504 GTi - JBL Car Audio User Guide / Operation Manual

504 gti user guide / operation manual
Model
504 GTi
Pages
16
Size
326.07 KB
Type
PDF
Document
User Guide / Operation Manual
Brand
Device
Car Audio
File
504-gti.pdf
Date

Read JBL 504 GTi User Guide / Operation Manual online

404/504 MANUAL.QXP  7/17/98 11:39 AM  Page 1
Table of Contents
Welcome to Club GTi ............................................3
About this Manual .................................................3
Autosound at its Best ............................................3
Designing Your System .........................................5
Coupled Component
TM
Placement.........................5
Installation Warnings and Tips ..............................6
Mounting Instructions ............................................6
Installing the GTi System Crossover .....................6
Woofer/Midrange Driver Mounting ........................7
Mounting Speakers in Custom Locations..............8
Wiring ..................................................................10
System Connections ...........................................10
Crossover Tweeter Level Adjustment..................12
Speaker Break-In ................................................12
A Note on Power Handling ..................................12
In Case of Difficulty .............................................13
Specifications ......................................................14
Thiele-Small Specifications .................................15
2
404/504 MANUAL.QXP  7/17/98 11:39 AM  Page 2
Welcome to Club GTi
Thank you for purchasing the finest
Automotive Coupled Component
TM
Systems JBL has ever produced. As a 
GTi Competition Series owner, you are a
member of a select group of people who
enjoy the most advanced mobile audio
products available. We call this group
“Club GTi.” By sending in the customer
information card, which you will find
attached to your warranty, we will
automatically register you as a Club GTi
member which will give you access to
exclusive Club GTi apparel and other
special offers we will make available from
time to time. We suggest you fill the card
out at your earliest convenience.
Also, be sure to save your sales
receipt in a safe place. It will be necessary
to use this document as proof of purchase
in the event that you ever need warranty
service. It is also useful for insurance
purposes and for establishing value when
you re-sell your vehicle. 
About This Manual
Because of the performance capability
of your GTi Competition Series product,
and the variety of potential system
configurations, we strongly recommend
that you have the system professionally
installed. You will also get a better warranty
if your equipment is professionally installed
by an authorized GTi dealer and you have
your warranty card stamped. This manual
provides information on installation and
usage to help a skilled technician get the
most from your GTi Competition Series
product. This manual does not cover basic
information about installation which is
common knowledge to a professional
installer, except for information which is
unique to the 404 and 504GTi systems.
If you feel you possess the necessary
skills, and prefer to install the equipment
yourself, this manual will provide you with
the necessary specifics to properly use the
404 or 504GTi in typical installations.
Consult your JBL dealer, or a qualified
technician, for more information.
Autosound at its Best
The 404 and 504GTi Coupled
Components
TM
are built to meet the same
rigorous standards of construction and
performance that have long established
JBL’s renowned home and professional
speaker systems. Coupled Components
TM
are the first to provide true component
driver quality in a format which mounts 
in a single hole. The GTi Coupled
Components
TM
combine the reference
standard 400 and 500GTi Woofer/Midrange
Drivers with a cantilever mounted 20mm
Pure Titanium tweeter and outboard 
2-way crossover. The tweeter is mounted
at a 15° angle which, combined with the
exclusive Intermount
TM
mounting system,
allows orientation of the speaker for
optimum imaging in any vehicle. The
near-coincident mounting provides the
considerable advantages of equal sound-
path length from the woofer and tweeter to
your ear, but without the horn loading
effects that create a distorted midrange in
designs with apex-mounted tweeters. 
3
404/504 MANUAL.QXP  7/17/98 11:39 AM  Page 3
The 404 and 504GTi Woofer/Midrange
Drivers incorporate advanced JBL woven
Kevlar cones which are especially suited
to the unique acoustic and environmental
conditions which characterize automotive
sound. The 20mm tweeter incorporates
advanced JBL pure titanium technology
which works extremely well in the 
unique acoustic environment of modern
vehicles. The 404 and 504GTi have been
engineered to provide excellent power
handling, good dispersion and balanced
frequency response, along with minimum
size and flexible installation options for
optimizing placement within the vehicle.
Treated Kevlar fiber cones are used
because of their combination of low
weight, high stiffness and resistance to
resonances. The 404 and 504GTi
Woofer/Midranges are topped off with a
treated fabric inverted dome for smooth
reproduction of upper midrange
frequencies.
The cone motion of these high
excursion woofer/midrange designs is
controlled by a Aromatic Polyamid fiber
spider. Because it is 3 times stronger than
conventional spider materials, this robust
material is able to control the up to 0.6"
motion of the cone while maintaining
musical accuracy. 
The small size of the GTi Woofer/
Midrange Drivers is made possible 
through the use of a Neodymium magnet
assembly with JBL’s Stray Field
Containment Geometry. By minimizing
stray magnetic fields, this closed circuit
magnetic assembly design concentrates
the magnetic field on the voice coil where
it provides superior performance. In the
woofer/midrange drivers, this high
concentration of magnetic power is
coupled to a 2" Edge-wound Aluminum
Wire High Temperature Fiberglass Voice
Coil. This coil uses lightweight aluminum
wire to maintain the agility to reproduce
high frequencies while its large diameter
and fiberglass former assures extremely
high thermal power handling. The tweeter
uses Oxygen Free Copper wire immersed
in a thermally conductive bath of viscous
Ferrofluid
TM
. This fluid not only conducts
heat away from the voice-coil to improve
power handling, but damps the
fundamental resonance of the dome for
optimum sound.
The tweeters in the 404 and 504GTi
feature domes made from pure titanium.
Pure titanium has long been known to
have a very high stiffness to weight ratio,
making it ideal for treble reproduction.
However, only JBL has “tamed” titanium
through a special manufacturing process.
The dome of the 404 and 504GTi Tweeter
is created using special nitrogen gas
cooled forming machines which can create
a uniformly paper-thin dome without the
work-hardening or deformation which
causes resonances in domes made
without benefit of this process.
Equally important is the 404 and
504GTi crossover design. Each crossover
was meticulously optimized in JBL’s state-
of-the-art acoustic laboratory to guarantee
a seamless blend of the woofer/midrange
and tweeter output. Unlike generic or
general purpose crossovers, the design of
the 404 and 504GTi Crossovers was
performed with a full knowledge of the
performance characteristics of each driver,
allowing frequency, phase, and power
4
404/504 MANUAL.QXP  7/17/98 11:39 AM  Page 4
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Here you can read online and download JBL 504 GTi User Guide / Operation Manual in PDF. 504 GTi user guide / operation manual will guide through the process and help you recover, restore, fix, disassemble and repair JBL 504 GTi Car Audio. Information contained in service manuals typically includes schematics / circuit diagrams, wiring diagrams, block diagrams, printed wiring boards, exploded views, parts list, disassembly / assembly, pcb.