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response to be completely optimized for
each combination.

What does all this technology add up

to? A Coupled Component

TM

system with

ideal frequency balance, excellent off axis
response, and high output capability in a
small, elegant package. The result is
exceptionally smooth and detailed music
reproduction over the full range of
frequencies and clean sound that cuts
through road noise.

These Coupled Components

TM

can 

be placed in stock locations yet still 
deliver the punch and performance of a
component system. The near-coincident,
low profile tweeter mounting and small
size of the driver allow these Coupled
Component

TM

systems to be mounted for

optimum imaging in ways that cannot
easily be achieved with separate
component systems.

The overall quality of any system

design is a result of how well all of the
components work together, not just the
result of the performance of any one
component. JBL GTi Series woofer/
midbass or subwoofer transducers are
the ideal companion products to your 404
and 504GTi systems. Each of the GTi
Competition Series products are designed
to complement the others to provide the
highest performance with the simplest 
and most predictable system design. 
To use the 404 and 504GTi as the satellite
transducers in a high quality system, 
we recommend you use either a high
quality active crossover such as JBL’s
GTX47, GTX4 or GTX2 to provide
optimum matching to your subwoofer or
woofer/midbass loudspeaker. If you prefer
passive crossovers, we recommend that
you use only high quality audiophile grade
film-type capacitors and Low DCR
inductors to get the most out of your
system. The most popular system
configuration is a hybrid using an active

crossover for the subwoofer to woofer/
midrange crossover point, and the passive
crossover included with your Coupled
Components

TM

for the woofer/midrange to

tweeter crossover. Your GTi Competition
Series dealer is uniquely qualified to help
guide you on the best system configuration
for your needs.

The location of each of the

loudspeakers plays a vital role in achieving
proper frequency response and spacious
imaging. The near-coincident design of the
Coupled Components

TM 

gives the 404 and

504GTi systems an extremely wide and
smooth dispersion pattern. As a direct
result, excellent performance may be
achieved in any vehicle. Due to the wide
variety of vehicles, there is more than one
“right” way to locate the 404 and 504GTi.
Knowledge of the following considerations
will help you get the most from your
system:

5

404/504 MANUAL.QXP  7/17/98 11:39 AM  Page 5

1.

The most spacious stereo image is
achieved when the speakers are placed
as wide apart as possible.

2.

The best center image will be achieved
when the distance from the left speaker
to your left ear is as equal as possible
to the distance from the right speaker to
your right ear. This is most easily
achieved by placing the 404 and
504GTi as far forward as you can.

3.

You will get the best frequency
response when the path from the
speakers to your ear is unobstructed.

4.

Because of the high acoustic energy
capability of the 404 and 504GTi, they
must be securely mounted in a rigid
panel which is free from resonances,
rattles and air leakage.

•

Be careful not to cut or drill into fuel
tanks, fuel lines, brake or hydraulic
lines, vacuum lines or electrical wiring
when working on your vehicle. When
door mounting the speakers, make
sure there is sufficient clearance for
windows, electric window motors or
cranks, and linkages. Inspect behind
panels before you cut or drill.

•

Be sure to check for clearance of
window, cranks and linkages when
mounting speakers in door panels.

•

Do not use the speakers unmounted.
Failure to securely mount this product
could result in damage or injury,
particularly in the event of an accident.

•

Although the materials used on the 404
and 504GTi are inherently water
resistant, do not mount the speakers
where they will get wet.

•

Always disconnect the ground wire
from the battery before doing any work
on the vehicle.

Pick a mounting location after reading

the recommendations in the Coupled
Component

™

Placement section of this

manual.

The GTi system crossover should be

mounted securely to prevent damage to
the crossover or possible loosening of
wiring connections. Choose one of the
crossover mounting methods and follow
the directions on the following page.

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404/504 MANUAL.QXP  7/17/98 11:39 AM  Page 6

Mounting the GTi Crossover with Wire Ties
1.   Remove the crossover cover as 

shown in Figure G.

2.   Remove the crossover board from the 

plastic case.

3.   Use wire ties to secure the plastic case 

to the desired location as shown in 
Figure A.

4.   Cut off the excess plastic on the

wire ties.

5.   Re-install the PCB and install wiring 

from the crossover to the amplifier 
and speaker locations as shown in 
Figure F.

6.   Re-install the crossover cover.

Mounting the Crossover with Screws
1.    Remove the crossover cover as 

shown in Figure G.

2.    Remove the crossover board from 

the plastic case.

3.    Mark 4 hole locations, drill holes and 

secure the bottom cover to the 
desired mounting location as shown 
in Figure B. Before starting, make 
sure no electrical or other critical car 
components are located where you 
will be drillling. 

4.    Re-install PCB and install wiring from 

the crossover to the amplifier and 
speaker locations as shown in Figure F.

5.    Re-install the crossover cover.

Mounting to Stock Hole Locations
1.

Access the stock speaker location and
remove the stock speaker. The 404
and 504GTi include Intermount

TM

mounting ring adapters which
allow the speaker to be mounted
in standard 4" and 5

1

/

4

" holes

respectively. 

2.

Mount the intermount adapter plate to
the stock location using four #8 x 1

1

/

4

"

screws as shown in Figure C.

3.

Attach the foam gasket to the back of
the woofer/midrange. Connect the
speaker wire from the crossover
terminals marked “W” to the
woofer/midrange terminals of the
speaker by either soldering (preferred)
or using crimp terminals. Connect the
“+W” terminal of the crossover to the
orange “W” terminal of the speaker.
Repeat for “–W” terminal.

7

Figure A

Figure B

404/504 MANUAL.QXP  7/17/98 11:39 AM  Page 7

4.

Connect the speaker wire from the
crossover terminals marked “T” to the
tweeter terminals of the speaker by
either soldering (preferred) or using
crimp terminals. The “+T ” terminal of
the crossover should be connected to
the orange colored T terminal on the
speaker.

5.

The Intermount

TM

adapter plate has a

series of mounting holes which allow
the coupled component tweeter to be
angled as desired. Pick an orientation
which angles the tweeter in the
desired direction and mount the
woofer/midrange driver to the
Intermount

TM

adapter ring using three

#8 x 

7

/

16

" screws as shown in Figure C.

6.

Replace the stock speaker panels.

1.

Snap the grill of the speaker onto the
driver and choose three hole locations
so that the tweeter is angled properly
and the grille logo is oriented as desired
for your installation. Use the Fabric
Displacement Ring included in the
package to mark the location of the
three screw holes and the speaker
cutout holes (cutout hole sizes are
listed in Specifications section). Before
cutting or drilling make sure that there
are no car components, electrical wiring
or any other items that could be
damaged.

2.

Cut out the speaker hole at the
mounting location and drill the three
marked pilot holes with a 

1

/

8

" (3mm) drill.

3.

Run speaker wire to the hole location,
making sure that either an active or
the included passive crossover is
connected before the speaker. 

4.

Put the speaker Fabric Displacement
Ring under the speaker as shown in
Figure D.

8

Figure C

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