Alto X23SW User manual

ServiceManual
www.altoproaudio.com
Version: 1.1
Model: X23SW (2-WAY STEREO PLUS SUBWOOFER)
ACTIVE CROSSOVER

CONTENTS
1. Specification
2. Block Diagram
3. Schematic Diagram
4. Printed Circuit Board
5. Wiring Diagram
6. Test Procedure
7. Electrical Parts List
8. Exploded Views & Mechanical Parts List
9. Notes

483(W) 194.5(D) 44(H)mm (19" 7.7" 1.7")
2.95 Kg(6.50lb)
Electrical
50Hz ~ 250Hz
250Hz ~ 6KHz
<0.05%
>95dB
Controls
Continuouliy variable
Sub, Low. High continuously variable
Front panel switches
Front panel switches
Power Supply
3-pole IEC , grounded
Servo controlled, stabilized
6W
Physical
Weight
Subwoofer Frequency Range
Low - High Frequency Range
THD
S/N Ratio
Input Level
Output Level
Low Cut
Phase
Connector type
Type
Mains supply
Power Rating
Dimensions
95-120V /210-240V ,60-50Hz
1. SPECIFICATION (X23SW)

1 2 3 4
A B C D
4321
D C B ATitle
Number RevisionSize
A4
Date: 2-Nov-2002 Sheet of File: D:\pc42\pc42\ALTO\ \X23SW\X23SWBLOCKDIGRAME.DDB服務手冊 Drawn By:
100mA
FUSE
5 6
AC POWER SW
AC INPUT 210V-240V
AC PLUG
50Hz
102℃
PT-SCX-34
230V
0V
115V
20V
0V
20V
BRIDGE
AND FILTER CIRCUIT
+15V
0v
-15v
2 1 3
A -CHANNEL SIGNAL
CN-BAL-FEMALE-2
3 21
A TL074
VR
gain
LOW-HIGH pass
900Hz - +9KHz
high pass freq.
3 21
A
TL074 high out
VR
gain
pass filter
over freq.
100Hz +1KHz
SUB-LOW
SUB - LOW
pass filter
3 21
A
TL074
VR
gain
lower filter pass
3 21
A TL074
VR
gain
LOW OUT
2 1 3
B-CHANNEL SIGNAL
CN-BAL-FEMALE-2
3 21
A TL074
VR
gain
LOW-HIGH pass
900Hz - +9KHz
high pass freq.
3 21
A
TL074 high out
VR
gain
pass filter
over freq.
100Hz +1KHz
SUB-LOW
SUB - LOW
pass filter
3 21
A
TL074
VR
gain
lower filter pass
3 21
A TL074
VR
gain
LOW OUT
2.Block Diagram

1234
A B C D
4
321
D
C B A
X23(M).Sch
Titel Size File: Date:
Drawn By: Sheet
RevisionModel No:
27-Jan-2002
TASY J.S.
ALTO Mobile : X23SW MAIN BOARD
11of
X23SW V1.0
A4
1 2 3
CN3 3P2.5
3 2
1
U1A
TL074
5 6
7
U1B TL074
10
9
8
U1C
TL074
R4 100K
R1
100K
R2 100K
R8 620K
R12 10K
R7 3K74
C6
330P
R13 22K
R11 6K8
C5 103(M) C4 103(M)
C3
103(M)
VR2
100KB
2 1 3
X1
C7
47P
VR1B 100KB
411
U1E
TL074
-15V
C9 10uF
C8
10uF
R18
220R
R17
100K
R16 100K
VR1A 100KB
R5 3K74
R6
620K
C2 10uF
C1
10uF
R3
100K
3 2
1
U2A
TL074
R9 10K
R21
10K
R20 10K
5 6
7
U2B
TL074
R22 10K
VR3
100KB
SW1
30HZ CUT
R15 100K
10
9
8
U2C
TL074
12 13
14
U2D
TL074
R25 10K
C10
330P
R26 22K
R24
6K8
C11
47P
R27
10K C12
10uF R32
220R
R31
100K
SW2
INV
R28 10K
R29
10K
R30
10K
R14 47K
12 13
14
U1D
TL074
C19 683(M)
C20 683(M)
411
U2E
TL074
+15V
R19 10K
3c 5e 1a
4d 2b
X4
LOW OUT
3c 5e 1a
4d 2b
X5
HI OUT
3c 5e 1a 4d 2b
X2
INPUT
CH1(CH2)
3. Schematic Diagram

1234
A B C D
4
321
D
C B A
X23(SUB).Sch
Titel Size File: Date:
Drawn By: Sheet
RevisionModel No:
27-Jan-2002
TASY J.S.
ALTO Mobile : X23SW SUB WOOFER BOARD
11of
X23SW V1.0
A4
1 2 3
J101 3P2.5 AGND
3 2
1
U9A
TL074
5 6
7
U9B TL074 10
9
8
U9C
TL074
12 13
14
U9D
TL074
R63 10K0
R64 10K0
R69 330K
R72 10K
1
3
4
5
6
2
SW4
SW-6-SK22H13
R68 19K1
R73 22K
R71
6K8
C25 473(M)
C28
683M)
C24 473(M)
C23 473(M)
VR7 100KB
VR6B 100KB
CH1 CH2
C29
683M)
R74 47K
R75 100K
+15V
-15V
411
U9E
TL074
C30 10uF
C31
10uF
R80
220R
R79 100K R78 100K
VR6A
100KB
R66 19K1
R67
330K
1 2 3
J102 3P2.5
C26
330P
C27
47P
3c 5e 1a
4d 2b
X5
SUB WOOFER OUT

1234
A B C D
4
321
D
C B ATitle
Number RevisionSize
A4
Date: 27-Jan-2002 Sheet of File: D:\pc42\pc42\pc42\S-OVER\SCX202S\SCX202S\SCX202S.ddbDrawn By:
SCX POWER Schematic
DB1
RB154
C5 104P C4 104P
IC1
L7815
IC2
L7915
C6
1000/16V
C7
1000/16V
C8
104P
C9
104P
1 2 3CN2
3P2.5
+15V
-15V
1 2
CN5
2P2.5
R1
1.2K
+15V
-15V
1 2 3
CN3
3P2.5
C18
1000/35V
C19
1000/35V
1 2 3
CN? CON3

4.Printed Circuit Diagram
X23SW(M) PCB LAYOUT
PCB : X23SW(M) Top Overlay
PCB : X23SW(M) Bottom Layer
PCB : X23SW(M) Bottom Solder Mask
PCB : X23SW(M) Bottom Overlay

PCB : X23SW(M) Drill Drawing Plots
Hole Size Hole Count
31mil (0.8mm) 128
39mil (1.0mm) 21
47mil (1.2mm) 17
63mil (1.6mm) 1
87mil (2.2mm) 6
138mil (3.5mm) 4
Totals 177

CX22OUT PCB LAYOUT
PCB : CX22OUT Bottom Layer
PCB : CX22OUT Bottom Solder Mask
PCB : CX22OUT Top Overlay
PCB : CX22OUT Drill Drawing Plots
Hole Size Hole Count
39mil (1.0mm) 7
55mil (1.4mm) 3
87mil (2.2mm) 20
110mil (2.8mm) 1
Totals 31