JBL GTO 24001 Service Manual Download Page 4

Page: 4 / 29

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

Speaker Output Connectors

• Connect the speakers to these terminals,

observing proper polarity. or –
terminal may be used. Minimum total
impedance is 2 ohms.

Fuse 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

(on the previous illustra-

tions page).

Figure 2a.

• 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
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
wire to the input terminal of a power distribution
block (not included) designed to accept 0 gauge
wire. Connect two pieces of 4 gauge wire to
the distribution block and connect the other
ends of the wire to the two “+” terminals on
the amplifier’s power connectors

(on the

previous illustrations page).

Figure 2b.

Power Input Connectors

• +12V: See ”fuseholder“

• GND: Connect to the vehicle’s chassis using 4

gauge wire. Refer to the picture below.

• REM: Connect to the “Remote Out” lead from

the source unit or to a source of switched
12V+ (ACC).

Aux Output Connectors (RCA)

• Nonfiltered pass-through output. Connect to the

input of an additional amplifier.

Input Connectors (RCA)

• Connect to the RCA outputs from the source unit

or signal processor.

Input-Level Control

• Used to match the input level of the amplifier

to the output level of the source unit.

• See

for the adjustment procedure.

Low-Pass Filter Frequency Control

• 12dB/octave low-pass filter,

variable from 32Hz to 320Hz.

• See

for the adjustment procedure.

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).

DBO High-Pass Filter Frequency control,
variable between 10Hz and 100Hz. See
above for appropriate settings.

DBO Boost control provides up to
12dB of boost, slightly above the high-
pass filter’s frequency. See above for
appropriate settings.

Remote Level Control (RLC) Connector

• Connect the Remote Level Control (RLC) here,

using the supplied RJ-11 cable.

Power On LED

• Illuminated when the amplifier is on.

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).

Setting Input Level

Turn Input Level control counterclockwise to
6V (minimim).

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

Turn Input Level control clockwise until the
bass output is proportionate to the output of
the high-frequency speakers, according to
your preference.

Input level is now adjusted correctly.

Setting the Crossover

Crossover setting for subwoofers.

Note:

Acceptable frequency ranges are indicated

in gray.

Remote Level Control

The Remote Level Control, if installed, will allow
you to adjust the level of bass while seated in the
listening position.