Kenwood SW-37-HTW, SW-37-HTS, SW-37-HTML, SW-37-HT, SW-37-HTH Service Manual

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

JW05

JW30

JW06

JW04

JW01

JW29

JW24

JW23

JW03

JW31

JW25

JW15

JW18

JW402

JW401

JW403

JW28

JW36

JW37

JW27

JW08

JW09

JW07

JW10

JW35

JW11

JW32

JW02

JW34

JW12

JW22

JW21

JW19

JW20

JW14

JW13

JW26

JW17

JW16

JW33

VR401

R521

C523

C508

C422

85

14

R439

R442

R430

R451

R450

R449

R452

C427

R441

R447

C426

R433

C425

R440

R435

R443

R445

R436

C423

C430

R453

R473

C445

C431

R448

R461

R429

R428

C401

C421

C412

C420

R444

R437

R438

R431

R458

C433

R434

C444

R474

R478

R523

C908

RL901

R549

R538

C516

C520

C532

C514

C429

R402

R405

VR402

C408

C447

C446

C441

R476

R401

R413

R466

R462

R465

R477

C443

R475

R467

R471

R463

R472

C406

C405

R470

R469

C417

R406

R408

R407

R404

R403

C403

C404

R415

C407

R411

R416

C428

C418

C414

R410

C409

R412

R414

C410

C411

R539

C910

R902

RL902

C513

R525

C518

R534

C533

C509

C519

R533

21

21

16

R543

71

OIG

OIG

111

10 2

111

10 2

EB

EB

EB

EB

EB

EB

EB

R542

R535

R536

C902

C901

C905

R522

R432

RB401

C530

F902

F901

C906

F903

F904

C531

C913

C914

C915

C907

R540

P1

C529

C434

C432

C402

C528

C527

C909

C911

C912

C521

C502

C534

C510

C522

R527

R528

C507

C524

R901

C904

R530

R546

R524

R537

C535

R529

C515

R550

C503

R541

R531

R548

C525

C526

R545

R544

C903

R547

C517

P2

T1A 250V

T5A 250V

T5A 250V

T1A 250V

JW001

JW002

Q501

Q502

D905

D503

D902

D903

D904

CN901

CN503

IC902

D906

Q503

Q902

Q901

D501

IC901

CN501

Q504

CN502

D901

ZD501

ZD502

IC401

D407

D408

Q404

LD401

D404

D403

Q401

Q402

Q403

CN403

DB901

ZD2

POWER AMP BOARD

PRE AMP BOARD

ZD1

IC402

IC501

SW401

IC403

Q406

Q405

D401

D402

D405

D406

JK401

LINE INPUT CROSSOVER VOLUME

CROSSOVER

FILTER

EB

EB

BEBE

EB

85

1

71

71

814

4

A

R442

4700p

CK45FB1H472K

C

PC BOARD(Component side view)

1

EBD

2

3

4

5

6

7

Refer to the schematic diagram for the value of resistors and capacitors.

3