JBL GTO14001 User Manual
GTO 14001
1 CHANNEL POWER AMPLIFIER
SERVICE MANUAL
Released 2008
Discontinued XXXX
JBL Consumer Products
250 Crossways Park Dr.
Woodbury, New York 11797 Rev0 3/2008
1
GTO14001
- 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….………………………..…….……13
IC/TRANSISTOR PINOUTS..………………..….….…..20
SCHEMATICS……………..……………….………..…...21
GTO 14001 Specifications
Output Power: 1200W RMS x 1 channels @ 4 ohms; ≤1% THD + N
(14.4V supply) 1500W RMS x 1 channels @ 2 ohms; ≤1% THD + N
Signal-to-noise ratio: 77dBA (reference 1W into 4 ohms)
108dBA (reference rated power into 4 ohms)
Dynamic power: 1800W @ 2 ohms
Frequency response: 20Hz – 300Hz (–3dB)
THD+N 1KHz LPF=22KHz ≤0.05% (rated power @ 4 ohms)
Input Impedance >20K ohms
Maximum input signal: 6.0V
Maximum sensitivity: 100mV
Bass Boost @ 20-100Hz 0-12dB (±2dB)
DC Offset <30mV
Output regulation: .03dB @ 4 ohms
Idle Current @ 2 ohms 1.8A
Max Current Draw 140A @ 2 ohms
Remote Operating Voltages ON 5V OFF 3.5V
Turn-on delay time 2-3 sec
Circuit Protection Temperature (80±5C), Short circuit
Operating voltage range (8-16V)
Dimensions: 18 9/16 x 10 3/8 x 2 1/8” (470 x 263 x 53mm)
Fuses: (4) x 40A
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.
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GTO14001
9A
02
8
5 6
34
7
AB
ABCD
A
C
B
18-9/16"
470mm
10-3/8"
263mm
2-1/8"
53mm
8
1-5/8"
40mm
1"
25mm
D
4x
2x
4x
1x
1x
1x
1
3
GTO14001
Factory Bolt Ring Connector
G
round Wire
Note: Remove any paint
below ring connector.
Star Washer
4
GTO14001
GTO14001 CAR AUDIO SUBWOOFER 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
• 1200W RMS x 1 channel @ 4 ohms and ≤1% THD + N*
• 1500W RMS x 1 channel @ 2 ohms and ≤1% THD + N*
• THD + N: 0.05% (rated power @ 4 ohms)
• Signal-to-noise ratio: 77dBA
(reference 1W into 4 ohms)*
• Signal-to-noise ratio: 108dBA
(reference rated power into 4 ohms)
• Frequency response: 20Hz – 330Hz (–3dB)
• Max power: 1500 watts
* CEA-2006A-compliant
0
Speaker Output Connectors
• Connect the speakers to these terminals,
observing proper polarity. Either + or –
terminal may be used. Minimum total
impedance is 2 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. 4 AWG wire is recommended.
Install an appropriate fuse holder and fuse (160A
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).
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 Bfor the adjustment procedure.
6
Low-Pass Filter Frequency Control
• 12dB/octave low-pass filter,
variable from 32Hz to 320Hz.
• See Cfor the adjustment procedure.
7
DBO (Dynamic Bass Optimization) Variable
Subsonic High-Pass Filter With Variable Boost (Q)
• For woofers in tuned (vented) enclosures, set
the Frequency control to a value 10Hz below the
enclosure’s resonance (tuned) frequency.
• For woofers in sealed boxes, set the control to
any value you prefer, between 30Hz and 50Hz.
• Set the Boost control according to your
preference, being careful not to apply
enough boost to damage your woofer(s).
A DBO High-Pass Filter Frequency control,
variable between 10Hz and 100Hz. See
above for appropriate settings.
B DBO Boost control provides up to
12dB of boost, slightly above the highpass filter’s frequency. See above for
appropriate settings.
8
Remote Level Control (RLC) Connector
• Connect the Remote Level Control (RLC) here,
using the supplied RJ-11 cable.
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 (minimim).
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
bass output is proportionate to the output of
the high-frequency speakers, according to
your preference.
D Input level is now adjusted correctly.
C
Setting the Crossover
A Crossover setting for subwoofers.
Note: Acceptable frequency ranges are indicated
in gray.
D
Remote Level Control
The Remote Level Control, if installed, will allow
you to adjust the level of bass while seated in the
listening position.
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GTO14001
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 ampli fier.
Verify:
A. RCA cables ar e o f good quality wit h no bre ak a ge to i nternal shiel ds
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
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GTO14001
Trans. Clamp
Trans. Clamp
Trans. Clamp
RCA CAP (Red)
RCA CAP (Wht)
Front Plate
Standoff
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GTO14001
BALANCED
INPUT L
1
2
OUTPUT L
OUTPUT R
INPUT R
1
2
INPUT UNIT
OP
GAIN CONTROL
OP
OP
OP
Block Diagram GTO14001
LP FREQ
VARIABLE
32Hz-320Hz/12dB
32 320Hz80 32 320Hz50
OP
BASSBOOST
VARIABLE
0dB-12dB/50Hz
MAIN AMP
AMP
2 ohm/4 ohm
SPEAKER
2 ohm/4 ohm
BALANCED
INPUT UNIT
OP
IMS INPUT
UnRegistered
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