ALLEN & HEATH GL4000 Service Manual

Kernick Industrial Estate,
Penryn, Cornwall,
England. TR10 9LU
+44 (0)8707 556250
+44 (0)8707 556251
1
GL SERIES METERS
C4535 2 3
PAGE:
TITLE:
DRG No: ISSUE: SHEET: OF
ISSUE BY DATE
FILE:
C4535_1P2.Sch
13:53:33 3-Oct-2001 A3
ALLEN&HEATH
Tel:
Fax:
PRINTED:
ABCDEF GH
a
b
c
d
e
1 2
3 4
M1A
METER VU
PEAK
M1B
METER VU
R13
47K
R11
100K
D10
1N4148
D11
1N4148
C11
10/16
1 3
2
VR1
PR VA 10K
3
2
1
U1A
TL072
R12
1K0
GRP1/7
3
2
1
U2A
LM393
V_DIV_REFA
R14
1K8
+VA
R10
47K
C10
10/16
1 2
3 4
M2A
METER VU
PEAK
M2B
METER VU
R23
47K
R21
100K
D20
1N4148
D21
1N4148
C21
10/16
1 3
2
VR2
PR VA 10K
5
6
7
U1B
TL072
R22
1K0
GRP2/8
5
6
7
U2B
LM393
V_DIV_REFA
R24
1K8
+VA
R20
47K
C20
10/16
R25
47R
BLGND
1 2
3 4
M4A
METER VU
PEAK
M4B
METER VU
R43
47K
R41
100K
D40
1N4148
D41
1N4148
C41
10/16
1 3
2
VR4
PR VA 10K
5
6
7
U3B
TL072
R42
1K0
GRP4/L
5
6
7
U4B
LM393
V_DIV_REFA
R44
1K8
+VA
R40
47K
C40
10/16
1 2
3 4
M5A
METER VU
PEAK
M5B
METER VU
R53
47K
R51
100K
D50
1N4148
D51
1N4148
C51
10/16
1 3
2
VR5
PR VA 10K
3
2
1
U5A
TL072
R52
1K0
GRP5/R
3
2
1
U6A
LM393
V_DIV_REFA
R54
1K8
+VA
R50
47K
C50
10/16
R45
47R
BLGND
1 2
3 4
M7A
METER VU
1 2
3 4
M8A
METER VU
1 2
3 4
M6A
METER VU
PEAK
M6B
METER VU
R63
47K
R61
100K
D60
1N4148
D61
1N4148
C61
10/16
1 3
2
VR6
PR VA 10K
5
6
7
U5B
TL072
R62
1K0
GRP6/MON
5
6
7
U6B
LM393
V_DIV_REFA
R64
1K8
+VA
R60
47K
C60
10/16
1 2
3 4
M9A
METER VU
R65
47R
BLGND
1 2
3 4
M3A
METER VU
PEAK
M3B
METER VU
R33
47K
R31
100K
D30
1N4148
D31
1N4148
C31
10/16
1 3
2
VR3
PR VA 10K
3
2
1
U3A
TL072
R32
1K0
GRP3
3
2
1
U4A
LM393
V_DIV_REFA
R34
1K8
+VA
R30
47K
C30
10/16
JP4
LINK OPT
JP2
LINK OPT
JP3
LINK OPT
R37
47K
R36
2M2
R35 100K
PEAK
M7B
METER VU
PEAK
M8B
METER VU
PEAK
M9B
METER VU
+VA
+VA
+VA
+V
-V
METERS AND DRIVERS
A AAT 19-07-01
PAFL_DC
+VA
*
*
*
*
*
**
*
*
*
**
*
*
*
*
*
R38
2K2 1%
+VA
*
1 AAT 14-08-01
LD1
LED T1 3MM RED

ALLEN & HEATH GL4000 Specifications

General

Type	Analog Mixing Console
Groups	8
Faders	100mm
Frequency Response	20Hz - 20kHz
Channels	40
Mic/Line Inputs	40
EQ	4-band with 2 sweepable mids
Direct Outputs	Yes
Phantom Power	Yes
Metering	LED
Total Harmonic Distortion	< 0.005% at 1kHz
Noise (EIN)	-128dB
Dimensions	Varies depending on frame size. e.g., 40 channel: 1367mm (W) x 724mm (D) x 223mm (H)