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C17
C15

R31
180p
R30
23# 2Qcc1]`\YVYUb
180p
F R29 R28 6k8 47k F
TREBLE
V+
C5 4k7 47k C18
R6 R5




8
10n 2 C19




3
P2 6 C16 1




3
3k9 47k 1n C24 7 3 P6
C4 R7 R8 2 5 1/50 R33 R35




3




4
220 47K U2B 3.3/50 P5 U2A 150k 2
U1B 10n KA4558 50KC V- KA4558
INPUT 6 C2 180p C6 2 2 J3 47k
100KA




1
R1 C11 7 R27 100KA




1
J1 2 5 V+ 1M R36 1




3
4 1/50 0.47/50 10k 064-05E C8




3




8
2k2 P1 MASTER




1
1 10n KA4558 2
HTJ-064-D1C2 5KB C3 1 2 PRESENCE 1/50
2 3 BASS LINE OUT
HI U1A P3




4
R2 1/50 KA4558 C7 100KA
E VOLUME E




1
1M V-

1
R0 R4




3
J2 2 1M 100n
4
1 2k2 2
HTJ-064-D1C2 MID
P4
LO 5KB




1
A+




2
Q?
SPEAKER
R13 3




2
D C2235"Y" LS1 D
820 Q7




1
3
Q3 D525"Y"




1
3
A1015 R21




1
C11 220 HB100-30




2
100p
R17 EXT. SPEAKER
470 R23
0.5/3W 2 J4
C10 4
Q2 1
Q1
HTJ-064-D1C2




2
C1815 C1815 330p R24 C14
Q4




2



2
R16 3 C13 0.5/3W
3 3 C3198 47n 47n 6
R18 5 J3
22k




1
390 R68 4 064-05A




1
1



1
C 220/2W 3 C
C12 3
Q6




2
22/25 A965"Y" R25 2
Q6
R12 R14 R15 R19 3 10 1/2W 7
D525"Y"




2
47k 18k 1k5 2k2 8
9




1
R22 1
C9
R20 220 HEADPHONES
4.7/50
2k2



A-



SW SPST FUSE 250V T1A
B B
SW1 F1 A+


KBPC102 D3-06 V+
T1 R37

- + 2k2 D1
C22 C20
3300/35 47/50 15V

J5
C23 C21 D2
15V
AC 230V 50Hz Power Cord HT-30S 3300/35
R38
47/50
>?25 2k2 Barnerstrasse 42, 22765 Hamburg, Germany
Primary: AC 230V 50Hz V-
A http://wwww.nobels.com - email: [email protected] A
Secondary: AC 19V x2 1,5A Title
A- CIRCUIT DIAGRAM
Number:
Nobels BC-30 Bass Amplifier Size: A4 Rev: 1
Date: 27-Jan-2000 Time: 17:50:01 Sheet 1 of 1
All rights reserved - Copyright NOBELS Electronics All unspecified capacitors in uF, resistors carbon 5%
File: R:\$PRO\AMPS\BC-30\DSGN\BC-30_3.SCH
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