
POWERED SUBWOOFER
SW-37HT/37HT-H/37HT-ML/
SW-37HT-S/37HT-W
SERVICE MANUAL
2003-6 PRINTED IN KOREA
B51-5856-00 (K/K) 1803
CROSSOVER
FILTER
OFF
ON
MIN
60Hz 200Hz
AUTO SHUTOFF
ON
OFF
POWER
SW slide
(S62-0218-08)
VOLUME
MAX
CROSSOVER
LINE INPUT
STARDBY / ON
ON
OFF
Knob(VOLUME)
(K29-0580-08)
Grille ass'y *
(B06-)
NOTE: THE GRILLE CANNOT BE
REMOVED.
SW Rocker
(S66-0205-08)
Line cord *
(E30-)
Bushing AC line
(J42-0259-08)
* Refer to parts list on page 7.
SPECIFICATIONS
Type ............................................................Subwoofer system with
built-in amplifier
[Amplifier]
Dynamic Power ..........................................75 W + 75 W (4 Ω)
(For U.S.A. and Canada)
Rated Output Power (FTC)
50 W + 50 W RMS, at 4 Ω 100 Hz, with no more than 0.3% T.H.D.
Input Sensitivity & Input Impedance ........170 mV (12 kΩ)
Rated Power Consumption .......................100W
(For other countries)
Rated Output Power ..................................60 W + 60W RMS
(100 Hz,4 Ω)
Input Sensitivity & Input Impedance ........170 mV (12 kΩ)
Rated Power Consumption .......................100W
Notes:
1. Kenwood follows a policy of continuous advancements in development. For this reason, specifications may be changed
without notice.
2. Full performance may not be exhibited in extremely cold locations (below 0 deg. C).
[Speaker]
Enclosure ......................................Bass-Reflex, Floor Standing
Type
Speaker Units ................................200 mm (8") Cone type
Nominal Impedance ......................4 Ω + 4 Ω
Dimensions ...................................Width : 300 mm (11-13/16")
Height : 350 mm (13-3/4")
Depth : 480 mm (18-7/8")
Net Weight .....................................14 kg (30.9 lb)
Supplied accessories
Pin-plug cord .............................................................1
Cushion .....................................................................4

SW-37HT/37HT-H/37HT-ML/37HT-S/37HT-W
Attaching the cushions
Attach four cushions to the base of the subwoofer, one at
each corner. The cushions prevent the subwoofer from
sliding, and dampen its vibrations.
Pin-plug cord (1)
(E30-5964-08)
Cushion (4)
(G13-1141-08)
WARNING
Due to the mains switch was located at the rear panel, the
apparatus must be located in the open area without any
obstructions to access the mains switch.
ACCESSORIES
Accessories
How to Replace Woofer
Insert the scew driver to a gap between cabinet and grille assy from bottom side.
2

A
D404 D403
D401D402
(3/4)
(4/4)
(2/4)
IC402
IC402
IC402
SW401
CROSSOVER
CROSSOVER
FILTER
INPUT
JK401
(2/2)
IC401
(1/2)
IC401
D407
D408
Q402
Q401
CN503
IC501
CN501
IC502
CN502
Q501
Q502
ZD501
D503
ZD502
DUAL
SW902
IC401,403 : NJM4558D
IC402 : TL074CN
IC501,502 : LM3886T
IC901 : KIA7815API
IC902 : KIA7915PI
Q401-406,503,504,902
: 2SC945
Q501,502 : 2SA733
D401-408,501 : 1N4148
D503,901 : 1N4001
D902-905 : 1N5392
ZD501 : MTZJ15(B)
ZD502 : MTZJ8.2(B)
DB901 : KBU8B
B LINE
B LINE
SIGNAL LINE
SP1
1K
220P
100P
C402
C401
R401
4.7u50
0.1
C404
C403
9
10
8
12
13
14
11
4
6
5
7
36K
R402
5.6K
R403
R405
100
R407
R406
56K
56K
0.056
C408
JUMP
C405 C406
0.056
C407
0.056
R411
330K
2.7K
R416
4.7K
R410
C409
100P
100K(B)
VR401
4.7K
R415
C418
0.1
C428
100u25
+
0.1
C417
100u25
+
C429
10K
R438
270K
R436
10K
R437
270K
R435
4.7u50
+
C430
10K
R433
56
R434
47K
R413
100K
R429
2.2u50
C421
+
4.7K
R430
2K
R431
47P
C423
C422
0.1
100K
R428
2.2M
R432
2.2K
R458
100u16
C431
+
6
5
8
4
7
C425 47P
R440
R439
1K
560K
+
680K
R445
2
3
1
R442
82K
R443
470u16
4700p
C427
220K
R441
100u16
C426
+
680K
R444
1M
01
C433
1
2
3
4
5
6
7
GND
+15V
GND
-15V
10
9
2
7
3
GND NC
5
6
NC V+
11
8
NC
OUT
22u50
C517
+
470P
C519
1K
R535
1
4
V- V+
0.22
C527
C513
0.1
0.1
C507
C528
0.047
MUTE
20K
R537
C515
30P
47K
R539
20K
R533
2.7
R524
0.1
C509
2
1
6800P
C535
R525
C518
22u50
+
1K
MUTE
C516
R540
47K
2.7
30P
0.1
C508
0.047
C531
R538
20K
9
10
R534
20K
470P
C520
R536
0.1
C514
0.1
NC
V+
GND
4
V-
NC
6
7
NC
1
V+
5
2
3
OUT
8
C510
11
6800P
C534
1
2
47u50
C522
+
C502
4.7u50
+
C503
4.7u50
+
2.2K22K
R546
10K
R531
C525
0.01
R541
2.2K
R545
22K
R544
100u25 100u25
C524 C521
++
47K
R528
R530
15K 47K
R527
33K
R523
680
1/4W
1.2K
R521
1/4W
56K
R522
10u25
C523
+
T1
WHT
GRY
BLK
A
A
+15V
+15V
+15V
15V
15V
V+V+
V+
V+
V
V
V
V
V
V
+15
+15V
15V
+B
B
R404
47K
0033
C411
C529
0.22
R529
C530
0.22
+
PRE AMP BOARD
POWER AMP BOARD
B C D E
SW-37HT/37HT-H/37HT-ML/37HT-S/37HT-W
1
2
3
4
5
6
CAUTION: For continued safety, replace safety critical components only with manufacturer's recommended parts (refer
to parts list). indicates safety critical components. For continued protection against risk of fire, replace only with same
type and rating fuse(s). To reduce the risk of electric shock, leakage-current or resistance measurements shall be carried
out (exposed parts are acceptably insulated from the supply circuit) before the appliance is returned to the customer.
7
4
PRE AMP BOARD 1/2

F GIH J
(1/4)
IC402
SW401
CROSSOVER
FILTER
IC403 (1/2)
(2/2)
IC403
D405
D406
VOLUME
(1/2)
IC401
Q406
Q405
Q403
Q404
LD401
RB401
AUTO
SHUTDOWN SW
CN403
CN501
CN502
CN901
D904 D905
D902D903
DB901
D901
501
Q502
Q504
Q503
D501
Q902
SW901
120V
INPUT
230V
SW901
INPUT
100V
SW901
INPUT
240V
SW901
INPUT
SW901
INPUT
SW902
SP1
3
2
1
100K(B) 4.7K
100
R414
18K
R412
0.1
C410
100K(B)
VR402
2
3
1
18K
R476
C434
R466
100P
C432
0.01
1K
R465
1K
2.2u50
+
C441
4.7K
R467
7
6
8
5
4
10u50
C445
R474
10K 10u50
C444
+
R473
120K
+
10K
R463
1M
R477
10K
R475
1M
R470
10K
R471
680K
R445
2
3
1
82K
R443
680K
R444
0.1
C433
100u25
C420
+
10K
R448
51K
R453
1K
R452
2.2K
R451
R478
10K
R449
10K
R461
33K
100u25
C412
+
10K
R447
4.7u50
C414
+
1
2
3
4
5
6
7
GND
+15V
GND
-15V
47K
R469
47K
R472
0.01
C443
2
1
1
2
6
5
4
3
2
1
INOUT
GND
100
R543
GND
OUT IN
1/4W
100 1/4W
R542
C912
100u25
0.1
C910
+
C911
0.1
C909
100u25
+
0.1
C903
0.1
C904
C902
1000u35
+
C901
+
1000u35
∗
F901
∗
F904
6800u506800u50
C908
C906
0.1 0.1
C907
C905
++
∗
F903
RL901
330
R901
1W
1
3
2.2K22K
R546
0.01
R541
2.2K
R545
22K
R544
R547
10K
C526
0.01
R548
10K
∗
F902
3
1
0.01
C900
AC120V
6
4
5
3
2
1
60Hz
RED
WHT
WHT
AC230V~
50Hz
C900
GRY
0.01
T1
T1
T1
C900
WHT
BLK
0.01
50/60Hz
AC100V
T1
C900
WHT
GRY
0.01
50Hz
AC240V~
C900
0.01
AC110-120V/220-240V~
50/60Hz
LK
120V
AC220-
AC110-
240V
+15V
+15V
15V
V+
V+
V+
V
V
+15V
+15V+15V+15V
+15V
+15V+15V+15V
15V15V
DUAL
VERSION
100V
120V
240V
230V
T1AL 250V
T1AL 250V
T1AL 250V
1A 250V
1A 250V
F901,902 F903,904
T5AL 250V
T5AL 250V
T5AL 250V
5A 250V
5A 250V
0.033
C411
22K
R462
1.5K
R450
ON OFF
100u25
C447
+
0.1
C446
0.1
C914
C913
0.1
IC901
IC902
SW-37HT
SW-37HT/37HT-H/37HT-ML/37HT-S/37HT-W
The DC voltage is an actual reading measured with a high
impedance type voltmeter with no signal input. The
measurement value may vary depending on the measuring
instruments used or on the product.
PRE AMP BOARD 2/2
5

SW-37HT
SW401
CROSSOVER
FILTER
VR402
VOLUME
MAX MIN
VR401
CROSSOVER
200Hz 60Hz
JK401
LINE INPUT
A
B
C
D
E
F
M3x8(BLK)
4x20(BLK)
3x8(BLK)
M3x6(BLK)
M4
3x10(BLK)
: N30-3008-45
: N44-4020-45
: N89-3008-45
: N30-3006-45
: N14-0933-08
: N83-3010-45
G
H
J
K
L
M
M2x6(BLK)
M4x12(BLK)
3x10(BLK)
M3x10(BLK)
4x20(BLK)
3x6
: N30-2006-45
: N09-3688-08
: N87-3010-45
: N30-3010-45
: N45-4020-45
: N09-3813-08
710
710
712
734
724
M
D
D
E
x2
Ex2
K
K
K
F
x3
Fx2
Gx2
Ax2
L
L
L
F
x2
Lx6
D
D
D
x2
Cx2
Bx8
Jx4
Kx3
Lx3
Hx4
724
725
640
632
x2
628
713x2
713x2
718x2
747
721
721
723
723
729
T1
RB401
SW901
SW902
636
714
703
601
708
706
707
SP1
661
660
709
703
SW-37HT/37HT-H/37HT-ML/37HT-S/37HT-W
EXPLODED VIEW
A B
1
2
3
6
Parts with exploded view numbers larger than 700 are not supplied.

✽ New Parts
Parts without Parts No. are not supplied.
Les articles non mentionnes dans le Parts No. ne sont pas fournis.
Teile ohne Parts No. werden nicht geliefert.
Ref. No
Add-
ress
New
Parts
Parts No.
Description
Desti-
nation
SW-37HT(Y19-7450-10)
- ✽ B61-1179-00 INSTRUCTION MANUAL(ENG)
- ✽ H10-8375-08 POLYSTYRENE FOAMED FIXTURE
- ✽ H10-8376-08 POLYSTYRENE FOAMED FIXTURE
- ✽ H25-2536-08 POLY BAG L16 IVA000001-0018
- H25-2537-08 POLY BAG L600x IVA000001-0026
- ✽ H51-1946-08 CARTON L556xW3 ICC100142-0014 ESXS
- ✽ H51-1947-08 CARTON L556xW3 ICC100142-0010 KBPB
- ✽ H51-1948-08 CARTON L556xW3 ICC100142-0011 EBXB
- ✽ H51-1949-08 CARTON L556xW3 ICC100142-0012 XW
- ✽ H51-1950-08 CARTON L556xW3 ICC100142-0013 MW
- ✽ H51-1962-08 CARTON L556xW3 ICC100142-0015 KHPH
- ✽ H51-1971-08 CARTON L556xW3 ICC100142-0017 EM
601 2A ✽ B06-1725-08 GRILLE ASSY (SILVER) ESXS
601 2A ✽ B06-1727-08 GRILLE ASSY (GRAY) EBXB
601 2A ✽ B06-1727-08 GRILLE ASSY (GRAY) KBPB
601 2A ✽ B06-1727-08 GRILLE ASSY (GRAY) KHPH
601 2A ✽ B06-1727-08 GRILLE ASSY (GRAY) XWMW
601 2A ✽ B06-1748-08 GRILLE ASSY (ML) EM
628 1A K27-0211-08 PUSH KNOB ;SU- BPK009012-0001
632 1B K29-0580-08 VOL. KNOB BLA BPK005018-0003
636 1B ✽ J42-0259-08 BUSHING AC LIN DBU001001-0010
640 1B E30-5998-08 LINE CORD 2P 1 VPE003012-0020 EBEMES
640 1B E30-5998-08 LINE CORD 2P 1 VPE003012-0020 MW
640 1B ✽ E30-7031-08 LINE CORD 2P VPA004012-0010 KBKH
640 1B ✽ E30-7031-08 LINE CORD 2P VPA004012-0010 PBPH
640 1B ✽ E30-7033-08 LINE CORD 2P 1 VPE001014-0010 XBXSXW
660 1A E30-5964-08 RCA CABLE 300 VRC101002-0010
661 1A G13-1141-08 FOOT ;D25 BPE000011-0001
A N30-3008-45 SCREW M3 HSP053084-3080
B N44-4020-45 SCREW ;W#8 HSP058041-3201
C N89-3008-45 SCREW ;T3. HSP050214-3081
D N30-3006-45 SCREW ;M3. HSP053084-3060
E ✽ N14-0933-08 NUT+WASHER;M4. HNS011700-1430
F N83-3010-45 SCREW T3. HSP040053-3100
G N30-2006-45 SCREW ;M2. HSP053053-3060
H N09-3688-08 SCREW ;M4. HSD043103-3120
J N87-3010-45 SCREW ;T3. HSP050054-3100
K N30-3010-45 SCREW ;M3. HSP053084-3100
L N45-4020-45 SCREW ;W#8 HSP058041-3201
M ✽ N09-3813-08 SCREW ;T3. HSW050054-3060
SP1 3A ✽ T10-1219-05 WOOFER FSD12A080-0401
T1 2B ✽ L07-3042-05 PWR TRANS 120V TTI112010-0150 KBKH
T1 2B ✽ L07-3042-05 PWR TRANS 120V TTI112010-0150 PBPH
T1 2B ✽ L07-3043-05 PWR TRANS. AXI TTI123010-0150 EBEMES
T1 2B ✽ L07-3044-05 PWR TRANS. AXI TTI115330-0150 MW
T1 2B ✽ L07-3046-05 PWR TRANS. AXI TTI124010-0150 XBXSXW
ELECTRONIC PARTS
LD401 ✽ B30-1847-08 LED 3 DIA GREE KED530003-0010
C401 CK45FB1H221K CERAMIC 220PF K
C402 CC45FCH1H101J CERAMIC 100PF J
C403 CE04LW1H4R7M ELECTRO 4.7UF 50WV
C404 CQ92FM2A104J MYLAR 0.10UF J
L : Scandinavia K : USA P : Canada R : Mexico C : China I : Malaysia
Y : PX(Far East,Hawaii) T : England E : Europe G : Germany V : China(Shanghai)
7
Y : AAFES(Europe) X : Australia Q : Russia H : Korea M : Other Areas indicates safety critical components .
1
Re-
marks
✽ New Parts
Parts without Parts No. are not supplied.
Les articles non mentionnes dans le Parts No. ne sont pas fournis.
Teile ohne Parts No. werden nicht geliefert.
New
Ref. No
C405-407 CQ92FM2A563J MYLAR 0.056UF J
C409 CC45FCH1H101J CERAMIC 100PF J
C410 CQ92FM2A104J MYLAR 0.10UF J
C411 CQ92FM2A333J MYLAR 0.033UF J
C412 CE04LW1E101M ELECTRO 100UF 25WV
C414 CE04LW1H4R7M ELECTRO 4.7UF 50WV
C417,418 CK45FB1H104Z CERAMIC 0.10UF Z
C420 CE04LW1E101M ELECTRO 100UF 25WV
C421 CE04LW1H2R2M ELECTRO 2.2UF 50WV
C422 CQ92FM2A104J MYLAR 0.10UF J
C423 CC45FCH1H470J CERAMIC 47PF J
C425 CC45FCH1H470J CERAMIC 47PF J
C426 CE04LW1C101M ELECTRO 100UF 16WV
C427 CE04LW1C471M ELECTRO 470UF 16WV
C428,429 CE04LW1E101M ELECTRO 100UF 25WV
C430 CE04LW1H4R7M ELECTRO 4.7UF 50WV
C431 CE04LW1C101M ELECTRO 100UF 16WV
C432 CC45FCH1H101J CERAMIC 100PF J
C433 CK45FB1H104Z CERAMIC 0.10UF Z
C434 CK45FB1H103Z CERAMIC 0.010UF Z
C441 CE04LW1H2R2M ELECTRO 2.2UF 50WV
C443 ✽ C90-6518-05 MYLAR 0.010UF J
C444,445 CE04LW1H100M ELECTRO 10UF 50WV
C446 CK45FB1H104Z CERAMIC 0.10UF Z
C447 CE04LW1E101M ELECTRO 100UF 25WV
C502,503 CE04LW1H4R7M ELECTRO 4.7UF 50WV
C507,508 CK45FB1H104Z CERAMIC 0.10UF Z
C509,510 CQ92FM2A104J MYLAR 0.10UF J
C513,514 CK45FB1H104Z CERAMIC 0.10UF Z
C515,516 CC45FCH1H300J CERAMIC 30PF J
C517,518 CE04LW1H220M ELECTRO 22UF 50WV
C519,520 CK45FB1H471K CERAMIC 470PF K
C521 CE04LW1E101M ELECTRO 100UF 25WV
C522 CE04LW1H470M ELECTRO 47UF 50WV
C523 CE04LW1E100M ELECTRO 10UF 25WV
C524 CE04LW1E101M ELECTRO 100UF 25WV
C525,526 CK45FB1H103Z CERAMIC 0.010UF Z
C527 CK45FB1H224Z CERAMIC 0.22UF Z
C528 CK45FB1H473Z CERAMIC 0.047UF Z
C529,530 CK45FB1H224Z CERAMIC 0.22UF Z
C531 CK45FB1H473Z CERAMIC 0.047UF Z
C534,535 CK45FB1H682K CERAMIC 6800PF K
C900 C91-0971-05 FILM 0.01UF 250WV
C901,902 CE04LW1V102M ELECTRO 1000UF 35WV
C903,904 CK45FB1H104Z CERAMIC 0.10UF Z
C905,906 ✽ C90-6517-05 ELECTRO 6800UF 50WV
C907-910 CK45FB1H104Z CERAMIC 0.10UF Z
C911,912 CE04LW1E101M ELECTRO 100UF 25WV
C913,914 CK45FB2A104Z CERAMIC 0.10UF Z
JK401 ✽ E63-0222-08 RCA JACK 1P CJR001101-0050
F901,902 F06-1022-05 FUSE 1A 250V S KSA020100-0040 EBEMES
F901,902 F06-1022-05 FUSE 1A 250V S KSA020100-0040 MW
F901,902 F06-1022-05 FUSE 1A 250V S KSA020100-0040 XBXSXW
F901,902 F50-0066-05 FUSE 1A 250V S KSA020100-0010 KBKH
L : Scandinavia K : USA P : Canada R : Mexico C : China I : Malaysia
Y : PX(Far East,Hawaii) T : England E : Europe G : Germany V : China(Shanghai)
Y : AAFES(Europe) X : Australia Q : Russia H : Korea M : Other Areas indicates safety critical components .
Add-
ress
Parts
Parts No.
Description
Desti-
nation
2
Re-
marks
SW-37HT/37HT-H/37HT-ML/37HT-S/37HT-W
PARTS LIST

HOW TO READ THE PARTS LIST
ABBREVIATION OF MODEL AND MASS PRODUCTION'S DESTINATIONS
SW-37HT-H
SW-37HT
SW-37HT-ML
SW-37HT-S
SW-37HT-W
SW-37HT-H
SW-37HT
SW-37HT-ML
SW-37HT-S
SW-37HT-W
MODEL
MODEL
Australia
Canada China England
X
P
B
XB
PB
PH
ABB.
-
-
-
-
-
-
H
-
-
M
-
--
S
XS
--
W
XW
--
Mexico
PX/AAFES Russia Scandinavia
B
-
-- -
H
-
-- -
M
-
-- -
S
-
-- -
W
-
-- -
Europe
EB
E
-
EM
ES
-
Shanghai
-
-
-
--
-
Germany
-
-
-
-
-
USA
KB
K
KH
-
-
Korea
-
-
-
-
-
Other area
-
M
-
-
-
MW
Malaysia
-
-
-
-
-
Japan
-
J
-
JM
JS
JW
ABB.
8
✽ New Parts
Parts without Parts No. are not supplied.
Les articles non mentionnes dans le Parts No. ne sont pas fournis.
Teile ohne Parts No. werden nicht geliefert.
New
Ref. No
F901,902 F50-0066-05 FUSE 1A 250V S KSA020100-0010 PBPH
F903,904 F05-5025-05 FUSE 5A 250V S KSA420500-0110 EBEMES
F903,904 F05-5025-05 FUSE 5A 250V S KSA420500-0110 MW
F903,904 F05-5025-05 FUSE 5A 250V S KSA420500-0110 XBXSXW
F903,904 F50-0074-05 FUSE 5A 250V S KSA020500-0012 KBKH
Add-
ress
Parts
Parts No.
Description
Desti-
nation
3
Re-
marks
SW-37HT/37HT-H/37HT-ML/37HT-S/37HT-W
F903,904 F50-0074-05 FUSE 5A 250V S KSA020500-0012 PBPH
- ✽ L92-0702-08 BEAD FERITCN403SFB001001-0200
R542,543 RD14BB2E101J RD 100 J 1/4W
R901 RS14GB3A331J FL-PROOF RS 330 J 1W
VR401,402 R31-0412-08 CNTL ROTARY MVR002203-1040
RB401 ✽ S62-0218-08 SW SLIDE 3 P MSW004034-0010
RL901 S76-0206-08 RELAY MI- MRL012002-0010
SW401 S68-0203-08 SW PUSH PS- MSW003006-0010
SW901 ✽ S66-0205-08 SW ROCKER 16A/ MSW008015-0030
SW902 ✽ S62-0217-08 SW SLIDE MSW004015-0020 MW
D401-408 1N4148 DIODE SW; 1N41 RAD114148-0010
D501 1N4148 DIODE SW; 1N41 RAD114148-0010
D503 1N4001 DIODE;RECTIFIE RAD114001-0010
D901 1N4001 DIODE;RECTIFIE RAD114001-0010
D902-905 1N5392 DIODE 1N5 RAD115392-0010
DB901 ✽ KBU8B BRIDGE KBU8B 8 RHD208010-0010
IC401 NJM4558D IC(OP AMP X2)C RHI004558-0001
IC402 TL074CN IC 14 PIN TL0 RHI000740-0001
IC403 NJM4558D IC(OP AMP X2)C RHI004558-0001
IC501,502 ✽ LM3886T IC 11 PIN LM3 RHI003886-0001
IC901 KIA7815API IC(VOLTAGE REGULATOR/ +15V)01
IC902 KIA7915PI IC 3 PIN AN7 RHI007915-0001
Q401-406 2SC945 XISTR NPN 2SC RAN200945-0001
Q501,502 2SA733 XISTR PNP 2SA RAP200733-0001
Q503,504 2SC945 XISTR NPN 2SC RAN200945-0001
Q902 2SC945 XISTR NPN 2SC RAN200945-0001
ZD501 MTZJ15(B) DIODE ZENR 14. RAZ005015-0020
ZD502 MTZJ8.2(B) DIODE ZENR 7.8 RAZ005008-0010
PARTS LIST
L : Scandinavia K : USA P : Canada R : Mexico C : China I : Malaysia
Y : PX(Far East,Hawaii) T : England E : Europe G : Germany V : China(Shanghai)
Y : AAFES(Europe) X : Australia Q : Russia H : Korea M : Other Areas indicates safety critical components .