
SOURCE
+15
OO
U
+15
OO
U
+15
OO
U
+15
OO
U
AUX
56
AUX
PRE
1
2
4
3
5
6
MIX-B
CHANNEL
PRE
SHIFT
SOURCE
+15
OO
U
+15
OO
U
+15
OO
U
+15
OO
U
AUX
AUX
PRE
1
2
3
5
6
MIX-B
CHANNEL
PRE
SHIFT
SOURCE
+15
OO
U
+15
OO
U
OO
U
+15
OO
AUX
7
8
+15
AUX
4
+15
U
HI
MID
BAND
WIDTH
500 18k
3k
FREQ
–15 +15
U
1k 5k
3
2
12
NORMAL
HI
MID
BAND
WIDTH
500 18k
3k
FREQ
–15 +15
U
1k 5k
3
2
12
NORMAL
OCTAVES
OCTAVES
HI
MID
BAND
WIDTH
500 18k
3k
FREQ
–15 +15
U
1k 5k
3
2
12
NORMAL
HI
MID
BAND
WIDTH
500 18k
3k
FREQ
–15 +15
U
1k 5k
3
2
12
NORMAL
OCTAVES
OCTAVES
HI
MID
BAND
WIDTH
500 18k
3k
FREQ
–15 +15
U
1k 5k
3
2
12
NORMAL
HI
MID
BAND
WIDTH
500 18k
3k
FREQ
–15 +15
U
1k 5k
3
2
12
NORMAL
OCTAVESOCTAVES
HI
MID
BAND
WIDTH
500 18k
3k
FREQ
–15 +15
U
1k 5k
3
2
12
NORMAL
HI
MID
BAND
WIDTH
500 18k
3k
FREQ
–15 +15
U
1k 5k
3
2
12
NORMAL
OCTAVES
OCTAVES
1
1
1
1
1
1
1
1
12k
EQ
LOW CUT
EQ IN
LO
MID
HI
FREQ
75 Hz
18dB/oct
45 3k
–15 +15
80
U
LO
–15 +15
U
–15 +15
U
250
220
12k
EQ
LOW CUT
EQ IN
LO
MID
HI
FREQ
75 Hz
18dB/oct
45 3k
–15 +15
80
U
LO
–15 +15
U
–15 +15
U
250
220 350
12k
EQ
LOW CUT
EQ IN
LO
MID
HI
FREQ
75 Hz
18dB/oct
45 3k
–15 +15
80
U
LO
–15 +15
U
–15 +15
U
250
220 350
12k
EQ
LOW CUT
EQ IN
LO
MID
HI
FREQ
75 Hz
18dB/oct
45 3k
–15 +15
80
U
LO
–15 +15
U
–15 +15
U
250
220 350
12k
EQ
LOW CUT
EQ IN
LO
MID
HI
FREQ
75 Hz
18dB/oct
45 3k
–15 +15
80
U
LO
–15 +15
U
–15 +15
U
250
220 350
12k
EQ
LOW CUT
EQ IN
LO
MID
HI
FREQ
75 Hz
18dB/oct
45 3k
–15 +15
80
U
LO
–15 +15
U
–15 +15
U
250
220 350
12k
EQ
LOW CUT
EQ IN
LO
MID
HI
FREQ
75 Hz
18dB/oct
45 3k
–15 +15
80
U
LO
–15 +15
U
–15 +15
U
250
220 350
12k
EQ
LOW CUT
EQ IN
LO
MID
HI
FREQ
75 Hz
18dB/oct
45 3k
–15 +15
80
U
LO
–15 +15
U
–15 +15
U
250
220 350
350
+15
OO
U
MIX-B
SOURCE
PAN
LEVEL
SPLIT EQ
HI/LO EQ
TO MON
MONITOR
LR
PAN
SOLO
-20
OL
LR
+15
OO
U
MIX-B
SOURCE
PAN
LEVEL
SPLIT EQ
HI/LO EQ
TO MON
MONITOR
LR
PAN
SOLO
-20
OL
LR
FLIP SW
FLIP SW
+15
OO
U
MIX-B
SOURCE
PAN
LEVEL
SPLIT EQ
HI/LO EQ
TO MON
MONITOR
LR
PAN
SOLO
-20
OL
LR
+15
OO
U
MIX-B
SOURCE
PAN
LEVEL
SPLIT EQ
HI/LO EQ
TO MON
MONITOR
LR
PAN
SOLO
-20
OL
LR
FLIP SW
FLIP SW
+15
O
U
MIX-B
SOURCE
PAN
LEVEL
SPLIT EQ
MONITOR
LR
PAN
SOLO
OL
L
+15
OO
U
MIX-B
SOURCE
PAN
LEVEL
SPLIT EQ
HI/LO EQ
TO MON
MONITOR
LR
PAN
SOLO
-20
OL
LR
FLIP SW
FLIP SW
+15
OO
U
MIX-B
SOURCE
LEVEL
SPLIT EQ
MONITOR
LR
PAN
SOLO
-20
OL
LR
FLIP SW
HI/LO EQ
TO MON
O
HI/LO EQ
TO MON
-20
R
PAN
FLIP SW
+15
OO
U
MIX-B
SOURCE
PAN
LEVEL
SPLIT EQ
HI/LO EQ
TO MON
MONITOR
LR
PAN
SOLO
-20
OL
LR
dB
30
20
5
10
L/R
MIX
OO
MUTE
5
10
405080
dB
30
20
5
10
5-6
3-4
1-2
7-8
L/R
MIX
OO
MUTE
5
10
405080
5-6
3-4
1-2
7-8
dB
30
20
5
10
L/R
MIX
OO
MUTE
5
10
405080
dB
30
20
5
10
L/R
MIX
OO
MUTE
5
10
405080
dB
30
20
5
10
L/R
MIX
OO
MUTE
5
10
405080
dB
30
20
5
10
L/R
MIX
MUTE
5
10
405080
5-6
3-4
1-2
7-8
5-6
3-4
1-2
7-8
5-6
3-4
1-2
7-8
5-6
3-4
1-2
7-8
dB
30
20
5
10
L/R
MIX
OO
MUTE
5
10
405080
dB
30
20
5
10
L/R
MIX
OO
MUTE
5
10
405080
5-6
3-4
1-2
7-8
5-6
3-4
1-2
7-8
UUUU UUUU
OO
PHANTOM
POWER
TRIM
GAIN
TRIM TRIM TRIM TRIM TRIM
TRIM
OO
1
CAUTION AVIS
RISK OF ELECTRIC
RISQUE DE
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK
NO USER-SERVICEABLE PARTS INSIDE
REFER SERVICING TO QUALIFIED PERSONNEL
ATTENTION: POUR EVITER LES RISQUES DE CHOC
ELECTRIQUE, NE PAS ENLEVER LE COUVERCLE. AUCUN
ENTRETIEN DE PIECES INTERIEURES PAR L'USAGER. CONFIER
L'ENTRETIEN AU PERSONNEL QUALIFIE.
AVIS: POUR EVITER LES RISQUES D'INCENDIE OU
D'ELECTROCUTION, N'EXPOSEZ PAS CET ARTICLE
The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure, that may be of sufficient magnitude to constitute a risk of electric shock to persons.
Le symbole éclair avec point de flèche à l'intérieur d'un triangle équilatéral est utilisé pour alerter l'utilisateur de la présence à l'intérieur du coffret de "voltage dangereux" non isolé d'ampleur suffisante pour constituer un risque d'éléctrocution.
The exclamation point within an equilateral triangle is intended to alert the user of the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.
Le point d'exclamation à l'intérieur d'un triangle équilatéral est employé pour alerter les utilisateurs de la présence d'instructions importantes pour le fonctionnement et l'entretien (service) dans le livret d'instruction accompagnant l'appareil.
DO NOT OPEN
CHOC
NE PAS OUVRIR
DO NOT REMOVE COVER (OR BACK)
A LA PLUIE OU A L'HUMIDITE
SHOCK
ELECTRIQUE

SAFETY INSTRUCTIONS

1. Read Instructions Read all the safety and operation instructions before operating the 8Bus Console and External Power Supply.
2. Retain Instructions Keep the safety and operating instructions for future reference.
3. Heed Warnings Follow all warnings on the 8Bus Console and External Power Supply and in these operating instructions.
4. Follow Instructions Follow all operating and other instructions.
5. Water and Moisture Do not use the 8Bus Console and
External Power Supply near water - for example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, near a swimming pool, swamp or salivating St. Bernard dog, etc.
6. Heat Locate the 8Bus Console and External Power Supply away from heat sources such as radiators, or other devices that produce heat.
7. Power Sources Connect the 8Bus Console and External Power Supply only to a power supply of the type described in these operation instructions or as marked on the 8Bus Console and External Power Supply.
8. Power Cord Protection Route power supply cords so that they are not likely to be walked upon or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit the 8Bus Console and External Power Supply.
9. Object and Liquid Entry Do not drop objects or spill liquids into the inside of the 8Bus Console and External Power Supply.
10. Damage Requiring Service The 8Bus Console and External Power Supply should be serviced only by qualified service personnel when:
A. 8Bus Console and External Power Supply power-supply cord or the plug has been damaged; or
B. Objects have fallen, or liquid has spilled into the 8Bus Console and External Power Supply; or
C. The 8•Bus Console and External Power Supply have been exposed to rain; or
D. The 8•Bus Console and External Power Supply does not appear to operate or exhibits a marked change in performance; or
E. The 8•Bus Console and External Power Supply has been dropped, or its chassis damaged.
11. Servicing — Do not attempt to service the 8•Bus Console and External Power Supply beyond those means described in this operating manual. All other servicing should be referred to the Mackie Service Department.
12. To prevent electric shock, do not use the 8•Bus Console and External Power Supply polarized plug with an extension cord, receptacle or other outlet unless the blades can be fully inserted to prevent blade exposure.
Pour prévenir les chocs électriques ne pas utiliser cette fiche polariseé avec un prolongateur, un prise de courant ou une autre sortie de courant, sauf si les lames peuvent être insérées à fond sans laisser aucune pariie à découvert.
13 . Grounding or Polarization — Do not defeat the grounding or polarization of the 8Bus Console and External Power Supply.
This apparatus does not exceed the Class A/Class B (whichever is applicable) limits for radio noise emissions from digital apparatus as set out in the radio interference regulations of the Canadian Department of Communications.
ATTENTION Le présent appareil numérique n’émet pas de bruits radioélectriques dépassant las limites applicables aux appareils numériques de class A/de class B (selon le cas) prescrites dans le règlement sur le brouillage radioélectrique édicté par les ministere des communications du Canada.
14 . Exposure to extremely high noise levels may cause permanent hearing loss. Individuals vary considerably in susceptibility to noise-induced hearing loss, but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a period of time. The U.S. Governments Occupational Safety and Health Administration (OSHA) has specified the permissible noise level exposures shown in the following chart.
According to OSHA, any exposure in excess of these permissible limits could result in some hearing loss. To ensure against potentially dangerous exposure to high sound pressure levels, it is recommended that all persons exposed to equipment capable of producing high sound pressure levels use hearing protectors while the equipment is in operation. Ear plugs or protectors in the ear canals or over the ears must be worn when operating the equip­ment in order to prevent a permanent hearing loss if exposure is in excess of the limits set forth here.
Duration Per Day Sound Level dBA, Typical
In Hours Slow Response Example
8 90 Duo in small club 692 4 95 Subway Train 397 2 100 Very loud classical music
1.5 102 1 105 Patrice screaming at Ron about deadlines
0.5 110
0.25 or less 115 Loudest parts at a rock concert
WARNING To reduce the risk of fire or electric shock, do not expose this appliance to rain or moisture.
Part No. 820-007-90 Rev. A 06/03
©1995-2003 Mackie Designs Inc. All Rights Reserved.
IMPORTANT SENSITIVITY
ADJUSTMENT PROCEDURE!
To fully achieve the Mackie 8•Bus console’s impressive headroom and specs, you should “tune” channel sensitivity for each channel.
FOLLOW THIS PROCEDURE FOR EACH CHANNEL IN USE:
1. Assign signal to channel fader:
If channel will be used with a micro–
phone, MIC/LINE switch should be up & FLIP switch should be up.
If channel will be used with line input,
MIC/LINE switch should be down & FLIP switch should be up.
If channel will be used with a tape
input keep the FLIP switch down.
2. Set channel strip controls as follows:
TRIM pot all the way counterclockwise
(+4dB)
AUX SEND controls all the way counter-
clockwise (off)
EQ switch up
LOW-CUT switch either on or off
(on recommended for mic inputs)
Pan hard left or right
Channel fader at UNITY
SOLO switch down
3. Make appropriate “noise” into the channel
input. For example, have a performer play/ sing/strike something or someone, etc., at the level at which they’re going to record or perform. Don’t just play a single sustained note, but rather, jam away as you would be during recording or performance. If the channel is being used for a tape input
during mixdown, roll an already-recorded track from your recorder.
4. The channel’s –20dB LED may light. The L/R main meters will show the actual internal operating level of soloed signals. Now you will optimize levels.
5. For mic or line inputs, adjust the TRIM
control clockwise to get peaks that regularly hit 0dB on the L/R meters. For mic inputs this may require full CW rotation depending on the sensitivity of the mic.
6. If desired (optional):
Press the EQ switch in.
Adjust the channel strip’s EQ to about
what you will be using during the session.
Re-perform Step 5.
7. Return the channel strip’s SOLO button to
its up position.
8. Repeat Steps 1-7 on the next channel that
is being used.
Please put your serial number here for future reference (i.e., insurance claims, tech support, return authorization, gloating privileges, etc.):
Serial #
24•8 32•8
Owner’s
Manual Version
Rev. A
06/03
PLEASE! SAVE THE
SHIPPING BOX!
Yes, we know it’s only slightly smaller than a doublewide mobile home, but you will need the entire carton and internal foam if your console ever needs service at some time in the future.
If your kids make the box into a fort and cut holes in it — or if you stuff it in the dumpster of the fast-food place next door to your studio, we may have to sell and ship you another packing box later on. Don’t end up buying an empty box!
1
TABLE OF CONTENTS
SECTION 2* — Panel Layout and Function .. 4
INPUT CHANNELS ....................4
Fader .............................. 4
Mute .............................. 4
Pan & Assignment switches 4
–20 & OL LEDs ................. 5
Channel Solo .................... 5
Phantom power ................5
Trim .............................. 5
Mic/Line switch ................5
The Flip Switch:
Mic/Line or Tape? ............ 6
MIX-B / Monitor ............... 6
MIX-B Pan ........................ 6
MIX-B Level ...................... 6
MIX-B Split ....................... 7
EQ Section ........................ 7
HI Mid EQ ...................7
LO Mid EQ .................. 8
HI EQ ..........................8
LO EQ.......................... 8
EQ In/Out .................... 8
LO cut ......................... 8
AUX Sends ........................ 8
AUX 1 & 2 .................... 9
Pre (1&2) ................... 9
AUX 3, 4, 5, 6 ............... 9
Shift ............................. 9
Source .........................9
Pre (3-6) ..................... 9
OUTPUT SECTION ............. 10
8•Bus Faders ................. 10
L Mix and R Mix ............10
Mono L & R .....................10
Solo ............................ 10
L/R Mix Fader ................ 10
Metering Bus
Meters 1-8 ................. 11
Main/Solo Meters ..... 11
AUX Sends ...................... 11
AUX Solo ......................... 12
Stereo AUX Returns ....... 12
Returns 1 & 2 ............ 12
Assign (1&2) ............. 12
Returns 3 & 4 ............ 12
Assign (3&4) ............. 12
Returns 5 & 6 ............ 12
MIX-B/Monitor .......... 12
Phones ....................... 13
Monitor ..................... 13
Solo ........................... 13
Talkback ................... 13
Jack panels (input strip
and Master output) ....... 14
Input Strip ................ 14
Phantom power ........ 14
BNC sockets .............. 14
Mic In ........................ 14
Line In ....................... 14
Direct Out ................. 14
Channel Insert ..........14
Output Panel .................. 15
Submaster Inserts .... 15
AUX Sends ................ 15
AUX Returns ............. 15
Main Inserts .............. 15
Control Room Output 15
Main Mix ................... 16
REAR PANEL
CONNECTIONS .................. 17
SECTION 3 —
General Information ............. 19
LEVELS ...............................19
BUSES ................................ 20
SENDS & RETURNS .......... 20
SOLO ................................... 20
EQ ....................................... 20
CONNECTORS ....................22
A BIT MORE ON
MIX-B/FLIP ........................ 22
SECTION 4 —
Recording ............................23
RECORDING OVERVIEW .. 23
SETUP ................................. 23
RECORDING &
OVERDUBBING ..................23
MIXING OVERVIEW .......... 27
MIXING SETUP .................. 28
DOING THE MIX ................28
SECTION 5: PA and Sound Reinforcment
Applications .........................37
SETUP ................................. 37
HOUSE AND MONITOR MIX
TOGETHER ........................ 42
MAKING A SIMULTANEOUS
RECORDING .......................42
HOUSE MIX ONLY or
MONITOR MIX ONLY .........42
FINDING MORE INPUTS ... 43
MIX-B Output ........... 16
Phones ....................... 16
Studio Output ........... 16
2-Track Input and
External Input .......... 16
Tape Returns .................. 17
Tape Return
Operating Level .............. 17
Submaster/Tape Outputs17 Submaster/Tape Output
Operating Level .............. 17
Main Bal. Outputs ......... 18
Expander Port................ 18
DC Power in ................... 18
Noise ................................ 19
Headroom ....................... 19
Unity Gain ...................... 19
Metering.......................... 19
Using Buses .................... 23
Monitoring ..................... 23
Cue Mix ........................... 23
Wet or Dry Monitor? ...... 24
Let’s Record! ................... 27
Overdub, Anyone? .......... 27
Pick a Model ................... 28
Consider Compression .. 28
Using External Processing 28
Insert Devices ................. 28
Send / Return Devices ....35
Using Subgroups ............35
Finding More Inputs:
Mix-B to L & R Buses .....35
Monitoring and Levels .. 36
About Automation ......... 36
Headphones .................... 42
Mic Splitters ................... 43
APPENDIX A: Connections .. 44
“XLR” CONNECTORS ......... 44
1/4" TRS PHONE PLUGS
& JACKS ............................. 44
1/4" TS PHONE PLUGS
& JACKS ............................. 44
SWITCHED 1/4"
PHONE JACKS ................... 44
RCA PLUGS & JACKS ........ 45
UNBALANCING A LINE ..... 45
SPECIAL CONNECTIONS .. 45
TRS Send/Return
Insert Jacks .................... 45
Using the send
only of an
insert jack ............. 45
Using return only ...... 46
AUX RETURNS: Mono, Stereo,
Whatever ......................... 46
MULTS AND “Y”s ................ 46
APPENDIX B: Options,
Add-Ons and Extra Stuff ...... 47
METER BRIDGE ................ 47
SIDECAR ............................ 47
UN-CIGARETTE LIGHTER .. 47
MIXING SHOES ................. 47
APPENDIX C: Specifications .. 48
GAIN/LEVEL CHART............48
DIMENSIONS ..................... 49
BLOCK DIAGRAM .............. 52
SERVICE .............................. 54
TROUBLESHOOTING ........ 54
FACTORY SERVICE ........... 54
SERVICE FROM AN AUTHORIZED SERVICE
CENTER .............................. 55
TRACK SHEET .................... 56
8•BUS LIMITED WARRANTY 61
* Why did we start with Section 2? As a
matter of policy, our Manual Table of Contents always skip things that are on the facing page to the actual listing. Seems like we’re stating the obvious to tell you that the Introduction is next to your right hand.
2

SECTION 1: Introduction

The Mackie 8•Bus Series is a flexible ‘in-line monitoring’ style console. They are available with 24 or 32 microphone/line inputs fed into 8 submix buses, 2 stereo mix buses and 6 auxiliary send buses. There are 24 or 32 tape return inputs for multitrack monitoring and mixing or for use as additional line inputs. The 8•Bus Series is de­signed to be the mixing and communications hub in a multitrack recording studio and is also an ex­cellent choice for sound reinforcement work. Numerous inputs, flexible sends and terrific EQ combined with the legendary Mackie headroom and noise floor specs make your work easy. It’s clean. It’s quiet. It’s packed with features. It’s af­fordable… So pat yourself on the back! You’re doing something sensible here!
IF YOU IGNORE MANUALS...
You’ll probably ignore this one, too. That’s OK, the crack Mackie Documentation Department will get to go on their annual “Typing Without Walls” outing at campsite four in the Woodinville RV Park anyway.
But this is a really great manual! It’s got Where It Is and What It Does and How To Use It covered totally, with pictures and diagrams and absolutely no pop quizzes.
Do yourself a favor and at least check out Section 2 and the block diagram for starters. The 8•Bus Series has a number of routing tricks that could be hard to suss out without a guide. Then, if that’s all you can take without pumping some sound through the console, put the manual in the bathroom for future reference or read it while you eat your lunch.
If you’re even more terminally impatient, try to look for these two icons:
PANEL LAYOUT
AND FUNCTION
GENERAL INFORMATION
RECORDING
PA AND SOUND
REINFORCEMENT
APPENDICES
(CONNECTIONS, ADD-ONS, SPECIFICATIONS, ETC.)
SERVICE
MASTER TRACK SHEETS
FOR DUPLICATION
LAYOUT
AND
FUNCTION
GENERAL
INFO
RECORDING
PA & SR
ADD-ONS
SPECS
ETC.
SERVICE
TRACK
SHEETS
They cover information that is absolutely criti­cal or is unique to the 8•Bus Series. At some point, it’s still a good idea to browse through the rest of the manual.
In addition, sections marked with the A CLOSER LOOK icon include in-depth information… or at least our own opinions.
BLOCK DIAGRAM
3
BLOCK
DIAGRAM
EQ IN
75 Hz
18dB/oct
LOW CUT
LR
U
OO
+15
HI/LO EQ TO MIX-B
MIX-B
MONITOR
SPLIT EQ
FLIP SW
CHANNEL
PAN
SOLO

MUTE

24
dB
10

SECTION 2: Panel Layout and Function

PAN
OVERVIEW
LEVEL
SOURCE
OL
-20
The panel layout of the Mackie 8•Bus Series follows the traditional arrangement: input chan­nel strips to the left, with a master output/ monitoring/cue section to the right. Additionally, most of the Mackie input/output jack panel is located at the top of the mixing panel, for easy accessibility and patching. The tape outputs and inputs are on the rear panel.
INPUT CHANNELS (CHANNEL STRIPS)
8•Bus consoles are identical, and contain all of the level, assignment and equalization controls for each input channel. This section describes the controls and functions of each feature of an input channel in detail.

FADER

with a precise logarithmic taper and attenuation in dBs printed along the slot for exact and repeatable level adjustments. The fader affects either the mic or line input to the channel (for recording) or the tape return to the channel (for mixing), depending on
The 24 or 32 input channel strips on the Mackie
The channel fader (1) is 100 millimeters long,
the position of the FLIP switch.
5
U
5
10
20
30
40
50
60
OO
1-2
3-4
MUTE
The MUTE switch, located at the top of the
fader (2), turns off the primary outputs of the
5-6
7- 8
channel: the eight buses, the L & R buses, the channel solo, the direct output and the post­fader AUX sends. Pre-fader aux sends are not muted. With the exception of lighting the mute
L/R MIX
LED, pushing the MUTE switch is the same as pulling the fader all the way down.
GOURMET PAN CONTROL AND ASSIGNMENT SWITCHES
CHANNEL INPUT/OUTPUT
MASTER
I/O
The PAN control (3), immediately above the fader, pans the channel signal between the two sides of the L/R Mix buses, and also between odd and even pairs of buses 1 through 8.
CHANNEL STRIPS
The actual bus assignment of the PAN control depends on the positions of the five assignment
MASTER
SECTION
switches located along the length of the fader. With no switches depressed, the PAN control has no effect (well, unless you solo the channel; it still pans the solo).
Pushing the L/R MIX switch (4) assigns the PAN to the main L /R Mix buses. Panning from L to R moves the sound smoothly (with constant loudness)
CHANNEL INPUT/OUTPUT
from the left channel to the right channel. Assigning the PAN to a pair of the 8 buses has a similar effect.
MASTER
I/O
CHANNEL STRIPS
MASTER
SECTION
For example, pushing the 1-2 switch assigns the PAN to buses 1 and 2, and panning L to R will move the sound from bus 1 to bus 2 (from odd to even).
If you want to equally assign a channel to both buses 1 and 2, leave the PAN control at the top, or center, of its travel. If you only want bus 2, turn the PAN control fully clockwise (to the right).
Other comparably-priced consoles provide as little as 50dB attenuation/separation. We use active, buffered circuitry and a custom-taper potentiometer
4
to achieve 87dB attenuation. You get far better channel separation plus freedom from level shifts caused by channel assignment and panning. In addition, our pan pots are constant loudness. When you sit between a pair of monitors and pan from side to side, the apparent volume at your ears should stay the same, no matter where the signal is positioned. Our special pan circuitry maintains consistent apparent energy whether the pot is dead center, hard left or hard right.
20 AND OL LEDs
The two LEDs (5) next to the PAN control check the channel strip signal level at three important cir­cuit points: at the output of the mic/line preamp, after the EQ and after the channel fader amplifier.
The green LED marked –20 is there to assure you that, yes, something is plugged into the channel (and yes, it does have some output). Most signals more interesting than tape noise will cause the green LEDs to flicker, so they give you a good visual indication of which channels are active. Any peaks higher than –20dBu (@ 1kHz) trigger the indicator. When we say “channel”, we mean the signal going through the channel fader… but not the signal going through the MIX B Section. Please refer to the MIX B section of this manual, starting on the next page, for more details.
The red LED, labeled OL for overload, lights when the signal level is high enough to cause clip­ping at any of the three test points. In normal operation it will almost never light. If it is flashing at you, your level in that channel is much too high. You need to turn something down.
• First try the mic/line trim. If that has no effect,
• Turn down the EQ and/or the insert device,
and if that doesn’t fix it,
• Turn down the channel. If this doesn’t fix it, your
input signal is too hot (gasp). Use an external pad to reduce the level (see the sidebar on page 24).

CHANNEL SOLO

The channel SOLO switch (6) assigns the output of the channel PAN control to the stereo solo buses and disconnects all other sources from the monitor section. SOLO does not interrupt the eight Submas­ters, the L/R Mix or the AUX sends, and can be used at any time without affecting the recording process.
SOLO is handy for spot-checking the presence and quality of individual inputs while setting up, recording and mixing. More than one SOLO switch may be pressed at the same time, allowing you to listen to the blend of any combination of channels throughout the console in stereo.
On the Mackie 8•Bus console, the SOLO assignments are stereo except for the AUX sends. SOLO maintains the perspective set up with the PAN controls. When any SOLO button on the con­sole is depressed, its associated SOLO LED will glow steadily, and the RUDE SOLO LITE above the 8•Bus LED meters blinks annoyingly, serving as a reminder with an attitude.
The channel SOLO function is normally post­fader/post-mute, but can be modified for PFL or Pre-Fade (and pre-mute) Listen. See Appendix B: Options, Add-Ons, and Extra Stuff.
Note: All the SOLO buttons on the 8•Bus Series operate in the same way (although they’re not all stereo like the channel SOLO). SOLO does not interrupt recording; it only affects the control room monitor.
HIGHLY, MEGA-MONDO­IMPORTANT: SOLO is
intended for more than just “soloing.” It is THE way to set
levels for best noise and head­room. Complete instructions on proper level setting using SOLO are in Section 3: General In­formation, starting on page 19.

PHANTOM POWER

CAUTION: After switching PHANTOM Power on or off, wait 1 minute before changing any mic/line switch settings in that 8-channel block.
At the top of every eight channels is a PHANTOM Power switch (7). Pressing it sends +48VDC to the eight XLR sockets to the switch’s left. For instance, depressing the PHANTOM switch above Channel 8 sends phantom power to the XLRs on channels 1 through 8. NOTE: It is always a good idea to check with the Mic manufacturer to verify phantom power requirements.

TRIM

The TRIM control (8) sets the gain of the input amplifier for the MIC and LINE inputs. Proper setting of the TRIM control is essential for good noise and headroom performance. Trim pot settings may vary widely depending upon the input level. The output of different key­boards, drum machines, guitar effects boxes, etc., vary from extremely weak to so hot that they can practically be connected directly to speakers. See pages 1, 19, or 24 for advice.

MIC/LINE SWITCH

Now we’ve jumped back to the top of the strip. Sorry, but logically the input to the chan­nel is the next thing to talk about. That’s because it’s the source of the signal applied to the channel fader and PAN control.
PHANTOM
POWER
CHANNEL
24
G
A
C
I
I
N
M
dBV
–10
S
E
N
I
L
+4
-40
dBV
10
dB
50
dB
TRIM
GAIN
U
–15 +15
3k
1k 5k
500 18k
2
1
3
12
U
–15 +15
250
220 350
45 3k
U
–15 +15
U
–15 +15
EQ
75 Hz
18dB/oct
LR
U
OO
+15
HI/LO EQ
TO MIX-B
MIX-B
MONITOR
FLIP SW
CHANNEL
PAN
SOLO
MIC/LINE
E
N
S
I
T
I
V
I
T
Y
LINE
IN
BAL-
UNBAL
DIRECT
OUT
INSERT
TIP = OUT RING = IN
CHANNEL
24
MIC/LINE
TAPE
FLIP
HI
MID
FREQ
NORMAL
BAND
WIDTH
OCTAVES
LO
MID
FREQ
HI
12k
LO
80
EQ IN
LOW CUT
PAN
LEVEL
SPLIT EQ
SOURCE
OL
-20
5
LOW CUT
PHANTOM
POWER
The MIC/LINE switch (9) is located way up amongst the channel jacks. It selects whether the MIC jack (pin 2=hot[+], pin 3=cold[–], pin 1=shield) or the LINE jack (balanced 1/4" phone… tip=hot, ring=cold, sleeve=shield) is
CHANNEL
connected to the input amplifier.
24
MIC/LINE
LINE
BAL-
UNBAL
DIRECT
OUT
INSERT
TIP = OUT RING = IN
CHANNEL
24
G
A
C
I
I
N
M
–10
dBV
S
E
N
E
S
N
I
I
T
L
I
V
I
T
Y
+4
-40
dBV
MIC/LINE
10
dB
50
dB
TAPE
TRIM
GAIN
LR
U
LEVEL
OO
+15
HI/LO EQ
TO MIX-B
MIX-B
MONITOR
SPLIT EQ
FLIP SW
CHANNEL
SOURCE
OL
-20
PAN
SOLO
MUTE
24
dB
10
5
U
5
10
20
30
40
50
60
OO
1-2
3-4
5-6
7- 8
L/R MIX
THE FLIP SWITCH: MIC/LINE OR TAPE
IN
indicates, the MIC/LINE input (after Mic/Line preamp) is fed to the channel fader when the FLIP switch is in the up position. This is the normal mode for tracking and overdubbing. In the down position, the TAPE return (the output signal from the corresponding track of your re­corder) is fed to the channel fader. This is the normal position for mixdown.
To recap - when the FLIP is up, the Mic/Line feeds channel and Tape return feeds MIX-B. When the FLIP is down, the channel is Tape and MIX-B is MIC/LINE. FLIP... FLOP. OK?
PAN
For live PA, leave the FLIP switch up.
The switch labeled FLIP (10) selects the input that is actually fed into the channel fader (and the MIX-B con­trol; see below). As the label

MIX-B / MONITOR

Each channel strip has a dual signal path (Enter Mix­B!) with extremely flexible switching. This allows either
the mic/line inputs or tape return inputs to be routed through either the channel fader path or Mix-B with separate EQ and monitoring. Both of the signal paths can be combined into the main mix by depressing the Mix-B to L/R Switch in the master section. OK, now we jump down the channel again to the MIX-B/Monitor section. This handy and very simple feature is also called “in-line monitoring” and is found on quite a few consoles. So we’re not claiming that it’s anything new… we just added some extra features for more flexibility. MIX-B/Monitor routing options can get a bit complicated, so pay attention. Also, we did add something that other in-line monitoring sys­tems don’t have. So double pay attention.
The MIX-B buses are a stereo pair, indepen­dent of the 8-plus-2 recording buses we’ve talked about so far. There are three sources available to MIX-B: MIC/LINE or TAPE (via the FLIP switch) and the pre-fader output of the channel strip (via the SOURCE switch). A fourth source, post-fader output of the channel
strip (via the source switch), can be achieved by modifying the channels. Instructions for this modification can be found on our website at www.mackie.com (click on Support). Or you can call Tech Support at 1-800-258-6883 for assistance.
1. When the Mix-B SOURCE switch (11) is
up, MIX-B receives its input from the FLIP switch. Remember, the FLIP switch alter­nates MIC/LINE or TAPE to the channel strip and to MIX-B. With TAPE as an input (SOURCE up to select the FLIP switch, and FLIP in the up position), the MIX-B section functions as a tape monitor submix, allowing you to listen to the inputs and outputs of your multi-track recorder as you record. This is the most common use of the MIX-B section, during tracking and overdubbing.
2. With MIC/LINE as an input (SOURCE up to select the FLIP switch, and FLIP in the down position), MIX-B becomes an additional input to add tracks or effects during a mixdown. Simply plug the additional signal into the MIC or LINE connector. Although they are nor­mally separate, a button (MIX-B TO L/R MIX) in the Output Panel (see below) can add the output of the MIX-B buses to the L/R Mix buses. Voilà! Double your mix inputs!
3. With CHANNEL as an input (SOURCE down in CHANNEL position), MIX-B taps its signal from the channel strip, just before the channel fader. MIX-B is separately pan-able, EQ-able and can be used as an alternative stereo mix, a stereo auxiliary send, a “mix-minus” bus, a quadraphonic or surround feed, you name it. Mix B can also have its own aux send (see Aux sends 3-6).
Check out Section 3: General Info and the Block Diagram for more information on MIX-B routing.
MIX-B PAN
The PAN control (12) routes the channel’s MIX-B signal across the left and right MIX-B buses.
MIX-B LEVEL
The LEVEL control (13) sets the level of the channel sent to the MIX-B buses. The gain structure of this circuit (like the AUX send 1–6 circuits, below) includes extra amplifica­tion. What this means to you is that you will always have plenty of gonadotropic gain avail­able for the MIX-B buses. Full left on the LEVEL control is off; the midpoint of travel is “U”, or unity gain; full right is 15dB of boost.
6
SHIFT
MIX-B SPLIT
The SPLIT switch (14) in the MIX-B section splits the EQ sec­tion of the channel when depressed. In the up position, all four sections of EQ remain, if en­gaged, in the primary channel signal path feeding the channel fader and the 8-plus-2 buses. In this mode there is no equalization in the MIX-B path.
When the SPLIT switch is de­pressed, the HI and LO shelving sections of the EQ are removed from the channel signal and in­serted into the MIX-B signal path. The HI-MID and LO-MID parametric sections of the EQ re­main, if engaged, in the channel signal path.
The SPLIT function allows you to EQ the channel’s signal and its MIX­B signal separately.
Note: When the EQ is split, the main EQ IN/OUT switch only switches the channel signal’s para­metric sections. It does not affect the shelving sections split to MIX-B.

EQ SECTION

Each 8•Bus channel strip equal­izer section has four bands (HI MID, LO MID, LO, and HI) plus a low-cut filter. The equalizer can be split be­tween main channel signal and MIX-B signal.
HI MID EQ
The HI MID EQ section (15) is a true 3-control parametric design, offering: A) bandwidth variable from 3 octaves to 1/12 octave (16);
B) ± 15dB of equalization (17) and; C) variable frequency center from
500Hz to 18kHz (18).
We spent a lot of time on this part of the 8•Bus Series’ EQ. One of the things we’ve always noticed about lower-priced consoles was how “drastic” their Hi Mid EQ sounded. Even a little boost could induce honkiness and nasality. Frankly, Hi Mid EQ on many boards is not that useful in studio applications for just this reason.
+15
+10
+5
0
–5
–10
–15
Hz
20
+15
+10
+5
0
–5
–10
–15
20Hz100
+15
+10
+5
0
–5
–10
–15
20
+15
+10
+5
0
–5
–10
–15
20
+15
+10
+5
0
–5
–10
–15
20
+15
+10
+5
0
–5
–10
–15
20
Hz
100
Freq. center: 1k;
Bandwidth: 1/12-octave;
±15dB boost/cut
Hz
Freq. center: 1k;
Bandwidth: 1-octave;
±15dB boost/cut
Hz
100
Hz
Freq. center: 1k;
Bandwidth: 3-octave;
±15dB boost/cut
Hz
100
Hz
Freq.: 500Hz-18kHz sweep;
Bandwidth: 1/12-octave;
±15dB boost/cut
Hz
100
Hz
Freq.: 500Hz-18kHz sweep;
Bandwidth: 1-octave;
±15dB boost/cut
Hz
100
Hz
Freq.: 500Hz-18kHz sweep;
Bandwidth: 3-octave;
±15dB boost/cut
When you put these consoles on the test bench, you see that the bandwidth of their EQ is simply too narrow — often around one octave. This is OK for extreme adjustments in live situations,
Hz
1k
but that’s about it. It’s just not
Hz
10kHz20k
wide enough to gently alter the multiple octaves that voices and instruments span.
This is just the opposite of “classic” big-studio consoles.
Their EQ (including Hi Mid)
1k
Hz
can be adjusted to be extremely
10kHz20k
Hz
broad — three or more octaves wide in many cases. When you apply this wideband EQ, it sounds far more “sweet” and “natural.” Changes sound so gradual and smooth that you can
24
CHANNEL
MIX-B
U
–15 +15
3k
1k 5k
500 18k
2
1
3
12
U
–15 +15
250
220 350
45 3k
U
–15 +15
U
–15 +15
EQ
75 Hz
18dB/oct
PRE
SOURCE
HI
MID
FREQ
NORMAL
BAND WIDTH
OCTAVES
LO
MID
FREQ
HI
12k
LO
80
EQ IN
LOW CUT
add considerably more EQ than would ever be possible with nar­rower-band consoles, yet without
1k
Hz
compromising the overall sound.
10kHz20k
Hz
On the other hand, ultra-nar­row-band EQ also has its place, both as a corrective tool and for special effects. So why not give you even tighter control than would be possible with a 1/3­octave graphic equalizer? Thus was born the 8•Bus’ 1/12-octave to 3-octave width range.
1k
Hz
10kHz20k
At this point, as we played
Hz
around with the Bandwidth and Boost/Cut controls using actual music, we realized that to limit this circuit to just Hi Mid (typi­cally above 2.5kHz) would actually limit its usefulness. The flexibility that true parametric control provides is nice to have in the octaves below the Hi Mid re-
1k
Hz
10kHz20k
Hz
gion as well. So we came up with what is probably the first console Hi Mid control that can be swept all the way down to 500Hz. If Hi Mid doesn’t do it for you as a name, think of these three controls as the Roving­Parametric-Problem-Solver-O-Matic. O-Rama.
1k
Hz
10kHz20k
Hz
7
NORMAL
2
1
3
12
U
–15 +15
250
220 350
45 3k
U
–15 +15
U
–15 +15
EQ
75 Hz
18dB/oct
LR
U
OO
+15
HI/LO EQ TO MIX-B
MIX-B
MONITOR
FLIP SW
CHANNEL
BAND
WIDTH
OCTAVES
LO
MID
FREQ
HI
12k
LO
80
EQ IN
LOW CUT
PAN
LEVEL
SPLIT EQ
SOURCE
Now you know some of the de­sign philosophy behind our Hi Mid EQ. It’s time to start experi­menting with it yourself. Don’t forget to try the control at its bandwidth extremes — espe­cially at the 3-octave end. You’ll be pleasantly surprised.
Conversely, if you hate tech­nology and yearn for the sound of that old board you sold to buy an 8•Bus, you can achieve a semi­parametric sound by leaving the BANDWIDTH knob in the middle at 2 octaves.
LO MID EQ
The LO MID EQ control (19) is a semi-parametric (sweepable) equalizer with a broad, fixed bandwidth of 2 octaves, ±15dB of equalization and frequency variable from 45Hz to 3kHz.
Boosting in this range can put warmth and body into vocals and instruments. Cutting can really help the clarity of some sounds by reducing boxy and boomy tones.
HI EQ
The HI EQ control (20) is a fixed 12kHz shelving equalizer with ±15dB of equalization avail­able. A great treble control, it is switched with LO EQ into the MIX-B circuit if the SPLIT but­ton is depressed.
Shelving equalizers work on a very broad range of frequencies, and consequently, are very musi­cal. In a 12kHz shelf like this section, that means that all the upper harmonics of a sound are raised evenly, basically keeping their original musical relation­ship to each other. A high-frequency shelving EQ is great for putting shimmer into acoustic guitar and piano tracks and sizzle into vocals.
LO EQ
The LO EQ control (20) is a fixed 80Hz shelving equalizer with ±15dB of equalization avail-
8
+15
+10
+5
0
5
10
15
20
Hz
100
Hz
Lo Mid EQ
2 octave ±15dB boost/cut
+15
+10
+5
0
5
10
15
20
Hz
100
Hz
Lo Mid EQ sweeps
from 45Hz to 3kHz
+15
+10
+5
0
5
10
15
20
Hz
100
Hz
Hi EQ ±15dB boost/cut
above 12kHz
+15
+10
+5
0
5
10
15
20
Hz
100
Hz
Lo EQ ±15dB boost/cut
below 80Hz
+15
+10
+5
0
5
10
15
20
Hz
100
Hz
Lo cut (high pass filter)
18dB/oct. at 75hz
+15
+10
+5
0
5
10
15
20
Hz
100
Hz
Interaction of Lo Cut
with Lo EQ boost.
Verrry eenteresteeng, no?
able. It’s a fine bass control, and is switched with HI EQ into the MIX-B circuit if the SPLIT button is depressed.
A low-frequency shelving equalizer will add or remove bass in a smooth, musical fashion.
1k
Hz
10kHz20k
Hz
Good for working on bass drum and bass guitar, fattening up (or thinning out) a piano or contour­ing an entire mix.
EQ IN/OUT
The IN switch (22) bypasses the EQ (though not the LO CUT filter) when up. Depress it to enable equal-
1k
Hz
10kHz20k
ization.
Hz
LO CUT
The LO CUT switch (23) inserts an 18dB/octave low-cut (high-pass) filter with a –3dB point of 75Hz into the main channel signal. The LO CUT filter is unaffected by the EQ IN switch.
A low-cut filter is handy to get rid
1k
Hz
1k
Hz
1k
Hz
1k
Hz
of room rumble, traffic noise, wind
10kHz20k
Hz
noise, popping, and other unwanted very-low-frequency sounds. It can also be combined with LO EQ boosts to produce some interesting bass curves as shown in the last EQ graph on this page. It is highly rec-
ommended that this switch be engaged for vocal microphones, es­pecially in a live P. A. situation.
10kHz20k
Hz

AUX SENDS

Auxiliary sends are generally used to provide mixes for head­phone cueing and for effects sends, and in Sound Reinforcement use, can be assigned monitor submix duties. The 8•Bus Series consoles provide 6 mono auxiliary sends with several routing options.
10kHz20k
Hz
Note: All of the 8•Bus Series AUX sends have a very wide range of gain (just like the MIX-B Level control discussed earlier). The first half of the control’s rotation reaches from the off position to unity gain (U). This half of the
control’s range corresponds to the full range of a conventional mixer. The second half of the control’s
10kHz20k
Hz
rotation provides you with even more gain, from unity to +15dB.
L
T
I
V
I
T
For example, when you want a super “wet”
sound(mostly reverb), the extra gain allows you to bring the channel fader part way down (and the AUX send way up) so the sound is mostly reverb with just a touch of “dry” signal.
Don’t worry about having mono effects sends: almost all effects units, mono or stereo, have mono inputs. Even if there are two jacks labeled Left and Right, they are almost always combined into mono internally. In the rare cases when an effect actually has true stereo inputs, it is often more convenient to ignore that and treat it as mono anyway. If you really need to send in stereo, just use two AUX sends from the console. Route AUX 1, for example, to the left input and AUX 2 to the right. Then ad­just the stereo perspective by favoring one or the other send. For instance, if you have a stereo synth into channels 23 and 24, use AUX 1 on channel 23 and AUX 2 on channel 24.
Note: In PRE mode, all AUX SENDS are connected pre-fader but post-EQ. This is usu­ally the most useful setup, but if you prefer, all AUX SENDS can be modified to be pre-EQ, pre-fader. Instructions for this modification can be found on our website at www.mackie.com (click on Support). Or you can call Tech Support at 1-800-258-6883 for assistance.
AUX 1 & 2
Auxiliary sends 1 & 2 (24) have two inde­pendent level controls and share a common PRE/POST switch.
When in the normal post mode, sends 1 & 2 get their signal after the channel fader and the MUTE switch. This is the usual configuration for an effects send, since the level of the effect should follow the volume adjustments made by the channel fader.
AUX 3, 4, 5, 6
Auxiliary sends 3, 4, 5, and 6 (26) are very simi­lar to sends 1 & 2. The differences are in the SHIFT and SOURCE switches. Read on.
SHIFT
The SHIFT button (27) con­nects the two level controls, as a pair, to either sends 3 & 4 (in the up position) or to sends 5 & 6 (in the down
position). Twice the sends in half the space.
SOURCE
The SOURCE switch (28) breaks AUX Sends 3-6 away from the main channel strip world that sends 1 & 2 are stuck in, and allows the sends to tap from another source: the MIX-B signal for that channel. This is a very handy thing, whatever you happen to be using MIX-B for.
If MIX-B is an additional input for your mix­down, then (when the SOURCE switch is depressed) AUX Sends 3-6 are effects sends connected to that source. If MIX-B is your stu­dio monitor submix from the recorder, then AUX Sends 3-6 are a great source of head­phone cue signals. They will follow playback, record and punch-ins automatically as your recorder does its stuff.
PRE (3-6)
The PRE switch (29) for Sends 3-4-5-6 func­tions just like the PRE switch sends 1 & 2, when the AUX SOURCE switch is in the CHANNEL (up) position.
Additionally, the PREswitch will tap the pre­level (and pre-mute) signal of whichever SOURCE you have selected-channel or MIX B.
Y
+4
-40
dBV
MIC/LINE
10
dB
50
dB
TAPE
TRIM
GAIN
FLIP
U
1
OO
+15
U
2
OO
+15
AUX
PRE
U
3
5
OO
+15
U
4
6
OO
+15
AUX
SHIFT
24
PRE
CHANNEL
MIX-B
SOURCE
PRE (1&2)
With the PRE switch (25) depressed, AUX SENDS 1 & 2 receive their input from a point before the channel fader and MUTE switch, and are not affected by changes in these controls. This is the normal switch setting for creating stage monitor and/or studio cue headphone sends.
9
LAYOUT
AND
FUNCTION

OUTPUT SECTION

The output section is the large area to the right of the input channel strips. It contains the master fad­ers and metering, as well as the send and return masters, cue, monitoring and communication controls.

8BUS FADERS

At the bottom of the output panel are the mas­ter faders for each of the eight buses (1). Each fader controls the level of its mix, with precise dB markings and a unity gain point marked on the panel. The fader is located in the circuit after the submaster insert jack but before the final line amplifier.
There is an Assign section associated with each bus fader, detailed below. Note that no matter what the selection of the assignment switches, the output of each bus is always present at its Sub­master/Tape Output jack and is monitored on its own bus meter.

L MIX and R MIX

The odd-numbered buses have an L MIX but­ton above their faders (2); the even buses have an R-MIX button (3). Pressing this button assigns the bus to the L or R Mix bus, respectively. This switch, along with the MONO L & R switch dis-
SOLO SOLO SOLO SOLO SOLO SOLO SOLO SOLO
ASSIGN
MONO
dB
10
5
5
10
20
30
MONO
L+R
L
1
L+R
MIX
dB
10
5
5
10
20
30
MONO
RLRLRLR
2345678
dB
10
5
5
10
20
30
ASSIGN ASSIGN ASSIGN ASSIGN ASSIGNASSIGNASSIGN
MONO
L+R
MIX MIX MIX
dB
10
5
5
10
20
30
MONO
L+R
dB
10
5
5
10
20
30
MONO
L+R
L+R
dB
10
5
5
10
20
30
MONO
L+R
dB
10
5
5
10
20
30
cussed below, allows you to assign submix buses within your L/R mix.

MONO L & R

The MONO L & R switch (4) functions ONLY when you have first depressed the L MIX or R MIX. If you’ve pushed L MIX or R MIX, pushing MONO L & R will assign the bus to both channels of the Left and Right Mix buses, instead of just the Left, or just the Right. This is also for submixing, but allows you to put your submix in the center rather than on either side.
(Those of you with patch cords have probably realized you can patch the bus into a channel and do even more fun things, but we’ll talk about that later.)

SOLO

The SOLO button (5) solos the output of the bus fader. When any SOLO button is pressed, the SOLO LED lights.
This is a pretty trick SOLO, too. If you have not pushed the MONO L & R switch, the SOLO sends the odd-numbered tracks to the left speaker and the even-numbered tracks to the right, whether or not the associated L MIX or R MIX is engaged. But if you
have pressed MONO L & R, the SOLO circuit is smart enough to send the bus to both speakers and put the stereo image in the middle. You will be the envy of your neighborhood.

L/R MIX FADER

The L/R MIX fader (6) is a stereo fader located at the far right of the console. The fader controls the level of the L/R MIX bus, with pre­cise dB markings and a unity gain point marked on the panel. This fader, like the bus faders, is located in the circuit after the L/R in­sert jack but before the final line amplifier.
MONO
L+R
dB
10
5
UUUUUUUU U
5
10
20
30
TALKBACK
MIC
LEFT/RIGHT
MIX
dB
10
5
5
10
20
30
dB
10
5
U
5
10
20
30
40
50
80 80 80 80 80 80 80 80 80 80
40
50
OO
40
50
OO
OO
40
50
40
50
OO
40
50
OO
40
50
OO
40
50
OO
OO
40
50
OO
10
40
50
OO

METERING

Bus Meters 1-8
Directly above each bus fader is a peak-reading meter displaying the bus output level. Zero (0) on the meter references a level of +4dBu (1.23 volts RMS) at the output jack.
Note: If the –10dBV switches are engaged at the Subgroup output jacks, then zero (0) on the meter references a level of –10dBV at those outputs.
Note: When any SOLO switch is engaged, the SUBMASTER meters will be extinguished in or­der to divert your attention to the SOLO/MAIN meters (discussed below).
MAIN OR SOLO LEVEL Meters
The MAIN OR SOLO LEVEL meters display the L/R Main Mix levels and are similar to the bus meters, with these exceptions:
• If a SOLO button is depressed, the meters
display the output of the soloed signals; if not, the meters show the level of the signal selected by the MONITOR SOURCE switches. In other words, you are always meter­ing what you’re listening to.
IMPORTANT:
When the console is in SOLO mode, zero (0) on the
SOLO/MAIN meters references the actual internal operating level, or 0dBu (.775v). If you have just one signal in the main L/R path and you SOLO it, the meter level will jump up 4dB. Don’t be alarmed. If you’re mixing on the L/R buses, that’s what you’ll meter. If you’re checking a tape playback, that’s what you’ll meter. When the meters are following the monitors (not in SOLO), zero (0) on the meter references a level of +4dBu (1.23 volts RMS) at the main L/R outputs, just like the submaster meters. Note: The solo levels displayed on the meters are PRE-solo level, thus giving you an accurate showing of the total level of the soloed signals.This is also the way to set initial console levels. See the discussion of the SOLO function, earlier in this section.
• Additional red LEDs per side at the top of the meter show output clipping at +28dBu balanced,
1
2
3
4
U
OO
+15
LEVEL
ASSIGN TO
L/R MIX
MASTER
MIX B / MONITOR
+22dBu unbalanced. (You don’t want these to ever go on. If they do, try pulling down the L/R master fader a little.)

AUX SENDS

The six auxiliary send outputs each have a master level control. Like any level control, turn­ing the knob turns the volume up or down. However, the gain of the AUX Sends has been optimized at the unity (center detent) setting and should not need adjustment.
The output of each bus is available at its AUX Send Out jack in the jack panel above. Addition­ally, AUX Sends 3 & 4 and AUX Sends 5 & 6 are fed as stereo pairs to the two PHONES SOURCE switching matrices, for headphone cueing purposes.
U
SOLO
OO
+15
U
SOLO
OO
+15
LEVEL LEVEL
U
SOLO
OO
+15
U
SOLO
OO
+15
SOLO SOLO
AUX SENDS
OOOOOO
PHONES
LEVEL
SOLO
PHONES 1
+
10
7
4
2
0
2
4
7
10
20
30
40
LR
U
5
SOLO
OO
+15
U
6
SOLO
OO
+15
LEVELLEVEL
MONITOR
MIX-B
AUX SEND
3/4
AUX SEND
5/6
EXTERNAL
PHONES 2
+
+
10
10
7
7
4
4
2
2
0
0
2
2
4
4
7
7
10
10
20
20
30
30
40
40
LR
PHONES
LEVEL
SOLO
12345678
U
1
OO
+20
U
2
OO
+20
U
3
OO
+20
U
4
OO
+20
LEVEL
MONITOR
MIX-B
AUX SEND
CNTRL RM
3/4
AUX SEND
5/6
EXTERNAL
SOURCESOURCE
MONITOR
+
+
10
10
7
7
4
4
2
2
0
0
2
2
4
4
7
7
10
10
20
20
30
30
40
40
LR
LR
LR
BALANC E
SOLO
SOLO
OO
STUDIO
O
OO
1-2
SOLO
1-2
SOLO
PHONES2L/R MIX
PHONES
1
ASSIGN
PHONES1PHONES2L/R MIX
ASSIGN
STEREO AUX RETURNS
L/R MIX
MIX-B
2-TK
EXTERNAL
MONO
SOURCE
+
+
10
10
7
7
4
4
2
2
0
0
2
2
4
4
7
7
10
10
20
20
30
30
40
40
LR
3-4 5-6 7-8
3-4
U
U
OO
+15
OO
+15
LEVEL LEVELMIX-B
RUDE
SOLO LITE
OPERATING
LEVEL
INDICATOR
AND
SOLO
169 101112131415
2417 18 19 20 21 22 2 3
ASSIGN
ASSIGN
5
6
5-6
OO
OO
LEVEL
L/R MIX
7-8
L/R MIX
U
+20
U
+20
AUX SEND 1
AUX SEND 2
TAPE SUB MASTERS
PHONES
STUDIO
TALKBACK
+
22
10
7
4
2
0
2
4
7
10
20
30
40
LR
MAIN
OR SOLO LEVEL
LAYOUT
AND
FUNCTION
SOLO
SOLO
&
11
LAYOUT
AND
FUNCTION

AUX SOLO

The SOLO button next to each level control (7) solos that send and allows you to check the send level in the main meters. There is a solo LED (8) in the Send section, to help you locate what the heck you soloed.
Note: The six AUX Sends are each mono sig­nals, and they are soloed in mono. If you are using a stereo pair of sends for headphone cue, use the SOLO button in the PHONES 1 or 2 ar­eas to check the sends in stereo.

STEREO AUX RETURNS

The AUX Returns (9) provide 12 additional inputs to the console for return from effects and re­verb devices. The returns have switch matrices to allow easy assignment to headphones or mix buses. When any return is soloed, the solo LED in the lower left-hand corner of the Return area lights.
For extra flexibility, the AUX Returns have been designed with an extremely wide range of available gain, offering as much as 15dB boost over unity.
The return jacks are wired to provide both stereo and mono operation. See AUX Returns under JACK PANEL later in this section for details.
Returns 1 & 2
AUX Returns 1 & 2 (10) each have a stereo SOLO switch, a stereo LEVEL control, a BALANCE control and a bank of ASSIGN switches.
ASSIGN (1 & 2)
AUX Returns 1 & 2 are assigned in stereo pairs (Return 1, L & R; Return 2, L & R) to the L / R MIX buses or to odd-even pairs of the 8 submix buses (11). If you would like an effects return to accom­pany its dry signal on the multitrack (wet tracks), these are the returns to use.
Returns 3 & 4
AUX Returns 3 & 4 (12) each have a stereo SOLO switch, a stereo LEVEL control and a smaller bank of ASSIGN switches.
ASSIGN (3 & 4)
Returns 3 & 4 are assigned in stereo pairs (Return 3, L & R; Return 4, L & R) to the L / R MIX buses or to the PHONES 1 and PHONES 2 buses via respec­tive banks of buttons for each return(13). If you want additional effects returns preset in the head­phone mixes, these are the returns to use.
POWER
U
1
SOLO
OO
+15
U
2
SOLO
OO
+15
LEVEL LEVEL
U
3
SOLO
OO
+15
U
4
SOLO
OO
+15
SOLO SOLO
U
OO
+15
LEVEL
ASSIGN TO
L/R MIX
MASTER
MIX B / MONITOR
AUX SENDS
OOOOOO
PHONES
LEVEL
SOLO
PHONES 1
5
6
U
OO
U
OO
LEVELLEVEL
MONITOR
MIX-B
AUX SEND
3/4
AUX SEND
5/6
EXTERNAL
SOLO
+15
SOLO
+15
PHONES
LEVEL
PHONES 2
SOLO
1
2
3
4
U
OO
U
OO
U
OO
U
OO
LEVEL
MONITOR
MIX-B
AUX SEND
3/4
AUX SEND
5/6
EXTERNAL
SOURCESOURCE
Returns 5 & 6
AUX Returns 5 & 6 (14) each have a stereo SOLO switch and a stereo LEVEL control. Re­turns 5 & 6 are permanently
LR
LR
SOLO
SOLO
OO
STUDIO
O
OO
SOLO
SOLO
PHONES2L/R MIX
PHONES
1
PHONES1PHONES2L/R MIX
STEREO AUX RETURNS
L/R MIX
MIX-B
2-TK
EXTERNAL
MONO
SOURCE
+20
+20
BAL ANCE
+20
+20
CNTRL RM
MONITOR
ASSIGN
ASSIGN
1-2
OO
OO
LEVEL LEVELMIX-B
RUDE
SOLO LITE
OPERATING
LEVEL
INDICATOR
AND
SOLO
3-4 5-6 7-8
ASSIGN
5-6
3-4
ASSIGN
5
6
LEVEL
U
U
+15
+15
U
OO
+20
U
OO
+20
TALKBACK
L/R MIX
7-8
L/R MIX
SOLO
SOLO
AUX SEND 1
AUX SEND 2
TAPE SUB MASTERS
PHONES
&
STUDIO
+
1-2
assigned to the L/R MIX bus. All returns are useful in a mix­down situation, as they are all assignable to the L /R mix.
MIX-B / MONITOR
The MIX-B / MONITOR sec­tion (15) is quite straightfor­ward. It offers a stereo level control for the MIX-B output, and an ASSIGN: MIX-B TO L /R MIX switch, which can add the MIX-B bus signal to the main L /R Mix. This essentially doubles the inputs available for mixdown. Avoid this pitfall: If you are monitoring the L/ R mix in the control room and have the MIX-B to the L / R mix assigned, do not also select MIX-B in the monitor source switch matrix. If you do, MIX-B will sound twice as loud in the control room as it is in the L/ R mix!
12
PHONES
The PHONES 1 (16) and PHONES 2 (17) sec-
tions are identical. Each contains a stereo level control for the headphones outputs, a stereo SOLO switch, and five
pushbuttons to select from the following signal sources: MONITOR, MIX-B, AUX SENDS 3 & 4, AUX SENDS 5 & 6, and EXTERNAL.
You can select any combination of sources.
• The MIX-B, AUX SENDS 3 & 4 and AUX SENDS
5 & 6 switches are connected directly from the outputs of their respective circuits.
• MONITOR takes the signal from after the
MONITOR selection switches described below, and therefore carries the same signal that is applied to the control room monitors. (The PHONES section is not affected by the CNTL RM level control or the MONO switch in the MONI­TOR section, though.)
• The EXTERNAL switch is connected directly
from the L and R EXTERNAL INPUTS in the jack panel above. External is an independent cue channel for click tracks, etc. Its signal DOES NOT appear at any of the channels or buses.
Note: If MONITOR is selected as a PHONES source and the solo button in the PHONES section is depressed, nothing will happen except that the Solo LEDs will light up. That’s because Solo is disabled under these conditions to prevent a feedback loop and its associated anguish.
Note: If nothing is selected, signal may still feed the PHONES from AUX Return 3 & 4, via that section’s ASSIGN TO PHONES switches.
MONITOR
The control room monitors and the studio playback monitors are both controlled from the MONITOR section of the console (18). There is a stereo level control for the control room and another for the studio. Note: Fully clockwise equals unity gain.
A bank of switches selects the stereo sources available to the speakers from L/R Mix, MIX-B, Tape and External. You can select any combination of signal sources.
The L/R MIX and MIX-B switches are con­nected from the outputs of the L/R and MIX-B buses. The TAPE and EXTERNAL switches are connected from the 2-TRACK INPUTS and the EXTERNAL INPUTS, respectively, on the jack panel above.
The MONO switch sums the left and right channels together to allow you to check your mix in monaural. This affects only the control room monitor speakers, the studio monitor speakers, and the L/R meters (although the meters are not monoed in solo mode.)
SOLO
The Solo section (19) contains the master level control for the stereo Solo mix. Set at the center detent, it will match the level of the soloed signals to the same signals unsoloed. This section also has the most obnoxious solo light allowed un­der international trade and safety regulations. We hope it gets your attention. The monitor switch in the phones section must be pushed in (selected) or the solo bus will not feed the phones. (By the way, if your console has two little tiny Death’s Heads above your RUDE SOLO LITE, you are very lucky. Only one in 10,000 Mackie consoles has what we call “Grim Greg” on it, and if you send in the top panel of your console with proof of purchase, we will ship postpaid to your door the bivalve pride of the North­west, a Quilcene-smoked Geoduck filet, with our compliments!)
TALKBACK
The talkback section has four momentary pushbutton switches, which assign talkback to any combination of AUX Send 1, AUX Send 2, TAPE SUBGRPS (L/R MIX and the 8 SUBMAS­TERS) and PHONES/STUDIO. Try setting the talkback level at the center detent for starters. It can be tweaked up or down to your liking.
Note: When talkback is engaged, only the con­trol room outputs are padded by 20dB to avoid feedback, yet still allow the engineer to hear the musicians. The studio output is not padded. In situations where either the control room level is set way up, or there is a speaker pointing at the console, there may still be feedback. To prevent this, turn down the talkback level, the control room level, or change the angle of the control room speakers.
The Talkback Microphone is located just above the L/R MIX fader. This ain’t no Neumann, so don’t attempt vocals through it (we wanted it to sound gritty and generally talkback-esque). Appli­cation of chewing gum to this orifice will degrade performance further to simulate really beat-up AM radio production studios.
LAYOUT
AND
FUNCTION
13
PHANTOM
POWER
CHANNEL
24
MIC/LINE
LINE
BAL-
UNBAL
DIRECT
OUT
INSERT
TIP = OUT RING = IN
JACK PANELS (INPUT STRIP & MASTER OUTPUT)
All of the inputs, outputs and insert points are located on the jack panels on the top and the rear panels of the mixer. An external patchbay is not required, although it does make life easier.
Let’s start by listing what is NOT on the FRONT jack panel:
IN
• The console outputs to the multitrack tape
recorder (the Submaster/Tape outputs)
• The console inputs from the multitrack tape
recorder
• The balanced main L/R (XLR connector)
outputs (on the rear panel)
All other connections are made at the top of the front panel, either above the channel Input Strips or above the Output Panel.
INPUT STRIP
Each channel input strip has its inputs and outputs located directly above the strip. The connections are detailed next.
PHANTOM POWER
Microphone phantom power (+48 VDC) is ap­plied to the channel strips in groups of eight. The phantom on/off switch for channels 1-8 is located above channel 8; the switch for 9-16 above chan­nel 16, and so on. It has a “ramping” function, which means it gradually ramps from 0 to 48V when you turn it on, and ramps back down when
you turn it off. This helps pro­tect your microphones.
We suggest that before plug-
ging or unplugging mics, you turn off the PHANTOM power.
Give it about a minute to settle while you get a Diet YooHoo or call your stockbro­ker. Then connect or disconnect the microphone(s) and turn PHANTOM power back on.
CAUTION: After switching PHANTOM Power
on or off, wait 1 minute before changing any mic/ line switch settings in that eight-channel block.
Another safe alternative is to turn both TRIM and Channel Faders down for that bank of eight channels before switching.
Mic In
The channel microphone input (1) is a stan­dard 3-pin female mic connector (call me Cannon or call me XLR, just don’t call me late for dinner). Pin one is ground, pin two is signal high (+), pin three is signal low (–), as per the (finally) agreed-upon international standard.
Note: Don’t use these XLR’s for line level signals — see “Line In”.
Line In
The channel Line Input (2) is a TRS (tip­ring-sleeve) balanced 1/4" phone jack, with ground wired to the sleeve, signal high (+) to the tip and signal low (–) to the ring. Nominal input level is +4dBu, with a wide range of levels accommodated by adjustment of the TRIM con­trol. These jacks also accommodate TS (tip-sleeve) unbalanced 1/4" phone plugs. See Appendix A: Connections for more information.
Direct Out
The channel Direct Out (3) is a nominal +4dBu unbalanced TS 1/4" phone jack, con­nected to the output of the channel line amplifier post-EQ/post-fader/post-mute. The out­put signal of each channel strip is always available at the Direct Out jack. Using the Direct Out does not interrupt the normal signal flow through the channel.
Channel Insert
The channel Insert jack (4) allows you to in­sert external processing equipment (such as a compressor, gate, you name it) into the main sig­nal path of the input channel strip. The insert point is after the FLIP switch (which also means that it is after the MIC/LINE or TAPE IN pream­plifiers) but before the LO CUT filter, EQ and fader MUTE switch. The TRS jack is configured for the Tip (send), Ring (return) and Sleeve (signal ground). See Appendix A for more details on using external processing and channel inserts.
Let there be light (sockets)
Additionally, one or two BNC connectors (de­pending upon the number of input channels on the console) are provided above the input strips for gooseneck lamps. The BNCs are wired with the center post at +12 VDC. Mackie doesn’t offer lamps, but most dealers do. We recommend LittleLite lamps #12G or #12G-HI (a high-intensity version).
14

OUTPUT PANEL

The input and output jacks that cor­respond to most of the functions in the Output Panel are, logically, located in the jack panel directly above the Output Panel. The 8•Bus outputs to tape (and the inputs from tape) are located on the rear panel.
Submaster Inserts
At the top of the panel are the eight Submaster Insert jacks (1). These patch points allow you to insert a serial processing device (such as a compres­sor or an equalizer) into any of the 8•Bus submaster circuits. See Appen­dix A for more details on using external processing.
The insert point is after the summing amplifier, but before the fader. Like the Channel Insert points, the connectors are 1/4" TRS jacks, wired unbalanced with the output or send signal on the tip, the input or return signal on the ring, and the sleeve common or ground.
Note: These inserts can be used as pre-fader direct outs, using an unbalanced (TS) 1/4” plug in these two ways:
• Plugs are inserted just to the FIRST click.
There is no interruption of the signal; OR
• Plugs are inserted all the way in to the
SECOND click.This interrupts the signal and routes it ONLY to the device you’re sending to.
AUX Sends
The six AUX Sends (2) appear as six 1/4" jacks in a row, just underneath the Sub Inserts.
AUX Sends 1 and 2 are balanced TRS outputs, wired tip to high (+), ring to low (–), and sleeve to ground. AUX Sends 1 and 2 are designed so that 1/4" unbalanced TS phone plugs can also be used, with no loss of level. AUX Sends 3 through 6 are un­balanced, with the tip high (+) and ring and sleeve tied together as ground. Nominal level is +4dBu.
1
1
(MONO)
L
R
(MONO) (MONO)
L
TIP = OUT RING = IN
2
2
(MONO)
L
1234 56
R
2-TRACK
INPUT
3
3
(MONO)
L
R
AUX RETURN
R
L
4
AUX SEND
4
(MONO)
L
R
EXTERNAL
INPUT
SUBMASTER INSERT
5
5
(MONO)
L
R
R
L
(MONO)
STUDIO
OUTPUT
6
6
L
R
7
L
L
L
R
L
12
PHONES
right return inputs and end up centered in your ste­reo image. When a jack is plugged into the Right input of the return, this mono feature is disabled: the left input is fed to the left return, and the right input is fed to the right return.
Main Inserts
On the upper right of the panel are two Main In­sert jacks (4). These patch points allow you to insert a serial processing device, such as a compressor or an equalizer, into the Main L/R Mix. See Section 4 for more details on using external processing.
The Main Insert’s insert point (try saying that fast three times backward) is after the summing ampli­fier but before the master fader. Like the Submaster Insert points, the connectors are 1/4" TRS jacks, wired unbalanced with the output or send signal on the tip, the input or return signal on the ring, and the sleeve common or ground.
Control Room Output
The two Control Room Output jacks (5) carry the signal for the Control Room speakers. They are 1/4" unbalanced, wired tip high, ring and sleeve ground. Nominal level is +4dBu. This is where you connect your control room monitor amplifier inputs.
8
MAIN
INSERT
CNTRL
RM OUTPUT
MAIN MIX
MIX-B
OUTPUT
R
R
R
R
AUX Returns
The AUX Returns (3) are stereo, with a L&R in­put for each return channel. Inputs are 1/4" unbalanced jacks, nominal level (+4dBu).
One special feature: The Left input jack to each return is also labeled “MONO.” If you have only one return signal, plugging it into the “MONO/L” jack only will cause it to be connected to both the left and
15
TIP = OUT RING = IN
1
2
3
SUBMASTER INSERT
4
5
6
7
8
LAYOUT
AND
FUNCTION
1
(MONO)
L
R
(MONO) (MONO)
L
2
(MONO)
L
1234 56
R
2-TRACK
INPUT
R
3
(MONO)
R
L
L
AUX SEND
4
(MONO)
L
R
AUX RETURN
EXTERNAL
INPUT
R
Main Mix
The Main Mix jacks (6) on the top panel are 1/4" TRS unbalanced, with tip high, and ring and sleeve tied to ground. The nominal level is +4dBu. These two jacks carry the L/R Main Mix, for connection to your master 2-Track recorder’s inputs, for instance. The same Main L/R Mix is also available, fully bal­anced, at the two XLR connectors on the back panel.
MIX-B Output
The MIX-B jacks (7) are 1/4" TRS unbalanced, with tip high, ring and sleeve tied together as ground, nominal level +4dBu. These jacks make the MIX-B signal available for external patching.
5
(MONO)
R
L
L
6
(MONO)
R
STUDIO
OUTPUT
L
L
L
L
R
12
PHONES
MAIN
INSERT
CNTRL
RM OUTPUT
MAIN MIX
L
MIX-B
OUTPUT
R
R
R
R
Studio Output
The two Studio Output jacks (9) carry the signal for the Studio speakers. They are 1/4" unbalanced, wired tip high, ring and sleeve ground, nominal level +4dBu. This is where you connect the inputs to your studio monitor amplifier.
Alternatively, the Studio Output jacks can be wired to a second Control Room amplifier and set of speakers. Then, to switch between the two sets, turn the CNTRL-RM level control fully down and turn up the STUDIO level control — or vice versa. This con­cept is very handy during mixdown. It won’t work very well if you plan to use any of the talkback switches, as you would during tracking/overdubbing.
Phones
The two Phones jacks (8) are 1/4" TRS stereo, with tip connected to left, ring to right and sleeve to ground. The final output of Phones 1 and Phones 2 appear here. These jacks may be connected to exter­nal power amplifiers for headphone distribution, or you may plug your phones directly into the jacks. There is plenty of level. In fact, you should turn the PHONES level down before you plug your phones in, and then bring the level up to where you want it.
16
2-Track Input and External Input
The 2-Track Input (10) and External Input (11) are 1/4" TRS unbalanced jacks, with tip wired to high and ring and sleeve tied together to ground. These inputs offer you the ability to listen to two mono or stereo sources directly, without patching through in­put channels. Either input can be connected to any stereo source you’d like to listen to. Usually, you will have the 2-Track Input connected to the output of your 2-Track master recorder, to check the mix.
The inputs are directly wired to the “2-TK” and “EXTERNAL” source selection switches in the Phones 1 and 2 and MONITOR sections of the Output Panel. These are +4 dBu inputs.
R
21
U
19
17
15
13 11 9 7 5
OPERATING
LEVEL CH. 17-24
IN –10dBV OUT +4dBu
22
20
18

REAR PANEL CONNECTIONS

The connections to and from your multitrack re­corder are on the Rear Panel of the 8•Bus Series. There are 24 or 32 Tape Return jacks (depending on the model) and 24 Submaster/Tape Out jacks.

Tape Returns

The Tape Return jacks (1) are 1/4" TRS balanced, with tip wired to high (+), ring to low (–) and sleeve to ground. These jacks are also wired to accommo­date 1/4" TS unbalanced connections. Each jack is connected to the Tape input on the corresponding channel, and is selected by the FLIP switch on that channel.
Connect the outputs of your multitrack recorder to the Tape In jacks. Note that they are grouped in sets of eight: 1-8, 9-16 and17-24.

Tape return OPERATING LEVEL

Nominal level for the Tape Return jacks is switched to either +4dBu (switch out) or -10dBV (switch in) in groups of 8 channels. If you aren’t sure of your multitrack recorder’s operating output level, check the specifications section of the recorder’s owner’s manual.

Submaster/Tape Outputs

The Tape Out jacks (2) are 1/4" TRS balanced, with tip wired to high, ring to low and sleeve to ground. These jacks are also wired to accommodate 1/4" TS unbalanced connections. The Submaster Outputs of the console appear on these jacks in the following pattern:
OPERATING
LEVEL CH. 9-16
IN –10dBV
OUT +4dBu
16 14 12 10 68
+4 / –10 BALANCED / UNBALANCED+4 / –10 BALANCED / UNBALANCED +4 / –10 BALANCED /
TAPE RETURNS 9-16TAPE RETURNS 17-24
Console Bus 1: Submaster 1, 9 and 17 Console Bus 2: Submaster 2, 10 and 18 Console Bus 3: Submaster 3, 11 and 19 Console Bus 4: Submaster 4, 12 and 20 Console Bus 5: Submaster 5, 13 and 21 Console Bus 6: Submaster 6, 14 and 22 Console Bus 7: Submaster 7, 15 and 23 Console Bus 8: Submaster 8, 16 and 24
Connect the inputs of your multitrack recorder to
the Tape Output jacks.
Why are there 24 submaster output jacks on an 8-submaster mixer? This is called “triple-bus­sing.” When you send a signal to Submaster 1 output, for instance, it will appear at Submaster Outputs #1, #9 and #17. Now, whichever tracks on your multitrack are in RECORD mode will ac­cept the signal, while the tracks in SAFE mode won’t. That way, you can feed a 24-track deck without having to constantly re-patch. Connect the Submaster/Tape Outputs to the correspond­ing inputs on your multitrack, using only Submasters 1 through 8 for an 8-track deck, or 1-16 for a 16-track deck.
Submaster/Tape Output
OPERATING LEVEL
Nominal level for the Submaster jacks is switched to either +4dBu (switch out) or –10dBV (switch in) in groups of 4 channels (3). If you aren’t sure of your multitrack recorder’s operating input level, check the specifications section of the recorder’s owner’s manual.
TAPE RETU
LEFTRIGHT
+28dBu MAX OUT
MAIN BAL OUTPUTS
87156
16
5
IN –10dBV
OUT +4dBu
OPERATING
14
SUBMASTER / TAPE OUTPUTS
LEVEL
13
+4dBu BALANCED / –10dBV UNBALANCED
4
3
2
1
IN –10dBV
OUT +4dBu
OPERATING
LEVEL
12
11
9
10
171820 1921222324
17
+18V
–18V +48V +12V
+5V
EXPANDER
PORT
USE MACKIE 8•BUS
EXPANDER CABLE
ONLY! KEEP COVERED
LEFTRIGHT

DC POWER IN

THIS CONNECTION FOR MACKIE
8•BUS POWER SUPPLY ONLY !
MAIN BALANCED OUTPUTS
Along with the unbalanced 1/4” TS Main Mix jacks on the front panel, balanced Main XLR Outputs (4) are also provided, wired pin 2 hot, pin 3 cold, pin 1 shield. Maximum output is +28dBu.

EXPANDER PORT

The Expander Port (5) connection is pro­vided for the 24•E Expander console, which has been discontinued as of this printing.
DC POWER IN
This is where the funny plug that looks like a Supersoaker squirtgun nozzle fits (6). Your 8•Bus console should ONLY be powered by the appropriate Mackie 8•Bus Power Supply.
This concludes our guided tour of the 8•Bus console’s controls and connections. Now it’s time for hands-on use!
+28dBu MAX OUT
MAIN BAL OUTPUTS
18
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