SCHEMATIC
L5 PREAMP DRIVE CHANNEL
11
OUT
IN
+9V
GND
4n7
68n
25kB
RC4558P
RC4558P
RC4558P
18
k
18
k
18k
18k
1k5
1k5
100kC
100kC
GND
27k
18
k
27k
GND
GND
25kB
25
kA
50
kC
25
kA
25kB
2k
2
47k
1k
LF356N
10n
GND
RC4558P
GND
4n
7
10k
1k
5
GND
2k2
2k
2
24k
2n2
68n
22k
2k2
68n
10
0k
GND
10
n
39k
RC4558P
10k
GND
15
k
10
n
6k8
33
k
GND
1k
GND
47
0k
22
0R
10
k
20
k
220pF
GND
2N3904
2N3904
3k
3
2k
47
k
33
0R
10n
33
0n
100k
68
n
2N5457
6k
8
15k
10M
GND
82
0R
100pF
22
0R
22
0R
GND
GND
2k7
1N
40
04
1N
40
04
22k
10
0k
MPSA13
20
k
GND
22
k
GND
GND
3k
3
RC4558P
RC4558P
10k
10k
33k
3MM
2N3906
10k
GND
47
k
1N
41
48
1N
41
48
GND
47
k
RC4558P
10n
2M
2
GND
10
n
10n
-VA
VA
VA
-VA
-VA
VA
LM13700N
LM13700N
LM13700N
LM13700N
VA
10n
-VA
GND
VA
-VA
-VA
-VA
-VA
-VA
VA
VA
VA
GND
10k
8n
2
VA
-VA
VA
-VA
2u
2
2u
2
GND
10uF
4u
7
-VA
GND
10
n
10
n
GND
GND
GND
GND
GND
GND
GND
GND
VA
VA
GND
GND
10
0k
-VA
1N
47
43
A
GND
DC_GND
DC_GND
100uF
DC_GND
DC_GND
10uH
10uH
10uF
10uF
10uH
47uF
GND
22
0k
GND
22uF
C9
C10
MID
1
2
3
2
3
1
IC3A
6
5
7
IC3B
2
3
1
IC2A
R1
3
R1
2
R14
R11
R15
R16
FREQUENCY A
1
2
3
FREQUENCY B
1
2
3
R8
R1
0
R9
TREBLE
1
2
3
M
AS
TE
R
1
2
3
CO
M
P_
LE
VE
L
1
2
3
VO
LU
M
E
1
2
3
BASS
1
2
3
R3
R4
R5
IC1
5
1
2
3
6
8
7
4
C3
6
5
7
IC2B
C4
R7
R6
R18
R1
7
R19
C8
C6
R21
R20
C7
R2
2
8
4
C2
1
8
4
R23
2
3
1
IC4A
R24
R2
5
C1
2
R27
R2
8
R2
6
R3
1
R2
9
R3
0
DI
ST
_T
RI
M
1
2
3
C13
Q1
Q2
R3
4
R3
2
R3
3
R3
5
C26
C1
4
R36
C1
5
Q3
R3
7
R39
R42
R4
3
C18
R4
1
R4
0
R38
D2
D3
R54
R5
2
Q5
CO
M
P_
TR
IM
1
2
3
R4
4
R4
5
2
3
1
IC6A
6
5
7
IC6B
R47
R48
R46
LIMIT
Q4
R51
R5
0
D4
D5
R4
9
8
4
8
4
6
5
7
IC4B
C22
RP
D
C1
9
C20
IC5A
3
4
5
1
2
IC5_BUF1
V+
7
8
IC5B
14
13
12
16
15
IC5_BUF2
V+
10
9
11
6
C25
R1
C1
BRIGHT
2
3
1
C1
6
CO
M
P
2
3
1
C1
1
C17
C5
C2
4
C2
3
R5
3
Z1
DC1
+VIN
2
-VIN
1
+VOUT 6
COM 7
-VOUT 8
C27
L2
L3
C28
C29
L1
C30
R2
C2
DC/DC CONVERTER
TEST
+
-
