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BASS550
Powered Subwoofer
120 Volt & 230 Volt Versions


SERVICE MANUAL




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
Powered Subwoofer BASS550


TABLE OF CONTENTS
Specifications .................................................................1 Amplifier Exploded View ................................................6
Features..........................................................................2 Parts Lists.......................................................................7
Powered Sub Test Setup...............................................2 Revisions ......................................................................10
Test Procedure...............................................................2 Printed Circuit Boards .................................................11
Block Diagram ................................................................4 Integrated Circuit Diagrams .........................................15
Cabinet Assembly Exploded View.................................5 Schematic Diagrams ...................................................16
Packaging Exploded View .............................................5




SPECIFICATIONS

Amplifier Power (RMS)* . . . . . . . . 250 Watts Total
35 x 3 @ 0.1% THD
23 x 1 @ 0.1% THD
100 x 1 @ 0.1% THD
Low Frequency Woofer (2) . . . . . . . SE6H 6-1/2" Poly-Cone Woofer
Design . . . . . . . . . . . . . . Bass Reflex Enclosure
Inputs . . . . . . . . . . . . . . RCA Phono plugs at "Source";
13 pin Din plug to Subwoofer
Outputs . . . . . . . . . . . . . (4) Full range Speaker;
(1) Subwoofer
Crossover Frequency Subwoofer (-6dB) . . . 150Hz
Frequency Response (-6dB)
System . . . . . . . . . . . . . 35Hz - 20kHz
Subwoofer . . . . . . . . . . . . 35Hz - 150Hz
External Dimensions
Height . . . . . . . . . . . . . 15-3/4" (400mm)
Width . . . . . . . . . . . . . 8-1/2" (216mm)
Depth . . . . . . . . . . . . . 20" (508mm)
Weight . . . . . . . . . . . . . . 40 lbs. (18.2 kg)




JBL continually 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 philosophy. For this reason, the Bass550 Subwoofer may
differ in some respect from its published specifications and descriptions, but will always equal or exceed the original
specifications unless otherwise stated.




1
Powered Subwoofer BASS550
FEATURES

n The Bass550 powered subwoofer is part of the ESC550 n Line level input exclusively from the "Source".
System.
n User friendly "auto on" circuit. Signal sensing
n Amplifiers for five satellite speakers and subwoofer. automatically turns the subwoofer on so you don't have
to; the subwoofer is meant to be left "on" without
n 100 watt output. continually using the power switch.


n Variable level control.




BASS550 POWERED SUBWOOFER TEST SETUP




TEST PROCEDURE
Equipment needed: Subwoofer, General Function
n The "Source" AM/FM turner/CD player w/ remote control. 1) Connect both right and left phono jack (RCA) inputs
n Function/signal generator/sweep generator. to signal generator and the "Source" Tape/Aux. input
jacks. Use Y-cable if necessary from mono source.
n Multimeter.
2) Connect Bass550 subwoofer to the "Source" with
n Cable - Phono plugs (RCA) and speaker cables.
supplied 13 pin Din cable.
n RCA Y-cable



2
Powered Subwoofer BASS550


3) Plug in subwoofer, turn power switch on; red LED System, General Function
should light.
1) Connect Bass550 subwoofer to the "Source" with
4) Turn on generator, adjust to 100 mV, 50 Hz. supplied 13 pin Din cable.

5) Push "power" button on the "Source", (display should 2) Attach all five satellite speakers to the supplied
now be active); press "Tape/Aux" button, adjust speaker cables, terminating in a molex connector
volume (on Source) so display reads "VOLUME 30". plugged into the subwoofer.

6) Turn up level control on subwoofer full clockwise. 3) Plug in Bass550 subwoofer, turn power switch on; red
LED should light.
7) LED on subwoofer should cycle to green; bass
response should be heard and felt from port tube 4) Push "power" button on the "Source"; (display should
opening. now be active).
5) Toggle "surround mode" button on front panel or with
Subwoofer, Sweep Function remote control until "NORMAL" appears.
1) Follow steps 1-7 above, using a sweep generator as a 6) Toggle "rear speaker"button on front panel until
signal source. "REAR SPEAKERS" is displayed in upper left corner.
2) Sweep generator from 20Hz to 300Hz. Listen to the 7) Adjust volume (on Source) so display reads
cabinet and drivers for any rattles, clicks, buzzes or "VOLUME 30".
any other noises. If any unusual noises are heard,
remove driver and test. 8) Using remote control, press "TONE" button.
9) White noise should be heard, cycling from Left,
Subwoofer, Driver Function Center, Right and Rear speakers in succession.
1) Remove one or both drivers from cabinet; remove + 10)Press "TONE" button again to halt test.
and - wire clips.
2) Check DC resistance of driver; it should be
approximately 5.8 ohms.
3) Connect a pair of speaker cables to driver terminals.
Cables should be connected to an integrated amplifier
fed by 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 any rubbing, buzzing, or other unusual noises.




3
Powered Subwoofer BASS550

BASS550 (120v US & 230v European Versions) BLOCK DIAGRAM




4
Powered Subwoofer BASS550
BASS550 CABINET ASSEMBLY & PACKAGING EXPLODED VIEWS




5
Powered Subwoofer
A B C D E F G H I


31 2x
1 1
Bass550 Amplifier 20 5x Power Supply PCB
Exploded View
Power Amp Subwoofer 26 8x
22 5x
PCB 1166
2 2




11
5
BL
21 10x




-1



24
73


SI
G
G
IN
IN
W



N
O



A

12
O



L
3

D,



TR
N.



A
Y.
0




N
11



SF 4

0
09



O 8
6



RM
ER
24
0
27 17x 3 6x 30 3x 7

3 12 29 12x 3




1 4x
4 2 2x 4


11

5 5



32 Power Amp PCB 1165




Bass550 Amplifier Exploded View
6 6


Preamp & Crossover PCB

7 18 2x 7

4

16 19 2x
8 8

5

17 25 6x
9 9
Ref # Part No. Description Qty.
6
9 FH1002 Fuse Holder 1/4x1-1/4 1
10 XX1174 AG AC Cord 6ft. UL/CSA aprov. 120v 1
13 6x WI1597 AG AC Cord 6ft. UL/CSA aprov. 230v 1
10 11 HS1142 Heatsink Internal 1 10
12 MI1151 AG Power Transformer 120v 1
M1159 AG Power Transformer 230v 1
10 23 13 ST1025 Round Spacer 1/2x3/8 length 6
9 14 SW1075 JR Switch Rocker 2P2T Snap-I 1
11 24 2x 26 6x 15 XX1259 Knob Black (not shown) 1
11
16 XX1269 Gasket 1
14 17 XX1276 Plastic Cover 1
8 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
12 28 6x 12
21 WA1049 Washer Ext. Tooth #6 Zinc 10
22 WA1080 Washer Flat #8 Steel Zinc 5
23 XX1250 Strain Relief SPT-1 Black 1
Ref # Part No. Description Qty. 24 SC1253 Screw 4-40x3/8 Pan Phillips 2
1 BR1187 Alum. Bar 4.8x12.7x40mm 4 25 SC1274 Screw 5-20x1/4 Thread Form. Z. 6
13 2 BR1386 Transistor Bar TO-218 2 26 SC1192 Screw 6-32x3/4 Cutt-Thr. Hex. 8 13
3 BR1395 Bracket Power Support 6 27 SC1194 Screw 6-32x3/8 Tapt-Thr Hex. 17
4 BR1411 Bracket Support 60 Deg 1 28 SC1282 Screw 10-32x7/8 Pan-Torx Hd. 6
5 BR1421 Bracket "L" 0.9"x0.9" 1 29 SP1073 Sil Pad TO-3P 1/0"x0.75" 12
6 BR1423 Front Plate 1 30 SP1072 Sil Pad TO-220 0.750" 3
14 7 BR1495 Alum. Bar 1 31 ST1024 1/4 Hex Fem. Standoff 1-1 2 14
Bass550




8 FS1078 Fuse 6A 250V 3AG Slow Blow 1 32 332630-001 13 Pin Interconnect Cable 1
A B C D E F G H I
6
Powered Subwoofer
A B C D E F G H I


31 2x
1 1
Bass550 Amplifier 20 5x Power Supply PCB
Exploded View
Power Amp Subwoofer 26 8x
22 5x
PCB 1166
2 2




11
5
BL
21 10x




-



24
17

SIG
IN
IN
3

W



N
O



A

12
O



L
3

D



TR
,N


A
.Y
0




.1



N
SF
10




0
O
96


RM
R
ER

48
24
2
0
27 17x 3 6x 30 3x 7

3 12 29 12x 3




1 4x
4 2 2x 4


11

5 5



32 Power Amp PCB 1165




Bass550 Amplifier Exploded View
6 6


Preamp & Crossover PCB

7 18 2x 7

4

16 19 2x
8 8

5

17 25 6x
9 9
Bass550 Amplifier Exploded View
6 6


Preamp & Crossover PCB

7 18 2x 7

4

16 19 2x
8 8

5

17 25 6x
9 9
Ref # Part No. Description Qty.
6
9 FH1002 Fuse Holder 1/4x1-1/4 1
10 XX1174 AG AC Cord 6ft. UL/CSA aprov. 120v 1
13 6x WI1597 AG AC Cord 6ft. UL/CSA aprov. 230v 1
10 11 HS1142 Heatsink Internal 1 10
12 MI1151 AG Power Transformer 120v 1
M1159 AG Power Transformer 230v 1
10 23 13 ST1025 Round Spacer 1/2x3/8 length 6
9 14 SW1075 JR Switch Rocker 2P2T Snap-I 1
11 24 2x 26 6x 15 XX1259 Knob Black (not shown) 1
11
16 XX1269 Gasket 1
14 17 XX1276 Plastic Cover 1
8 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
12 28 6x 12
21 WA1049 Washer Ext. Tooth #6 Zinc 10
22 WA1080 Washer Flat #8 Steel Zinc 5
23 XX1250 Strain Relief SPT-1 Black 1
Ref # Part No. Description Qty. 24 SC1253 Screw 4-40x3/8 Pan Phillips 2
1 BR1187 Alum. Bar 4.8x12.7x40mm 4 25 SC1274 Screw 5-20x1/4 Thread Form. Z. 6
13 2 BR1386 Transistor Bar TO-218 2 26 SC1192 Screw 6-32x3/4 Cutt-Thr. Hex. 8 13
3 BR1395 Bracket Power Support 6 27 SC1194 Screw 6-32x3/8 Tapt-Thr Hex. 17
4 BR1411 Bracket Support 60 Deg 1 28 SC1282 Screw 10-32x7/8 Pan-Torx Hd. 6
5 BR1421 Bracket "L" 0.9"x0.9" 1 29 SP1073 Sil Pad TO-3P 1/0"x0.75" 12
6 BR1423 Front Plate 1 30 SP1072 Sil Pad TO-220 0.750" 3
14 7 BR1495 Alum. Bar 1 31 ST1024 1/4 Hex Fem. Standoff 1-1 2 14




Bass550
8 FS1078 Fuse 6A 250V 3AG Slow Blow 1 32 332630-001 13 Pin Interconnect Cable 1
A B C D E F G H I
6
Powered Subwoofer BASS550
BASS550 ELECTRICAL PARTS LIST
REF. NO. PART NO. DESCRIPTION QTY REF. NO. PART NO. DESCRIPTION QTY
CONN6 CO1339 STR. SQ. 0.156" CENTER HE 1
Power Supply PCB 1163 DIN CO1337 CONNECTOR MULTI-POLE NON 1

Connectors Capacitors
CONN1 CO1335 CONNECTOR 6410 SERIES 6 T 1 C1, 1A, 1B, CP1415 ALUM EL. 2.2uF 20% 4
-V, +V CO1347 CONNECTOR 41791 SERIES 3 2 1C
GND CO1348 CONNECTOR 41791 SERIES 4 1 C2, 2A, 2B, 2C CP1473 SMD 220pF 10% 50V NPO 4
+, 1, CT(5), GND TE1175 TERMINAL MALE TAB. 0.032"x0.25 4 C3, 3A, 3B, CP1352 ALUM EL. 22uF 20% 25V 6
3C, 16, 17
AC(7), AC(9), TE1185 TERMINAL MALE TYPE QUICK-FIT 3
CT(8) C4, 4A, 4B, CP1344 POLY FIL 0.33uF 10% 4
4C
Capacitors C5, 5A, 5B, 5C CP1632 POLY FILM 0.033uF 5% 4
C1-4 CP1545 ALUM EL. 4700uF 20% 50V 4 C8 CP1412 ALUM EL. 47uF 20% 16V 1
C5, 6, 11, 12, CP1426 SMD 0.1uF 20% 50V Z5U 12 C9, 11, 12 CP1495 POLY FILM 0.1uF 5% 63 3
15, 16, 19, C10 CP1534 POLY FILM 15nF 5% 63V 1
20, 21, 22,
23, 24 C14, 14A, 14B, CP1426 SMD 0.1uF 20% 50V Z5U 12
14C, 15, C15A,
C7 CP1552 SMD 0.1uF 20% 100V Z5U 1 15B, 15C, 18,
C8 CP1520 SMD 0.01uF 10% 50V T/R 1 19, C20, 21
C9, 10 CP1624 ALUM EL. 2200uF 20% 35V 2 C22-25 CP1442 SMD 4.7nF 10% 100V 4
C13, 14, 25 CP1417 ALUM EL. 22uF 20% 16V T/R 3
Diode
C17, 18 CP1424 ALUM EL. 10uF 20% 16V T/R 2
D1, 2, 3 DI1132 SMD DIODE 1N4148 LL-34 PKG 3
C26, 27 CP1690 0.01uF 100V 2
Intergrated Circuits
Diodes DI1185 Main Diode Bridge 1
IC1, 2, 3, 4 IC1041 NJM072 DUAL J-FET OP-AMP 4
D1-5 DI1010 1N4002 1A/100V AXIAL 5
IC5 IC1162 NMJ074 QUAD J-FET OP-AMP 1
D6-10 DI1132 SMD 1N4148 LL-34 PKG T/R 5
ZD1 DI1129 MBZ5240B 10V ZENER 1 Resistors
J1-10, 12-15, RS1779 SMD ZERO JUMPER 19
Fuses 18, 23, 26,
F1 (120V Version) FS1078 FUSE 6A 250V 3AG SLOW BLOW 1 27, 32
F1 (230V Version) FS1078 FUSE 3.15A 250V 3AG SLOW BLOW 1 P1 RS1794 POT 50K 20% LOG TAPER 1
F3, 4, 5 FS1055 FUSE FAST 3A/125V PICO T/R 3 R1, 1A-1C, 22, RS1700 SMD 1K 5% 1/8W 8
F6, 7(230V Version) FS1055 FUSE FAST 3A/125V PICO 2 24, 29, 32
R2, 2A, 2B, 2C RS1706 SMD 47K 5% 1/8W 4
Integrated Circuits R3, 3A-3C, RS1705 SMD 4.7K 5% 1/8W 6
IC1 IC1048 VOLTAGE REG. +12V TO-220 1 9, 26
IC2 IC1110 VOLTAGE REG. -12V TO-220 1 R4, 4A-4C, 7, RS1701 SMD 10K 5% 1/8W 13
10, 15-17,
IC3 IC1258 VOLTAGE REG. +9V TO-220 1 R21, 23, 25,
28
Resistors R5, 5A, 5C RS2282 SMD 4.32K 1% 1/8W 3
R1, 5 RS1725 SMD 15K 5% 1/8W 2
R5B RS1876 SMD 7.5K 1% 1/8W 1
R3 RS1701 SMD 10K 5% 1/8W 1
R6, 6A, 6C RS2281 SMD 24.3K 1% 1/8W 3
R4 RS1702 SMD 100K 5% 1/8W 1
R6B RS1934 SMD 15K 1% 1/8W 1
R6 RS1703 SMD 2.2K 5% 1/8W 1
R8, 19 RS1767 SMD 1M 5% 1/8W 2
R7 RS1700 SMD 1K 5% 1/8W 2
R11 RS2165 SMD 28K 1% 1/8W 1
R8 RS1706 SMD 47K 5% 1/8W 1
R12 RS2162 F/CHIP 60.40K 1% 1/8W 1
Transistors R13 RS1863 SMD 9.09K 1% 1/8W 1
Q1 TR1108 SMD NPN 2SC2412J 1 R14 RS2163 SMD 143 K 1% 1/8W 1
Q2 TR1125 SMD PNP 2SA1037K 1 R18 RS1702 SMD 100K 5% 1/8W 1
R20 RS1883 SMD 1.5K 5% 1/8W 1
Wire R30 RS1703 SMD 2.2K 5% 1/8W 1
JW1, 2, 4, WI1553 WIRE #22 BARE SOLID TINNED 6 R31 RS1711 SMD 220 5% 1/8W 1
8, 12, 13 1 FOOT
R33, 35, 36 RS1872 SMD 51K 5% 1/8W 3

Crossover & Preamp PCB 1164 Transistor
Q3, 9, 11 TR1063 NPN MPS2222A TO-92 3
Connectors
CONN1 CO1335 CONNECTOR 6410 SERIES 6 T 1 Q4, 5 TR1183 NPN POWER TIP31C 2
CONN2, 3, 4 CO1336 CONNECTOR 6410 SERIES 5 3 Q6, 10 TR1010 PNP MPS2907A TO-92 2
CONN5 CO1341 RIGHT ANGLE WITH PEGS 5569 1




7
Powered Subwoofer BASS550
REF. NO. PART NO. DESCRIPTION QTY REF. NO. PART NO. DESCRIPTION QTY
R28 RS1878 SMD 10 5% 1/8W 1
Jumper Wires
R31, 32 RS1715 SMD 5.6K 5% 1/8W 2
JW1-16 WI1553 WIRE #22 BARE SOLID TINNED 16
2.66 FEET TOTAL R33, 34, 35 RS1898 SMD 10K 1% 1/8W 3
R36 RS2285 SMD 11.3K 1% 1/8W 1
LED R37, 39, 40 RS1767 SMD 1M 5% 1/8W 3
LED1 LE1032 LED BICOLOR RED/GREEN 5mm 1 R42, 49, 50 RS1702 SMD 100K 5% 1/8W 3
R46, 47 RS2180 M/O 470 5% 1W 2
Sub Amp PCB 1166 R51 RS1903 SMD 47 5% 1/8W 1
Connectors Thermistor
CONN CO1336 CONNECTOR 6410 SERIES 5 TERM. 1
TH1 TH1006 NTC THERM. 10K @ 25DegC 1
+V, -V, SPKGND, TE1194 MALE FASTON TAB 0.250x0.0 5
SPK(2) Transistors
Q1, 1A TR1057 NPN POWER TIP35C TO-218 2
Capacitors
C1 CP1473 SMD 220pF 10% 50V NPO 1 Q2, 2A TR1061 PNP POWER TIP36C TO-218 2
C2 CP1412 ALUM EL. 47uF 20% 16V RAD. 1 Q3 TR1183 NPN POWER TIP31C TO220 1
C3, 5, 6 CP1475 SMD 33pF 5% 50V NPO 3 Q4 TR1184 PNO POWER TIP32C TO220 1
C4, 100, 200 CP1496 SMD 100pF 10% 50V X7R 3 Q5, 8, 13, 15 TR1166 PNP 2N5401 TO-92 T/R 4
C7, 8, 13, 14, CP1426 SMD 0.1uF 20% 50V Z5U 7 Q6, 7, 14 TR1167 NPN 2N5551 TO-92 T/R 3
15, 16, 17 Q9 TR1043 NPN MPS2222A TO-92 1
C9-C12 CP1645 ALUM EL. 22uF 20% 63V 85 Deg 4 Q10, 11 TR1108 SMD NPN 2SC2412K CP PKG 2
C18 CP1126 POLY FILM 1uF 10% 50V T/R 1 Q12 TR1131 SMD NPN DTC1124TK 10K CP 1
C19 CP1552 SMD 0.1uF 20% 100V Z5U 1
C20, 21, 23 CP1579 ALUM EL. 33uF 20% 16V NPE T/R 3
Miscellaneous
TRIAC TY1001 TRIAC 200V 25V TO-220 MAC224-4 1
Diode JW1, 4, 5 WI1553 WIRE #22 BARE SOLID TINNED 3
D1-6 DI1132 SMD 1N4148 LL-34 PKG 6 0.5 FOOT
ZD1, 2 DI1150 SMD ZENER 15V 5% CP PKG 2 JW2, 3 WI1623 WIRE #16 SOLID UL 1569 GREEN 2
0.166 FOOT
Fuse F1 XX1297 FUSE CLIP 5x20 PC MOUNT 2
F1 FS1073 FUSE SLOW BLOW 8A 250V 5x20 1
Surround & Center Power Amp 1165
Integrated Circuits
IC1 IC1175 NE5532 DUAL LOW-N OP-AMP 1 Connectors
CONN CO1336 CONNECTOR 6410 SERIES 5 TERM. 1
Inductor +V, -V, SPK(R-L) TE1194 MALE FASTON TAB. 0.250x0.032 4
L1 (120v Version) MI1100 INDUCTOR AIR CORE 0.38uH 1
L1 (230v Version) MI11000 INDUCTOR AIR CORE 0.40uH 1 Capacitor
C1, 1A CP1473 SMD 220pF 10% 50V NPO 2
Resistors C2, 2A CP1412 ALUM EL. 47uF 20% 16V RAD. 2
J1, 2, 3, 4, RS1779 SMD ZERO JUMPER 11 C3, 3A, 5, 5A
5, 7, 8, 9. 6, 6A CP1475 SMD 33pF 5% 50V NPO 6
10, 11, 15
C4, 4A, 100, CP1496 SMD 100pF 10% 50V X7T 6
P1 RS1794 50K POTENTIOMETER 1 100A, 200,
R1, 2, 4, 19, RS1701 SMD 10K 5% 1/8W 10 C200A
20, 29, 30, C7, 7A, 8, 8A, CP1426 SMD 0.1uF 20% 50V Z5U 10
41, 43, 45 13, 14, 14A,
R3 RS1700 SMD 1K 5% 1/8W 120 1 C15-17
R5, 8 RS1725 SMD 15K 5% 1/8W 2 C9-12 CP1645 ALUM EL. 22uF 20% 63V 85Deg 4
R6, 7, 16, 38 RS1831 SMD 7.5K 5% 1/8W T/R 4 C18 CP1126 POLY FILM 1uF 10% 50V T/R 1
R9, 13 RS1722 SMD 470 5% 1/8W 2 C19 CP1552 SMD 0.1uF 20% 100V Z5U 1
R10, 12, 15, RS1717 SMD 100 5% 1/8W 5
18, 48 Diodes
D1, 1A, 2, 2A, DI1132 SMD 1N4148 LL-34 PKG T/R 10
R11 RS1703 SMD 2.2K 5% 1/8W 1
3, 3A, 4, 4A,
R14 RS1704 SMD 22K 5% 1/8W 1 5, 6
R17 RS1871 SMD 5.1K 5% 1/8W 1 Z1, 2 DI1150 SMD ZENER 15V 5% CP PKG. T/R 2
R21 RS1994 100 5% 1/4W C/F T/R 1
Integrated Circuits
R22, 22A, 23, RS1916 C/F 5.1 5% 1/4W T/R 4
23A IC1 IC1175 NE5532 LOW-N OP-AMP 1
R24, 24A, 25, RS1868 W/W 0.1 5% 5W RADIAL 4 IC2 IC1041 NJM072 DUAL J-FET OP-AMP 1
25A
R26, 44 RS1877 SMD 4.3K 5% 1/8W 2 Inductor
R27 RS1724 SMD 6.8K 5% 1/8W 1 L1, 1A (120v) MI1100 AIR CORE 0.38uH 2




8
Powered Subwoofer BASS550


REF. NO. PART NO. DESCRIPTION QTY REF. NO. PART NO. DESCRIPTION QTY
L1, 1A (230v) MI11000 INDUCTOR AIR CORE 0.40uH 2
Left & Right Power Amp 1165
Resistors
J1-6, 8-15, 17 RS1779 SMD ZERO JUMPER 15 Connectors
R1, 1A, 2, 2A, RS1701 SMD 10K 5% 1/8W 18 CONN CO1336 CONNECTOR 6410 SERIES 5 TERM. 1
4, 4A, 19, 19A, +V, -V, SPK(R-L) TE1194 MALE FASTON TAB 0.250x0.032 4
20, 20A, 29,
29A, 30, 30A,
41, 43, 45, 45A
Capacitors
C1, 1A CP1473 SMD 220pF 10% 50V NPO 2
R3, 3A RS1700 SMD 1K 5% 1/8W 2
C2, 2A CP1412 ALUM EL. 47uF 20% 16V RADIAL 2
R5, 5A, 8, 8A RS1725 SMD 15 5% 1/8W 4
C3, 3A, 5, 5A, CP1475 SMD 33pF 5% 50V NPO 6
R6, 6A, 7, 7A, RS1831 SMD 7.5K 5% 1/8W T/R 8 6, 6A
16, 16A, 38,
38A C4, 4A, 100, CP1496 SMD 100pF 10% 50v X7R 6
100A, 200,
R9, 9A, 13, 13A RS1722 SMD 470 5% 1/8W 4 200A
R10, 10A, 12, RS1717 SMD 100 5% 1/8W 8 C7, 7A, 8, 8A, CP1426 SMD 0.1uF 20% 50V Z5U 10
12A, 15, 15A, 13, 14, 14A,
18, 18A 15, 16, 17
R11, 11A RS1703 SMD 2.2K 5% 1/8W 2 C9-12 CP1645 ALUM EL. 22uF 20% 63V 85Deg 4
R14, 14A RS1702 SMD 22K 5% 1/8W 2 C18 CP1126 POLY FILM 1uF 10% 50V T/R 1
R17, 17A RS1871 SMD 5.1K 5% 1/8W 2 C19 CP1552 SMD 0.1uF 20% 100V Z5U 1
R21, 21A RS1994 100 5% 1/4W C/F T/R 2
R22, 22A, 23, RS1916 C/F 5.1 5% 1/4W T/R 4 Diode
23A D1, 1A, 2, 2A, DI1132 SMD 1N4148 LL-34 PKG T/R 10
R24, 24A, 25, RS1868 W/W 0.1 5% 5W RADIAL 4 3, 3A, 4, 4A,
25A 5, 6
R26, 26A, 44, RS1877 SMD 4.3K 5% 1/8W 4 Z1, 2 DI1150 SMD ZENER 15V 5% CP PKG T/R 2
44A
R27, 27A RS1724 SMD 6.8K 5% 1/8W 2
Integrated Circuits
IC1 IC1175 NE5532 DUAL LOW-N OP-AMP 1
R28, 28A RS1878 SMD 10 5% 1/8W 2
IC2 IC1041 NJM072 DUAL J-FET OP-AMP 1
R31, 32 RS1715 SMD 5.6K 5% 1/8W 2
R33-35 RS1898 SMD 10K 1% 1/8W 3 Inductor
R36 RS2285 SMD 11K 1% 1/8W 1 L1, 1A (120v) MI1100 AIR CORE 0.38uH 2
R37, 39, 40 RS1767 SMD 1M 5% 1/8W 3 L1, 1A (230v) MI11000 INDUCTOR AIR CORE 0.40uH
R42 RS1702 SMD 100K 5% 1/8W 1
R46, 47 RS2180 M/O 470 5% 1W 2 Resistors
J1-6, 8-15, 17 RS1779 SMD ZERO JUMPER 15
Thermistor R1, 1A, 2, 2A, RS1701 SMD 10K 5% 1/8W 21
TH1 NTC 10KW @ 2 5DegC 1 4, 4A, 19, 19A,
20, 20A, 29,
29A, 30, 30A,
Transistors 33-35, 41, 43,
Q1, 1A TR1057 NPN POWER TIP35C TO-218 2 45, 45A
Q2, 2A TR1061 PNP POWER TIP36C TO-218 2 R3, 3A RS1700 SMD 1K 5% 1/8W 2
Q3, 3A TR1183 NPN POWER TIP31C TO220 2 R5, 5A, 8, 8A RS1725 SMD 15K 5% 1/8W 4
Q4, 4A TR1184 PNP POWER TIP32C TO220 2 R6, 6A, 7, 7A, RS1831 SMD 7.5K 5% 1/8 T/R 8
Q5, 5A, 8, 8A, TR1166 PNP 2N5401 TO-92 T/R 7 16, 16A, 38,
13, 13A, 15 38A
Q6, 6A, 7, 7A, TR1167 NPN 2N5551 TO-92 T/R 5 R9, 9A, 13, 13A RS1722 SMD 470 5% 1/8W 4
14 R10, 10A, 12, RS1717 SMD 100 5% 1/8W 8
Q9, 9A TR1043 NPN MPS2222A TO-92 2 12A, 15, 15A,
18, 18A
Q10, 10A, 11, TR1108 SMD NPN 2SC2412K CP PKG. 4
11A R11, 11A RS1703 SMD 2.2K 5% 1/8W 2
Q12, 12A TR1131 SMD NPN DTC1124TK 10K CP 2 R14, 14A RS1704 SMD 22K 5% 1/8W 2
R17, 17A RS1871 SMD 5.1K 5% 1/8W 2
Wires R21, 21A RS1994 100 5% 1/4W C/F T/R 2
JW1-5 WI1623 WIRE #16 SOLID UL1569 GREEN 5 R22, 22A, 23, RS1916 C/F 5.1 5% 1/4W T/R 4
0.8 FOOT 23A
JW6, 9, 10, 11 WI1553 WIRE #22 BARE SOLID TINNED 4 R24, 24A, 25, RS1868 W/W 0.1 5% 5WC RADIAL 4
0.66 FOOT 25A
R26, 26A, 44, RS1877 SMD 4.3K 5% 1/8W 4
44A
R27, 27A RS1724 SMD 6.8K 5% 1/8W 2
R28, 28A RS1878 SMD 10 5% 1/8W 2




9
Powered Subwoofer BASS550


REF. NO. PART NO. DESCRIPTION QTY REF. NO. PART NO. DESCRIPTION QTY
R31, 32 RS1715 SMD 5.6K 5% 1/8W 2 4 BR1411 Bracket Support 60 Deg 1
R36 RS1912 SMD 11.3K 5% 1/8W 1 5 BR1421 Bracket "L" 0.9"x0.9" 1
R37, 39, 40 RS1767 SMD 1M 5% 1/8W 3 6 BR1423 Front Plate 1
R42 RS1702 SMD 100K 1% 1/8W 1 7 BR1495 Alum. Bar 1
R46, 47 RS2180 M/O 470 5% 1W 2 8 SEE FUSES
9 FH1002 Fuse Holder 1/4x1-1/4 1
Thermistor 10 XX1174 AG AC Cord 6ft. UL/CSA aprov. 120V 1
TH1 TH1006 NTC 10KW @ 2 5DegC 1 WI1597 AG AC Cord 6ft. UL/CSA aprov. 230V
11 HS1142 Heatsink Internal 1
Transistors 12 MI1151 AG Power Transformer 120V 1
Q1, 1A TR1057 NPN POWER TIP35CTO-218 2 m1159 AG Power Transformer 230V 1
Q2, 2A TR1061 PNP POWER TIP36 TO-218 2 13 ST1025 Round Spacer 1/2x3/8 length 6
Q3, 3A TR1183 NPN POWER TIP31 TO220 2 14 SW1075 JR Switch Rocker 2P2T Snap-I 1
Q4, 4A TR1184 PNP POWER TIP32 TO220 2 15 XX1259 Knob Black (not shown) 1
Q5, 5A, 8, 8A, TR1166 PNP 2N5401 TO-92 T/R 7 16 XX1269 Gasket 1
13, 13A, 15
17 XX1276 Plastic Cover 1
Q6, 6A, 7, 7A, TR1167 NPN 2N5551 TO-92 T/R 5
14 18 NU1059 Nut 4-40 Keps-Thr. Hexag. Zinc 2
Q9, 95 TR1063 NPN MPS2222A TO-92 2 19 NU1057 Nut 6-32 Keps Zinc Hexag. 2
Q10, 10A, 11, TR1108 SMD NPN 2SC2412K CP PKG 4 20 NU1049 Nut 8-32x1/4 Keps Hexag. 5
11A 21 WA1049 Washer Ext. Tooth #6 Zinc 10
Q12, 12A TR1131 SMD NPN DTC1124TK 10K CP 2 22 WA1080 Washer Flat #8 Steel Zinc 5
23 XX1250 Strain Relief SPT-1 Black 1
Wires 24 SC1253 Screw 4-40x3/8 Pan Phillips 2
JW1-5 WI1623 #16 SOLID UL1569 GREEN 8
25 SC1274 Screw 5-20x1/4 Thread Form. Z. 6
JW6, 9, 10, 11 WI1553 #22 BARE SOLID TINNED 4
0.66 FOOT 26 SC1192 Screw 6-32x3/4 Cutt-Thr. Hex. 8
27 SC1194 Screw 6-32x3/8 Tapt-Thr Hex. 17
Miscellaneous (See Exploded View) 28 SC1282 Screw 10-32x7/8 Pan-Torx Hd. 6
29 SP1073 Sil Pad TO-3P 1/0"x0.75" 12
1 BR1187 Alum. Bar 4.8x12.7x40mm 4
30 SP1072 Sil Pad TO-220 0.750" 3
2 BR1386 Transistor Bar TO-218 2
31 ST1024 1/4 Hex Fem. Standoff 1-1 2
3 BR1395 Bracket Power Support 6
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. Changes required by Engineering