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1
2
3
4
5
6
R109 1k
F
P101 B100K C/T
3 1 2
MASTER SECTION
R110 1k R24 U102A
3
P21 B100K C/T
1 2
OUTPUT
R25 1k R30
Treble
R111
P-Sig
GND
+U102 2 3 8 1
E-Sig
R107 100k
C107 1n
C22 100p R21 18k
1k
Treble
CLIP
+U21 8 2 3
1k
2 J21 4 1
C24 1n8 R27 39k
F
J8003 C26
1
C108 220 0.1
4558
4 -U102
R29 820
1
LINE INPUT
J101
2 4 1
+U101
R114 10k
2
C110 1u R115 1k
1
4558
4 -U21
P23 B10K C/T
2
R106 18k
8
2
C106 4558
4 -U101 1
R112 R108 100k 10k
P102
3
1
R113 10k P103 B50k
3
6
J8003
U101A 22u
C104 100p
B100K C/T C109 33n
Volume
2 1
U21B R116 15k
1u
10k C25 39n
10k
3
10u
3
1u
5
4558
7
R22 1k
C23
R26
2
C105
Bass
C21
B100K C/T P22
1
U21A 10u
SEND
2 J22 4 1
Bass
3
R28
MASTER
J8003
RETURN PA REVERB
R59 15k
3 2 J23 4 1 E
E
R105
R117 2
CHANNEL 1...4 Component Designators For Ch: 1..4: 1xx .. 4xx
7
Rev/Efx
3
15k P104 B50k C52 100p R51 C51 47k
6
MIC INPUT
J102
1 3 2
C101 22u C102 22u
R101 560
6
10k R104 5k6
5
R58 P51 1k B50K R55 100k
1
C59 3u3 R57 100k
J8003
2
R102 560 C103 100p
4558
U101B
CLIP
D81 4148
+15V
C54
+U51 6
5mm LED Red 5mm LED Green
XLRM
R83 47k R81 56k
6 5
D82
D83 1u
5
U51B
4
2 1
10k R42 10k
CD/TAPE LEVEL
33k C42 100p
C82 0.33u
R82 56k
R84 220
1
J41
3
R41 R47
U41B
Rev51 REVERB
-U51
R85 1k8
R86 2k2
2 Springs 600-2.2K
C50 2u2 R50 33k R65 1k C63 47u R70 2k2/0.5W R71 C66 100u 2k2
+VCC
4
CD INPUT
C81 1n
2
-
D
22n
4558
73
Q81 C3198
56k R53 10k
8
4558
7
+
R103 47k
C53
10n R52
2 3 1 8
ININ+ GN1 GN2
OUT BYP
5 7
L51 22uH
1 2
Shielded cable!
C55 3u3 C56
3 4 33n
+U51
C57 47p C58 R56 1k
EFX RETURN
1 2 J51 4 1 D
R54 2k2
2 3
U52 LM386
4558 U51A 1u
J8003
EFX SEND
2 J91 4 1
1
Dual RCA Input R43 10k
3
8
P41 C41
2
+U41
R44 2k2
2 3
C43 4558
4 -U41 1
R60 100k
J8003
R48 15k U1 7815
1 I O 3
U41A
1u
2 3
J42
C
2
2 4 1
10u B50k
J8003
Q64 C1027
1 3
AC230V 2.0A AC120V 4.0A
F1 FUSE
C1 *S/K 1n/500V
3
D2 4002 D3 4002 D4 4002
C2 220u/25V
C4 0.1u
C6 220u
1
2
PA
R61 2k2
C61
3 2
Q61 Q62 A1266GA
2
1
A1266GA
3
33p R69 39k R68 1k C67
3
D64 4148
R73 220/0.5W
1
AUX INPUT
D1 4002
+15V
R66 100k
C65
D63 4148
Q66 D1047 R75 0.5/5W
C
SPEAKER 1
2 J61 4 1
S1
1 4 5 6
2u2 D61 4148 D62 4148
1
-
SRA1101
*SVA Adj.
1 3 3
2
C3 220u/25V
1
C5 0.1u
O 3
C7 220u
TP61 B500
2
R74 220/0.5W
R76 0.5/5W Q67 B817
R77 10/0.5W
J8003
2
SPEAKER 2
C69 100n
2 J62 4 1
I
B
KBU6J J1 AC Socket
2 7 8
Br1
+
Tr1 MT-60E
C8 4700u/50V C9 4700u/50V
-VCC
*Adj
C68 47u
1
R72 150
*Bias Adjustment
+U21 +15V +U51 +15V
2
+VCC
U2 7915
R64 12k*
R67 6k8
C64 22u
2
3
Q63 C3198GR
1
-15V
R62 6k8
C62 100p
R63 100k
33p
Q65 A1023
J8003
B
-VCC
+U101
+15V
+U102
+15V
+U41
+15V
1) SVA/B500:
Q66 Base to GND Q67 Base to GND
= DC 0.58V = DC 0.58V = DC 0.58V
Title
All unspecified capacitors in uF, resistors carbon 5%
R11 C11 47u
A
R13 C13 47u C14 47u 100 C15 47u C16 47u
R15 100 C17 47u C18 47u
R17 100 C19 47u C20 47u
R19 100
100
12%(/6(OHFWURQLFV
Barnerstrasse 42, 22765 Hamburg, Germany
http://wwww.nobels.com - email: [email protected]
A
2) Res/R64:
1/4W 12K-15K
C12 47u
R12 100
R14 100
R16 100
R18 100
R20 100
PA-460R
Size: A4 Rev: 2f of
Number: Date: -15V
-U101
-15V 1
-U102
-15V
-U41 2
-15V
-U21
-15V
-U51 3
27-Jan-2000
Time:
17:53:57
Sheet 1
1
(c) 1999 - ALL RIGHTS RESERVED
4 5
File:
R:\$PRO\AMPS\PA460R\DSGN\PM460R2F.SCH 6