JBL Grand Touring GTO75.2 User manual

GTO752
2 CHANNEL POWER AMPLIFIER
SERVICE MANUAL
JBL Consumer Products
250 Crossways Park Dr.
Woodbury, New York 11797 Rev11/2008
Released 2007
Discontinued XXXX

- CONTENTS -
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
GTO 752 Specifications
Output Power: 75W RMS x 2 channels @ 4 ohms; ≤1% THD + N
(14.4V supply) 110W RMS x 2 channels @ 2 ohms; ≤1% THD + N
200W RMS x 1 channel (bridged) @ 4 ohms; ≤1% THD + N
Signal-to-noise ratio: 90dBA (reference 1W into 4 ohms)
108dBA (reference rated power into 4 ohms)
Dynamic power: 130W @ 2 ohms
Frequency response: 10Hz – 100kHz (–3dB)
THD+N 1KHz LPF=22KHz ≤0.07% (rated power @ 4 ohms)
Channel Separation ≥45db (full rated power)
Input Impedance >20K ohms
Maximum input signal: 6.0V
Maximum sensitivity: 100mV
Hi-Pass, Low Pass X-over Limits 40Hz – 450Hz ±20%
Bass Boost @ 50Hz 0-6dB
DC Offset <30mV
Output regulation: .03dB @ 4 ohms
Idle Current @ 4 ohms 0.5A
Max Current Draw <30A @ 2 ohms both channels driven
Remote Operating Voltages ON 5V OFF 4V
Turn-on delay time 2-3 sec
Circuit Protection Temperature (80±5C), Short circuit
Operating voltage range (8-16V)
Dimensions: 12 1/4 x 10 3/8 x 2 1/8” (310 x 263 x 53mm)
Fuses: 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.
GTO752
1

GTO752
2

1x
4x 1x
012
8
765
93A
ABCDE
A
B
C
12-1/4"
310mm
10-3/8"
263mm
2-1/8"
53mm
4
C
B
3
GTO752

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
0Speaker 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.
1Fuses
•Replace only with the same type and rating.
2Power 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.
•REM: Connect to the “Remote Out” lead from
the source unit or to a source of switched
12V+ (ACC).
3Aux Output Connectors (RCA)
•Nonfiltered pass-through output. Connect
to the input of an additional amplifier.
4Input Connectors (RCA)
•Connect to the RCA outputs from the source unit
or signal processor.
5Input-Level Control
•Used to match the input level of the amplifier
to the output level of the source unit.
•See Bfor the adjustment procedure.
6Front Crossover-Frequency Control
•12dB/octave crossover, variable from
32Hz to 320Hz.
•See Cfor the adjustment procedure.
7Crossover-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.
8Bass-Boost Control
•Set the Bass-Boost control according to your
preference, being careful not to apply
enough boost to damage your speaker(s).
9Power On LED
•Illuminated when the amplifier is on.
AProtect 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).
BSetting Input Level
ATurn Input-Level control counterclockwise to
6V (minimum).
BWith a dynamic music track playing, turn the
head unit’s volume control to the 3/4 position.
CTurn Input-Level control clockwise until the
music is so loud that it no longer sounds clear
(distortion is present in the output).
DTurn Input-Level control counterclockwise
gradually, just until the music sounds clear,
once again.
EInput level is now adjusted correctly.
CSetting the Crossover
ACrossover setting for 5" or larger full-range
speakers when no subwoofer is included in
the system.
BCrossover setting for midrange and/or
full-range speakers when a subwoofer
is included in the system.
CCrossover setting for subwoofers.
Note: Acceptable frequency ranges are indicated
in gray.
GTO752 CAR AUDIO POWER AMPLIFIER OWNER’S MANUAL
Factory Bolt Ring Connector
Ground Wire
Note: Remove any paint
below ring connector.
Star Washer
This product is designed for mobile applications and is not
intended for connection to the mains.
Avalid serial number is required for warranty coverage.
Features, specifications and appearance are subject to change
without notice.
4
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

Trans. Clamp
Trans. Clamp
Trans. Clamp
Front Plate
RCA Cap (Red)
RCA Cap (Wht)
Standoff
1380-0206-00
EXPLODED VIEW
6
GTO752
Part Number Part Number

123456
A
B
C
D
654321
D
C
B
A
INPUT L
AUX OUT L
AUX OUT R
INPUT R
OP
OP
OP
OP
1 3
2
A
1 3
2
A
OP
OP
10 100K32 320
MODE HP/FLAT/LP
VARIABLE LPF/HPF
32Hz-320Hz/12dB
10 100K32 320
MODE HP/FLAT/LP
VARIABLE LPF/HPF
32Hz-320Hz/12dB
10 100K50
10 100K50
BASS BOOST
VARIABLE
0dB-6dB/50Hz
BASS BOOST
VARIABLE
0dB-6dB/50Hz
AMP
AMP
MAIN AMP
FRONT L
MAIN AMP
FRONT R
4 ohm/2 ohm
4 ohm/2 ohm
speaker
speaker
speaker
BTL-4ohm
power supply Battery
+VCC
-VCC
+15V
-15V
BLOCK DIAGRAM
7
GTO752

GTO752 Electrical Parts List
Part Number Qty Reference Designator
MAIN PCB
Resistors
0702-34R7-02 Resistor 1/2W 4.7Ω±5% 2 R25B R25C
0702-3220-02 Resistor 1/2W 22Ω±5% 3 R46 R20 R19
0702-2221-02 Resistor 1/4W 220Ω±5% 2 R20B R20C
0702-1220-02 Resistor 1/8W 22Ω±5% 8 R16C R16B R15C R15B R14C R14B R13B R13C
0702-1470-02 Resistor 1/8W 47Ω±5% 4 R4B R3C R4C R3B
0702-1101-02 Resistor 1/8W 100Ω±5% 6 R38 R39 R40 R41 R12B R12C
0702-1821-02 Resistor 1/8W 820Ω±5% 4 R24C R23C R24B R23B
0702-1102-02 Resistor 1/8W 1KΩ±5% 16 R227 R226 R119A R17C R17B R2C R2B R1C R1B
R120A R111 R106 R28C R27B R27C R28B
0703-1332-03 Resistor 1/8W 3.3KΩ±1% 2 R18C R18B
0702-1562-02 Resistor 1/8W 5.6KΩ±5% 10 R9C R9B R8B R8C R118A R117A R116A R115A R19C
R19B
0702-1472-02 Resistor 1/8W 4.7KΩ±5% 3 R2 R32 R37
0702-1103-02 Resistor 1/8W 10KΩ±5% 22
R113A R108A R107A R104A R101A R100A R50 R36
R11C R11B R10C R10B R7C R7B R6C R6B R5C R5B
R110A R103A R1 R4D
0702-1473-02 Resistor 1/8W 47KΩ±5% 3 R34 R106A R114A
0702-1563-02 Resistor 1/8W 56KΩ±5% 6 R56B R56C R222 R221 R323 R320
0702-1104-02 Resistor 1/8W 100KΩ±5% 5 R52 R55 R43 R217 R216
0702-1221-02 Resistor 1/8W 220Ω±5% 2 R112A R105A
0702-1682-02 Resistor 1/8W 6.8KΩ±5% 2 R102A R109A
0702-1273-02 Resistor 1/8W 27KΩ±5% 2 R127 R128
0703-1301-03 Resistor 1/8W 300Ω±1% 2 R231 R241
0702-1223-02 Resistor 1/8W 22KΩ±5% 2 R101 R100
0703-1223-03 Resistor 1/8W 22KΩ±1% 2 R204 R201
0703-1103-03 Resistor 1/8W 10KΩ±1% 13 R316 R315 R314 R313 R312 R211 R209 R208 R207
R205 R203 R202 R200
0703-1472-03 Resistor 1/8W 4.7KΩ±1% 4 R229 R224 R230 R210
0703-1562-03 Resistor 1/8W 5.6KΩ±1% 2 R26C R26B
0705-50R1-06 Resistor 5W 0.1Ω*2 ±5% 26*5*18MM 2 R22C R22B
0704-6271-02 Resistor 2W 270Ω±5% 2 R63 R62
1204-2030-01 potentiometer B20K KQ L=15 ±15% (INPUT LEVEL) 1 VR200
1204-5031-18 potentiometer A50K R0971G2B W=5 KQ柄L=15MM
T=7.5MM M=1MM (FREQ) 1 VR100A
1204-5021-06 potentiometer B5K KQ L=15 ±10% 1,1" (BASS BOOST) 1 VR101
0703-2392-03 Resistor METAL MF 1/4W 3.9KΩ±1% 1 R45
Capacitors
06D212274001 Cap electro 220UF/25V ±20% 8*16 105℃2 C216 C217
06D212266010 Cap electro 22uF/50V ±20% 5*11 105℃11 C15 C200 C201 C206 C211 C212 C11C C11B C12C
C12B C207
06D212264103 Cap electro 220uF/25V ±20% 8*12 105℃2 C42 C41
06D213375101 Cap electro 330UF/35V ±20% Ф8*14MM 105℃2 C32 C31
06D214765000 Cap electro 47UF/35V ±20% 5*11 105℃2 C55 C38
06D211074100 Cap electro 100uF/25V ±20% 6.3*11 105℃4 C37 C7C C7B C40
06D202264109 Cap electro 22uF/25V ±20% 5*12 105℃1 C18
06D211066109 Cap electro 10uF/50V ±20% 5*11 105℃2 C1C C1B
06D211056001 Cap electro 1UF/50V ±20% 5*11 105℃2 C9C C9B
06D212285106 Cap electro 2200UF/35V ±20% 16*26MM 105℃2 C58 C59
06D213384003 Cap electro 3300UF/25Vφ18*26MM ±20% 105℃1 C17
06D321037200 Capacitor 103/100V ±5% 2 C7 C6
06D321047200 Capacitor 104/100V ±5% 6 2C 1C C8C C8B C10B C10C
06D321027200 Capacitor 102/100V ±5% 1 C29
06D321247000 Capacitor 124/100V ±5% 2 C131 C106
06D325637000 Capacitor 563/100V ±5% 2 C130 C107
Description
GTO752
8

Part Number Qty Reference Designator
Description
MAIN PCB
06D328237200 Capacitor 823/100V ±5% 4 C104A C105A C102A C103A
06D232207000 porcelin Cap 22pF/100V ±20% 4 C101A C100A C109A C108A
06D231007001 porcelin Cap 10PF/100V ±20% 105℃4 C227 C226 C215 C214
06D231017000 porcelin Cap 100pF/100V ±20% 14 C225 C222 C221 C220 C219 C218 C3C C3B C2C C2B
C223 C224 C103A C103B
06D233917000 Capacitor 391/100V ±20% 4 C5C C4C C5B C4B
06D234717001 porcelin Cap 470PF/100V ±20% 2 C6C C6B
06D231047000 porcelin Cap 0.1uF/100V ±20% 17 C9 C208 C205 C203 C202 C48 C47 C39 C14 C8 C56
C57 3C 4C C30 C28 C209
06D211076001 Cap electro 100UF/50V ±20% 8*12 105℃5mm 1 C10A
Semiconductors
04WY-51AV104 diode schottky 5.1V DO-35 0.5W 1 ZD2
04WY-15BV204 diode schottky 15V DO-35 1W 2 ZD6 ZD4
04PT-4148-04 diode 1N4148 GSS 200MA 75V DO-35 10 D21 D15 D14 D11 D2C D2B D2 D1C D1B D1
04ZL-5401-06 diode 1N5401 DO-201AD 1 D7
03N2-8050-01 Transistor 2SC8050 NPN TO-92 2 Q8C Q8B
03P1-1015-01 Transistor 2SA1015 150MA 60V 400MW PNP TO-
92 4 Q9C Q10C Q9B Q10B
03N1-1815-01 Transistor 2SC1815GR 150MA 60V 400MW NPN
TO-92 10 Q23 Q22 Q7C Q7B Q5 Q4 Q2C Q2B Q1C Q1B
03P1-5401-01 Transistor 2N5401 PNP TO-92 2 Q4C Q4B
03P1-B647-01 Transistor 2SB647 1A 120V 0.9W PNP TO-92 2 Q12C Q12B
03N1-5551-01 Transistor 2N5551 NPN TO-92 2 Q11C Q11B
03N1-SA13-01 Transistor MPSA13 0.5A 30V NPN TO-92 2 Q3C Q3B
03N1-667A-01 Transistor 2SD667AC 1A 120V 0.9W NPN TO-92 2 Q5C Q5B
03P1-1023-01 Transistor 2SA1023 TO-92 PNP 1 Q19
03N1-35CW-26 Transistor TIP35CW NPN T0-247 2 Q6C Q6B
03P1-36CW-26 Transistor TIP36CW PNP T0-247 2 Q13C Q13B
04GS-R104-00 diode FR104 1A 400V 52MM 5 D9 D8 D6 D5 D3
03D1-50N6-24 MOS Transistor HFP50N06 TO-220 4 Q14 Q16 Q15 Q13
2202-1602-05 Rectifier UF1602CT AKA 16/200V TO-220 1 D10
2202-1620-05 Rectifier MUR1620CTA KAD 16A/200V TO-220 1 D12
2000-0017-00 LED red with red light Φ3MM 2P (PROTECT) 1 LED1
2004-0014-00 LED Φ3.0MM blue with blue light (POWER) 1 LED2
01JR-4558-02 IC NJM4558 SIP-8 Dual Op-Amp 8 U103 U302 U202 U201 U200 U100 U102 U101
Miscellaneous
1501-0300-02 terminal BTS3-24 POWER 1 CN1
1501-0400-01 terminal BTS4-23 SPEAKER 1 CN3
1601-303G-00 fuse 30A/32V DC 1 F1
1401-0004-00 fuse holder BXS-09 1 for F1
1001-0003-10 inductor φ11 φ0.8 2 L6 L4
1005-5R00-10 toroidal inductor 5uH Φ23 Φ1.2*3 7T 1 L1
1380-0206-00 tem switch 80℃KSD301 1 attach to heat sink
3000-GTO7-01 Transformer φ376:13 L1=L2 0.8*8*6TS L3=L4
0.8*5*13TS 1T1
1404-0020-04 RCA JACKS AV4-8.4-38 QUAD 1 RCA200
1501-0209-00 Molex socket Pitch 2.54MM 2PIN 2 CN4 CN5
1333-0204-00 slide switch SSH-23D04-2P3T L:9MM
(LPF/FLAT/HPF) 1 SW100
PL-L0002-000 sheet GND GND-3 1 JK1
Miscellaneous
2100-0069-02 wire 2PIN UL1007 AWG26 L=35mm 2.54 5mm 1
JD-E00020515 insulator 5*10*10MM 35° black 2 for MPSA13
PL-A0051-000 Alum. Bar with Insulated paper 1 14.0x7.0x30.0
GTO752
9

Part Number Qty Reference Designator
Description
MAIN PCB
PL-A0050-000 Alum. Bar with Insulated paper 2 14.0x7.0x40.0
PL-A0049-000 Alum. Bar with Insulated paper 1 14.0x7.0x60.0
PWM PCB
Resistors
0701-2221-03 SMD resistor SMD 220Ω1/8W ±1% 0805 1 R17
0701-2101-03 SMD resistor SMD 100Ω1/8W ±1% 0805 1 R10
0701-2102-03 SMD resistor SMD 1KΩ1/8W ±1% 0805 6 R31 R30 R29 R28 R26 R15
0701-2302-03 SMD resistor SMD 3KΩ1/8W ±1% 0805 1 R13
0701-2472-03 SMD resistor SMD 4.7KΩ1/8W ±1% 0805 1 R11
0701-2682-03 SMD resistor SMD 6.8KΩ1/8W ±1% 0805 2 R5 R51
0701-2562-03 SMD resistor SMD 5.6KΩ1/8W ±1% 0805 1 R14
0701-2103-03 SMD resistor SMD 10K 1/8W ±1% 0805 2 R1 R23
0701-2113-03 SMD resistor SMD 11KΩ1/8W ±1% 0805 1 R27
0701-2123-03 SMD resistor SMD 12KΩ1/8W ±1% 0805 1 R24
0701-2153-03 SMD resistor SMD 15KΩ1/8W ±1% 0805 1 R53
0701-2183-03 SMD resistor SMD 18KΩ1/8W ±1% 0805 1 R7
0701-2223-03 SMD resistor SMD 22KΩ1/8W ±1% 0805 2 R18 R9
0701-2333-03 SMD resistor SMD 33KΩ1/8W ±1% 0805 1 R65
0701-2334-03 SMD resistor SMD 330KΩ1/8W ±1% 0805 1 R3
0701-2104-03 SMD resistor SMD 100KΩ1/8W ±1% 0805 3 R25 R12 R4
0701-3102-02 resistor SMD 1KΩ1/4W ±5% 1206 8 R1 R2 R3 R4 R5 R6 R7 R8
Capacitors
06D211054104 Cap electro 1uF/25V ±20% 4*7 105C 1 C3
06D211074101 Cap electro 100UF/25V 6.3*7mm 5mm ±20% 105C 1 C27
06D212273001 Cap electro 220UF/16V ±20% 8*7 105C 5MM 1 C22
06D214764103 Cap electro 47UF/25V ±20% 6*7 105C black 5mm 2 C1 C20
06S321026000 SMD Capacitor SMD 1000pF/50V 0805 NPO ±5% 1 C26
06S121046000 SMD Capacitor SMD 0.1uF/50V 0805 X7R ±10% 2 C4 C25
Semiconductors
04WY-39AV101 diode schottky SMD 3.9V DO-213AA 0.5W 1 ZD2
04WY-15BV-01 diode schottky SMD 15V 1/2W ±2% DO-213AA 1 ZD1
04PT-4148-01 diode SMD 1N4148 DO-213AA 6 D4 D1 D20 D3 D2 D13
03P1-1015-04 Transistor SMD 2SA1015 SOT-23 PNP 1 Q10
03P1-B649-07 Transistor 2SB649A 1.5A 180V 20W PNP TO-126 1 Q6
03N1-1815-04 Transistor SMD 2SC1815 SOT-23 NPN 4 Q3 Q2 Q7 Q1
01TI-L494-09 IC SMD TL494C SO-16 PWM 1 U1
03P1-1015-01 Transistor 2SA1015 150MA 60V 400MW PNP TO-92 2 Q9 Q8
Miscellaneous
1501-0409-02 socket PITCH 2.54mm 4PIN 90° 2 CN2 CN1
LED PCB
2100-0067-02 wire 2PIN UL1007 AWG26 L=70mm 5mm high
temperature 105Cwire 2
2100-0068-02 wire 2PIN UL1007 AWG26 L=210mm 2.54
5mm,high temperature105Cwire 1
2005-0009-00 guide light LED 2*3*4mm、8 LED1 LED2 LED3 LED4 LED5 LED6 LED7 LED8
06S121046000 SMD Capacitor SMD 0.1uF/50V 0805 X7R ±10% 1 C1
GTO752
10

GTO752
11

12
GTO752

13
GTO752

1 2 3 4 5 6 7 8
A
B
C
D
87654321
D
C
B
A
C29
102/M
R46
22/0.5W
C31
330U/35V
C32
330U/35V
D7
IN5401
1
2
3
CN1
R40
100
R38
100
R41
100
R39
100
C10
NC
C19
NC
PGND
REM
+12V
C14
104P
R50
10K
C39
104P
MUTE
C40
100U/25V
CH2OUT
Q4
C1815
Q5
C1815
R19
22R/0.5W C6 103/M
V+
V-
+VCC
-VCC
D10
U1620
D12
U1620R
Q13
CET50N60 Q15 CET50N60
Q14
CET50N60 Q16 CET50N60
R20
22R/0.5W
C7
103/M
C17
W3300U/25V
CH1OUT
C42
220U/25V
C41
220U/25V
C47
104P
C48
104P
MUTE
DW GNO:
PART NO:
PART NAME:
PRODUCT MODE:
SCALE: 1:1
UNIT: MM
SIZE: A4
REV: PV
DRAWN BY:
CHECKED BY:
APPROVED BY:
DATA:
DATA:
DATA:
POWER
JBL GTO752
C8
104P
C15
22uF/50V
R34
47K
R36
10K
D3
FR104
R37
4.7K
C18
22uF/25VNP
R43
100K
104P
C9
Q19
A1023
R45
3.9K1/4W
AC
C58
2200U/35V
C59
2200U/35V
D5FR104
D6
FR104
D8
FR104
D9
FR104
C38
47U/50V
C55
47U/50V C56
104P
C57
104P
6
655
F1C
30A
R62
270/2W
R63
270/2W
SPEAKER OUT
D11
IN4148
D14
4148 D15
4148
C28
104/P
C30
104/P
1 2
L4A
1MH
1 2
L6A
1MH
+12V
2C
CL104
1C
CL104
3C
104P
4C
104P
DC
12 L1A
5UH
PRO
1
2
3
4
CN3
CN3
ZD6
15V1W
ZD4
15V1W
D1
IN4148
V-
AC
2
4
8
6
5
1
3 7
T1
TRANC-1
R52
100K
R55
100K
C37
100U
R32
4.7K
D21
4148
Q23
C1815
Q22
C1815
D2
4148
PRO
CH2OUT
CH1OUT
1
2
3
4
CN6
CON4
1
2
3
4
CN7
CON4
REM
DC12V
12V
GND
E2
E1
PRO LED
PRO PRO
+12
+12V
LED1
PRO R2
4.7K
ZD2
5.1V
R4D
10K
DESCRIPTON
+12
1
2
CN5
CON2.54*2
1
2
CN4
CON2.54*2
PRO
R1
10K1
2
CN4
CON2.54*2
RT1
80℃
1
2
CN5
CON2.54*2
R8
1K
R7
1K
R6
1K
R5
1K
R4
1K
R3
1K
R2
1K
R1
1K
LED8
LED
LED7
LED
LED6
LED
LED5
LED
LED4
LED
LED3
LED
LED2
LED
LED1
LED
C10A
100U50V
ECN NO DESCRIPTON DATAAPPROVED
CA2
NC
CA1
NC
14
GTO752

1 2 3 4
A
B
C
D
4321
D
C
B
A
+
1
-
2
FED
3
DT
4
C
5
R
6
GND
7
OP1
8
+16
-15
REF 14
CON 13 VCC 12
OP2 11
E2 10 E1 9
TL494CN U1 TL494
R27
11K
R9
22K
C26
102/M C27 100/25V
Q10
A1015
R53
15K
C3
1U/50V
PRO R30
1K
R31
1K
R28
1K
R29
1K
Q3
C1815
R17
220R
C25
104
Q2
C1815
R10
100
R11
4.7K
R13
3K
C2
NC
Q6
B649
C1
47/25V
R1
10K R8 NC
R26
1K
R4
100K
R24
12K
R23
10K
R12
100K
C22
220/16V
R18
22K
R5
6K8
R3
330K
R51
6K8
R15
1K
+12
Q1
C1815
R7
18K
DW GNO:
PART NO:
PART NAME:
PRODUCT MODE:
SCALE: 1:1
UNIT: MM
SIZE: A4
REV: PV
DRAWN BY:
CHECKED BY:
APPROVED BY:
DATA:
DATA:
DATA:
POWER1
JBL GTO752
R65
33K
C20
47/16V
D1
4148
D13
4148
D2
4148
D3
4148
D4
4148
ZD1
15V
ZD2
3V9
+12V
+12
D20
4148
R25
100k
R14
5K6
1
2
3
4
CN1
CON4
1
2
3
4
CN2
CON4
PRO
REM
DC12V
12V
GND
E2
E1
PRO LED
PRO
Q9
A1015
Q8
A1015
C4
104
ECN NO DESCRIPTON DATAAPPROVED
Q7
C1815
15
GTO752

1 2 3 4
A
B
C
D
4321
D
C
B
A
Q1B
C1815 Q2B
C1815
R13B
22R R16B
22R
R8B
5K6
R1B
1K
V+
Q9B
A1015 Q10B
A1015
R14B
22R R15B
22R
R9B
5K6
R2B
1K
V-
Q4B
2N5401
Q11B
2N5551
1 2
R3B
47R
R4B
47R
Q3B
A13
R18B
3K3
R19B
5K6
C2B
100/100V
C3B
100/100V
C8B
CL104
C7B
100U/25V
R17B
1K
Q5B
D667
Q12B
B647
Q6B
TIP35C
Q13B
TIP36C
R24B
820R
R23B
820R
Q7B
C1815
R10B
10K
C9B
1U/50V
PRO
R25B
4.7/0.5W
C10B
CL104
R12B
100R
R7B
10K
C6B
471
MUTE
CH1SG
R26B
5K6
C1B
W10U/50V
R6B
10K
CH1OUT
R5B
10K
PRO
+VCC
-VCC
CH1OUT
MUTE
CH1SG
R20B
220R 1/4W
R11B
10K
Q8B
S8050
+VCC
-VCC
23
1
R22B
0.10/5W
C4B
391/100V
C5B
391/100V
DW GNO:
PART NO:
PART NAME:
PRODUCT MODE:
SCALE: 1:1
UNIT: MM
SIZE: A4
REV: 1.0
DRAWN BY:
CHECKED BY:
APPROVED BY:
DATA:
DATA:
DATA:
AMP-1CH
JBL GTO752
D2B
4148
D1B
4148
R56B
56K DC
R27B
1K
R28B
1K
C12B
22U
C11B
22U
ECN NO DESCRIPTON DATAAPPROVED
16
GTO752

1 2 3 4
A
B
C
D
4321
D
C
B
A
Q1C
C1815 Q2C
C1815
R13C
22R R16C
22R
R8C
5K6
R1C
1K
V+
Q9C
A1015 Q10C
A1015
R14C
22R R15C
22R
R9C
5K6
R2C
1K
V-
Q4C
2N5401
Q11C
2N5551
R3C
47R
R4C
47R
Q3C
A13
R18C
3K3
R19C
5K6
C2C
100/100V
C3C
100/100V
C8C
CL104
C7C
100U/25V
R17C
1K
Q5C
D667
Q12C
B647
Q6C
TIP35C
Q13C
TIP36C
R24C
820R
R23C
820R
Q7C
C1815
R10C
10K
C9C
1U/50V
PRO
R25C
4.7/0.5W
C10C
CL104
R12C
100R
R7C
10K
C6C
471
MUTE
CH2SG
R26C
5K6
C1C
W10U/50V
R6C
10K
CH2OUT
R5C
10K
PRO
+VCC
-VCC
CH2OUT
MUTE
CH2SG
R20C
220R 1/4W
R11C
10K
Q8C
S8050
+VCC
-VCC
23
1
R22C
0.10/5W
C4C
391/100V
C5C
391/100V
DW GNO:
PART NO:
PART NAME:
PRODUCT MODE:
SCALE: 1:1
UNIT: MM
SIZE: A4
REV: PV
DRAWN BY:
CHECKED BY:
APPROVED BY:
DATA:
DATA:
DATA:
AMP-2CH
JBL GTO752
D2C
4148
D1C
4148
R56C
56K DC
R27C
1K
R28C
1K
C12C
22U
C11C
22U
ECN NO DESCRIPTON DATAAPPROVED
17
GTO752

123456
A
B
C
D
654321
D
C
B
A
R105A
220R
R104A
10K
23
1
4
SW100AA
R119A
1K
R100A
10K
C100A
22P R103A 10K
R101A 10K
R115A
5.6K
C102A
CL823
R116A
5.6K
C103A
CL823
R102A
6.8K
1 3
2
VR100AA
A50K
4 6
5
VR100AB
A50K
LPF
FLAT
HPF
C108A
22P
CH1
R106A
47K
R112A
220R
67
5
8
SW100AB
R120A
1K
R107A
10K
C101A
22P R110A 10K
R108A 10K
R117A
5.6K
C104A
CL823
R118A
5.6K
C105A
CL823
R109A
6.8K
7 9
8
VR100AC
A50K
10 12
11
VR100AD
A50K
LPF
FLAT
HPF C109A
22P
CH2
R114A
47K
R113A
10K
CH1
CH2
DW GNO:
PART NO:
PART NAME:
PRODUCT MODE:
SCALE: 1:1
UNIT: MM
SIZE: A4
REV: 1.0
DRAWN BY:
CHECKED BY:
APPROVED BY:
DATA:
DATA:
DATA:
PRE
JBL GTO752
C106
124
C107
563
R127
27K
+V
-V
C131
124
C130
563
R128
27K
LED2
LED
R111
1K
R106
1K
+V
-V
46
5
VR101B
B5K
13
2
VR101A
B5K
R100
22K
R101
22K
3
21
U100A
4558 3
21
U101A
4558 3
21
U102A
4558
5
67
8 4
U100B
4558
5
67
8 4
U101B
4558 5
67
8 4
U102B
4558
-V
+V
-V
+V
3
21
U103A
4558
5
67
84
U103B
4558 -V
+V
CH2SG
CH1SG
C205
104P C208 104P
C209
104P
C203
10P
C202
104P
V+
R207 10K
R201
22K
C216
220U/25VNP
C218
100P
R208
10K
R200
10K
INPUT
C200
W22U/50V
C214
CC10P
C219
100P
C201
W22U/50V R202 10K
R209
10K
R204
22K
C217
220U/25NP
C220 100P
R211
10K
R203
10K
INPUT C206
W22U/50V
C215
CC10P
C221
100 P
C207
W22U/50V R205
10K
-V
+V
3
21U201A
NJM4558
5
67
8 4
U201B
NJM4558
1
2
CH1-in
5
6
CH2-in
FL
FR
R224
4K7
R229
4K7
13
2
VR200A B20K
46
5
VR200B B20K
R210
4K7
R241
300R
R230
4K7
R231
300R
C227 10P
C222
100P
C225
100P
5
67
84
U202B
NJM4558
3
21
U202A
NJM4558
-V
+V
CH2
CH1
3
4
R-OUT
7
8
L-OUT
R323
56K
R320
56K
R221 56K
R222 56K
C224 100/P
C223 100/P
R226
1K
R227
1K
C211
W22U/50V
C212
W22U/50V
R217
100K
R216
100K
3
21
U200A
NJM4558
5
67
8 4
U200B
NJM4558
+V
-V
FR
FL
FR
FL
3
21
U302A
NJM4558
R314
10K
R312
10K
R313
10K
V-
V+
5
67
8 4
U302B
NJM4558
R315
10K
R316
10K
ECN NO DESCRIPTON DATAAPPROVED
zengxin hua 2007/07/17
C130A
100/P
C130B
100/P
Output
Output
18
GTO752