Installation Warnings And Tips; Speaker Output Connectors; Fuse Holder/+12V Connection; Power Input Connectors - JBL GTO 24001 Service Manual

GTO24001
GTO24001 CAR AUDIO SUBWOOFER AMPLIFIER

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
• 1700W RMS x 1 channel @ 4 ohms and ≤1% THD + N*
• 2400W RMS x 1 channel @ 2 ohms, 14.4V supply and
< 1% THD + N*
• Frequency response: 20Hz – 330Hz (–3dB)
• Maximum input signal: 6V*
• Maximum sensitivity: 200mV*
• THD + N: 0.5%
• Signal-to-noise ratio: 65dBA
(reference 1W into 4 ohms)*
• Signal-to-noise ratio: 97dBA
(reference rated power into 4 ohms)
* 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 Fuse Holder/+12V Connection

• Replace fuse only with the same type and rating.
• Mount the fuse holder within 18" of the vehicle's
battery, inside the engine compartment and
connect one end of the fuse holder to the
battery's "+" terminal using a single piece of
0 gauge wire as shown in diagrams 2a and 2b.
• For normal installation, connect two pieces of
4 gauge wire to the other end of the fuse holder
as in diagram 2a. Route both pieces of 4 gauge
wire through the car, using rubber grommets in
all locations where the wire must pass through
metal. Connect the other end of the 4 gauge
wire to the two "+" terminals on the amplifier's
power connectors 2 (on the previous illustra-
tions page).
Figure 2a.
0 gauge
4 gauge
Fuse Holder
150A
Battery
Inside Engine Compartment
Distribution Block
4 gauge
OWNER'S MANUAL
• For competition installations, replace the fuse
with a 300A ANL (not included). Connect a single
piece of 0 gauge wire to the other end of the
fuse holder as in diagram 2b. Route the 0 gauge
0 gauge
wire through the car, using rubber grommets in
all locations where the wire must pass through
metal. Connect the other end of the 0 gauge
4 gauge
wire to the input terminal of a power distribution
Fuse Holder
block (not included) designed to accept 0 gauge
150A
wire. Connect two pieces of 4 gauge wire to
Battery
the distribution block and connect the other
ends of the wire to the two "+" terminals on
Inside Engine Compartment
the amplifier's power connectors 2 (on the
previous illustrations page).
Figure 2b.
Distribution Block
4 gauge
0 gauge
Fuse Holder
300A
Battery
Inside Engine Compartment

2 Power Input Connectors

• +12V: See "fuseholder" 1 .
• GND: Connect to the vehicle's chassis using 4
gauge wire. Refer to the picture below.
Factory Bolt Ring Connector
Note: Remove any paint Star Washer
below ring connector.
• 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 Low-Pass Filter Frequency Control
• 12dB/octave low-pass filter,
variable from 32Hz to 320Hz.
• See C for the adjustment procedure.
3
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 high-
pass 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.
0 gauge
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
Ground Wire
The Remote Level Control, if installed, will allow
you to adjust the level of bass while seated in the
listening position.