D26
1/2
TL072
U3
2
3
1
1/2
TL072
U1
2
3
1
1/2
33078
U2
2
3
1
2/2
33078
U2
6
5
7
1u
16V
C19
S
R
T
MONO
NO_GOLD
JB2
1
2
3
4
5
6
RCA
REV_RTN
J10
1
2
S
R
T
MONO
NO_GOLD
JP3
1
2
3
4
5
6
100N
C41
1/4
MC4741
U8
2
3
1
2/4
MC4741
U8
6
5
7
4/4
MC4741
U8
13
12
14
3/4
MC4741
U8
9
10
8
2/2
TL072
U10
6
5
7
1/2
TL072
U7
2
3
1
10K
R101
100U
16V
C7
100N
C40
180N
C15
2U2
16V
C18
NUTRIX
MIC_IN
JP4
1
3
2
#7415
3.75"
4R
4/4
TL074
U6
13
12
14
8K2
R27
3/4
TL074
U6
9
10
8
CW
D
B
100K
NOTCH
P6
8K2
R26
10K
R100
4n7
250V
180K
R18A
10K
R2
0.5W
330R
R39
AS_OF
KNOB
PART#
FUNCTION
REF
10
9
8
7
6
5
4
3
2
1
#
MODEL(S):-
D
D
D
D
.
.
.
.
.
JAN/2000
K
K
K
K
.
.
.
.
.
#8641
N
N
N
N
#4419
#4418
#4420
#4417
#4420
#4417
F
F
F
F
NOTCH
GAIN
TREBLE
REVERB
BASS
VOLUME
D
D
D
D
P6
P5
P4
P3
P2
P1
AM50
M571.PCB_POT_LIST
1K
R35
2N2.
C67
10K
R15
47K
R47
1K
R48
4K7
R46
4K7
R45
10
9
8
7
6
5
4
3
2
1
#
DESCRIPTION OF CHANGE
VER#
DATE
MODEL(S):-
D
D
D
D
D
D
OCT/06/03
MAR/22/01
MAY/03/00
JAN/18/00
V
V
V
V
V
V
1.50
1.40
1.30
1.20
N
N
N
N
N
N
CORRECT_POLARITY_OF_HORN
PC#6358_E_VERSION_XFMR_#1206->1309E
UPDATE_CE_PWR-SUPPLY
ADD_HISTORY/POT_BLOCKS
AM50
M571.SCH_DATABASE_HISTORY
0.5W
330R
R203
470N
C62
100N
C63
4K99
R49
10K0
R11
562R
R6
4K99
R34
562R
R5
2K
R1
10K0
R19
15K
R83
47K
R33
180K
R52
"P28"
STYLE
1K5
R16
68K
R17
MPSA43
E B C
MPSA56
220R
R29
220R
R30
220R
R32
10K
R103
2/4
TL072
U3
6
5
7
10K
R105
33R
R90
100P
C3
1K
R70
0.5W
330R
R205
100N
C27
D31
A13
Q10
RED
LED2
33K
R31
100K
R65
100N
C27A
D25
49K9
R7
10K0
R4
100N
C151
2U2
63V
C121
1M
R3
1U
63V
C100
220R
R28
10K
R84
10K0
R14
10K0
R82
10K
R85
2N2
C64
100K
R161
NC
V_IN+
V_IN-
MUTE
GND
NC
NC(+)
V-
OUTPUT
NC
V+
11
10
9
8
7
6
5
4
3
2
1
LM3876T
10K
R18
10K0
R89
120R
R53
1/4
TL074
U6
2
3
1
4K7
R25
4K7
R51
0.5W
330R
R207
D6
2K49
R41
10K0
R42
4K75
R50
10K0
R80
10K0
R12
18N
C60
SW1
IN
OUT
NOTCH
100N
C152
3/4
TL074
U5
9
10
8
2/4
TL074
U5
6
5
7
1/4
TL074
U5
2
3
1
CW
D
B
100K
NOTCH
P6
10K0
R44
10K0
R81
#7322
8"
8R
40V
220N
C23A
33R
5W
R24A
1K
R20A
15K
R22A
18N
C61
10U
63V
C17A
10K
R21A
D10A
CW
TREBLE
50K
B P4
CW
BASS
50K
B P2
CW
VOLUME2
10K
5C P5
100U
25V
C18A
16V
1N5246B
ZD4A
100K
R55
RCA
REV_SEND
J11
1
2
D60
"P27"
STYLE
10R
0.5W
R25A
10N
C2
100N
C58
100K
R40
A13
Q10A
50V
1U
C22A
LM3876
U4
9
10
3
7
1
5
4
8
100N
C44
680P
C16A
2K
R86
5K
R43
47N
C21
RED
LED1
100N
C50
100N
C42
100N
C57
D S G
2N5638
100N
C45
100N
C150
100N
C43
15P
C1
100P
C4
CW
VOLUME
10K
5B P1
15P
C12
1N
C11
100N
C10
1N
C22
1N
C14
1N
C13
10K0
R8
100P
C16
1/2
TL072
U10
2
3
1
100P
C51
33U
16V
C9
33K
R65A
10R
0.5W
R23A
68N
C68
680P
C15A
1N4004
D5A
10K
R91
2K
R87
100K
R13A
50V
1U
C21A
330U
25V
C28
D26A
0.8A-SB
F1
330R
0.5W
R201
1N5402
D4
DATE:
TITLE:
SCH ISSUE:
MODELS:
PCB#&VER:
NAME:
YORKVILLE
SHEET OF
1.50
AM50_ACOUSTIC_AMP
OCT/06/2003
M571.SCH
AM50
M571
1
1
100U
16V
C8
249R
R63
1N5402
D3
RED
LED3
1K5
R66
2200U
40V
C25
22n
400VC90
2200U
40V
C26
120Vac
60Hz
#1309
T1
16V
1N4745A
ZD3
10K0
R10
CW
REVERB
5B
10K
P3
4n7
250V
C91
16V
1N4745A
ZD2
1N5402
D2
1N5402
D1
330R
0.5W
R202
180N
C23
0.5W
330R
R204
330U
25V
C27
249R
R64
100P
C56
330N
C55
10N
C66
33U
16V
C6
4K99
R61
4K99
R62
20K0
R59
20K0
R60
S
R
T
LINE-OUT
NO_GOLD
JB4
1
2
3
4
5
6
2/2
TL072
U7
6
5
7
BC550C
C B E
BC560C
T400mA
22n
400V
230Vac
50Hz
#1309E
0.5W
330R
R206
120R
R9
220N
.
C65
2/2
TL072
U1
6
5
7
4/4
TL074
U5
13
12
14
LG
LG
LG
IG
IG
IG
+35VDC
+35VDC
-35VDC
-35VDC
BOG
BOG
BOG
BOG
BOG
BOG BOG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
SG
-16V
-16V
AG
AG
AG
AG
AG
+16V
+16V
+16V
+16V
YEL
RED
RED
BLK
100MVRMS
100mvrms
PIN 1
CLIP
CLIP
POLY
POLY
POLY
F1
SW1
C32
T1
EXPORT
GRN/YEL
BROWN
BLUE
WHITE
GREEN
BLACK
PIN OUTS
LINE OUT
REVERB TANK #3586
VOLUMES AT 10, TONES AT 0
AC VOLTAGES MEASURED AT 1KHz AND WITH
ALL UNMARKED DIODES ARE 1N4148
NOTES:
3mVrms
1Vrms
CHANNEL 2
INPUT
INPUT
CHANNEL 1
BLK
