JBL BASS550 User manual

SERVICE MANUAL
SERVICE MANUAL
Powered Subwoofer
JBL Consumer Products Inc.
80 Crossways Park West
Woodbury, N.Y. 11797
1 800 336 4JBL in the USA
A Harman International Company
Part No.: 1112 JBLBASS550
BASS550
120 Volt & 230 Volt Versions

1
Powered Subwoofer BASS550
TABLE OF CONTENTS
Specifications .................................................................1
Features..........................................................................2
Powered Sub Test Setup...............................................2
Test Procedure...............................................................2
Block Diagram ................................................................4
Cabinet Assembl Exploded View.................................5
Packaging Exploded View .............................................5
Amplifier Exploded View ................................................6
Parts Lists.......................................................................7
Revisions ......................................................................10
Printed Circuit Boards .................................................11
Integrated Circuit Diagrams .........................................15
Schematic Diagrams ...................................................16
SPECIFICATIONS
Amplifier Power (RMS)* ........250Watts Total
35x3@0.1% THD
23x1@0.1% THD
100x1@0.1% THD
Low Frequenc Woofer (2) .......SE6H 6-1/2" Pol -Cone Woofer
Design ..............Bass Reflex Enclosure
Inputs ..............RCAPhono plugs at “Source”;
13 pin Din plug to Subwoofer
Outputs .............(4)Full range Speaker;
(1) Subwoofer
Crossover Frequenc Subwoofer (-6dB) . . . 150Hz
Frequenc Response (-6dB)
S stem .............35Hz - 20kHz
Subwoofer ............35Hz - 150Hz
External Dimensions
Height .............15-3/4" (400mm)
Width .............8-1/2" (216mm)
Depth .............20"(508mm)
Weight ..............40lbs. (18.2 kg)
JBL continuall strives to improve its products. New materials, production methods and design refinements are introduced into
existing models without notice as a routine expression of our design philosoph . For this reason, the Bass550 Subwoofer ma
differ in some respect from its published specifications and descriptions, but will alwa s equal or exceed the original
specifications unless otherwise stated.

2
Powered Subwoofer BASS550
FEATURES
nThe Bass550 powered subwoofer is part of the ESC550
S stem.
nAmplifiers for five satellite speakers and subwoofer.
n100 watt output.
nVariable level control.
nLine level input exclusivel from the “Source”.
nUser friendl “auto on” circuit. Signal sensing
automaticall turns the subwoofer on so ou don't have
to; the subwoofer is meant to be left “on” without
continuall using the power switch.
TEST PROCEDURE
Equipment nee e :
nThe “Source” AM/FM turner/CD pla er w/ remote control.
nFunction/signal generator/sweep generator.
nMultimeter.
nCable - Phono plugs (RCA) and speaker cables.
nRCA Y-cable
Subwoofer, General Function
1) Connect both right and left phono jack (RCA) inputs
to signal generator and the “Source” Tape/Aux. input
jacks. Use Y-cable if necessar from mono source.
2) Connect Bass550 subwoofer to the “Source” with
supplied 13 pin Din cable.
BASS550 POWERED SUBWOOFER TEST SETUP

3
Powered Subwoofer BASS550
3) Plug in subwoofer, turn power switch on; red LED
should light.
4) Turn on generator, adjust to 100 mV, 50 Hz.
5) Push “power” button on the “Source”, (displa should
now be active); press “Tape/Aux” button, adjust
volume (on Source) so displa reads “VOLUME 30”.
6) Turn up level control on subwoofer full clockwise.
7) LED on subwoofer should c cle to green; bass
response should be heard and felt from port tube
opening.
Subwoofer, Sweep Function
1) Follow steps 1-7 above, using a sweep generator as a
signal source.
2) Sweep generator from 20Hz to 300Hz. Listen to the
cabinet and drivers for an rattles, clicks, buzzes or
an other noises. If an unusual noises are heard,
remove driver and test.
Subwoofer, Driver Function
1) Remove one or both drivers from cabinet; remove +
and - wire clips.
2) Check DC resistance of driver; it should be
approximatel 5.8 ohms.
3) Connect a pair of speaker cables to driver terminals.
Cables should be connected to an integrated amplifier
fed b a signal generator. Turn on generator and
adjust so that speaker level output is 4.0V.
4) Sweep generator from 20Hz to 1kHz. Listen to driver
for an rubbing, buzzing, or other unusual noises.
System, General Function
1) Connect Bass550 subwoofer to the “Source” with
supplied 13 pin Din cable.
2) Attach all five satellite speakers to the supplied
speaker cables, terminating in a molex connector
plugged into the subwoofer.
3) Plug in Bass550 subwoofer, turn power switch on; red
LED should light.
4) Push “power” button on the “Source”; (displa should
now be active).
5) Toggle “surround mode” button on front panel or with
remote control until “NORMAL” appears.
6) Toggle “rear speaker”button on front panel until
“REAR SPEAKERS” is displa ed in upper left corner.
7) Adjust volume (on Source) so displa reads
“VOLUME 30”.
8) Using remote control, press “TONE” button.
9) White noise should be heard, c cling from Left,
Center, Right and Rear speakers in succession.
10)Press “TONE” button again to halt test.

4
Powered Subwoofer BASS550
BASS550 (120v US & 230v European Versions) BLOCK DIA RAM

5
Powered Subwoofer BASS550
BASS550 CABINET ASSEMBLY & PACKAGING EXPLODED VIEWS

115
115
BL-1733
INWOOD,N.Y
.11096
INWOOD,N.Y. 11096
SIGNALTRANSFORMER
SIGNAL TRANSFORMER
24
24
12
12
24
24
48
48
00
0
12 12
13 13
14 14
66
77
88
99
10 10
11 11
6
Bass550 Amplifier Exploded View
Bass550
Ref # Part No. Description Qty.
1 BR1187 Alum. Bar 4.8x12.7x40mm 4
2 BR1386 Transistor Bar TO-218 2
3 BR1395 Bracket ower Support 6
4 BR1411 Bracket Support 60 Deg 1
5 BR1421 Bracket "L" 0.9"x0.9" 1
6 BR1423 Front late 1
7 BR1495 Alum. Bar 1
8 FS1078 Fuse 6A 250V 3AG Slow Blow 1
BCDAEFGHI
11
22
33
44
55
Powered Subwoofer
BCDAEFGHI
Ref # Part No. Description Qty.
9 FH1002 Fuse Holder 1/4x1-1/4 1
10 XX1174 1
WI1597
11 HS1142 Heatsink Internal 1
12 MI1151 AG ower Transformer 120v 1
M1159
13 ST1025 Round Spacer 1/2x3/8 length 6
14 SW1075 JR Switch Rocker 2 2T Snap-I 1
15 XX1259 Knob Black (not shown) 1
16 XX1269 Gasket 1
17 XX1276 lastic 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 S T-1 Black 1
24 SC1253 Screw 4-40x3/8 an hillips 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 an-Torx Hd. 6
29 S 1073 Sil ad TO-3 1/0"x0.75" 12
30 S 1072 Sil ad TO-220 0.750" 3
31 ST1024 1/4 Hex Fem. Standoff 1-1 2
32 in Interconnect Cable 1
AG AC Cord 6ft. UL/CSA aprov. 120v
332630-001 13
AG AC Cord 6ft. UL/CSA aprov. 230v 1
AG ower 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
reamp & Crossover CB
ower Supply CB
ower Amp Subwoofer
CB 1166
ower Amp CB 1165
Bass550 Amplifier
Exploded View
32

115
115
BL-1733
INWOOD,N
.Y.11096
INWOOD,N.Y. 11096
SIGNALTRANSFORMER
SIGNAL TRANSFORMER
24
24
12
12
24
24
48
48
00
0
66
77
88
99
Bass550 Amplifier Exploded Vie
w
11
22
33
44
55
Powered Subwoofer
BCDAEFGHI
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 Supp y PCB
Power Amp Subwoofer
PCB 1166
Power Amp PCB 1165
Bass550 Amplifier
Exploded View
32

12 12
13 13
14 14
66
77
88
99
10 10
11 11
6
B
ass550 Amplifier Exploded View
Bass550
Ref # Part No. Description Qty.
1 BR1187 A um. 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 P ate 1
7 BR1495 A um. Bar 1
8 FS1078 Fuse 6A 250V 3AG S ow B ow 1
BCDAEFGHI
Ref # Part No. Description Qty.
9 FH1002 Fuse Ho der 1/4x1-1/4 1
10 XX1174 1
WI1597
11 HS1142 Heatsink Interna 1
12 MI1151 AG Power Transformer 120v 1
M1159
13 ST1025 Round Spacer 1/2x3/8 ength 6
14 SW1075 JR Switch Rocker 2P2T Snap-I 1
15 XX1259 Knob B ack (not shown) 1
16 XX1269 Gasket 1
17 XX1276 P astic 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 F at #8 Stee Zinc 5
23 XX1250 Strain Re ief SPT-1 B ack 1
24 SC1253 Screw 4-40x3/8 Pan Phi ips 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 Si Pad TO-3P 1/0"x0.75" 12
30 SP1072 Si Pad TO-220 0.750" 3
31 ST1024 1/4 Hex Fem. Standoff 1-1 2
32 Pin Interconnect Cab e 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
19
5
18
6
24
6x
6x
6x
2x
2x
2x
8
6x
Preamp & Crossover PCB

7
Powered Subwoofer BASS550
REF. NO. PART NO. DESCRIPTION QTY
Power Supply PCB 1163
Connector
CONN1 CO1335 CONNECTOR 6410 SERIES 6 T 1
-V, +V CO1347 CONNECTOR 41791 SERIES 3 2
GND CO1348 CONNECTOR 41791 SERIES 4 1
+, 1, CT(5), GND TE1175 TERMINAL MALE TAB 0 032"x0 25 4
AC(7), AC(9), TE1185 TERMINAL MALE TYPE QUICK-FIT 3
CT(8)
Capacitor
C1-4 CP1545 ALUM EL 4700uF 20% 50V 4
C5, 6, 11, 12, CP1426 SMD 0 1uF 20% 50V Z5U 12
15, 16, 19,
20, 21, 22,
23, 24
C7 CP1552 SMD 0 1uF 20% 100V Z5U 1
C8 CP1520 SMD 0 01uF 10% 50V T/R 1
C9, 10 CP1624 ALUM EL 2200uF 20% 35V 2
C13, 14, 25 CP1417 ALUM EL 22uF 20% 16V T/R 3
C17, 18 CP1424 ALUM EL 10uF 20% 16V T/R 2
C26, 27 CP1690 0 01uF 100V 2
Diodes DI1185 Main Diode Bridge 1
D1-5 DI1010 1N4002 1A/100V AXIAL 5
D6-10 DI1132 SMD 1N4148 LL-34 PKG T/R 5
ZD1 DI1129 MBZ5240B 10V ZENER 1
Fu e
F1 (120V Version) FS1078 FUSE 6A 250V 3AG SLOW BLOW 1
F1 (230V Version) FS1078 FUSE 3 15A 250V 3AG SLOW BLOW 1
F3, 4, 5 FS1055 FUSE FAST 3A/125V PICO T/R 3
F6, 7(230V Version) FS1055 FUSE FAST 3A/125V PICO 2
Integrated Circuit
IC1 IC1048 VOLTAGE REG +12V TO-220 1
IC2 IC1110 VOLTAGE REG -12V TO-220 1
IC3 IC1258 VOLTAGE REG +9V TO-220 1
Re i tor
R1, 5 RS1725 SMD 15KΩ5% 1/8W 2
R3 RS1701 SMD 10KΩ5% 1/8W 1
R4 RS1702 SMD 100KΩ5% 1/8W 1
R6 RS1703 SMD 2 2KΩ5% 1/8W 1
R7 RS1700 SMD 1KΩ5% 1/8W 2
R8 RS1706 SMD 47KΩ5% 1/8W 1
Tran i tor
Q1 TR1108 SMD NPN 2SC2412J 1
Q2 TR1125 SMD PNP 2SA1037K 1
Wire
JW1, 2, 4, WI1553 WIRE #22 BARE SOLID TINNED 6
8, 12, 13 1 FOOT
Cro over & Preamp PCB 1164
Connector
CONN1 CO1335 CONNECTOR 6410 SERIES 6 T 1
CONN2, 3, 4 CO1336 CONNECTOR 6410 SERIES 5 3
CONN5 CO1341 RIGHT ANGLE WITH PEGS 5569 1
REF. NO. PART NO. DESCRIPTION QTY
CONN6 CO1339 STR SQ 0 156" CENTER HE 1
DIN CO1337 CONNECTOR MULTI-POLE NON 1
Capacitor
C1, 1A, 1B, CP1415 ALUM EL 2 2uF 20% 4
1C
C2, 2A, 2B, 2C CP1473 SMD 220pF 10% 50V NPO 4
C3, 3A, 3B, CP1352 ALUM EL 22uF 20% 25V 6
3C, 16, 17
C4, 4A, 4B, CP1344 POLY FIL 0 33uF 10% 4
4C
C5, 5A, 5B, 5C CP1632 POLY FILM 0 033uF 5% 4
C8 CP1412 ALUM EL 47uF 20% 16V 1
C9, 11, 12 CP1495 POLY FILM 0 1uF 5% 63 3
C10 CP1534 POLY FILM 15nF 5% 63V 1
C14, 14A, 14B, CP1426 SMD 0 1uF 20% 50V Z5U 12
14C, 15, C15A,
15B, 15C, 18,
19, C20, 21
C22-25 CP1442 SMD 4 7nF 10% 100V 4
Diode
D1, 2, 3 DI1132 SMD DIODE 1N4148 LL-34 PKG 3
Intergrated Circuit
IC1, 2, 3, 4 IC1041 NJM072 DUAL J-FET OP-AMP 4
IC5 IC1162 NMJ074 QUAD J-FET OP-AMP 1
Re i tor
J1-10, 12-15, RS1779 SMD ZERO ΩJUMPER 19
18, 23, 26,
27, 32
P1 RS1794 POT 50KΩ20% LOG TAPER 1
R1, 1A-1C, 22, RS1700 SMD 1KΩ5% 1/8W 8
24, 29, 32
R2, 2A, 2B, 2C RS1706 SMD 47KΩ5% 1/8W 4
R3, 3A-3C, RS1705 SMD 4 7KΩ5% 1/8W 6
9, 26
R4, 4A-4C, 7, RS1701 SMD 10KΩ5% 1/8W 13
10, 15-17,
R21, 23, 25,
28
R5, 5A, 5C RS2282 SMD 4 32KΩ1% 1/8W 3
R5B RS1876 SMD 7 5KΩ1% 1/8W 1
R6, 6A, 6C RS2281 SMD 24 3KΩ1% 1/8W 3
R6B RS1934 SMD 15KΩ1% 1/8W 1
R8, 19 RS1767 SMD 1MΩ5% 1/8W 2
R11 RS2165 SMD 28KΩ1% 1/8W 1
R12 RS2162 F/CHIP 60 40KΩ1% 1/8W 1
R13 RS1863 SMD 9 09KΩ1% 1/8W 1
R14 RS2163 SMD 143 KΩ1% 1/8W 1
R18 RS1702 SMD 100KΩ5% 1/8W 1
R20 RS1883 SMD 1 5KΩ5% 1/8W 1
R30 RS1703 SMD 2 2KΩ5% 1/8W 1
R31 RS1711 SMD 220Ω5% 1/8W 1
R33, 35, 36 RS1872 SMD 51KΩ5% 1/8W 3
Tran i tor
Q3, 9, 11 TR1063 NPN MPS2222A TO-92 3
Q4, 5 TR1183 NPN POWER TIP31C 2
Q6, 10 TR1010 PNP MPS2907A TO-92 2
BASS550 ELECTRICAL PARTS LIST

8
Powered Subwoofer BASS550
REF. NO. PART NO. DESCRIPTION QTY
Jumper Wire
JW1-16 WI1553 WIRE #22 BARE SOLID TINNED 16
2 66 FEET TOTAL
LED
LED1 LE1032 LED BICOLOR RED/GREEN 5mm 1
Sub Amp PCB 1166
Connector
CONN CO1336 CONNECTOR 6410 SERIES 5 TERM 1
+V, -V, SPKGND, TE1194 MALE FASTON TAB 0 250x0 0 5
SPK(2)
Capacitor
C1 CP1473 SMD 220pF 10% 50V NPO 1
C2 CP1412 ALUM EL 47uF 20% 16V RAD 1
C3, 5, 6 CP1475 SMD 33pF 5% 50V NPO 3
C4, 100, 200 CP1496 SMD 100pF 10% 50V X7R 3
C7, 8, 13, 14, CP1426 SMD 0 1uF 20% 50V Z5U 7
15, 16, 17
C9-C12 CP1645 ALUM EL 22uF 20% 63V 85 Deg 4
C18 CP1126 POLY FILM 1uF 10% 50V T/R 1
C19 CP1552 SMD 0 1uF 20% 100V Z5U 1
C20, 21, 23 CP1579 ALUM EL 33uF 20% 16V NPE T/R 3
Diode
D1-6 DI1132 SMD 1N4148 LL-34 PKG 6
ZD1, 2 DI1150 SMD ZENER 15V 5% CP PKG 2
Fu e
F1 FS1073 FUSE SLOW BLOW 8A 250V 5x20 1
Integrated Circuit
IC1 IC1175 NE5532 DUAL LOW-N OP-AMP 1
Inductor
L1 (120v Version) MI1100 INDUCTOR AIR CORE 0 38uH 1
L1 (230v Version) MI11000 INDUCTOR AIR CORE 0 40uH 1
Re i tor
J1, 2, 3, 4, RS1779 SMD ZERO ΩJUMPER 11
5, 7, 8, 9
10, 11, 15
P1 RS1794 50K POTENTIOMETER 1
R1, 2, 4, 19, RS1701 SMD 10KΩ5% 1/8W 10
20, 29, 30,
41, 43, 45
R3 RS1700 SMD 1KΩ5% 1/8W 120 1
R5, 8 RS1725 SMD 15KΩ5% 1/8W 2
R6, 7, 16, 38 RS1831 SMD 7 5KΩ5% 1/8W T/R 4
R9, 13 RS1722 SMD 470Ω5% 1/8W 2
R10, 12, 15, RS1717 SMD 100Ω5% 1/8W 5
18, 48
R11 RS1703 SMD 2 2KΩ5% 1/8W 1
R14 RS1704 SMD 22KΩ5% 1/8W 1
R17 RS1871 SMD 5 1KΩ5% 1/8W 1
R21 RS1994 100Ω5% 1/4W C/F T/R 1
R22, 22A, 23, RS1916 C/F 5 1Ω5% 1/4W T/R 4
23A
R24, 24A, 25, RS1868 W/W 0 1Ω5% 5W RADIAL 4
25A
R26, 44 RS1877 SMD 4 3KΩ5% 1/8W 2
R27 RS1724 SMD 6 8KΩ5% 1/8W 1
REF. NO. PART NO. DESCRIPTION QTY
R28 RS1878 SMD 10Ω5% 1/8W 1
R31, 32 RS1715 SMD 5 6KΩ5% 1/8W 2
R33, 34, 35 RS1898 SMD 10KΩ1% 1/8W 3
R36 RS2285 SMD 11 3KΩ1% 1/8W 1
R37, 39, 40 RS1767 SMD 1MΩ5% 1/8W 3
R42, 49, 50 RS1702 SMD 100KΩ5% 1/8W 3
R46, 47 RS2180 M/O 470Ω5% 1W 2
R51 RS1903 SMD 47Ω5% 1/8W 1
Thermi tor
TH1 TH1006 NTC THERM 10KΩ@ 25DegC 1
Tran i tor
Q1, 1A TR1057 NPN POWER TIP35C TO-218 2
Q2, 2A TR1061 PNP POWER TIP36C TO-218 2
Q3 TR1183 NPN POWER TIP31C TO220 1
Q4 TR1184 PNO POWER TIP32C TO220 1
Q5, 8, 13, 15 TR1166 PNP 2N5401 TO-92 T/R 4
Q6, 7, 14 TR1167 NPN 2N5551 TO-92 T/R 3
Q9 TR1043 NPN MPS2222A TO-92 1
Q10, 11 TR1108 SMD NPN 2SC2412K CP PKG 2
Q12 TR1131 SMD NPN DTC1124TK 10K CP 1
Mi cellaneou
TRIAC TY1001 TRIAC 200V 25V TO-220 MAC224-4 1
JW1, 4, 5 WI1553 WIRE #22 BARE SOLID TINNED 3
0 5 FOOT
JW2, 3 WI1623 WIRE #16 SOLID UL 1569 GREEN 2
0 166 FOOT
F1 XX1297 FUSE CLIP 5x20 PC MOUNT 2
Surround & Center Power Amp 1165
Connector
CONN CO1336 CONNECTOR 6410 SERIES 5 TERM 1
+V, -V, SPK(R-L) TE1194 MALE FASTON TAB 0 250x0 032 4
Capacitor
C1, 1A CP1473 SMD 220pF 10% 50V NPO 2
C2, 2A CP1412 ALUM EL 47uF 20% 16V RAD 2
C3, 3A, 5, 5A
6, 6A CP1475 SMD 33pF 5% 50V NPO 6
C4, 4A, 100, CP1496 SMD 100pF 10% 50V X7T 6
100A, 200,
C200A
C7, 7A, 8, 8A, CP1426 SMD 0 1uF 20% 50V Z5U 10
13, 14, 14A,
C15-17
C9-12 CP1645 ALUM EL 22uF 20% 63V 85Deg 4
C18 CP1126 POLY FILM 1uF 10% 50V T/R 1
C19 CP1552 SMD 0 1uF 20% 100V Z5U 1
Diode
D1, 1A, 2, 2A, DI1132 SMD 1N4148 LL-34 PKG T/R 10
3, 3A, 4, 4A,
5, 6
Z1, 2 DI1150 SMD ZENER 15V 5% CP PKG T/R 2
Integrated Circuit
IC1 IC1175 NE5532 LOW-N OP-AMP 1
IC2 IC1041 NJM072 DUAL J-FET OP-AMP 1
Inductor
L1, 1A (120v) MI1100 AIR CORE 0 38uH 2

9
Powered Subwoofer BASS550
REF. NO. PART NO. DESCRIPTION QTY
L1, 1A (230v) MI11000 INDUCTOR AIR CORE 0 40uH 2
Re i tor
J1-6, 8-15, 17 RS1779 SMD ZERO ΩJUMPER 15
R1, 1A, 2, 2A, RS1701 SMD 10KΩ5% 1/8W 18
4, 4A, 19, 19A,
20, 20A, 29,
29A, 30, 30A,
41, 43, 45, 45A
R3, 3A RS1700 SMD 1KΩ5% 1/8W 2
R5, 5A, 8, 8A RS1725 SMD 15Ω5% 1/8W 4
R6, 6A, 7, 7A, RS1831 SMD 7 5KΩ5% 1/8W T/R 8
16, 16A, 38,
38A
R9, 9A, 13, 13A RS1722 SMD 470Ω5% 1/8W 4
R10, 10A, 12, RS1717 SMD 100Ω5% 1/8W 8
12A, 15, 15A,
18, 18A
R11, 11A RS1703 SMD 2 2KΩ5% 1/8W 2
R14, 14A RS1702 SMD 22KΩ5% 1/8W 2
R17, 17A RS1871 SMD 5 1KΩ5% 1/8W 2
R21, 21A RS1994 100Ω5% 1/4W C/F T/R 2
R22, 22A, 23, RS1916 C/F 5 1Ω5% 1/4W T/R 4
23A
R24, 24A, 25, RS1868 W/W 0 1Ω5% 5W RADIAL 4
25A
R26, 26A, 44, RS1877 SMD 4 3KΩ5% 1/8W 4
44A
R27, 27A RS1724 SMD 6 8KΩ5% 1/8W 2
R28, 28A RS1878 SMD 10Ω5% 1/8W 2
R31, 32 RS1715 SMD 5 6KΩ5% 1/8W 2
R33-35 RS1898 SMD 10KΩ1% 1/8W 3
R36 RS2285 SMD 11KΩ1% 1/8W 1
R37, 39, 40 RS1767 SMD 1MΩ5% 1/8W 3
R42 RS1702 SMD 100KΩ5% 1/8W 1
R46, 47 RS2180 M/O 470Ω5% 1W 2
Thermi tor
TH1 NTC 10KW @ 2 5DegC 1
Tran i tor
Q1, 1A TR1057 NPN POWER TIP35C TO-218 2
Q2, 2A TR1061 PNP POWER TIP36C TO-218 2
Q3, 3A TR1183 NPN POWER TIP31C TO220 2
Q4, 4A TR1184 PNP POWER TIP32C TO220 2
Q5, 5A, 8, 8A, TR1166 PNP 2N5401 TO-92 T/R 7
13, 13A, 15
Q6, 6A, 7, 7A, TR1167 NPN 2N5551 TO-92 T/R 5
14
Q9, 9A TR1043 NPN MPS2222A TO-92 2
Q10, 10A, 11, TR1108 SMD NPN 2SC2412K CP PKG 4
11A
Q12, 12A TR1131 SMD NPN DTC1124TK 10K CP 2
Wire
JW1-5 WI1623 WIRE #16 SOLID UL1569 GREEN 5
0 8 FOOT
JW6, 9, 10, 11 WI1553 WIRE #22 BARE SOLID TINNED 4
0 66 FOOT
REF. NO. PART NO. DESCRIPTION QTY
Left & Right Power Amp 1165
Connector
CONN CO1336 CONNECTOR 6410 SERIES 5 TERM 1
+V, -V, SPK(R-L) TE1194 MALE FASTON TAB 0 250x0 032 4
Capacitor
C1, 1A CP1473 SMD 220pF 10% 50V NPO 2
C2, 2A CP1412 ALUM EL 47uF 20% 16V RADIAL 2
C3, 3A, 5, 5A, CP1475 SMD 33pF 5% 50V NPO 6
6, 6A
C4, 4A, 100, CP1496 SMD 100pF 10% 50v X7R 6
100A, 200,
200A
C7, 7A, 8, 8A, CP1426 SMD 0 1uF 20% 50V Z5U 10
13, 14, 14A,
15, 16, 17
C9-12 CP1645 ALUM EL 22uF 20% 63V 85Deg 4
C18 CP1126 POLY FILM 1uF 10% 50V T/R 1
C19 CP1552 SMD 0 1uF 20% 100V Z5U 1
Diode
D1, 1A, 2, 2A, DI1132 SMD 1N4148 LL-34 PKG T/R 10
3, 3A, 4, 4A,
5, 6
Z1, 2 DI1150 SMD ZENER 15V 5% CP PKG T/R 2
Integrated Circuit
IC1 IC1175 NE5532 DUAL LOW-N OP-AMP 1
IC2 IC1041 NJM072 DUAL J-FET OP-AMP 1
Inductor
L1, 1A (120v) MI1100 AIR CORE 0 38uH 2
L1, 1A (230v) MI11000 INDUCTOR AIR CORE 0 40uH
Re i tor
J1-6, 8-15, 17 RS1779 SMD ZERO ΩJUMPER 15
R1, 1A, 2, 2A, RS1701 SMD 10KΩ5% 1/8W 21
4, 4A, 19, 19A,
20, 20A, 29,
29A, 30, 30A,
33-35, 41, 43,
45, 45A
R3, 3A RS1700 SMD 1KΩ5% 1/8W 2
R5, 5A, 8, 8A RS1725 SMD 15KΩ5% 1/8W 4
R6, 6A, 7, 7A, RS1831 SMD 7 5KΩ5% 1/8 T/R 8
16, 16A, 38,
38A
R9, 9A, 13, 13A RS1722 SMD 470Ω5% 1/8W 4
R10, 10A, 12, RS1717 SMD 100Ω5% 1/8W 8
12A, 15, 15A,
18, 18A
R11, 11A RS1703 SMD 2 2KΩ5% 1/8W 2
R14, 14A RS1704 SMD 22KΩ5% 1/8W 2
R17, 17A RS1871 SMD 5 1KΩ5% 1/8W 2
R21, 21A RS1994 100Ω5% 1/4W C/F T/R 2
R22, 22A, 23, RS1916 C/F 5 1Ω5% 1/4W T/R 4
23A
R24, 24A, 25, RS1868 W/W 0 1Ω5% 5WC RADIAL 4
25A
R26, 26A, 44, RS1877 SMD 4 3KΩ5% 1/8W 4
44A
R27, 27A RS1724 SMD 6 8KΩ5% 1/8W 2
R28, 28A RS1878 SMD 10Ω5% 1/8W 2

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Powered Subwoofer BASS550
REF. NO. PART NO. DESCRIPTION QTY
R31, 32 RS1715 SMD 5 6KΩ5% 1/8W 2
R36 RS1912 SMD 11 3KΩ5% 1/8W 1
R37, 39, 40 RS1767 SMD 1MΩ5% 1/8W 3
R42 RS1702 SMD 100KΩ1% 1/8W 1
R46, 47 RS2180 M/O 470Ω5% 1W 2
Thermi tor
TH1 TH1006 NTC 10KW @ 2 5DegC 1
Tran i tor
Q1, 1A TR1057 NPN POWER TIP35CTO-218 2
Q2, 2A TR1061 PNP POWER TIP36 TO-218 2
Q3, 3A TR1183 NPN POWER TIP31 TO220 2
Q4, 4A TR1184 PNP POWER TIP32 TO220 2
Q5, 5A, 8, 8A, TR1166 PNP 2N5401 TO-92 T/R 7
13, 13A, 15
Q6, 6A, 7, 7A, TR1167 NPN 2N5551 TO-92 T/R 5
14
Q9, 95 TR1063 NPN MPS2222A TO-92 2
Q10, 10A, 11, TR1108 SMD NPN 2SC2412K CP PKG 4
11A
Q12, 12A TR1131 SMD NPN DTC1124TK 10K CP 2
Wire
JW1-5 WI1623 #16 SOLID UL1569 GREEN 8
JW6, 9, 10, 11 WI1553 #22 BARE SOLID TINNED 4
0 66 FOOT
Mi cellaneou (See Exploded View)
1 BR1187 Alum Bar 4 8x12 7x40mm 4
2 BR1386 Transistor Bar TO-218 2
3 BR1395 Bracket Power Support 6
REF. NO. PART NO. DESCRIPTION QTY
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 SEE FUSES
9 FH1002 Fuse Holder 1/4x1-1/4 1
10 XX1174 AG AC Cord 6ft UL/CSA aprov 120V 1
WI1597 AG AC Cord 6ft UL/CSA aprov 230V
11 HS1142 Heatsink Internal 1
12 MI1151 AG Power Transformer 120V 1
m1159 AG Power Transformer 230V 1
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 332630-001 13 Pin Interconnect Cable 1
Revisions
Date Revision Change Description Reason of Change
1/29/97 01 A) Changed R6, A, C from 27K to 24.3K 1% on PCB1164.
B) Changed R6B from 27K to 15K on PCB1164.
C) Changed R5, A, C from 2.7K to 4.32K 1% on PCB1164.
) Changed R5B from 2.7K to 7.5K on PCb1164.
Changes required by Engineering
2/5/97 02 A) Changed R33, R34, R35 from 10K 5% to 10K 1% on (2)
PCB1165 & PCB1166.
B) Changed R36 from 11K 5% to 11.3K 1% on (2) PCB1165
& PCB1166.
Changes required by Engineering
3/3/97 03 A) Identified Polarity Power Cord.
3/11/97 04 A) Changed R7 from 4.7K to 10K on PCB1164.
B) Changed R26 from 10K to 4.7K on PCB1164.
C) Changed R30 from 1K to 2.2K on PCB1164.
) Changed R31 from 470 to 220 on PCB1164.
E) elete JW9, JW10, JW11 on PCB1163.
F) Add F3, F4, F5 on JW9, JW10, JW11 on PCB1163.
G) Changed R1 from 1K to 15K on PCB1163.
H) elete R2 and Add Z 1, 10V in the same place on PC1163.
I) Add C26, C27 of 0.01µF 100V on PCB1163.
J) Add C22, C23, C24, C25 from 4700ρF on PCB1164
(Speaker Out).
A, B, C, = Power On Sensitivity.
E, F = Protection On Voltage.
G, H = POP On Power Off.

10
Revisions
Date Revision Change Description Reason of Change
1/29/97 01 A) Changed R6, A, C from 27K to 24.3K 1% on PCB1164.
B) Changed R6B from 27K to 15K on PCB1164.
C) Changed R5, A, C from 2.7K to 4.32K 1% on PCB1164.
) Changed R5B from 2.7K to 7.5K on PCb1164.
Changes required by Engineering
2/5/97 02 A) Changed R33, R34, R35 from 10K 5% to 10K 1% on (2)
PCB1165 & PCB1166.
B) Changed R36 from 11K 5% to 11.3K 1% on (2) PCB1165
& PCB1166.
Changes required by Engineering
3/3/97 03 A) Identified Polarity Power Cord.
3/11/97 04 A) Changed R7 from 4.7K to 10K on PCB1164.
B) Changed R26 from 10K to 4.7K on PCB1164.
C) Changed R30 from 1K to 2.2K on PCB1164.
) Changed R31 from 470 to 220 on PCB1164.
E) elete JW9, JW10, JW11 on PCB1163.
F) Add F3, F4, F5 on JW9, JW10, JW11 on PCB1163.
G) Changed R1 from 1K to 15K on PCB1163.
H) elete R2 and Add Z 1, 10V in the same place on PC1163.
I) Add C26, C27 of 0.01µF 100V on PCB1163.
J) Add C22, C23, C24, C25 from 4700ρF on PCB1164
(Speaker Out).
A, B, C, = Power On Sensitivity.
E,F=Protection On Voltage.
G, H = POP On Power Off.

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Powered Subwoofer BASS550
PRINTED CIRCUIT BOARDS 1 (TOP VIEW)

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Powered Subwoofer BASS550
PRINTED CIRCUIT BOARDS 1 (BOTTOM VIEW)

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Powered Subwoofer BASS550
PRINTED CIRCUIT BOARDS 2 (TOP VIEW)

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Powered Subwoofer BASS550
PRINTED CIRCUIT BOARDS 2 (BOTTOM VIEW)

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Powered Subwoofer BASS550
INTEGRATED CIRCUIT DIAGRAMS

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Powered Subwoofer BASS550
120V CROSSOVER & PREAMP SCHEMATIC DIAGRAM (SHEET 1)