BHA-1 OVERALL SCHEMATIC
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
E
E
D
D
C
C
B
B
A
A
LTD
P.O. BOX 2170, 677 NEAL DR. PETERBOROUGH, ON. CANADA K9J 7Y4
PHONE (705) 742-5325 FAX (705) 742-0882 WWW.BRYSTON.CA
Date :
File :
Sheet :
of
Rev :
Drawn :
Title :
BHP1 - HEADPHONES AMPLIFIER
7J4
5CF
100p
5RF
1K
0
5RB
1K0
R10L
2K0
MAR 2012
ST
1
2SG
5J2
VRB
10
0K
5J1
R9L
100R
R6L
49R9
R5L
4K99
R3L
49R9
R7L
4K99
C
4L
47p
5J3
R2L
4K99
2SIN
7J3
BAL OUT
VOL
VRA
100K
G
QF1
+
CF3
22u
2ZM
5.1V
R1 100R
+33A
-33A
6RL
100K
+
CA
+
CD
+
C15
2200u
+
CR2
22u
+
CR1
22u
G
CHAS
+12V
L-
R+
R-
L+
RL3C
RL1B
RL1A
RL1C
RL2C
R4L
4K
99
R8L
4K99
G
5J4
5J5
R9R
100R
R2R
4K99
RL2B
RL2A
5RA
1K0
G
CR3
100N
CR4
100N
5
BHA1 OVERALL
7J1
OUT L
G8
7J2
OUT R
1R2
34K8
1R1
2K61
1R5
150R
1R7
150R
1R8
68R1
1R9
68R1
1R3
2K61
1R4
34K8
1R
6
150R
1C1
47
p
1C
5
47p
1C4
6.8p
1C
3
100N
1C2
6.8p
1Q1
100
1Q6
100
1Q2
100
1Q5
200
1Q3
200
1Q4
200
1Q8
200
1Q7
100
1D2
1D3
1D1
1C8
100N
+
1C
9
47u
+
1C7
47
u
1R11
100R
1R10
100R
1C
6
100N
R5R
4K99
R7R
4K
99
C3R
47p
C
4R
47p
RL3B
R4R
4K99
R8R
4K99
RL3A
G
2R2
34K8
2R1
2K61
2R5
15
0R
2R8
68R
1
2R9
68R1
2R
3
2K61
2R4
34K8
2R6
150R
2C1
47p
2C5
47p
2C4
6.8p
2C3
100N
2C2
6.8p
2Q1
100
2Q6
100
2Q2
100
2Q5
200
2Q3
200
2Q4
200
2Q8
200
2Q7
100
2D
2
2D
3
2D1
2C
8
100N
+
2C9
47u
2R11
100R
2R10
10
0R
2C6
100N
C3L
47p
3Q1
100
3Q2
100
3Q6
100
3Q5
200
3Q4
200
3Q3
200
3R
10
1K
0
3R9
150R
3R3
2K
61
3R4
34K8
3R
12
5R
11
3R13
5R11
3D2
3C3
100N
3R1
2K61
3R2
34K
8
3R8
150R
3C1
47p
3D1
3R19
100R
3R18
100R
3C
5
47p
3C4
6.8p
3C2
6.
8p
3Q9
MJ
D
24
3
3Q10
M
JD
253
3C
8
100N
3C6
100N
+
3C7
47u
+
3C9
47u
G
G
3RA
1K0
5Q1
100
5Q2
100
5Q6
100
5Q5
200
5Q4
200
5Q3
200
5R10
1K0
5R9
150R
5R3
2K61
5R
4
34K8
5R
12
5R
11
5R13
5R11
5C3
100N
5R1
2K61
5R2
34K8
5R8
150R
5C1
47p
5D1
5R19
100R
5R18
100R
5C5
47p
5C4
6.8p
5C2
6.8p
5Q9
M
JD
243
5Q10
M
JD
253
5C8
100N
5C6
100N
+
5C9
47u
G
6CF
100p
6RF
1K0
R10R
2K0
6RA
1K0
4Q1
100
4Q2
100
4Q6
100
4Q5
200
4Q4
200
4Q3
200
4R9
150R
4R3
2K61
4R4
34K8
4R12
5R11
4R
13
5R
11
4D2
4C
3
100N
4R1
2K61
4R2
34K8
4R8
15
0R
4C
1
47p
4D1
4R19
100R
4R18
100R
4C5
47p
4C4
6.8p
4C2
6.8p
4Q9
M
JD243
4Q10
M
JD253
4C8
100N
4C6
100N
G
G
4RA
1K0
6Q1
100
6Q2
100
6Q6
100
6Q5
200
6Q4
200
6Q3
200
6R9
150R
6R
3
2K61
6R4
34K8
6R12
5R11
6R
13
5R
11
6D2
6C3
100N
6R1
2K61
6R2
3K48
6R8
15
0R
6C1
47p
6D1
6R19
100R
6R18
100R
6C5
47p
6C4
6.8p
6C2
6.8p
6Q9
M
JD243
6Q10
M
JD
253
6C8
100N
6C
6
100N
+
6C
7
47u
G
G
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10
B
11
B
12
B13
-20B
+20B
+
5C7
47u
+
2C7
47u
+
4C7
47u
+
6C9
47u
+
4C9
47u
+20D
+20F
+20C
+20E
-20D
-20F
-20E
-20C
-20A
+20A
4RM
10K
0
5CM
470p
3OUT
4OUT
6OUT
5OUT
R3R
49R9
R6R
49R9
J8T
J8R
J8S
2R7
150R
3_A
2_A
H1
1560-OB
H2
1560-OB
H3
1560-OB
FU1
FIDUCIAL
H5
1560-OB
H6
1560-OB
H7
1560-OB
H8
1560-OB
H9
1560-OD
3R17
10R0
3RH 20K
0
6RB
1K0
4RF
4K75
4RH
20K0
2_B
3_B
H11
1560-OD
H12
1560-OD
LE
FT
VRBB
BAL
R1L
4K99
C1L
270p
C1R
270p
R1R
4K99
R2
100K
3CF
100p
3CH
47p
4CF
100p
4CH
47p
D2
S1G
D1
S1G
D3
S1G
R
IGH
T
VRBA
B
AL
7R7
5R11
7R8
5R11
7R6
5R11 7R5
5R11 7R4
5R11 7R3
5R11
7R1
5R11
7R2
5R11
4R14
5R11
4Q11
M
JD
243
4R
15
5R
11
4Q12
M
JD
253
3R
14
5R
11
3R15
5R11
3Q11
M
JD243
3Q12
MJ
D
25
3
6R14
5R11
6R
15
5R
11
6Q11
M
JD
243
6Q12
M
JD
253
5R
14
5R
11
5R15
5R11
5Q11
M
JD243
5Q12
M
JD
253
1
2
3
4
5
6
7
8
9
5J6
4
1
2
3
1
2
3
1
2
3
G
5R21
10R0
ac
ac
+
-
BR3
RG
100R
chassis
PG
GNYL WIRE
12V EXT PWR UP
5J7
8J3
BAL OUT
L-A
R+A
R-A
L+A
8J1
OUT L
8J2
OUT R
8R7A
5R11
8R8A
5R11
8R6A
5R11
8R5A
5R11
8R4A
5R11
8R3A
5R11
8R1A
5R11
8R2A
5R11
4
1
2
3
1
2
3
1
2
3
JFSG
RL7B
RL7A
RL7C
D7
S1G
D8
S1G
FU2
FIDUCIAL
FU3
FIDUCIAL
JFS4
JFS3
PCB
PCB1
BHA1 AC IN R5
PCB
PCB5
BHA1 MB R5
PCB
PCB7
BHA1 FEMALE R5
PCB
PCB8
BHA1 MALE R5
GND ISO
OPAMPS SUPPLIES
RELAYS SUPPLY
PWRUP MUTE
5P6
GL
1
2
3
4
5
6
7
8
9
8P1
ON LED
R B
6P3
6P1
PCB
PCB6
BHA1 AC PSW R5
D9
S1G
4D3
4Q7
100
4Q8
200
4R
11
499R
6Q7
100
6Q8
200
6D3
6R
11
499R
5Q7
100
5Q8
200
5D2
5R11
499R
3D3
3Q8
200
3R
11
499R
3Q7
100
CONNECTOR OPTION
5R6
10K0
6R7
10K0
6C14
100p
6R6
10K0
6C13
100p
6C
E
100p
G
6R17
10R0
6CA
270p
4R7
10K0
4C14
100p
4R6
10K0
4C13
100p
4C
E
100p
G
4R17
10R0
4CA
270p
5D3
5R7
10K
0
5C13
100p
5C14
100p
G
5CE
100p
G
3CE
100p
3R6
10K0
3R7
10K
0
3C13
100p
3C14
100p
G
G
3RF
4K
75
3CA
270p
3C11
100N
G
3C10
100N
G
4C11
100N
G
4C10
100N
G
5C11
100N
G
5C10
100N
G
6C11
100N
G
6C10
100N
G
5R17
10R0
5CA
27
0p
G8
6P2
A/C VERSION USE PCB1,2 AND 6 ONLY
5
1
3
2
6
4
9J MPS2
RLP2B
Q2
Q1
RA2
4K99
3IC1
LDA210S
RA4
4K99
RA1
1K0
RA3
1K0
3RE
1K0
12V
3P1
ON
1
3
5
MPS2 VERSION USE PCB 3 + 4 ONLY
PCB
PCB3
BHA1 - MPS2 R5
RLP1A
PCB
PCB4
BHA1 MPS2 PS R5
RLP2C
RLP2A
RLP1B
RLP1C
ON LED
R B
+
+
4C15
4700u
+
+
6C15
4700u
+
+
5C15
4700u
+
+
3C15
4700u
12V4
ON4
WIRES
G8A
FU4
FIDUCIAL
G6
GLD
ON5
G
1
2
3
4
5
6
7
1
2
3
4
5
6
7
FJ1
254PW07E
INPUT BUFFERS
POWER OP AMPS
POWER OP AMPS
SW PWRA
SW PWRB
6
7
M
M2
B
EXT
REA
REB
REC
QR1
MJE15031
QR2
MJE15030
DR2
DR1
+VB
-VB
+VA
-VA
+VA
-VA
+VA
-VA
+VA
-VA
+VB
-VB
+VB
-VB
+VB
-VB
6R10
1K0
4R10
1K0
RR1 1K5
R
R
2
1K
5
+
CG
+
CK
+
CR10
22u
+
CR9
22u
CR12
100N
CR11
100N
QR3
MJE15031
QR4
MJE15030
DR4
DR3
R
R
3
1K5
R
R
4
1K
5
-33A
+33A
+
CB
2200u
+
CE
2200u
+
CC
+
CF
+
CH
2200u
+
CL
2200u
+
CJ
+
CM
G8A
1
2
3
4
5
6
7
8
9
7P1
SW PRA
SW PRB
RCA
MINI
BAL
20dB
14dB
GAIN
INPUTS
LOGO
G
5R20
10R0
G
3CM
470p
3R
21
10R0
3R
20
10R0
G
3RM
10K
0
G
G
5RM
10K0
4CM
470p
4R21
10R0
4R20
10R0
G
6CM
470p
6R
21
10R0
6R
20
10R0
G
6RM
10K
0
G
7R10
5R11
7R9
5R11
fuse
1J1
RL5C
RL5A
RL5B
RL6A
RL6B
RL6C
+
-
AC
AC
2BR1
+
-
AC
AC
2BR2
1
2
3
2P3
2P1
L
N
2CD
10N
2CB
10N
2CA
10N
2CC 10N
2CF
10N
2CE
10N
2CL
33V+
33V-
PCB
PCB2
BHA1 TX AC SEL R5
RED
VIO
RED
BLK
ORN
BRN
WHT
GRY
YEL
VIO
BLU
TF1
15V+
R2
G2
R1
V2
V1
2P2
2RA
120/240
2RB
100/220
2RC
100/120
2RD
120V
2RE
100V
2RF
220/240
+
2CM
2200u
+
2CP
2200u
JFSN
JFSL
2CH
10N
2CG 10N
G6
CHAS
G
+
2CK
2CJ
100N
2QA
2RH
1K5
12V+
4RB
75K
0
2P4
5P4
3P2
4P2
+
-
AC
AC
4BR1
+
4CR
22u
