GTO752

2 CHANNEL POWER AMPLIFIER

SERVICE MANUAL

Released 2007

Discontinued XXXX

JBL Consumer Products

250 Crossways Park Dr.

GTO752

- CONTENTS -

GTO 752 Specifications

Output Power:

(14.4V supply)

Signal-to-noise ratio:

Dynamic power:

Frequency response:

THD+N 1KHz LPF=22KHz

Channel Separation

Maximum input signal:

SPECIFICATIONS ………………………………………..1

PACKING……………………………………………..…....2

CONTROL/INSTALLATION DRAWINGS………………3

CONTROL/INSTALLATION INSTRUCTIONS………....4

BASIC TROUBLESHOOTING……………………………5

EXPLODED VIEW/PARTS LIST…….….….…………....6

AMPLIFIER BLOCK DIAGRAM…………………….……7

ELECTRICAL PARTS LIST ..……….……….…….…….8

P.C.B. DRAWINGS….………………………...…….……11

IC/TRANSISTOR PINOUTS..…………………….….…..13

SCHEMATICS……………..……………….………..…...14

75W RMS x 2 channels @ 4 ohms; ≤1% THD + N

110W RMS x 2 channels @ 2 ohms; ≤1% THD + N

200W RMS x 1 channel (bridged) @ 4 ohms; ≤1% THD + N

90dBA (reference 1W into 4 ohms)

108dBA (reference rated power into 4 ohms)

130W @ 2 ohms

10Hz – 100kHz (–3dB)

≤0.07% (rated power @ 4 ohms)

≥45db (full rated power)

6.0V

Hi-Pass, Low Pass X-over Limits

Bass Boost @ 50Hz

Output regulation:

Idle Current @ 4 ohms

Max Current Draw

Remote Operating Voltages

40Hz – 450Hz ±20%

0-6dB

.03dB @ 4 ohms

0.5A

<30A @ 2 ohms both channels driven

ON 5V OFF 4V

Circuit Protection

Dimensions:

Temperature (80±5C), Short circuit, Operating voltage range (8-16V)

12 ¼ x 10 3/8 x 2 1/8” (310 x 263 x 53mm)

Fuse: 30A

JBL continually strives to update and improve existing products, as well as create new ones. The specifications and details in this and related JBL publications are therefore subject to change without notice.

1

GTO752

2

GTO752

4x

1x

1x

10-3/8"

263mm

01 2

2-1/8"

53mm

12-1/4"

310mm

5 6 7

8

B

AB C D E

C

A

B

C

3

GTO752

GTO752 CAR AUDIO POWER AMPLIFIER OWNER’S MANUAL

Installation Warnings and Tips

• Disconnect the negative (–) lead from your vehicle’s battery.

• At the installation sites, locate and make a note of all fuel lines, hydraulic brake lines, vacuum lines and electrical wiring. Use extreme caution when cutting or drilling in and around these areas.

• Choose a safe mounting location away from moisture.

• Make sure there is sufficient air circulation at the mounting location for the amplifier to cool itself.

• Mount the amplifier, using the supplied hardware.

Specifications

• 75W RMS x 2 channels @ 4 ohms and

≤1% THD + N*

• 110W RMS x 2 channels @ 2 ohms and

≤1% THD + N*

• THD + N: 0.07% (rated power @ 4 ohms)

• Signal-to-noise ratio: 90dBA

(reference 1W into 4 ohms)*

• Signal-to-noise ratio: 108dBA

(reference rated power into 4 ohms)

• Frequency response: 10Hz – 100kHz (–3dB)

• Max power: 220 watts

* CEA-2006A-compliant

0 Speaker Output Connectors

• Connect the speakers to these terminals, observing proper polarity.

• Two-channel operation: Connect the left speaker to the L+ and L– terminals and the right speaker to the R+ and R– terminals.

• One-channel (bridged) operation: Connect the single speaker to the R+ and L– terminals.

• Minimum speaker impedance for 2-channel operation is 2 ohms. Minimum speaker impedance for 1-channel (bridged) operation is 4 ohms.

1 Fuses

• Replace only with the same type and rating.

2 Power Input Connectors

• +12V: Connect to the positive terminal of the vehicle’s battery. 10 AWG wire is recommended.

Install an appropriate fuse holder and fuse (30A minimum) within 18 inches of the battery. Make sure the wire is not damaged or pinched during installation. Install protective grommets when routing wires through the firewall or other sheet metal.

• GND: Connect to the vehicle’s chassis. Refer to the picture below.

Factory Bolt Ring Connector

Ground Wire

Note: Remove any paint below ring connector.

Star Washer

• REM: Connect to the “Remote Out” lead from the source unit or to a source of switched

12V+ (ACC).

3 Aux Output Connectors (RCA)

• Nonfiltered pass-through output. Connect to the input of an additional amplifier.

4 Input Connectors (RCA)

• Connect to the RCA outputs from the source unit or signal processor.

5 Input-Level Control

• Used to match the input level of the amplifier to the output level of the source unit.

• See B for the adjustment procedure.

6 Front Crossover-Frequency Control

• 12dB/octave crossover, variable from

32Hz to 320Hz.

• See C for the adjustment procedure.

7 Crossover-Filter Selector

• LPF: Select for subwoofer(s).

• FLAT: Select for full-range speakers when no subwoofer will be used in the system.

• HPF: Select for midrange speakers or full-range speakers when a subwoofer is used in the system.

8 Bass-Boost Control

• Set the Bass-Boost control according to your preference, being careful not to apply enough boost to damage your speaker(s).

9 Power On LED

• Illuminated when the amplifier is on.

A Protect LED

• Illuminated under any of the following fault conditions: battery over/under voltage, short circuit in speaker wires, amplifier is too hot, amplifier’s output circuit has failed (DC voltage is present in the amplifier’s output).

B Setting Input Level

A Turn Input-Level control counterclockwise to

6V (minimum).

B With a dynamic music track playing, turn the head unit’s volume control to the 3/4 position.

C Turn Input-Level control clockwise until the music is so loud that it no longer sounds clear

(distortion is present in the output).

D Turn Input-Level control counterclockwise gradually, just until the music sounds clear, once again.

E Input level is now adjusted correctly.

C Setting the Crossover

A Crossover setting for 5" or larger full-range speakers when no subwoofer is included in the system.

B Crossover setting for midrange and/or full-range speakers when a subwoofer is included in the system.

C Crossover setting for subwoofers.

Note: Acceptable frequency ranges are indicated in gray.

4

This product is designed for mobile applications and is not intended for connection to the mains.

A valid serial number is required for warranty coverage.

Features, specifications and appearance are subject to change without notice.

GTO752

Amplifier Troubleshooting Guide

1. Status LED on Amplifier not Lit - Head Unit (Source) Turned ON

Verify:

A. Remote turn-on wire from source to amplifier has proper voltage

B. Power (B+) connections at amplifier, terminal blocks, and battery are secure

C. Ground (GND) connections at amplifier and vehicle chassis are secure

D. Battery B+ fuse (if used) is OK

E. Amplifier fuse is OK

F. B+ at battery and B+ at amplifier has proper voltage

2. Status LED’s Lit, No Output from Speakers in Normal Operating Condition

Verify:

A. RCA cables from amplifier to source are securely connected

B. Volume adjustment on amplifier is correctly adjusted

C. Source is ON and playing

3. Engine Noise From Speaker(s)

Turn source OFF, Disconnect RCA cables at amplifier. If noise stops, check equipment & cables leading to amplifier.

Verify:

A. RCA cables are of good quality with no breakage to internal shields

B. RCA cables from source to amplifier are not run alongside any power cables

4. Amplifier Output Distorted Music

Verify:

A. Source output music to amplifier is not distorted

B. Source output sensitivity is correctly adjusted

5. Amplifier Shuts Down, Green LED.s are Lit - Amplifier is in Thermal Protection Mode

Verify:

A. Amplifier is mounted with adequate air circulation around heatsinks or vents

B. Amplifier is not mounted under carpet or sealed enclosure

C. Speakers meet correct impedance for application (mono or stereo hookup)

6. Amplifier Does Not Turn ON, and Red LED is Lit Amplifier (and not Connected to a Shorted Speaker)

Verify:

A. Speaker crossover (if used) is not defective

5

GTO752

EXPLODED VIEW

Part Number Part Number

Trans. Clamp

Trans. Clamp

Trans. Clamp

1380-0206-00

RCA Cap (Red)

RCA Cap (Wht)

Front Plate

Standoff

6

A

D

C

B

1 2 3 4 5

GTO752

BLOCK DIAGRAM

6

INPUT L

OP

A

2

OP

10 32 320 100K

MODE HP/FLAT/LP

VARIABLE LPF/HPF

32Hz-320Hz/12dB

MODE HP/FLAT/LP

VARIABLE LPF/HPF

32Hz-320Hz/12dB

10 32 320 100K

10 50 100K

BASS BOOST

VARIABLE

0dB-6dB/50Hz

BASS BOOST

VARIABLE

0dB-6dB/50Hz

10 50 100K

AMP

MAIN AMP

FRONT L

MAIN AMP

FRONT R

AMP

INPUT R

AUX OUT L

OP

OP

AUX OUT R

OP

A

2

OP

+15V

-15V

+VCC

-VCC power supply Battery

4 ohm/2 ohm speaker

BTL-4ohm speaker

C

4 ohm/2 ohm speaker

D

B

A

7

1 2 3 4 5 6

Capacitors

06D212274001

06D212266010

06D212264103

06D213375101

06D214765000

06D211074100

06D202264109

06D211066109

06D211056001

06D212285106

06D213384003

06D321037200

06D321047200

06D321027200

06D321247000

06D325637000

06D328237200

06D232207000

GTO752

GTO752 Electrical Parts List

Part Number

Description

Qty Reference Designator

MAIN PCB

Resistors

0702-34R7-02

0702-3220-02

0702-2221-02

0702-1220-02

0702-1470-02

0702-1101-02

0702-1821-02

0702-1102-02

0703-1332-03

0702-1562-02

0702-1472-02

0702-1103-02

0702-1473-02

0702-1563-02

0702-1104-02

0702-1221-02

0702-1682-02

0702-1273-02

0703-1301-03

0702-1223-02

0703-1223-03

0703-1103-03

0703-1472-03

0703-1562-03

0705-50R1-06

0704-6271-02

1204-2030-01

1204-5031-18

1204-5021-06

0703-2392-03

Resistor

Resistor

Resistor

Resistor

Resistor

Resistor

Resistor

Resistor

Resistor

Resistor

Resistor

1/2W 4.7Ω ±5%

1/2W 22Ω ±5%

1/4W 220Ω ±5%

1/8W 22Ω ±5%

1/8W 47Ω ±5%

1/8W 100Ω ±5%

1/8W 820Ω ±5%

1/8W 1KΩ ±5%

1/8W 3.3KΩ ±1%

1/8W 5.6KΩ ±5%

1/8W 4.7KΩ ±5%

Resistor 1/8W 10KΩ ±5%

Resistor

Resistor

Resistor

Resistor

Resistor

Resistor

Resistor

Resistor

Resistor

Resistor

1/8W 47KΩ ±5%

1/8W 56KΩ ±5%

1/8W 100KΩ ±5%

1/8W 220Ω ±5%

1/8W 6.8KΩ ±5%

1/8W 27KΩ ±5%

1/8W 300Ω ±1%

1/8W 22KΩ ±5%

1/8W 22KΩ ±1%

1/8W 10KΩ ±1%

Resistor

Resistor

Resistor

Resistor

1/8W 4.7KΩ ±1%

1/8W 5.6KΩ ±1%

5W 0.1Ω*2 ±5% 26*5*18MM

2W 270Ω ±5% potentiometer B20K KQ L=15 ±15% (INPUT LEVEL) potentiometer

A50K R0971G2B W=5 KQ L=15MM

T=7.5MM M=1MM (FREQ) potentiometer B5K KQ L=15 ±10% 1,1" (BASS BOOST)

Resistor METAL MF 1/4W 3.9KΩ ±1%

2 R25B R25C

3 R46 R20 R19

2 R20B R20C

8 R16C R16B R15C R15B R14C R14B R13B R13C

4 R4B R3C R4C R3B

6 R38 R39 R40 R41 R12B R12C

4 R24C R23C R24B R23B

16

R227 R226 R119A R17C R17B R2C R2B R1C

R1B R120A R111 R106 R28C R27B R27C R28B

2 R18C R18B

10

R9C R9B R8B R8C R118A R117A R116A R115A

R19C R19B

3 R2 R32 R37

22

R113A R108A R107A R104A R101A R100A R50

R36 R11C R11B R10C R10B R7C R7B R6C R6B

R5C R5B R110A R103A R1 R4D

3 R34 R106A R114A

6 R56B R56C R222 R221 R323 R320

5 R52 R55 R43 R217 R216

2 R112A R105A

2 R102A R109A

2 R127 R128

2 R231 R241

2 R101 R100

2 R204 R201

13

R316 R315 R314 R313 R312 R211 R209 R208

R207 R205 R203 R202 R200

4 R229 R224 R230 R210

2 R26C R26B

2 R22C R22B

2 R63 R62

1 VR200

1 VR100A

1 VR101

1 R45

Cap electro 220UF/25V ±20% 8*16 105

Cap electro 22uF/50V ±20% 5*11 105

Cap electro 220uF/25V ±20% 8*12 105

Cap electro 330UF/35V ±20% Ф8*14MM 105

Cap electro 47UF/35V ±20% 5*11 105

Cap electro 100uF/25V ±20% 6.3*11 105

Cap electro 22uF/25V ±20% 5*12 105

Cap electro 10uF/50V ±20% 5*11 105

Cap electro 1UF/50V ±20% 5*11 105

Cap electro 2200UF/35V ±20% 16*26MM 105

Cap electro 3300UF/25Vφ 18*26MM ±20% 105

Capacitor 103/100V ±5%

Capacitor

Capacitor

Capacitor

Capacitor

Capacitor

104/100V ±5%

102/100V ±5%

124/100V ±5%

563/100V ±5%

823/100V ±5% porcelin Cap 22pF/100V ±20%

8

2 C216 C217

11

C15 C200 C201 C206 C211 C212 C11C C11B

C12C C12B C207

2 C42 C41

2 C32 C31

2 C55 C38

4 C37 C7C C7B C40

1 C18

2 C1C C1B

2 C9C C9B

2 C58 C59

1 C17

2 C7 C6

6 2C 1C C8C C8B C10B C10C

1 C29

2 C131 C106

2 C130 C107

4 C104A C105A C102A C103A

4 C101A C100A C109A C108A

GTO752

Part Number

Description

Qty Reference Designator

MAIN PCB

06D231007001

06D231017000

06D233917000

06D234717001

06D231047000

06D211076001 porcelin Cap 10PF/100V ±20% 105 porcelin Cap 100pF/100V ±20%

Capacitor 391/100V ±20% porcelin Cap 470PF/100V ±20% porcelin Cap 0.1uF/100V ±20%

Cap electro 100UF/50V ±20% 8*12 105 5mm

4 C227 C226 C215 C214

14

C225 C222 C221 C220 C219 C218 C3C C3B C2C

C2B C223 C224 C103A C103B

4 C5C C4C C5B C4B

2 C6C C6B

17

C9 C208 C205 C203 C202 C48 C47 C39 C14 C8

C56 C57 3C 4C C30 C28 C209

1 C10A

Miscellaneous

1501-0300-02

1501-0400-01

1601-303G-00

1401-0004-00

1001-0003-10

1005-5R00-10

1380-0206-00

3000-GTO7-01

1404-0020-04

1501-0209-00

1333-0204-00

PL-L0002-000

2100-0069-02

JD-E00020515

PWM PCB

Semiconductors

04WY-51AV104 diode schottky 5.1V DO-35 0.5W

04WY-15BV204 diode schottky 15V DO-35 1W

04PT-4148-04

04ZL-5401-06 diode diode

1N4148 GSS 200MA 75V DO-35

1N5401 DO-201AD

2SC8050 NPN TO-92 03N2-8050-01

03P1-1015-01

03N1-1815-01

03P1-5401-01

03P1-B647-01

Transistor

Transistor

Transistor

Transistor

Transistor 2SB647 1A 120V 0.9W PNP TO-92

03N1-5551-01

03N1-SA13-01

03N1-667A-01

03P1-1023-01

03N1-35CW-26

03P1-36CW-26

04GS-R104-00

03D1-50N6-24

2202-1602-05

2202-1620-05

2000-0017-00

2004-0014-00

01JR-4558-02

Transistor

Transistor

Transistor

Transistor

Transistor

Transistor diode

Rectifier

LED

LED

IC

2N5551 NPN TO-92

MPSA13 0.5A 30V NPN TO-92

2SD667AC 1A 120V 0.9W NPN TO-92

2SA1023 TO-92 PNP

TIP35CW NPN T0-247

TIP36CW PNP T0-247

FR104 1A 400V 52MM

MOS Transistor HFP50N06 TO-220

Rectifier UF1602CT AKA 16/200V TO-220

MUR1620CTA KAD 16A/200V TO-220

red with red light Φ3MM 2P (PROTECT)

Φ3.0MM blue with blue light (POWER)

NJM4558 SIP-8 Dual Op-Amp

Resistors

0701-2221-03

0701-2101-03

0701-2102-03

0701-2302-03

0701-2472-03

0701-2682-03

0701-2562-03

1 ZD2

2 ZD6 ZD4

10 D21 D15 D14 D11 D2C D2B D2 D1C D1B D1

1 D7

2 Q8C Q8B

4 Q9C Q10C Q9B Q10B

10 Q23 Q22 Q7C Q7B Q5 Q4 Q2C Q2B Q1C Q1B

2 Q4C Q4B

2

2

1

1

1

8

Q12C Q12B

2 Q11C Q11B

2 Q3C Q3B

2 Q5C Q5B

1 Q19

Q6C Q6B

2 Q13C Q13B

5 D9 D8 D6 D5 D3

4 Q14 Q16 Q15 Q13

1 D10

D12

LED1

LED2

U103 U302 U202 U201 U200 U100 U102 U101 terminal terminal

BTS3-24 POWER

BTS4-23 SPEAKER fuse 30A/32V DC fuse holder BXS-09

1 CN1

1 CN3

1 F1

1 for F1 inductor φ11 φ0.8 2 toroidal inductor 5uH Φ23 Φ1.2*3 7T 1

L6

L1 tem switch 80 KSD301 1 attach to heat sink

Transformer φ376:13 L1=L2 0.8*8*6TS L3=L4 0.8*5*13TS 1 T1

RCA JACKS AV4-8.4-38 QUAD

Molex socket Pitch 2.54MM 2PIN slide switch SSH-23D04-2P3T L:9MM (LPF/FLAT/HPF) sheet GND GND-3 wire 2PIN UL1007 AWG26 L=35mm 2.54 5mm insulator 5*10*10MM 35° black

1 RCA200

2 CN4 CN5

1 SW100

1 JK1

1

2 for MPSA13

SMD resistor

SMD resistor

SMD resistor

SMD resistor

SMD resistor

SMD resistor

SMD resistor

SMD 220Ω 1/8W ±1% 0805

SMD 100Ω 1/8W ±1% 0805

SMD 1KΩ 1/8W ±1% 0805

SMD 3KΩ 1/8W ±1% 0805

SMD 4.7KΩ 1/8W ±1% 0805

SMD 6.8KΩ 1/8W ±1% 0805

SMD 5.6KΩ 1/8W ±1% 0805

1

1

6

1

1

2

1

R17

R10

R31 R30 R29 R28 R26 R15

R13

R11

R5 R51

R14

9

GTO752

Part Number

Description

Qty Reference Designator

PWM PCB

0701-2103-03

0701-2113-03

0701-2123-03

0701-2153-03

0701-2183-03

0701-2223-03

0701-2333-03

0701-2334-03

0701-2104-03

0701-3102-02

SMD resistor SMD 10K 1/8W ±1% 0805

SMD resistor SMD 11KΩ 1/8W ±1% 0805

SMD resistor SMD 12KΩ 1/8W ±1% 0805

SMD resistor SMD 15KΩ 1/8W ±1% 0805

SMD resistor SMD 18KΩ 1/8W ±1% 0805

SMD resistor SMD 22KΩ 1/8W ±1% 0805

SMD resistor SMD 33KΩ 1/8W ±1% 0805

SMD resistor SMD 330KΩ 1/8W ±1% 0805

SMD resistor SMD 100KΩ 1/8W ±1% 0805 resistor SMD 1KΩ 1/4W ±5% 1206

2 R1 R23

1 R27

1 R24

1 R53

1 R7

2 R18 R9

1 R65

1 R3

3 R25 R12 R4

8 R1 R2 R3 R4 R5 R6 R7 R8

Capacitors

06D211054104

06D211074101

Cap electro 1uF/25V ±20% 4*7 105C 1 C3

Cap electro 100UF/25V 6.3*7mm 5mm ±20% 105C black 1 C27

06D212273001

06D214764103

Cap electro 220UF/16V ±20% 8*7 105C 5MM

Cap electro 47UF/25V ±20% 6*7 105C black 5mm

06S321026000 SMD Capacitor SMD 1000pF/50V 0805 NPO ±5%

06S121046000 SMD Capacitor SMD 0.1uF/50V 0805 X7R ±10%

1

2

1

2

C22

C1 C20

C26

C4 C25

Semiconductors

04WY-39AV101 diode schottky SMD 3.9V DO-213AA 0.5W

04WY-15BV-01 diode schottky SMD 15V 1/2W ±2% DO-213AA

04PT-4148-01 diode SMD 1N4148 DO-213AA

03P1-1015-04

03P1-B649-07

03N1-1815-04

01TI-L494-09

03P1-1015-01

Transistor

Transistor

Transistor

IC

Transistor

SMD 2SA1015 SOT-23 PNP

2SB649A 1.5A 180V 20W PNP TO-126

SMD 2SC1815 SOT-23 NPN

SMD TL494C SO-16 PWM

2SA1015 150MA 60V 400MW PNP TO-92

Miscellaneous

1501-0409-02 socket PITCH 2.54mm 4PIN 90°

1

1

6

2

ZD2

ZD1

D4 D1 D20 D3 D2 D13

1 Q10

1 Q6

4 Q3 Q2 Q7 Q1

1 U1

2 Q9 Q8

CN2 CN1

LED PCB

2100-0067-02 wire

2PIN UL1007 AWG26 L=70mm 5mm high temperature 105Cwire

2100-0068-02 wire

2PIN UL1007 AWG26 L=210mm 2.54

5mm,high temperature105Cwire

2005-0009-00 guide light LED 2*3*4mm

06S121046000 SMD Capacitor SMD 0.1uF/50V 0805 X7R ±10%

3701-0124-01 PCB board

LED light board:single side PCB board 94VO

94*44*1.6MM REV:1.0

2

1

8 LED1 LED2 LED3 LED4 LED5 LED6 LED7 LED8

1 C1

1

10

GTO752

11

GTO752

12

GTO752

13

D

C

B

A

1

1 2 3 4 5 6 7

GTO752

CN4

CON2.54*2

1

CN4

CON2.54*2

2

R1

10K

PRO

R1

1K

R2

1K

R3

1K

R4

1K

R5

1K

R6

1K

R7

1K

R8

1K

RT1

80

℃

2

2

1

1

2

1

+12

V-

MUTE

R34

47K

MUTE

C18

R37

4.7K

Q19

A1023

D1

IN4148

R43

100K

D3

FR104

AC

LED1

LED

LED2

LED

LED3

LED

LED4

LED

LED5

LED

LED6

LED

LED7

LED

LED8

LED

CN5

CON2.54*2

CN5

CON2.54*2

CN6

GND

12V

DC12V

REM

CON4

4

3

2

1

+12

+12V

R4D

10K

ZD2

5.1V

R36

10K

+12V C17

C28

104/P

C15

22uF/50V

R45

3.9K1/4W

C9

104P

C19

2

D7

IN5401

L1A

5UH

1 6

F1C

30A

6

C8

104P

5

CA1

NC

CA2

NC

C30

104/P

5

C10

NC

CN1

3

2

1

PGND

REM

+12V

CN3

4

3

2

1

CH1OUT

CH2OUT

CN3

SPEAKER OUT

8

R19

22R/0.5W

C6

103/M

PRO

D2

4148

R50

10K

C39

104P

C14

104P

CN7

E2

E1

PRO LED

PRO

CON4

3

4

1

2

PRO

LED1

PRO

R2

4.7K

Q22

C1815

Q23

D21

4148

C1815

R32

4.7K

R52

100K

R55

100K

CH2OUT

CH1OUT

PRO

D14

4148

C37

100U

Q4

C1815

R20

22R/0.5W

C7

103/M

R38

100

R40

100

R39

100

Q13

CET50N60

Q14

CET50N60

1

Q15

CET50N60

Q16

CET50N60

3

2

4

R41

100

T1

TRANC-1

Q5

C1815

D15

4148

C40

100U/25V

DC

5

7

6

FR104

FR104

D5

D6

8

FR104

FR104

D8

D9

C38

47U/50V

47U/50V

C55

C57

104P

C56

104P

R62

270/2W ZD4

15V1W

ZD6

15V1W

R63

270/2W

C42

220U/25V

C41

220U/25V

C47

104P

C10A

100U50V

C48

104P

V+

V-

R46

22/0.5W

D12

U1620R

D10

U1620

1

L4A

1MH

C31

330U/35V

C32

330U/35V

1

L6A

1MH

C58

2200U/35V

2

2

C59

2200U/35V

3C

104P

4C

104P

1C

2C

CL104

CL104

-VCC

+VCC

AC

DESCRIPTON

2 3 4

14

ECN NO

DESCRIPTON

5

APPROVED DATA

6

PART NAME:

POWER

PRODUCT MODE:

JBL GTO752

SCALE: 1:1

UNIT: MM

SIZE: A4

REV: PV

7

DRAWN BY:

CHECKED BY:

APPROVED BY:

8

DW GNO:

PART NO:

DATA:

DATA:

DATA:

D

C

B

A

C

B

D

A

GTO752

1 2 3 4

R7

18K

C4

104

D20

4148

C1

47/25V

ZD1

15V

R1

10K

ZD2

3V9

R14

5K6

R8

NC

R25

100k

R10

100

Q2

C1815

R13

3K

+12

Q6

B649

+12V

CN1

CON4

3

4

1

2

REM

DC12V

12V

GND

D2

C3

1U/50V

Q10

A1015

R53

15K

R26

4148

PRO

R5

6K8

R28

1K

Q9

A1015

R30

1K

R18

22K

Q3

C1815

R17

220R

R3

R23

10K

R24

12K

TL494CN

U1 TL494

R29

1K

Q8

A1015

R31

1K

D3

R4

100K

D13

4148

4148

R65

33K

R51

6K8

C25

104

R27

11K

C26

102/M

R9

22K

C27

100/25V

R12

100K

PRO

3

4

1

2

E2

E1

PRO LED

PRO

+12

R15

1K

Q7

C1815

ECN NO DESCRIPTON

1 2

15

APPROVED DATA

3

PART NAME:

POWER1

PRODUCT MODE:

JBL GTO752

SCALE: 1:1

UNIT: MM

SIZE: A4

REV: PV

DRAWN BY:

CHECKED BY:

APPROVED BY:

4

DW GNO:

PART NO:

DATA:

DATA:

DATA:

D

C

B

A

D

GTO752

1 2 3 4

+VCC

+VCC

C

CH1SG

CH1SG

MUTE

MUTE

R6B

10K

Q8B

S8050

B

R12B

100R

C1B

W10U/50V

R7B

10K

C6B

471

R1B

1K

R3B

47R

Q4B

2N5401

Q1B

C1815

R13B

22R

R27B

1K

R9B

5K6

V-

Q2B

C1815

C2B

100/100V

R16B

22R

R14B

22R

R8B

5K6

R28B

1K

Q9B

A1015

V+

C11B

22U

R15B

22R

Q10B

A1015

R17B

1K

R18B

3K3

C3B

100/100V

R19B

5K6

Q11B

2N5551

Q3B

A13

R2B

1K

R4B

47R

C4B

391/100V

Q5B

D667

Q6B

TIP35C

R24B

820R

PRO

PRO

R5B

10K

Q7B

C1815

D

C5B

391/100V

Q12B

B647

R20B

220R 1/4W

Q13B

TIP36C

1

R22B

0.10/5W

C9B

1U/50V

R23B

820R

D1B

4148

R10B

10K

R11B

10K

R56B

56K

CH1OUT

CH1OUT

DC

R25B

4.7/0.5W

C

C10B

CL104

B

-VCC

-VCC

R26B

5K6

ECN NO DESCRIPTON

A

1 2

16

APPROVED DATA

3

PART NAME:

AMP-1CH

PRODUCT MODE:

JBL GTO752

SCALE: 1:1

UNIT: MM

SIZE: A4

REV: 1.0

DRAWN BY:

CHECKED BY:

APPROVED BY:

4

DW GNO:

PART NO:

DATA:

DATA:

DATA:

A

D

B

GTO752

1 2 3 4

+VCC

+VCC

C

CH2SG

CH2SG

MUTE

MUTE

R6C

10K

Q8C

S8050

R12C

100R

C1C

W10U/50V

R7C

10K

C6C

471

R1C

1K

R3C

47R

Q4C

2N5401

Q1C

C1815

R13C

22R

R27C

1K

R9C

5K6

V-

Q2C

C1815

C2C

100/100V

R16C

22R

R14C

22R

R8C

5K6

R28C

1K

Q9C

A1015

V+

C11C

22U

R15C

22R

Q10C

A1015

R17C

1K

R18C

3K3

C3C

100/100V

R19C

5K6

Q11C

2N5551

Q3C

A13

R2C

1K

R4C

47R

C4C

391/100V

Q5C

D667

Q6C

TIP35C

R24C

820R

PRO

PRO

R5C

10K

Q7C

C1815

D

C5C

391/100V

Q12C

B647

R20C

220R 1/4W

Q13C

TIP36C

1

R22C

0.10/5W

C9C

1U/50V

R23C

820R

D1C

4148

R10C

10K

R11C

10K

R56C

56K

CH2OUT

CH2OUT

DC

R25C

4.7/0.5W

C

C10C

CL104

B

-VCC

-VCC

R26C

5K6

ECN NO DESCRIPTON

A

1 2

17

APPROVED DATA

3

PART NAME:

AMP-2CH

PRODUCT MODE:

JBL GTO752

SCALE: 1:1

UNIT: MM

SIZE: A4

REV: PV

DRAWN BY:

CHECKED BY:

APPROVED BY:

4

DW GNO:

PART NO:

DATA:

DATA:

DATA:

A

D

C

B

A

1

1

GTO752

2 3 4 5

C200

W22U/50V

R200

10K

C218

100P

INPUT

CH1-in

FR

C216

1

R201

22K

C201

W22U/50V

C214

CC10P

R202

10K

2

U201A

NJM4558 3

C219

100P

R207

R208

10K

C220

10K

100P

1

FR

R224

4K7

C225

100P

R210

4K7

R231

300R

3

3

2

U202A

NJM4558

1

VR200A B20K

C227

10P

1

R314

10K

R312

10K

6

5

R313

10K

V-

V+

7

CH1

U302B

NJM4558

FR

R320

56K

3

2

R221 56K

C223

U200A

NJM4558

1

100/P

R226

1K

C211

W22U/50V

Output

3

R216

100K

C130A

100/P

R-OUT

C224 100/P

10K

R209

INPUT

FL

CH2-in

C217

5

C206

W22U/50V

R204

22K

C207

W22U/50V

R203

10K

C215

CC10P

R205

10K

U201B

NJM4558

6

5

C221

100 P

R211

10K

-V

+V

FL

7

R229

4K7

C222

100P

R230

4K7

R241

300R

6

5

6

+V

-V

U202B

NJM4558

VR200B B20K

4

7

R316

10K

R315

3

10K

2

U302A

NJM4558

1

FL

CH2

R323

56K

R222 56K

6

5

-V

+V

R227

1K

C212

W22U/50V

7

U200B

NJM4558

R217

100K

Output

7

C130B

100/P

L-OUT

6

D

CH1

CH1

R100

22K

C100A

22P

R100A

10K

2

3

R101A 10K

U100A

1

4558

1

R103A

10K

3 2

3

C103A

CL823

U101A

7 1

VR100AC

A50K

4558

9

R116A

5.6K

2

3

U102A

4558

1

LPF 1

FLAT 3

SW100AA

2

R105A

220R

HPF 4

R104A

10K

U103A

3

C108A

22P

2

4558

C106

124

R106A

47K

VR101A

1

2

B5K

R127

27K

R119A

1K

CH1SG

-V

R106

1K

LED2

LED

CH2

CH2

R101

22K

R108A 10K

R107A

10K

6

5

4558

-V

U100B

4 7

VR100AB

A50K

6

R117A

6

5

+V

C104A

CL823

4558

+V

10 7

VR100AD

A50K

R118A

12 6

5

C105A

CL823

4558

+V

2 3

7

18

LPF 5

FLAT 7

HPF 8

SW100AB

6

R112A

R113A

10K

C109A

22P

6

C131

124

4558

-V

C130

563

VR101B

R114A

47K

5

5

R128

27K

B5K

ECN NO

DESCRIPTON

7

R120A

1K

APPROVED DATA

CH2SG

4

R111

1K

+V

PART NAME:

PRE

PRODUCT MODE:

JBL GTO752

5

SCALE: 1:1

UNIT: MM

SIZE: A4

REV: 1.0

C209

104P

C202

104P

C205

104P

C203

10P

C208

DRAWN BY:

CHECKED BY:

APPROVED BY: zeng xin hua

6

DW GNO:

PART NO:

DATA:

2007/07/17

DATA:

DATA:

A

C

B