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L12PU2.Sch
Titel
Size
File:
Date:
Drawn By:
Sheet
Revision
Model No:
11-Jun-2003
BOW
MAIN INPUT STAGE
2
1 of
ALTO L12
VER030530
A3
PCB# L12PU2.PCB
L12PU2
PU2
L12PU2-2.SCH
R10_1
4R7
TRIM2-CH2
R11_1
4R7
TRIM1-CH2
C15_1
1n
INS2-CH2
C14_1
1n
C19_1
1000u/10V
R12_1
4R7
R15_1
1K50
R3_1
2K49
L-CUT2-ON
3
2
1
U2_1A
4580M
L-CUT2-OF
R25_1
5K11
INS1-CH2
C6_1
22P
C7_1
47u/25V
5
6
7
U2_1B
4580M
R30_1
62K
R28_1
1K3
R19_1
20K
R18_1
20K
C8_1
47u/25V
C16_1
0.22u/50V
C17_1
0.22u/50V
C18_1
0.22u/50V
R29_1
6K8
2
1
3
4
X3_1
JY-5042-030G
3c
5e
1a
4d
2b
X1_1
JY-6351G-02-250
T
R
S
RN
TN
INSERT 2
3c
5e
1a
4d
2b
X2_1
JY-6351G-02-250
C11_1
330P
LINE IN GAIN=+15~-45dB
C1_1
10n
MIC GAIN=0~-60dB
R20_1
470R
R7_1
2K49
C13_1
47u/63V
C12_1
47u/63V
R14_1
5K62
R13_1
5K62
C3_1
22P
C9_1
22u/35V
R24_1
5K11
C10_1
22u/35V
R27_1
10K0
R26_1
10K0
R2_1
6K81
R1_1
6K81
LINE IN2
MIC 2
PH PWR
TR3_1
HR
TR1_1
A1316
R16_1
1K50
-VCC
+VCC
-VCC
R4_1
2K49
R17_1
20K
R9_1
2K49
C2_1
10n
R21_1
470R
TR4_1
HR
+VCC
TR2_1
A1316
-VCC
+VCC
D1_1
BAS316
R5_1
2K49
+VCC
TR5_1
HR
R6_1
2K49
-VCC
R8_1
2K49
R22_1
5K11
R23_1
5K11
C4_1
22P
C5_1
22P
5
6
7
U1_1B
4580M
3
2
1
U1_1A
4580M
R10_2
4R7
TRIM2-CH3
R11_2
4R7
TRIM1-CH3
C15_2
1n
INS2-CH3
C14_2
1n
C19_2
1000u/10V
R12_2
4R7
R15_2
1K50
R3_2
2K49
L-CUT3-ON
3
2
1
U2_2A
4580M
L-CUT3-OF
R25_2
5K11
INS1-CH3
C6_2
22P
C7_2
47u/25V
5
6
7
U2_2B
4580M
R30_2
62K
R28_2
1K3
R19_2
20K
R18_2
20K
C8_2
47u/25V
C16_2
0.22u/50V
C17_2
0.22u/50V
C18_2
0.22u/50V
R29_2
6K8
2
1
3
4
X3_2
JY-5042-030G
3c
5e
1a
4d
2b
X1_2
JY-6351G-02-250
T
R
S
RN
TN
INSERT 3
3c
5e
1a
4d
2b
X2_2
JY-6351G-02-250
C11_2
330P
LINE IN GAIN=+15~-45dB
C1_2
10n
MIC GAIN=0~-60dB
R20_2
470R
R7_2
2K49
C13_2
47u/63V
C12_2
47u/63V
R14_2
5K62
R13_2
5K62
C3_2
22P
C9_2
22u/35V
R24_2
5K11
C10_2
22u/35V
R27_2
10K0
R26_2
10K0
R2_2
6K81
R1_2
6K81
LINE IN3
MIC 3
PH PWR
TR3_2
HR
TR1_2
A1316
R16_2
1K50
-VCC
+VCC
-VCC
R4_2
2K49
R17_2
20K
R9_2
2K49
C2_2
10n
R21_2
470R
TR4_2
HR
+VCC
TR2_2
A1316
-VCC
+VCC
D1_2
BAS316
R5_2
2K49
+VCC
TR5_2
HR
R6_2
2K49
-VCC
R8_2
2K49
R22_2
5K11
R23_2
5K11
C4_2
22P
C5_2
22P
5
6
7
U1_2B
4580M
3
2
1
U1_2A
4580M
R10_3
4R7
TRIM2-CH4
R11_3
4R7
TRIM1-CH4
C15_3
1n
INS2-CH4
C14_3
1n
C19_3
1000u/10V
R12_3
4R7
R15_3
1K50
R3_3
2K49
L-CUT4-ON
3
2
1
U2_3A
4580M
L-CUT4-OF
R25_3
5K11
INS1-CH4
C6_3
22P
C7_3
47u/25V
5
6
7
U2_3B
4580M
R30_3
62K
R28_3
1K3
R19_3
20K
R18_3
20K
C8_3
47u/25V
C16_3
0.22u/50V
C17_3
0.22u/50V
C18_3
0.22u/50V
R29_3
6K8
2
1
3
4
X3_3
JY-5042-030G
3c
5e
1a
4d
2b
X1_3
JY-6351G-02-250
T
R
S
RN
TN
INSERT 4
3c
5e
1a
4d
2b
X2_3
JY-6351G-02-250
C11_3
330P
LINE IN GAIN=+15~-45dB
C1_3
10n
MIC GAIN=0~-60dB
R20_3
470R
R7_3
2K49
C13_3
47u/63V
C12_3
47u/63V
R14_3
5K62
R13_3
5K62
C3_3
22P
C9_3
22u/35V
R24_3
5K11
C10_3
22u/35V
R27_3
10K0
R26_3
10K0
R2_3
6K81
R1_3
6K81
LINE IN4
MIC 4
PH PWR
TR3_3
HR
TR1_3
A1316
R16_3
1K50
-VCC
+VCC
-VCC
R4_3
2K49
R17_3
20K
R9_3
2K49
C2_3
10n
R21_3
470R
TR4_3
HR
+VCC
TR2_3
A1316
-VCC
+VCC
D1_3
BAS316
R5_3
2K49
+VCC
TR5_3
HR
R6_3
2K49
-VCC
R8_3
2K49
R22_3
5K11
R23_3
5K11
C4_3
22P
C5_3
22P
5
6
7
U1_3B
4580M
3
2
1
U1_3A
4580M
R10
4R7
TRIM2-CH1
R11
4R7
TRIM1-CH1
C15
1n
INS2-CH1
C14
1n
C19
1000u/10V
R12
4R7
R15
1K50
R3
2K49
L-CUT1-ON
3
2
1
U2A
4580M
L-CUT1-OF
R25
5K11
INS1-CH1
C6
22P
C7
47u/25V
5
6
7
U2B
4580M
R30
62K
R28
1K3
R19
20K
R18
20K
C8
47u/25V
C16
0.22u/50V
C17
0.22u/50V
C18
0.22u/50V
R29
6K8
2
1
3
4
X3
JY-5042-030G
3c
5e
1a
4d
2b
X1
JY-6351G-02-250
T
R
S
RN
TN
INSERT 1
3c
5e
1a
4d
2b
X2
JY-6351G-02-250
C11
330P
LINE IN GAIN=+15~-45dB
C1
10n
MIC GAIN=0~-60dB
R20
470R
R7
2K49
C13
47u/63V
C12
47u/63V
R14
5K62
R13
5K62
C3
22P
C9
22u/35V
R24
5K11
C10
22u/35V
R27
10K0
R26
10K0
R2
6K81
R1
6K81
LINE IN1
MIC 1
PH PWR
TR3
HR
TR1
A1316
R16
1K50
-VCC
+VCC
-VCC
R4
2K49
R17
20K
R9
2K49
C2
10n
R21
470R
TR4
HR
+VCC
TR2
A1316
-VCC
+VCC
D1
BAS316
R5
2K49
+VCC
TR5
HR
R6
2K49
-VCC
R8
2K49
R22
5K11
R23
5K11
C4
22P
C5
22P
5
6
7
U1B
4580M
3
2
1
U1A
4580M
3c
5e
1a
4d
2b
X4
JY-6351G-02-250
T
R
S
RN
TN
LINE IN 5/6
3c
5e
1a
4d
2b
X5
JY-6351G-02-250
T
R
S
RN
TN
LEFT(MONO)
RIGHT
3
2
1
U5A
NJM4580M
R72
22K
C48
22P
C56
47u/25V
R70
10K
C47
22P
R66
18K
C58
100P
R68
18K
C61
100P
5
6
7
U5B
NJM4580M
R74
22K
C49
22P
C57
47u/25V
R71
10K
C46
22P
R67
18K
C59
100P
R69
18K
C60
100P
R73
20K
R75
20K
R45
20K
R46
20K
R47
20K
R35
4R7
TRIM2-CH5
R36
4R7
TRIM1-CH5
C41
1n
C40
1n
C53
1000u/10V
R37
4R7
R40
1K50
R49
2K49
L-CUT5-ON
3
2
1
U4A
4580M
L-CUT5-OF
R60
5K11
C45
22P
C54
47u/25V
5
6
7
U4B
4580M
R63
62K
R64
1K3
R44
20K
R43
20K
C55
47u/25V
C50
0.22u/50V
C51
0.22u/50V
C52
0.22u/50V
R65
6K8
2
1
3
4
X6
JY-5042-030G
C62
330P
C38
10n
R55
470R
R48
2K49
C37
47u/63V
C36
47u/63V
C44
22P
R59
5K11
R62
10K0
R61
10K0
R39
6K81
R38
6K81
MIC 5/6
PH PWR
TR8
HR
TR6
A1316
R41
1K50
-VCC
+VCC
-VCC
R51
2K49
R42
20K
R50
2K49
C39
10n
R56
470R
TR9
HR
+VCC
TR7
A1316
-VCC
+VCC
D2
BAS316
R52
2K49
+VCC
TR10
HR
R54
2K49
-VCC
R53
2K49
R57
5K11
R58
5K11
C42
22P
C43
22P
5
6
7
U3B
4580M
3
2
1
U3A
4580M
INS-CH5-6
INS-CH5
INS-CH6
3c
5e
1a
4d
2b
X4_1
JY-6351G-02-250
T
R
S
RN
TN
LINE IN 7/8
3c
5e
1a
4d
2b
X5_1
JY-6351G-02-250
T
R
S
RN
TN
LEFT(MONO)
RIGHT
3
2
1
U5_1A
NJM4580M
R72_1
22K
C48_1
22P
C56_1
47u/25V
R70_1
10K
C47_1
22P
R66_1
18K
C58_1
100P
R68_1
18K
C61_1
100P
5
6
7
U5_1B
NJM4580M
R74_1
22K
C49_1
22P
C57_1
47u/25V
R71_1
10K
C46_1
22P
R67_1
18K
C59_1
100P
R69_1
18K
C60_1
100P
R73_1
20K
R75_1
20K
R45_1
20K
R46_1
20K
R47_1
20K
R35_1
4R7
TRIM2-CH7
R36_1
4R7
TRIM1-CH7
C41_1
1n
C40_1
1n
C53_1
1000u/10V
R37_1
4R7
R40_1
1K50
R49_1
2K49
L-CUT7-ON
3
2
1
U4_1A
4580M
L-CUT7-OF
R60_1
5K11
C45_1
22P
C54_1
47u/25V
5
6
7
U4_1B
4580M
R63_1
62K
R64_1
1K3
R44_1
20K
R43_1
20K
C55_1
47u/25V
C50_1
0.22u/50V
C51_1
0.22u/50V
C52_1
0.22u/50V
R65_1
6K8
2
1
3
4
X6_1
JY-5042-030G
C62_1
330P
C38_1
10n
R55_1
470R
R48_1
2K49
C37_1
47u/63V
C36_1
47u/63V
C44_1
22P
R59_1
5K11
R62_1
10K0
R61_1
10K0
R39_1
6K81
R38_1
6K81
MIC 7/8
PH PWR
TR8_1
HR
TR6_1
A1316
R41_1
1K50
-VCC
+VCC
-VCC
R51_1
2K49
R42_1
20K
R50_1
2K49
C39_1
10n
R56_1
470R
TR9_1
HR
+VCC
TR7_1
A1316
-VCC
+VCC
D2_1
BAS316
R52_1
2K49
+VCC
TR10_1
HR
R54_1
2K49
-VCC
R53_1
2K49
R57_1
5K11
R58_1
5K11
C42_1
22P
C43_1
22P
5
6
7
U3_1B
4580M
3
2
1
U3_1A
4580M
INS-CH7-8
INS-CH7
INS-CH8
R104
120R
R104_1
120R
R104_2
120R
R104_3
120R
Summary of Contents for L-12
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