GTO 1204BP - JBL Car Audio User Guide / Operation Manual

®

Designed and Engineered
in the USA

for choosing a 

JBL GTO subwoofer enclosure. 
These products have been designed 
to deliver great bass performance
from a compact, easily installed
enclosure. To get the best perfor-
mance from your enclosure, we
strongly recommend that installation
be entrusted to a qualified professi-
onal. Although these instructions
explain how to install your product
in a general sense, they do not show
specific installation methods that
may be required for your particular
vehicle. If you do not have the
necessary tools or experience, do
not attempt the installation yourself.
Instead, please ask your authorized
JBL car audio dealer about
professional installation. 
In order that we may better serve 

you should you require warranty 

service, please retain your 

original sales receipt and serial 

number. 

Playing loud music

in an automobile can permanently
damage your hearing as well as 
hinder your ability to hear traffic. 
We recommend listening at low 
levels while driving. JBL accepts no
liability for hearing loss, bodily injury
or property damage resulting from
use or misuse of this product.

• Always wear protective eyewear

when using tools.

• Turn off all audio components and

other electrical devices before you
start. Disconnect the (–) negative
lead from your vehicle’s battery.

• Check clearances on both sides of

a planned mounting surface. Be
sure that screws or wires will not
puncture brake lines, fuel lines or
wiring harnesses, and that wire
routing will not interfere with the
safe operation of the vehicle.

• When making electrical

connections, make sure they are
secure and properly insulated.

• Before drilling or cutting holes, use

a utility knife to remove unwanted
fabric or vinyl, to keep material
from snagging in a drill bit or saw.

• Do not mount speakers where they

will get wet.

• If a fuse must be replaced, be sure

to use the same type of fuse and
current rating as that of the
original.

Choose a mounting location that
doesn’t interfere with cargo, the
fold-down rear seat or the trunk lid.
The best location is usually a corner 
of the trunk or cargo area. Securely
mount enclosure to the mounting
surface using the supplied material. 

Connect the speaker cable to the
enclosure as shown in Figure 1.
Please observe the following 
installation tips:

Use at least 0.5mm

2

speaker wire for

speaker-level input connections.

HEAD UNIT

AMP

BATTERY

Speaker Out

Remote
Turn-On

R

L

Declaration of Conformity

We, Harman Consumer Group International

2, route de Tours 
72500 Chateau du Loir
France

declare in own responsibility that the products described in this owner’s
manual are in compliance with technical standards: 

EN 61000-6-3:2001
EN 61000-6-1:2001

Klaus Lebherz

Harman Consumer Group International

Chateau du Loir, France  8/05

JBL Consumer Products 
2 route de Tours, 72500 Chateau du Loir, France
www.jbl.com

JBL, Harman International and Grand Touring are trademarks of 
Harman International Industries, Incorporated, registered in the 
United States and/or other countries.

Part No. GTO1204BRBPOM8/05

Type

Bass-Reflex

Band-Pass

Woofer

12" (300mm)

12" (300mm)

Power Handling, RMS

300W

300W

Power Handling, Peak

1200W

1200W

Sensitivity (2.83V/1m)

93dB

93dB

Frequency Response

35Hz – 300Hz

30Hz – 150Hz

Impedance

4 Ohms

4 Ohms

Illumination Input Voltage

Not availabel

3V – 16V DC

Dimensions (L x D x H)

520mm x 414mm x 370mm

520mm x 450mm x 370mm

(20-1/2" x 16-5/16" x 14-9/16")

(20-1/2" x 17-11/16" x 14-9/16")

The loudspeaker grilles may be cleaned with a damp cloth. Do not use any cleaners or solvents on the grilles or the speaker cones.
A valid serial number is required for warranty coverage.
Features, specifications and appearance are subject to change without notice.
This product is designed for mobile applications and is not intended for conection to the mains.