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ALLEN & HEATH GL4800 Service Information

ALLEN & HEATH GL4800
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Kernick Industrial Estate,
Penryn, Cornwall,
England. TR10 9LU
+44 (0)8707 556250
+44 (0)8707 556251
2.1
GL4800 MONO INPUT
AG2621 1 2
PAGE:
TITLE:
DRG No: ISSUE: SHEET: OF
ISSUE BY DATE
FILE: C2621_2.1P1.SCH 09:49:23 16-Jun-2005
ALLEN&HEATH
Tel:
Fax:
PRINTED:
ABCDEFGH
a
b
c
d
e
CHK
BY
1
2
3
4
5
6
7
8
9
10
11
12
CONN1
FLEX SKT 12 WAY 90 DEG
DIR_OUT
SEND
DIRECT OUT
INSERT
INSERT RETURN
-
+
0V
LINE IN
+
-
MIC / LINE IN
+
-
SAFE / PR
MUTE_LED
MUTE
MUTE_LED
MUTE
SAFE/PR
TO INPUT-8
CONNECTOR PCB
5
4
6
S15B
2
1
3
S15A
SW2PCOL (SPUN)
PP +48V
R43 22K
R6
6K8 1%
R4
6K8 1%
MLIN+
MLIN-
C14
47/63
C39
47/63
R1
47K
R5
47K
+
-
R3
12K 1%
R2
12K 1%
2
1
3
S1A
SW2PCOL (SPUN)
5
4
6
S1B
2
1
3
S2A
SW2PCOL (SPUN)
5
4
6
S2B
R8
100K
R7
100K
C2 47/25
C3 47/25
MIC/LINE PHASE
C4
330P/DISK
C6
330P/DISK
R9
47K
R10
47K
C5
NF
R11
2K2 1%
D5
1N4002
D6
1N4002
Q1
2SB737
Q4
2SB737
Q2
BC549
Q3
BC549
R15
47R
C37
330/10
1 6
4
RV1A
POT14 10KC X2
R12
4K7 1%
R17
4K7 1%
+VC+VC
INPUT PREAMP
R13
820R 1%
R18
820R 1%
R14
1K2 1%
R16
1K2 1%
-VC-VC
C7
22P/DISK
5
6
7
IC1B
NE5532
R19
2K2 1%
R20
2K2 1%
2 5
3
RV1B
POT14 10KC X2
R21 680R
C8
100/25
R23 2K2 1%R22 2K2 1%
C9
22P/DISK
C10
220N 100V/PE
C11
GAIN
3
2
1
IC1A
NE5532
2 5
3
RV2B
POT14 200KC X2
R24
2K2 1%
16
4
RV2A
POT14 200KC X2
R121 6K8 1%
R25 2K2 1%
LO-CUT FILTER
C12
47/25
R26 22R
R27
100K
SEND
R91
10K 1%
R94
10K 1%
R75
100K
R63
100K
C42
47/25
C41
47/25
3
2
1
IC6A
TL072
C13
22P/DISK
C15
22P/DISK
R112
10K 1%
R118 10K 1%
C1
100/25
R119
100K
RETURN-
RETURN+
RETURN-
RETURN+
3
2
1
IC3A
TL072
R45 10K 1%R39 10K 1%
R41
27K
1 3
2
RV3A
POT11 20KB C/D
R40
6K8
R42
3K9
R44
NF RES
C38
2N2/MYL
1
3
2
RV4A
POT11 200KC X2 D/G
R47
22K
R46 10K
13
2
RV5A
POT11 20KB C/D
C16
1N5/MYL
R49
6K8
1
3
2
RV6A
POT11 200KC X2 D/G
C17
1N5/MYL
R52
6K8
5
6
7
IC7B
TL072
R123 6K8
R122
6K8
R124 12K
5
6
7
IC3B
TL072
R50 10K 1%
R126
5K6
R125
6K8
2
1
3
S16A
SW2PCOL (SPUN)
5
4
6
S16B
SW2PCOL (SPUN)
R48
10K
R51 10K
13
2
RV7A
POT11 20KB C/D
R54
6K8
1
3
2
RV8A
POT11 200KC X2 D/G
R57
6K8
3
2
1
IC7A
TL072
R128 6K8
R127
6K8
R129 12K
3
2
1
IC4A
TL072
R55 10K 1%
R131
5K6
R130
6K8
2
1
3
S17A
SW2PCOL (SPUN)
5
4
6
S17B
SW2PCOL (SPUN)
R53
10K
C18
22N/MYL
C19
22N/MYL
R56 10K 1%
R58 30K 2%
1 3
2
RV9A
POT11 20KB C/D
R59
15K
R60
8K2
R61
22K
5
6
7
IC4B
TL072
R62
10K 1%
1
3
2
RV10A
POT11 200KC X2 D/G
C20
6N8/MYL
R65
100K
C21
100/25
HF MF1 MF2
FREQ
FREQ
LF
FREQ
FREQ
EQUALISER
R120
22K 1%
FREQ
QQ
2
1
3
S3A
SW2PCOL (SPUN)
5
4
6
S3B
SW2PCOL (SPUN)
LD4
LED T1 3MM GREEN
R64
15K
-VC
+VC
EQ IN
POST-EQ
PRE-EQ
PRE-EQ
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
17
17
18
18
19
19
20
20
21
21
22
22
23
23
24
24
25
25
26
26
27
27
28
28
29
29
30
30
31
31
32
32
33
33
34
34
35
35
36
36
37
37
38
38
39
39
40
40
CONN2
BOX 20X2 M 90 DEG
PP +48V
A1_MIX
A3_MIX
A5_MIX
A7_MIX
A9_MIX
MTXA
MTXC
-V
+V
PFL_DC
PFLL_MIX
L_MIX
M_MIX
G8_MIX
G6_MIX
G4_MIX
G2_MIX
A2_MIX
A4_MIX
A6_MIX
A8_MIX
A10_MIX
MTXB
MTXD
-V
+V
AFL_DC
PFLR_MIX
AFL_MIX
R_MIX
G7_MIX
G5_MIX
G3_MIX
G1_MIX
J40
10K 1%
J39
0R0
R109
1R0 PF
R115 1R0 PF
R108
1R0 PF
R110
1R0 PF
R114 1R0 PF
R111
1R0 PF
C22
47/25
C23
47/25
C35
47/25
C40
47/25
C24
47N/MYL
V-
4
V+
8
IC1C
NE5532
V-
4
V+
8
IC3C
TL072
V-
4
V+
8
IC4C
TL072
V-
4
V+
8
IC6C
TL072
V-
4
V+
8
IC7C
TL072
V-
4
V+
8
IC5C
NE5532
V-
12
V+
3
IC2E
LM339
C34
47N/MYL
+VA
+VB
+VC
-VA
-VB
-VC
AUDIO EARTH
E1
PIN-SOLDER 1.2MM
E2
SGND
+VA
+VB
+VC
-VC
-VB
-VA
40 WAY RIBBON
J1
LINK OPT
-VC
AI1 AI2
HOLE-AI
AI3
ATE1
HOLE-ATE
ATE2
AI & ATE HOLES
AI4
2.1 AAT 22-03-05 XXX
003-410 iss.2.1

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ALLEN & HEATH GL4800 Specifications

General IconGeneral
BrandALLEN & HEATH
ModelGL4800
CategoryMusic Mixer
LanguageEnglish

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