Alto X23SW Schematic

Service Manual

Model: X23SW (2-WAY STEREO PLUS SUBWOOFER)

ACTIVE CROSSOVER

www.altoproaudio.com

Version: 1.1

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

Electrical

1. SPECIFICATION (X23SW)

Subwoofer Frequency Range

Low - High Frequency Range

THD

S/N Ratio

Controls

Input Level

Output Level

Low Cut

Phase

Power Supply

Connector type

Type

Mains supply

50Hz ~ 250Hz

250Hz ~ 6KHz

<0.05%

>95dB

Continuouliy variable

Sub, Low. High continuously variable

Front panel switches

3-pole IEC , grounded

Servo controlled, stabilized

95-120V /210-240V ,60-50Hz

Power Rating

Physical

Dimensions

Weight

6W

483(W) 194.5(D) 44(H)mm (19" 7.7" 1.7")

2.95 Kg(6.50lb)

D

2.Block Diagram

4321

C

B

A

+15V

20V

PT-SCX-34

102℃

230V

5 6

0v

-15v

BRIDGE

AND FILTER CIRCUIT

0V

20V

0V

115V

AC POWER SW

SUB - LOW

1

A

3

2

over freq.

pass filter

SUB-LOW

900Hz - +9KHz

TL074

100Hz +1KHz

pass filter

LOW-HIGH pass

gain

VR

LOW OUT

1

A

3

2

lower filter pass

1

A

high pass freq.

3

2

TL074

high out

TL074

VR

gain

SUB - LOW

1

A

3

2

over freq.

pass filter

SUB-LOW

100Hz +1KHz

900Hz - +9KHz

TL074

pass filter

LOW-HIGH pass

gain

VR

LOW OUT

1

A

3

2

lower filter pass

1

A

high pass freq.

3

2

TL074

high out

TL074

VR

Title

gain

Number RevisionSize

A4

Date: 2-Nov-2002 Sheet of

File: D:\pc42\pc42\ALTO\ \X23SW\X23SW BLOCK DIGRAME .DDB服務手冊 Drawn By:

100mA

FUSE

AC PLUG

50Hz

AC INPUT 210V-240V

D

1

A

3

213

TL074

2

CN-BAL-FEMALE-2

A -CHANNEL SIGNAL

1

VR

gain

A

3

2

213

CN-BAL-FEMALE-2

TL074

VR

gain

B-CHANNEL SIGNAL

1 2 3 4

C

B

A

D

3. Schematic Diagram

C

B

A

X4

LOW OUT

3c5e1a

4d

2b

220R

R18

4

SW1

30HZ CUT

R17

R16

100K

C9

10uF

13

R14

321

R13

22K

C7

R12

10K

C19

47P

100K

C8

10uF

14

U1D

TL074

12

R15

100K

C20

683(M)

47K

683(M)

8

U1C

TL074

9

10

C6

330P

R11

6K8

X5

HI OUT

3c5e1a

R30

10K

R26

11of

4d

2b

220R

R32

R31

100K

C12

10uF

TASY J.S.

Revisio nModel No:

Drawn By:

Sheet

X23SW V1.0

14

27-Jan-2002

X23(M).Sch

U2D

TL074

10K

47P

R29

INV

SW2

8

U2C

TL074

9

10

C10

330P

6K8

R24

12

13

R27

10K

R28

22K

C11

R25

10K

Titel

ALTO Mobile : X23SW MAIN BOARD

A4

Size

File:

Date:

VR2

100KB

7

U1B

TL074

5

6

C3

103(M)

R5

R4

R1

100K

R8

620K

VR1B

100KB

R6

620K

VR1A

100KB

3K74

1

U1A

TL074

R2

100K

3

2

C1

10uF

C2

10uF

213

X1

5e

C4

R7

103(M)

3K74

1a4d2b

R9

C5

103(M)

3c

10K

R22

10K

R21

10K

R20

10K

2

R19

10K

R3

100K

X2

INPUT

CH1(CH2)

VR3

7

100KB

U2B

TL074

5

6

123

CN3

3P2.5

1

U2A

TL074

3

+15V

411

-15V

TL074

U1E

TL074

U2E

1 2 34

D

C

B

A

D

C

B

A

X5

SUB WOOFER OUT

3c5e1a

4d

2b

4

C30

10uF

220R

R80

3 2 1

R78

100K

14

6 5 4

SW4

SW-6-SK22H13

R79

100K

C31

10uF

ALTO Mobile : X23SW SUB WOOFER BOARD

Titel

U9D

TL074

R75

683M)

100K

123

J102

3P2.5

123

J101

3P2.5

AGND

12

13

321

R74

47K

C29

C28

8

11of

TASY J.S.

Revisio nModel No:

Drawn By:

Sheet

X23SW V1.0

27-Jan-2002

X23(SUB).Sch

A4

Size

File:

Date:

R73

22K

47P

C27

9

C26

330P

R72

10K

C23

473(M)

R69

330K

R67

R66

19K1

1

U9A

TL074

R71

330K

U9C

TL074

10

6K8

VR7

100KB

7

U9B

TL074

5

6

VR6B

100KB

VR6A

100KB

C25

473(M)

C24

473(M)

R68

19K1

+15V

411

-15V

TL074

U9E

3

2

R64

10K0

R63

10K0

D

C

CH1 CH2

B

A

1 2 34

D

4

C

B

A

R1

1.2K

CN5

2P2.5

1

2

SCX POWER Schematic

Number RevisionSize

A4

Title

Date: 27-Jan-2002 Sheet of

File: D:\pc42\pc42\pc42\S-OVER\SCX202S\SCX202S\SCX202S.ddbDrawn By:

CN3

C7

123

C9

1000/16V

3P2.5

104P

IC2

C4

C19

-15V

L7915

104P

1000/35V

CN2

3P2.5

-15V

123

C8

104P

+15V

321

C6

IC1

L7815

C5

C18

1000/16V

104P

1000/35V

DB1

RB154

123

CN?

D

C

CON3

1 2 34

B

A

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

XPWR PCB LAYOUT

PCB : XPWR Bottom Layer PCB : XPWR Bottom Solder Mask

PCB : XPWR Bottom Overlay PCB : XPWR Top Overlay

Hole Size Hole Count 31mil (0.8mm) 14

39mil (1.0mm) 22 63mil (1.6mm) 3 98mil (2.5mm) 4 138mil (3.5mm) 4

Totals 90

PCB : XPWR Drill Drawing Plots

X23SW(SUB) PCB LAYOUT

PCB : X23SW(SUB) Bottom Layer PCB : X23SW(SUB) Bottom Solder Mask

PCB : X23SW(SUB) Bottom Overlay PCB : X23SW(SUB) Top Overlay

Hole Size Hole Count 31mil (0.8mm) 68

39mil (1.0mm) 18 47mil (1.2mm) 10 87mil (2.2mm) 4 138mil (3.5mm) 4

Totals 104

PCB : X23SW(SUB) Drill Drawing Plots

B

5. Wiring Diagram

藍

C

110V

D

4321

A

V2.0

RevisionModel No:

11 of

TASY J.S.

Drawn By:

Sheet

AC IN

CN1

GND

CX22OUT

紅

220V

CN1

CN2CN3

PT-SCX34

CN4

XPWR

GND

CN2

CH1

X23SW(M)

CN3

CH1(CH2)

CN1

LED

電源開關

X23SW

2-Nov-2002

X23SW( ).Sch全

ALTO Mobile : X23SW Wiring Diagram

A4

Titel

Size

File:

Date:

CN2

CH2

CN3

X23SW Wiring Diagram

CN1

CX22OUT

CN2

X23SW(SUB)

CN2

X23SW(M)

CN3

CH1(CH2)

1 2 3 4

D

C

B

A

X23SW-ALTO-230V

Midprod NO

NO.

Quanity

Unit

7. Electrical Parts List

Structure Needing Material Detail List

建檔日: 2002/02/08 2002/10/28修正日:

A-X23SW-ALTO-230V1 1.000 PCS A-X23SW 底后板組合2 1.000 PCS P-X23SW(SUB)3 1.000 PCS P-X23SW(M)4 2.000 PCS P-CX22OUT(R)5 1.000 PCS P-CX22OUT(L)6 1.000 PCS P-XPWR7 1.000 PCS

Page 1 of 1

2002/11/1

X23SW-ALTO-230V

panel(white)

1

MFR2271ZZ

PCS

1.000

X23SW

rear board (spray black-paint)

2

MBK256ZZ

PCS

1.000

X23SW

top cover-printing

3

MTP229ZZ

PCS

1.000

CLE2.0

fuse(T)

4

HD00021

PCS

1.000

100mA 250V φ5*20mm CSA/S/UL/VDE

loop transformer

5

TP3055

PCS

1.000

PT-SCX34

AC outlett

6

HCSA16

PCS

1.000

(S)315-B (AC select)

cover

7

NPL272

PCS

8.000

φ8.5*4 blue 072C

switch cap

8

NPL285

PCS

1.000

φ6*2.5 YELLOW C

9

NPL287

PCS

5.000

φ3*W6*18.3 black ABS

MIC stand nut

10

ME00060

PCS

7.000

JY-6351G-02-250

mic stand washer

11

MF00061

PCS

7.000

JY-6351G-02-250

row-wire connecting wiring

12

HLSF160

PCS

1.000

2P 230mm

row-wire connector wiring

13

HLSF129

PCS

1.000

3P-3P 200m/m

row-wire connector wiring

14

HLSF134

PCS

2.000

3P-3P 120m/m

signle terminal wiring CF:W146

15

HLSC146

PCS

1.000

green/yellow 80m/m

single terminal wiring CF:W76

16

HLSC76

PCS

1.000

green/yellow 150m/m

power push button

17

NMBA02

PCS

1.000

φ15*17

plastic knob double φ11*17.5

18

NMBP64

PCS

8.000

COOL GRAY 8C

black-plated screw

19

MSCB13

PCS

10.000

cross-head pan head 3*6

上蓋,后板

black plated screw

20

MSCB28

PCS

14.000

flat self 3*4

black plated screw

21

MSCB38

PCS

4.000

3*7

面板

black plated screw

22

MSCB34

PCS

2.000

pill 3*6

電源開關

black plated screw

23

MSCB35

PCS

2.000

cross-head pan head 3*10

AC座

black plated screw

24

MSCB58

PCS

4.000

iron-board pill 3*10

平衡座用

colour nut

25

MSTC04

PCS

1.000

4m/m

地線

X23SW AMPItem No: specify:

Mid No: A-X23SW-ALTO-230V standard quantity: 1.000

Page 1 of 3

MARK:

Item Name SpecificNO Material No

UnitQuanity Ps

MARK:

2002/11/1

X23SW-ALTO-230V

colour nut

26

MSTC03

PCS

2.000

3m/m

變壓器

washer

27

MFSS04

PCS

1.000

φ4*φ7*1t

地線

washer

28

MFSC09

PCS

2.000

φ3*φ10*1t

變壓器

washer

29

MFST01

PCS

2.000

φ4*φ8*0.5t

地線

cable tie(black)

30

NMCR01

PCS

5.000

ALT-102SB

self-paste foot pad(SF-004)

31

NLXM39

PCS

4.000

12.7*9.0*3.0t

single wave wired

32

HLSP143

PCS

1.000

UL1007 AWG24 120mm black L5R5

P.V.C single wave wired

33

HLSP158

PCS

1.000

UL1007 AWG22 250mm black

P.V.C wiring

34

HLSP164

PCS

1.000

UL1617 AWG22 250mm black

P.V.C single wave wired

35

HLSP71

PCS

1.000

UL1617 22AWG 80m/m brown

power cord

36

HLSA31

PCS

1.000

Europe 3P LT-312+LT-501

alimentation SW

37

HSWA13

PCS

1.000

SDDLB 1007U

電源SW

L.E.D

38

DL43RG

PCS

1.000

LG2043 green

sleeving flame retardant

39

NMCT20WW0020

PCS

8.000

5φ*20m/m

sleeving flame retardant

40

NMCT16WW0010

PCS

2.000

2.5φ*10m/m

lockable bag

41

NWCP04

PCS

1.000

5*7

PE bag

42

NWCP01WW0300*0580

PCS

1.000

30*58cm

desiccant

43

HEM083

1.000

30g

instruction

44

NMCQA-275

1.000

X23SW ALTO

box45NB01720

PCS

1.000

ALTO 19"系列

label

46

NMLB1588-05ZZ

2.000

X23SW ALTO

paper outter case 4 hole

47

POA182

PCS

0.250

ALTO 19"

sponge barrier

48

PKMS153

PCS

1.000

ALTO 19"

barrier

49

PKMS156

PCS

1.000

ALTO19"

assurance book

50

NMCQ-073

1.000

ALTO

X23SW AMPItem No: specify:

Mid No: A-X23SW-ALTO-230V standard quantity: 1.000

Page 2 of 3

MARK:

Item Name SpecificNO Material No

UnitQuanity Ps

MARK:

2002/11/1

X23SW-ALTO-230V

label

51

NMLM381ZZ

4.000

X23SW

label

52

NE05004

4.000

ALTO

label

53

NMLH31

2.000

MADE IN P.R.C.

box54NA00154

PCS

2.000

ALTO

power switch

55

NI02085

PCS

1.000

φ22*9.69

X23SW AMPItem No: specify:

Mid No: A-X23SW-ALTO-230V standard quantity: 1.000

Page 3 of 3

MARK:

Item Name SpecificNO Material No

UnitQuanity Ps

2002/11/1

X23SW-ALTO-230V

bottom rear plate

1

MBT2171ZZ

PCS

1.000

X23SW

barrier (black)

2

MSDE34ZZ

PCS

1.000

X23

fixed board (black)

3

MSDE35ZZ

PCS

1.000

X23

L-shape fixed bracket

4

MAPR80ZZ

PCS

1.000

1.2*28*20*10(CLE2.0)

iron pillar

5

MMC013

PCS

2.000

hexagon 6.35*M3*6

iron pillar

6

ME00050

PCS

12.000

screw pillar

7

MSC023

PCS

1.000

M4*10*0.7PH

8

MSC030

PCS

2.000

M3*10*0.5PH

X23SW AMPItem No: specify:

Mid No: A-X23SW 底后板組合 standard quantity: 1.000

Page 1 of 1

MARK:

Item Name SpecificNO Material No

UnitQuanity Ps

2002/11/1

X23SW-ALTO-230V

PCB1NPC2081

PCS

1.000

X23SW(SUB)1*3

1/8W fixed resistor

2

RFC122S

R

PCS

1.000

220Ω S type

1/8W fixed resistor

3

RFC268S

R

PCS

1.000

6.8KΩ S type

1/8W fixed resistor

4

RFC310S

R

PCS

3.000

10KΩ S type

1/8W fixed resistor

5

RFC322S

R

PCS

1.000

22KΩ S type

1/8W fixed resistor

6

RFC347S

R

PCS

1.000

47KΩ S type

1/8W fixed resistor

7

RFC410S

R

PCS

3.000

100KΩ S type

1/8W fixed resistor

8

RFC433S

R

PCS

2.000

330KΩ S type

1/8W precision resistor

9

RPC2191S

R

PCS

2.000

19.1KΩ S type

electrolytic capacitor

10

CE610N

C

PCS

2.000

10/16V ψ4*7

row-wire header

11

HCSI0203

CN

PCS

2.000

3P 2.5mm 180°

row-wire header

12

HCSV0202

CN

PCS

1.000

2P 2.0mm 180°

mylar capacitor

13

CL347G

C

PCS

3.000

0.047/50V

mylar capacitor

14

CL368G

C

PCS

2.000

0.068/50V

power switch

15

HSWA18

SW

PCS

1.000

PZ30 PBA-M-2PB1L

integrated circuit

16

SIC002

U

PCS

1.000

TL074CN(S&T)

17

RC00157

VR

PCS

1.000

potentiometer (C100K)

18

RVS104

VR

PCS

1.000

RV142B-20-25A-C15

jumper wire

19

MMCJ06

J

PCS

3.000

8m/m

jumper wire

20

MMCJ12

J

PCS

1.000

12m/m

21

MI01259

PCS

2.000

test-5 φ1.8*10

X23SW AMPItem No: specify:

Mid No: P-X23SW(SUB) standard quantity: 1.000

Page 1 of 1

MARK:

80

71

63 64 72

73

74

75 78 79

67 69

66 68

30 31

Item Name SpecificNO Material No

UnitQuanity Ps

MARK:

2 3

1

23 24 25

28 29

4

9

7

6

1 2 4

3

2002/11/1

X23SW-ALTO-230V

PCB1NPC2082

PCS

1.000

X23SW(M)1*2

1/8W fixed resistor

2

RFC122S

R

PCS

2.000

220Ω S type

1/8W fixed resistor

3

RFC268S

R

PCS

2.000

6.8KΩ S type

1/8W fixed resistor

4

RFC310S

R

PCS

11.000

10KΩ S type

1/8W fixed resistor

5

RFC322S

R

PCS

2.000

22KΩ S type

1/8W fixed resistor

6

RFC347S

R

PCS

1.000

47KΩ S type

1/8W fixed resistor

7

RFC410S

R

PCS

8.000

100KΩ S type

1/8W fixed resistor

8

RFC462S

R

PCS

2.000

620KΩ S type

1/8W precision resistor

9

RPC1374S

R

PCS

2.000

3.74KΩ Stype

electrolytic capacitor

10

CE610N

C

PCS

5.000

10/16V ψ4*7

jumper wire

11

MMCJ04

PCS

1.000

6m/m

metal-film capacitor(MSC)

12

CM410IS

C

PCS

1.000

0.1uF/63V 5% CASE01

jumper wire

13

MMCJ06

J

PCS

4.000

8m/m

row-wire header

14

HCSI0203

CN

PCS

1.000

3P 2.5mm 180°

row-wire header

15

HCSV0205

CN

PCS

1.000

5P 2.0mm 180°

mylar capacitor

16

CL310G

C

PCS

3.000

0.01/50V

mylar capacitor

17

CL368G

C

PCS

2.000

0.068/50V

power switch

18

HSWA18

SW

PCS

2.000

PZ30 PBA-M-2PB1L

integrated circuit

19

SIC002

U

PCS

2.000

TL074CN(S&T)

20

RC00157

VR

PCS

2.000

potentiometer (C100K)

21

RVS104

VR

PCS

1.000

RV142B-20-25A-C15

22

MI01259

PCS

2.000

test-5 φ1.8*10

X23SW AMPItem No: specify:

Mid No: P-X23SW(M) standard quantity: 2.000

Page 1 of 1

MARK:

Item Name SpecificNO Material No

18 32

11 24

12 19 20 21 22 25 27 28 29 30 9

13 26

14

1 15 16 17 2 3 31 4

6 8

5 7

1 12 2 8 9

UnitQuanity Ps

MARK:

J5

101

1 2 3 4

3

2

3 4 5

19 20

1 2

2 3

1

MARK:

2002/11/1

X23SW-ALTO-230V

PCB1NPC2040

PCS

1.000

CX22OUT

MIC jack for balance

2

HCSM61

X

PCS

1.000

JY-5042-030G female plug 180°

MIC jack

3

HC00125

X

PCS

3.000

JY-6351G-02-250

row-wire connector wiring

4

HLSF333

CN

PCS

1.000

5P(male)-5P(parent) 180mm

X23SW AMPItem No: specify:

Mid No: P-CX22OUT(R) standard quantity: 1.000

Page 1 of 1

MARK:

1

2 4 5

1

Item Name SpecificNO Material No

UnitQuanity Ps

2002/11/1

X23SW-ALTO-230V

PCB1NPC2040

PCS

1.000

CX22OUT

MIC jack for balance

2

HCSM61

X

PCS

1.000

JY-5042-030G female plug 180°

MIC jack

3

HC00125

X

PCS

4.000

JY-6351G-02-250

row-wire connector wiring

4

HLSF331

CN

PCS

1.000

2P(male)-2P(parent) 180mm

row-wire connector wiring

5

HLSF333

CN

PCS

1.000

5P(male)-5P(parent) 180mm

X23SW AMPItem No: specify:

Mid No: P-CX22OUT(L) standard quantity: 1.000

Page 1 of 1

MARK:

1

2 3 4 5

2

1

Item Name SpecificNO Material No

UnitQuanity Ps

2002/11/1

X23SW-ALTO-230V

PCB1NPC0106

PCS

1.000

XPWR(1*4)

1/8W fixed resistor

2

RFC212S

R

PCS

1.000

1.2KΩ S type

ceramic capacitor

3

CC410F

C

PCS

4.000

0.1uF SL

electrolytic capacitor

4

CE747E

C

PCS

2.000

470/25V

electrotytic capacitor

5

CE822F

C

PCS

2.000

2200/35V φ16*31.5mm

bridge rectifier

6

DB001A

DB

PCS

1.000

RB154 1A/400V

integrated circuit

7

SIC717

IC

PCS

1.000

7815

integrated circuit

8

SIC719

IC

PCS

1.000

7915

row-wire header

9

HCSI0203

CN

PCS

2.000

3P 2.5mm 180°

row-wire header

10

HCSI0202

CN

PCS

1.000

2P 2.5mm 180°

row-wire header

11

HCSR0203

CN

PCS

1.000

3P 3.96mm 180°

silicone insulator

12

STR802-T2

2.000

TO-220 square type

heat sink

13

MHL013

PCS

2.000

MA103*25m/m*2PIN

washer

14

MFSS03

PCS

2.000

φ3*φ5*1t

Ni screw

15

MSCN16

PCS

2.000

pill 3*6 thin tooth P0.5

X23SW AMPItem No: specify:

Mid No: P-XPWR standard quantity: 1.000

Page 1 of 1

MARK:

1

4 5 8 9

6 7

18 19

1

2

2 3

4

Item Name SpecificNO Material No

UnitQuanity Ps

MARK:

1

8. Exploded Views

Alto X23SW Schematic

Specifications and Main Features

Frequently Asked Questions

User Manual