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8
7
D
U707
6
-
7
1/2
5
+
4559
(8=+12V,4=-12V)
C727
R790
B_EQAUD
1.0
16.5K
R812
Q712
100K
117921
MUTE_LR
+34V
R772
C725
100
100K
D718
BAV99L
1
TP717
D720
TP718
TP719
D
Q725
Q724
2SA1179
S
C
2
R791
R794
C762
C765
1.0M
301
1.0
1.0
1
2
2
1
-12V
C764
0.1
2
1
R743
CMP_BIAS
100K
C719
U702
7
+
1
CMP_OUT
1/4
0.47
6
-
B
LM339
(3=+12V,12=-12V)
R744
100K
C718
R757
16.5K
10
2
R759
R758
TP712
2.49K
49.9K
C748
.001
C713
R755
C_EQAUD
2.49K
1.0
R756
C747
D705
49.9K
.001
BAV99L
2
2
7294_STBY_C
7294_MUTE_C
R768
100K
A
C746
0.1
2
1
8
7
67
6
+34V
+34V
R773
1.0K
TIP146T
Q715
C753
D711
.0033
+17V
1N5402
R778
R774
100K
1.0K
TIP146T
119168
Q718
Q717
Q714
C755
117921
R775
R707
.001
2.49K
R789
75
200K
TP714
C759
R786
R784
200
270p
+12V
33.2K
Q713
C760
TP706
R783
117921
R787
Q716
10.0M
0.1
1
FTP741
49.9K
140349
U707
2
-
C758
R788
1
R785
1/2
3
10K
+
4559
1
.01
R710
2
R711
(8=+12V,4=-12V)
119168
5.1
R797
TP715
220
Q723
TP716
2.49K
C763
C761
C726
0.1
1
0.1
1
0.1
-12V
FILM
2
R712
1
75
C757
R793
119168
.001
Q721
4.22k
Q719
TIP141T
Q722
117921
R796
R795
100K
1.0K
D712
C766
1N5402
.0033
Q720
TIP141T
R792
1.0K
-34V
-34V
+34V
+34V
R747
1.0K
TIP146T
Q700
CMP_BIAS
R746
C742
10K
.01
119168
Q701
R745
CMP_OUT
1.0K
R703
TP701
D706
1.5K
+17V
Q702
1N5402
117921
1
D701
R734
3.65K
C749
5.6V
R735
1.0K
.001
1
+34V
1
12
7
13
2
NC3
+VS
+PWVS
14
IN-
OUT
C+SPKR
3
IN+
C712
R_EQAUD
R816
R806
4
U703
IN+MUTE
330K
10
6.8K
9
2
STBY
TDA7294
10
6
MUTE
BTSTRAP
11
5
NC2
NC1
1
STBYGND
-VS
-PWVS
1
8
15
1
R763
1
-34V
1.0K
C750
7294_STBY_LR
D708
R762
.001
7294_MUTE_LR
1
3.65K
5.6V
119168
D707
Q711
1
R706
TP704
-17V
1.5K
R769
1N5402
1.0K
Q710
117921
C752
R770
.01
10K
Q706
TIP141T
R771
1.0K
-34V
-34V
6
5
4
R733
CMP_BIAS
100K
U702
C714
9
+
14
CMP_OUT
1/4
0.47
8
-
LM339
(3=+12V,12=-12V)
R742
100K
C715
R750
16.5K
10
2
R748
R749
B+SPKR
TP711
2.49K
49.9K
FTP739
FTP740
C743
B+SPKR
.001
C717
R753
LS_EQAUD
2
J703
1.0
2.49K
R752
C745
1
2
D716
49.9K
.001
BAV99L
FTP743
2
2
FTP742
1
7294_STBY_LSRS
FTP744
7294_MUTE_LSRS
R767
1
100K
C744
-17V
0.1
2
1
R728
100K
C707
U702
5
+
2
1/4
0.47
4
-
LM339
(3=+12V,12=-12V)
C706
R737
16.5K
10
2
+34V
R739
R738
TP710
2.49K
49.9K
C738
12
7
13
.001
2
NC3
+VS
+PWVS
14
C704
R729
IN-
OUT
3
IN+
R817
4
2.49K
U700
1.0
IN+MUTE
330K
9
R736
C737
STBY
TDA7294
D702
2
10
6
49.9K
MUTE
BTSTRAP
BAV99L
.001
11
5
NC2
NC1
STBYGND
-VS
-PWVS
1
8
15
2
2
1
-34V
C736
0.1
2
1
THIS DRAWING IS BASED ON
P-CAD DATA ALL CHANGES
MUST BE MADE USING THE
P-CAD FILES ATTACHED TO
5
4
3
CLASS
DWG NO.
SD
REV
--
+34V
+34V
R730
1.0K
TIP146T
Q705
R740
CMP_BIAS
10K
C741
.01
U702
119168
Q704
13
R741
CMP_OUT
1.0K
R702
LM339
D704
1.5K
TP703
+17V
(3=+12V,12=-12V)
Q703
1N5402
117921
1
D703
R731
3.65K
C740
R732
5.6V
1.0K
.001
1
LS+SPKR
+34V
2
R802
1
6.8K
TP709
12
7
13
1
2
14
NC3
+VS
+PWVS
C702
IN-
OUT
3
IN+
RS_EQAUD
R820
C716
4
U704
IN+MUTE
1.0
330K
10
9
STBY
TDA7294
10
6
MUTE
BTSTRAP
11
5
BAV99L
NC2
NC1
STBYGND
-VS
-PWVS
1
8
15
R761
-34V
1.0K
1
C739
7294_STBY_LSRS
D709
R760
.001
7294_MUTE_LSRS
1
3.65K
5.6V
119168
Q707
D710
TP705
1
-17V
R705
1N5402
1.5K
R766
1.0K
Q708
C751
117921
R765
.01
10K
Q709
TIP141T
R764
1.0K
-34V
-34V
R779
CMP_BIAS
100K
C723
3
+
1
CMP_OUT
1/2
0.47
2
-
U706
LM393
(4=-12V,8=+12V)
C722
R780
10
16.5K
2
R782
R781
TP713
2.49K
49.9K
C756
.001
2
C720
R+SPKR
R776
3
C705
L_EQAUD
R805
4
2.49K
1.0
10
6.8K
R777
9
C754
49.9K
2
10
.001
BAV99L
11
1
D719
2
2
7294_STBY_LR
7294_MUTE_LR
LEVEL
DRAFTER
THIRD ANGLE PROJECTION
JIM RUSSELL-SMITH
3
CHECKER
KRIS McDONALD
ENGINEER
JIM SOZANSKI
2
UNLESS OTHERWISE SPECIFIED INTERPRET
THIS DRAWING PER ANSI Y14.5M-1982
SAFETY ENGINEER
GEORGE TSITSOPOULOS
NOTICE
1
MD197222.
BOSE CORP PROPRIETARY RIGHTS ARE
REL TO PROD PER
INCLUDED HEREIN. THIS INFORMATION MAY
NOT BE COPIED.TRANSFERRED OR DISCLOSED
AT REV --
EXCEPT AS AUTHORIZED BY BOSE CORP
3
1
SH
197228
1
REVISIONS
DESCRIPTION
CHK
ENG
DATE
--
--
--
--
R725
100K
C709
11
+
1/4
0.47
10
-
C710
R723
RS+SPKR
16.5K
10
+34V
R804
R719
R720
6.8K
2.49K
49.9K
C734
12
7
13
1
.001
2
14
NC3
+VS
+PWVS
R722
IN-
OUT
3
IN+
R819
C711
4
U701
2.49K
IN+MUTE
330K
10
R721
9
C735
STBY
TDA7294
D715
49.9K
2
10
6
.001
MUTE
BTSTRAP
11
5
NC2
NC1
STBYGND
-VS
-PWVS
2
2
1
8
15
1
-34V
C733
0.1
2
1
+12V
R727
100K
CMP_BIAS
R726
C708
1.0K
10
1
1
5
+
7
1/2
6
-
U706
LM393
(4=-12V,8=+12V)
+34V
12
7
13
NC3
+VS
+PWVS
14
IN-
OUT
L+SPKR
IN+
C721
R818
R807
U705
IN+MUTE
330K
10
6.8K
STBY
TDA7294
6
MUTE
BTSTRAP
5
NC2
NC1
1
STBYGND
-VS
-PWVS
1
8
15
1
-34V
SAFETY CONTROLLED
DATE
10/07/98
10/07/98
TITLE
PC BOARD
10/07/98
AM25P/AM30P SERIES II
SIZE
FSCM
CLASS
DWG NO.
REV
SD
197228
00
D
32108
--
SCALE
*
CAT. CODE
*
SHEET 1 OF 2
2
1
D
C
B
A
67
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