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C6655_1P1 C6655_1P2 C6655_1P3 C6655_1P4
C6655_1P1.Sch C6655_1P2.Sch C6655_1P3.Sch C6655_1P4.Sch




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a

ALLEN&HEATH
CHK
ISSUE BY DATE
BY

Kernick Industrial Estate,
A
B
MG 24/02/06
MG 10/04/06
TITLE: GL2800M MONO INPUT
Penryn, Cornwall, 1 AAT 26-05-06 XXX PAGE:
England. TR10 9LU
Tel: +44 (0)8707 556250
Fax: +44 (0)8707 556251 FILE: C6655_1.Sch PRINTED: 10:25:00 29-Nov-2006 DRG No: 6655 ISSUE: 1 SHEET: 0 OF 4
A B C D E F G H
C3
47/25
1 R30
2 4 SW1B
3 R9 5 100R 1% 0805
SW1A SW2PCOL (SPUN) R17
6 C13 47K 0805
SW2PCOL (SPUN) 820R 0.5% 0805 TF
-VA
+48V C17
R46 C19
R8 SW3A R32 15P 0805 22K 0805
8K2 0805 22K 0.5% 0805 TF 15P 0805
INSEND 3 SW2PCOL (SPUN) -VA U1A 15P 0805
D2 R36
2 LL4148 Q1 2 10K 0.5% 0805 TF SW4A
SW2PCOL (SPUN) R39 R47
R1 1 SW2B 2SB737 1
68R 0805 4 C1 SW2PCOL (SPUN)
3 10K 0.5% 0805 TF 10K 1% 0805
R5 5
1
6 R2
NE5532 SMD C4 6 C5 2 INSEND




2
22R 1% 1206 R12 47/25 R14 R42
10


C53 6 C34 C35 7 3
2
4
6
8




47K 0805 47K 0805 R34 2 1K2 1% 0805 68R 0805
1 3 5 5




4K7 1% 0805
33P/DISK R37 1
BOX 5X2 M 90 DEG




3K3 1% 0805
10K 0.5% 0805 TF 47/25 4 U2B 47/25 R18
C15 4K7 0.5% 0805 TF 3




R25
VR1A
10
2
4
6
8




R43 47N/MYL 47N/MYL R16 NE5532 SMD 47K 0805
R10
CN1




e 1N/MYL POT11 10KZ U2A
SW4B 2K7 0805 47K 0805
C54 R15 R31 SW2PCOL (SPUN)
1
3
5
7
9




R13 NE5532 SMD




22K 0.5% 0805 TF
C2 47K 0805 4R7 0805




10K 0.5% 0805 TF
47K 0805 33P/DISK C16




R38
1 C14 15P 0805
1
3
5
7
9




R6 2
4
22R 1% 1206 3 SW2A 47/25 R33
5
DIR_OUT+




15P 0805
6 SW2PCOL (SPUN)
INSRET




D1
SW3B C18 C26 U1B
R7 LL4148
8K2 0805 100N 63V/PE 1000/6.3 6 C31
SW2PCOL (SPUN)
-VA 7
R40 5
10K 0.5% 0805 TF
Q2 NE5532 SMD R48
15P 0805
R49
C
10K 1% 0805 JS3

TO REARCONNECTOR PCB C7
10K 0.5% 0805 TF 2SB737 R35 A 10K 1% 0805
SOLDER ASSIG BOT
4K7 0.5% 0805 TF JS1 PRE EQ
R41 U4B
INSRET




6 C42 R3 DIR_OUT+
-VA SOLDER ASSIG BOT R26
47/25 4K7 1% 0805 7 PREFADE 68R 0805
R54 P1
5
d JS2 POST EQ
220/10
2K2 1% 0805 JS4 PIN-SOLDER 1.25MM
NE5532 SMD
SOLDER ASSIG BOT R4 P2




MMBFJ111
C8
B




MMBFJ111
R27 SOLDER ASSIG BOT
47/25
D 68R 0805 PIN-SOLDER 1.25MM




Q3




Q4
4K7 1% 0805

12KHz SHELF C41 220N 100V/PE R20 MUTEFET R52
R19 JS5
47K 0805 HF 47K 0805
0R0 0805
VR7A SOLDER ASSIG BOT
VR2A R53
POT11 20KB C/D
3
POT11 20KB C/D
1 R44 3 1 R45
NF RES SMD0805
E
2K7 0805 2K7 0805 -VA

6 C6
C20
LF SW5A
6dB Gain C27
2




2




5
C36
R50 50Hz SW2PCOL (SPUN)
15P 0805
1N5/MYL 1 R55
4 15P 0805 1K8 0805 C21 RED
R22 2 4K7 1% 0805
47/25 R57 CN2
3 R66
6K8 1% 0805 47K 0805 PIN-SOLDER 1.2MM
1
SW5B 15P 0805
c GRN 5K6 0805 2
SW2PCOL (SPUN) R21 2 R62 6 C9 3
47K 0805 1 27K 0805 7 PIN-SOLDER 1.2MM 2 C44 4
3 5 C10 1 POSTFADE
R56 U3A U3B BLU R64 R65
47/25 3
68K 1% 0805 NE5532 SMD NE5532 SMD
U4A 220/10 LOWER PCB FIXING
1




1




R23 3K9 0805 3K9 0805
PIN-SOLDER 1.2MM 47/25 R24 NE5532 SMD
47K 0805




MMBFJ111
100K 1% 0805




MMBFJ111
C38
C48




Q5




Q6
VR5A
POT11 200KC X2 D/G VR3A
1N5/MYL TO_PFL_SW
22N/MYL POT11 200KC X2 D/G
3


2




3


2




R59 R61 MUTEFET +VB
R58
R60
6K8 1% 0805 6K8 1% 0805
6K8 1% 0805
6K8 1% 0805 METER MOULDING +VB




8




3
MTR1
C47 C37 LED BAR 4 TOMB_WZ3 R28
22N/MYL LM 1N5/MYL HM 4K7 1% 0805 U5C U6E




V- V+




V- V+
35-1KHz 500-15KHz TL072D SMD LM339 SMD
2




2




b
R63
1 3 1 3
82K 0805
VR6A VR4A