Kenwood 1050-SW Service manual
POWERED SUBWOOFER
103SW/SW-301
1050SW/SW-501
SERVICE MANUAL
Knob
(K29-0573-08)
Knob
(K29-0577-08)
Knob
(K29-0578-08)
KENWOOD badge
(B43-0302-04)
©1997-10/B51-5376-00 (K/K) 2295
RCA pin jack
(E23-0224-08)
Speaker terminal
(E21-0279-08)
Cloth frame assy
(B06-1144-08)
Note : Refer to SW-900 service manual(B51-4228-00) if you need
the microprocessor information.
Window
(B10-3302-08)
Panel *
(A29-)
Knob
(K29-0576-08)
Slide switch
(S62-0207-08)
Power cord bushing
(J42-0234-08)
* Refer to parts list on page 8.
SPECIFICATIONS
Amplifier
Power output 150 watts RMS into 4 ohms, 100 watts RMS into 4 ohms,
Phase switching Normal, Reverse Normal, Reverse
Input sensitivity and input impedance
RCA-type jack 70 mV (12 k-ohms) 70 mV (12 k-ohms)
Push-type terminals 1.7 V(15 k-ohms) 1.7 V(15 k-ohms)
Supply voltage AC 110 V~120 V (1050SW) AC 110 V~120 V(103SW)
Rated power consumption 150 watts 110 watts
Speaker
Enclosure Ported Ported
Speaker units 12 in (300 mm) polypropylene 10 in (250 mm) polypropylene
Nominal impedance 4 ohms 4 ohms
Width 14.3 in (363 mm) 11.8 in (300 mm)
Height 21.7 in (550 mm) 18.9 in (480 mm)
Depth 18.9 in (480 mm) with grille 15.6 in (395 mm)
Net weight 53 lb (24 kg) 40 lb (18 kg)
Since Kenwood follows a policy of continuous advancement in development, these specifications may change without notice.
1050SW(SW-501) 103SW(SW-301)
from 20 Hz to 200 Hz, with no from 20 Hz to 200 Hz,with no
more than 0.09%total more than 0.09%total
harmonic distortion harmonic distortion
cone cone
AC power cord*
(E30-)
103SW/SW-301/1050SW/SW-501
1
1
2
3
x3
Dc voltmeter
5 mV
R611
(a)
No.
ITEM
INPUT
SETTINGS
OUTPUT
SETTINGS
AMPLIFIER
SETTINGS
ALIGNMENT
POINTS
ALIGN FOR
FIG.
Unless otherwise specified, the individual switches should be set as following :
POWER : ON NO SIGNAL INPUT
1
IDLE CURRENT
–
Connect a DC
voltmeter to
R611
VOLUME : 0
VR601
5 mV
(a)
CONTENTS/DISASSEMBLY FOR REPAIR/ADJUSTMENT
Contents
SPECIFICATIONS........................................Top cover
CONTENTS ............................................................... 2
DISASSEMBLY FOR REPAIR....................................2
ADJUSTMENT............................................................2
DISASSEMBLY FOR REPAIR
< How to remove the front panel >
1. Remove the decoration plate (1) by a pincette to the bottom of
the front panel, then remove the 3 screws (2).
2. 103SW/SW-301: Remove the front panel in the upper slanting
direction of the arrow (3).
1050SW/SW-501 : Remove the front panel just the frontwards.
PC BOARD ................................................................ 3
SCHEMATIC DIAGRAM............................................ 5
EXPLODED VIEW ......................................................7
PARTS LIST................................................................8
ADJUSTMENT
2
ACEGIBDFHJ
PC BOARD(Component side view
1
2
3
)
4
5
6
7
Refer to the schematic diagram for the value of resistors and capacitors.
3 4
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