JBL ESC 550 Source (serv.man4) Service Manual ▷ View online
4
Powered Subwoofer
BASS550
5
Powered Subwoofer
BASS550
BASS550 CABINET ASSEMBLY & PACKAGING EXPLODED VIEWS
115 115
BL-1733
INW
OOD
,N
.Y.1
109
6
INWOOD
,N.
Y.11096
SIG
NAL
TRA
NSFO
RME
R
SIGNAL
TRANSFORMER
24 24
12 12
24 24
48 48
0
0
0
12
12
13
13
14
14
6
6
7
7
8
8
9
9
10
10
11
11
6
Bass550
Amplifier
Exploded
V
iew
Bass550
Ref # Part No. Description
Qty.
1
BR1187
Alum. Bar 4.8x12.7x40mm
4
2
BR1386
Transistor Bar TO-218
2
3
BR1395
Bracket Power Support
6
4
BR1411
Bracket Support 60 Deg
1
5
BR1421
Bracket "L" 0.9"x0.9"
1
6
BR1423
Front Plate
1
7
BR1495
Alum. Bar
1
8
FS1078
Fuse 6A 250V 3AG Slow Blow
1
B
C
D
A
E
F
G
H
I
1
1
2
2
3
3
4
4
5
5
Powered
Subwoofer
B
C
D
A
E
F
G
H
I
Ref # Part No. Description
Qty.
9
FH1002
Fuse Holder 1/4x1-1/4
1
10
XX1174
1
WI1597
11
HS1142
1
12
MI1151
AG Power Transformer 120v
1
M1159
13
ST1025
Round Spacer 1/2x3/8 length
6
14
SW1075
JR Switch Rocker 2P2T Snap-I
1
15
XX1259
Knob Black (not shown)
1
16
XX1269
Gasket
1
17
XX1276
Plastic Cover
1
18
NU1059
Nut 4-40 Keps-Thr. Hexag. Zinc
2
19
NU1057
Nut 6-32 Keps Zinc Hexag.
2
20
NU1049
Nut 8-32x1/4 Keps Hexag.
5
21
WA1049
Washer Ext. Tooth #6 Zinc
10
22
WA1080
Washer Flat #8 Steel Zinc
5
23
XX1250
Strain Relief SPT-1 Black
1
24
SC1253
Screw 4-40x3/8 Pan Phillips
2
25
SC1274
Screw 5-20x1/4 Thread Form. Z.
6
26
SC1192
Screw 6-32x3/4 Cutt-Thr. Hex.
8
27
SC1194
Screw 6-32x3/8 Tapt-Thr Hex.
17
28
SC1282
Screw 10-32x7/8 Pan-Torx Hd.
6
29
SP1073
Sil Pad TO-3P 1/0"x0.75"
12
30
SP1072
Sil Pad TO-220 0.750"
3
31
ST1024
1/4 Hex Fem. Standoff 1-1
2
32
Pin Interconnect Cable
1
AG AC Cord 6ft. UL/CSA aprov. 120v
332630-001
13
AG AC Cord 6ft. UL/CSA aprov. 230v
1
AG Power Transformer 230v
1
25
17
16
23
10
9
14
28
26
13
4
11
12
20
22
31
26
1
2
30
3
29
21
7
27
19
5
18
6
24
6x
6x
6x
2x
2x
2x
8
6x
5x
5x
2x
8x
4x
2x
3x
6x
12x
10x
17x
Preamp & Crossover PCB
Power Supply PCB
Power Amp Subwoofer
PCB 1166
Power Amp PCB 1165
Bass550 Amplifier
Exploded View
Exploded View
32
115
115
BL-1733
INWO
OD,
N.Y.
1109
6
INWOOD
,N.
Y.11096
SIG
NAL
TRA
NSFO
RME
R
SIGNAL
TRANSFORMER
24 24
12 12
24 24
48 48
0
0
0
6
6
7
7
8
8
9
9
Bass550
Amplifier
Exploded
V
ie
w
1
1
2
2
3
3
4
4
5
5
Powered
Subwoofer
B
C
D
A
E
F
G
H
I
Ref # Part No
Description
Qty
25
17
16
4
11
12
20
22
31
26
1
2
30
3
29
21
7
27
19
5
18
2x
2x
6x
5x
5x
2x
8x
4x
2x
3x
6x
12x
10x
17x
Preamp & Crossover PCB
Power Supply PCB
Power Amp Subwoofer
PCB 1166
Power Amp PCB 1165
Bass550 Amplifier
Exploded View
Exploded View
32
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