BOSE 250563 Schematic
8
8
7
7
6
6
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
R54 7.50KR35 2.74K
Q4
J107
1
3
2
D
S
G
Q2
J107
1
3
2
D
S
G
Q3
J107
1
3
2
D
S
G
Q1
J107
1
3
2
D
S
G
C65
0.1uF
C66
0.1uF
C68
0.1uF
R12
475
C26
560pF
C64
0.1uF
C67
0.1uF
U25
NJU201A
2
15
10
7
3
14
11
6
1
16
9
8
1345
12
+V -V GND NC
CTRL1
CTRL2
CTRL3
CTRL4
R28 2.00K
R27 2.00K
D16 BAV99
1
32
C28
560pF
R78
30.1K
R14
475
R76
30.1K
U36F
74HC04
13 12
U1D
TL074
13
12
14
-
+
U1C
TL074
9
10
8
-
+
U6B
TL072
6
5
7
-
+
N2B
10K
72
N2A
10K
81
C6
16pF
N1D
54
J6
CON2
1
2
U36E
74HC04
11 10
D4
31
D3
31
U15B
NJM4580M
6
5
7
-
+
C83
2.2uF
+
C42
0.1uF
C18
100pF
D13 BAV99
1
3 2
D14 BAV99
1
3 2
U8B
TL072
6
5
7
-
+
U8A
TL072
2
3
1
-
+
U7B
TL072
6
5
7
-
+
R1
N/A
D6
FMMD914
31
D5
FMMD914
31
U23
NJU7312AM
3
2
4
6
7
8
10
11
29
28
27
25
24
23
21
20
5
9
12
26
22
19
17
16
14
30
15
1
13
18
D
CK
ST+V-V
GND
C17
100pF
R85
100K
C63
0.1uF
R75
30.1K
U21C
SSM2164
75
6
VCA
LOG
U21B
SSM2164
1012
11
VCA
LOG
R82
100K
U21D
SSM2164
1513
14
VCA
LOG
U32D
74HC00
12
13
11
C92
4.7uF
+
C9 33pF
C53
0.1uF
C51
0.1uF
N4C
10K
6 3
N4D
10K
5 4
C52
0.1uF
C55
0.1uF
C54
0.1uF
C56
0.1uF
R58
10.0K
N4A
10K
81
R4
0-ohm
R3 N/A
N4B
10K
72
C97
10uF
+
R2
N/A
R114
100.0K
R115
100.0K
R112
100.0K
Q7
2N3904
R116
100.0K
U36A
74HC04
1 2
R113
100.0K
R117
100.0K
U36C
74HC04
5 6
U36B
74HC04
3 4
U36D
74HC04
9 8
R118
100.0K
C84
2.2uF
+
D11 BAV99
1
3 2
U32A
74HC00
1
2
3
R98
N/A
R99
N/A
D12 BAV99
1
3 2
C43
0.1uF
C44
0.1uF
U27 TC9412AF
DATA
13
CLOCK
12
STROBE
14
IN1
4
IN2
21
OUT1
3
OUT2
22
NC2NC8NC10NC15NC17NC
23
-151+15
24
RGND
7
DGND9DGND11DGND16RGND
18
LD1A5LD1B6LD2A20LD2B
19
N12A
100
81
C19
100pF
R17
909
N12D
100
54
C30
560pF
C38
5600pF
C20
100pF
N11B
100
72
U2A
TL074
2
3
1
-
+
R57
10.0K
U11B
NJM4580L
6
5
7
-
+
N11C
100
63
N11D
100
54
U2B
TL074
6
5
7
-
+
N12B
100
72
N11A
100
81
C87
2.2uF
+
U13B
NJM4580M
6
5
7
-
+
U2C
TL074
9
10
8
-
+
C24
330pF
C4 16pF
C46
0.1uF
C45
0.1uF
C47
0.1uF
C23
330pF
C31
1000pF
U2D
TL074
13
12
14
-
+
J4
CON3
1
2
3
N12C
100
63
C48
0.1uF
C49
0.1uF
C85
2.2uF
+
U14A
NJM4580M
2
3
1
-
+
GAP5
R94
1.00M
C29
560pF
C2 16pF
C22
330pF
N13B
100
72
N13A
100
81
C3 16pF
C88
2.2uF
+
C32
1000pF
U12B
NJM4580L
6
5
7
-
+
N13C
100
63
C37
5600pF
C25
560pF
U11A
NJM4580L
2
3
1
-
+
N13D
100
54
R26
2.00K
U12A
NJM4580L
2
3
1
-
+
C1 16pF
C36
5600pF
N2D
54
U13A
NJM4580M
2
3
1
-
+
R81
100K
C21
330pF
C96
10uF
+
R25
2.00K
C35
5600pF
R102
12.40K
J3
CON3
1
2
3
GAP6
U31D
74HC00
12
13
11
GAP7
C86
2.2uF
+
U21A
SSM2164
24
3 1
VCA
LOG
U15A
NJM4580M
2
3
1
-
+
GAP8
R8 121
R103
12.40K
R21
1.00K
D21 12V
R63
10.0K
C91
4.7uF
+
R104
12.40K
R22
1.00K
R83
100K
R48
4.99K
R39 3.01K
R33
2.74K
C40
.033uF
R41
3.74K
Q5
2N3906
3
2
1
R89
274K
R97
2.74M
R111
100.0K
J2
1
2
3
4
5
6
7
8
R45 4.22K
U31A
74HC00
1
2
3
N3A
10K
81
U32C
74HC00
9
10
8
C10 33pF
N3B
10K
72
C11 33pF
N3C
10K
6 3
C12 33pF
U28 TC9412AF
DATA
13
CLOCK
12
STROBE
14
IN1
4
IN2
21
OUT1
3
OUT2
22
NC2NC8NC10NC15NC17NC
23
-151+15
24
RGND
7
DGND9DGND11DGND16RGND
18
LD1A5LD1B6LD2A20LD2B
19
R18
909
Q6
2N3904
J5
CON2
1
2
U41 74HC165
SER
10
A
11
B
12
C
13
D
14
E
3
F
4
G
5
H
6
CLK
2
INH
15
SH/LD
1
QH
9
QH
7
C50
0.1uF
C5
16pF
D1
31
U46
74HC595
SD
14
SCLK
11
CLR
10
PCLK
12
OE
13
QA
15
QB
1
QC
2
QD
3
QE
4
QF
5
QG
6
QH
7
QH
9
R95
1.00M
N1A
10K
81
D2
31
C41
0.1uF
U1B
TL074
6
5
7
-
+
U31C
74HC00
9
10
8
R13
475
U14B
NJM4580M
6
5
7
-
+
R101
12.40K
U31B
74HC00
4
5
6
C27
560pF
R77
30.1K
C15 100pF
R72 30.1K
U1A
TL074
2
3
1
-
+
R71
30.1K
U6A
TL072
2
3
1
-
+
N1C
10K
63
N1B
10K
72
J1
1
2
3
4
5
6
7
8
9
10
R59
10.0K
C57
0.1uF
C62
0.1uF
C61
0.1uF
C58
0.1uF
C60
0.1uF
C59
0.1uF
R60
10.0K
C72
0.1uF
C75
0.1uF
C71
0.1uF
C74
0.1uF
N2C
10K
63
D15 BAV99
1
32
R55 7.50K
R11
475
R61
10.0K
C73
0.1uF
R96 2.74M
R92 510K
R62
10.0K
C70
0.1uF
R90 510K
R53 7.50K
R44 4.22K
U32B
74HC00
4
5
6
R74 30.1K
C16 100pF
R88 274K
R73
30.1K
R34 2.74K
R84
100K
R38 3.01K
R7 121
N3D
10K
5 4
U7A
TL072
2
3
1
-
+
R91
510K
R93
510K
C69
0.1uF
AMP1_IN-
TA2_1
TA1_1
TA2_2
TA1_2
RA3_2
RA2_2
RA1_2 RA1_1
RA2_1
RA3_1
CONTROL_2
+AOUT1
CONTROL_2
+AOUT2
-AOUT2
CONTROL_1
NABL1
NABL2
RA1_2
MONITOR2
CLOCK
TA2_1
OUTPUT1
ATCOM1
ATCOM2
PEAK1
AIN1
ENABLE
PEAK2
DATA
MUTE3
ENBAR
MONITOR1
DATA
ID
VC2_CLK
ATCOM1
ATCOM2
PEAK_IN_1
RA2_2
PEAK_IN_2
NABL0
MUTE_ALL
CLOCK
CH_SEL
AIN2
TA1_2
DATA
MUTE1
RA3_2
NABL3
AIN2
MUTE2
ATCOM1
RA3_1
D2
TA1_1 ATCOM1
D1
OUTPUT2
THRESH2
ID
MUTE4
OUTPUT1
RA1_1
RA2_1
TA2_2
CLOCK
DATA
NABL3
FET_GATE
NABL2
VC1_CLK
CLOCK
NABL1
VC2_CLK
CLOCK
MUTE4
MUTE2
MUTE1
FET_GATE
FET_GATE
MUTE3
FET_GATE
FET_GATE
OUTPUT2
-AOUT1
AMP1_IN+
AMP2_IN-
AMP2_IN+
NABL0
ENBAR
D3
MUTEBAR
PEAK_IN_1
DATA
VC1_CLK
NABL1
PEAK_IN_2
AIN1
CONTROL_1
CONTROL_1
LIMOUT2
ATCOM2
LIMOUT1
CONTROL_2
ENABLE
CH_SEL
MONITOR1 MONITOR2
D2
SEL2BAR
D3
SEL1
SEL2
D1
SEL1BAR
SEL1
LIMOUT1
MONITOR2
SEL2BAR
MONITOR1
SEL1BAR
THRESH2
THRESH1
LIMOUT2 THRESH2
THRESH1LIMOUT1
SEL2
LIMOUT2
THRESH1
DATA
NABL2
PEAK2
PEAK1
MUTE_ALL MUTEBAR
CH_SEL
+15
-15
-15+15
D
R
R
R
D
D
D
R
+5A
D
D
D
R
D
R
R
R
R
D
R
+5A
R
D
D
+5D
D
D
+15
-15
D
D
-15
+15
R
+15
-15 +15-15
+15 -15
-15
RD
+15
-15
+15
+5D
+5D
+5D
+5D
-15
R
R
D
D
R
+15
R
R
D
-15
-15
D
-15
D
+15
D
D
D
D
D
+5D
R
R
R
R
R
R
R
R
+5D
AMP MONITOR INPUTS
VOLUME CONTROL
Attack Selected Equivalent
Time Resistor Resistance
----------- --------------- --------------10msec <none> 2.00Kohm
5msec 3.01Kohm 1.2Kohm
1msec 121ohm 200ohm
Release Selected Equivalent
Time Resistor Resistance
----------- -------------- ----------------
1.2sec <none> 510Kohm
1.0sec 2.74Mohm 430Kohm
0.7sec 510Kohm 255Kohm
0.5sec 274Kohm 180Kohm
Rectifier Attack control
Release control
Threshold control
Stereo coupling
RC = 75uS
Return directly to
J1-10, DGND.
Return directly to
J1-10, DGND.
16Hz
21kHz
NABL0 Primary register, HC595
NABL1 Make up gain 9412
NABL2 Limiter threshold 9412
NABL3 Limiter attack/release 7312
-5A
U41U31 U46U32 U36
CGND
CGND
R4 = 0-ohm
for G43C1.
G60B1 ID INFO:
LOADED=4.448V
CODE=38F HEX
CODE=044 HEX FOR G43C1
R3 = 0-ohm
for G43C2.
CODE=045 HEX FOR G43C2
U1 U6 U7U2 U11U8 U12
U1 U7U6U2 U8 U11 U12
SIGNAL
142KHz
LPF@
10.1dB
GAIN= STABILIZED
OUTPUT AMP ESDRFIMUTE
OUTPUT VOLUME CONTROL
BUFFER
HPF@
2.4Hz
INPUT
VCA LIMITER
MUTE CIRCUIT
VOLUME CONTROL
PEAK DETECTORS LOGIC
150VAC MAX
ON AMP INPUTS ON AMP INPUTS
150VAC MAX
MOTHERBOARD
CONNECTORS DIGITAL ID
AUDIO
PATH
2.4Hz
INPUT
VCA LIMITER
HPF@
BUFFER
CHANNEL 1 CHANNEL 2
NOTES
1.6Hz
HPF@
0.7Hz
HPF@
LIMITER CONTROL
SOURCE SELECTOR
U21 U28U27
U21 U28U14 U27
U14
U15
U15
U13
U13
DECOUPLING
LIMITER CONTROL CIRCUIT
From A4
From A4
From A4
From A4
To B6, A1
From D7
To B6, A2
From D5
From C5 From C5
To A2, B6 To A2, B6
C5
B2
C1
To B6
To B6
From C1
From C1
From C1
From C1
To D2
To D2
To D2
To D2
From C1
To C5
From C5
From B1
To D8
To D6
From C3
To C2
From C7
From B7
CLOCK to B2, B6, C3
DATA to A8, C3, C4, D5
ENABLE to B2
CH_SEL to B1, B2
From B6
From B6
To C5
To C5
From A5
From A5
To C8
To B8
B5
B5
B5
B4
B4
A5
A5
A5
A5
A5
B1
C5
C5
D3
A4
A4
D3
C7
C6
From C5
From C5
From C5
From C5
From C1
From C1
FromB1
From C5
From C5
From C5
To C4
To C3
From C5
From C2
From C2
From C2
To C3
To B3
To B3
To B6
To D5
To A8
To A8
To A8
From C2
From C2
From B2
From B2
From C6
From C7
To D8
To D6
A1
A1
B1
B2
C5
SERVICE MANUAL PART NUMBER 256689
LINE LEVEL OUTPUT MODULES
(WITH AND WITHOUT LIMITER)
PART NUMBER 250563-1,-2
SHEET 1 OF 1
TM
BOSE ENTERO SE 16 AUDIO PROCESSOR
R
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