SW-38HT.pdf

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SW-38HT_38HT-B
POWERED SUBWOOFER
SW-38HT/-38HT-B
SERVICE MANUAL
© 2004-6 PRINTED IN KOREA
B51-5905-00 (K/K) 876
Woofer
(T10-1253-05)
RCA
(E63-0223-08)
Knob
(K29-0596-08)
100W POWERED
SUBWOOFER
POWER ON
Cloth frame *
(B06-)
AC Power cord bushing
(J42-0261-08)
AC Power cord *
(E30-)
Switch
(S66-0206-08)
SPECIFICATIONS
Type ...................... Subwoofer system with built-in amplifier
[Amplifier]
Dynamic Power ................................................. 100 W (6 Ω )
[Speaker]
Enclosure ........................ Bass-Reflex, Floor Standing Type
Speaker Units ............................ 160 mm (6-1/2") Cone type
Nominal Impedance ....................................................... 6
(For U.S.A. and Canada)
Rated Output Power (FTC)
Ω
Dimensions
Width ................................................... : 210 mm (8-1/4")
Height ................................................ : 400 mm (15-3/4")
Depth ................................................. : 350 mm (13-3/4")
Net W eight .................................................... 9.2 kg (20.3 lb)
Supplied accessories
Pin-plug cord .................................................................. 1
100 Hz, with no more than 0.7 % T.H.D.
Input Sensitivity & Input Impedance ........ 300 mV (37 k Ω )
Rated Power Consumption ........................................ 70 W
Frequency Responce................................... 35 Hz ~ 200 Hz
Ω
(For other countries)
Rated Output Power ....................... 75 W RMS (100 Hz,6 Ω )
Input Sensitivity & Input Impedance ........ 300 mV (37 k
)
Rated Power Consumption ........................................ 70 W
Frequency Responce................................... 35 Hz ~ 200 Hz
Ω
NOTE:THE GRILLE CANNOT BE REMOVED.
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).
70%
75 W RMS, at 6
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SW-38HT
ACCESSORIES
Accessories
Pin-plug cord (1)
(E30-7068-05)
AC plug adapter(1)
(E03-0260-05)
How to Replace Woofer
Cut the cloth of cloth frame ass’y and replace it with new one after mount the speaker.
2
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A
B
C
D
E
PC BOARD ( Component side view )
1
I/O
VR1
R4
8
5
LED
D2
D1
IC1
1
4
21
2
CN5
C4
C3
C1 R2
R3
R1
L1
JW27
R6
C7
R5
3
8
5
IC2
MAIN
R7
1
4
C8
R8
C9
Q11
Q9
R43
R44
Q7
EC
EC
EC
R42
D10
E
Q8
C
Q12
R41
R38
EC
R36
R23
R40
D9
R39
D4
C28
R45
R50
R9
JW23
JW15
1
4
POWER SUPPLY
4
8
5
C27
R51
JW22
R49
R17
IC3
JW26
JW25
D12
1
4
JW24
CN7
1
3
Q10
R47
R20
R19
R18
R16
R21
JW14
R48
EC
10
6
D3
T1
D14
D16
JW11
5
CN4
D17
R13
D13
JW10
3
1
JW12
R11
JW7
R46
R10
R15
RL1
R14
JW 0
6
D5
CN3
JW27
1
5
C16
R33
R27
R30
R26
C14
CN9
C20
C21
Q5
EC
21
4
1
EC
R29
Q6
EC
Q2
R24
R31
JW17
D7
E
C
CN6
12
R32
R28
R25
D6
Q3
7
Refer to the schematic diagram for the value of resistors and capacitors.
3
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A
B
C
D
E
SW-38HT
I/O
+B
+B
C8
C3 1000P
R3 47K
IC2
0.068
JK1
∗
∗
(2/2)
R1
C2
C6
C7
R7
R8
5
6
L1
39K
22u25
+
2
8
7
22K
22K
3
8
C10
CN1
SUB-IN
C5
1
10u50
+
10u50
+
1
2
3
1
2
6
5
R4
7
IC2
4
3
1K
IC1
(1/2)
IC1
4
(1/2)
(2/2)
B
B
4
MAIN
IC4
R20
+B
1K
R23
10K
R17
Q1
10K
2
8
R21
10K
1
6
C13
47P
3
7
R16
5
100K
4
IC3
(1/2)
C19
IC3
4.7u50
(2/2)
+
CN2
R9
1
2
3
4
R15
2.2K
Q2
B
R26 47K
R25 47K
Q5
Q4
D6
D7
RL1
Q6
Q3
CN3
LED
1
2
CN5
CN6
2
1
2
1
R35
Q10
R46
Q8
22K
R34
D14
D15
33K
470
CN4
2W
D10
D8
1
D11
Q9
Q7
2
Q11
3
R45
6.8K
D13
R47
470
+B
+B
B
B
Q12
2W
IC1-3 : TL072
IC4 : TDA7293V
SW1 POWER SW
Q1,3,4,6,8,9,11
: 2N3906
Q2,7 : 2N3904
Q5 : 2N5401
Q10 : MPSW06
Q12 : MPSW56
D1-9,11,13,16,17
: 1N4148
POWER SUPPLY
CN7
P2
P1
1
2
3
C33
∗
F1
CN10
0.01
BLK
WHT
1
2
T2
T1
(K,P) : AC120V 60Hz
D10 : 1N5240B
5
5
(Y)
: AC110-120V/220-240V~
D12 : 1N5246B
D14 : KBU4D
50/60Hz
CN9
F2
(E)
: AC230V~ 50Hz
4
4
T1.25AL 250V
(X)
: AC240V~ 50Hz
1
2
3
4
(J)
: AC100V~ 50/60Hz
SIGNAL LINE
6
7
8
6
GND LINE
3
7
3
S1
DESTINATION
COUNTRY
U.S.A.
CANADA
F1
JW 0
+B
B LINE
B LINE
8
ABB.
B
9
2
9
110-120V
220-240V
K
T2A
NO
P
10
10
2
EUROPE
E
T1.25AL
NO
1
SW-38HT
K,P EXYJ
C6,7 0.068 0.68
R6
PX
Y
T2AL
NO
1
AUSTRALIA
X
J
T1.25AL
T2.5A
YES
USED
(K) (P) (E) (X) TYPE
JAPAN
NO
USED (Y) TYPE
270K 18K
SW-38HT
CAUTION: For continued safety, replace safety critical components only with
manufacturer's recommended parts (refer to parts list). indicates safety crit-
ical components. For continued protection against risk of fire, replace only
with same type and rating fuse(s). To reduce the risk of electric shock, leak-
age-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.
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.
4
1K
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SW-38HT
EXPLODED VIEW
A
B
702
616
605
700
712
1
706
LED PCB
B x2
751
C x2
C x2
SP1
714
2
707
F
G x2
604
F
F
711
F x2
MAIN PCB
709
752
753
711
VOLUME
711
I/O PCB
VR1
C
C
JK1
INPUT
C
B
C
B x2
H x2
715
713
754
POWER
SUPLY PCB
E
C
708
T1 or
T2
B x2
3
C x2
610
SW1
H x2
D x2
C
B
C
D
E
F
G
H
φ
3x10(BLK)
: N44-3010-45
:
:
:
:
:
:
φ
4x16(BLK)
N44-4016-45
N44-4010-45
N86-3006-45
N86-3010-45
N86-3014-45
N10-2040-46
D x2
C x2
φ
4x10(BLK)
C
C
603
φ
3x6(BLK)
φ
3x10(BLK)
601
3x14(BLK)
N4
SW-38HT
Parts with exploded numbers larger than 700 are not supplied.
5
φ
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