500 GTi - JBL Car Audio User Guide / Operation Manual. Page 4

The 400 and 500GTi’s are built to

meet the same rigorous standards of
construction and performance that have
long established JBL’s renowned home
and professional speaker systems. The
400 and 500GTi Woofer/Midranges
incorporate advanced JBL woven Kevlar
cones which are especially suited to the
unique acoustic and environmental
conditions which characterize automotive
sound.   The 400 and 500GTi are
engineered to provide excellent frequency
response low distortion, and high-power
handling, in a minimum size.

The small size of the GTi

Woofer/Midranges is made possible
through the use of a Neodymium magnet
assembly with JBL’s Stray Field
Containment Geometry. By preventing
stray magnetic fields, this closed circuit
magnetic assembly design concentrates
the magnetic field on the voice coil where
it provides superior performance. This high
concentration of magnetic power is
coupled to a 2" Edge-wound Aluminum

Wire High Temperature Fiberglass Voice
Coil. This voice coil uses lightweight
aluminum wire to maintain the agility to
reproduce high frequencies while its large
diameter assures extremely high thermal
power handling.

The cone motion of these high

excursion designs is controlled by a
Aromatic Polyamid Fiber Spider. This new
material is able to control the 0.6" motion of
the cone while maintaining musical
accuracy because it is 3 times stronger
than conventional spider materials. 

Treated Kevlar fiber cones are used

because of their combination of low weight,
high stiffness and resistance to resonances.
The 400 and 500GTi Woofer/Midranges are
topped off with a treated fabric inverted dome
for smooth reproduction of high frequencies.

What does all this technology add up

to? A driver with flat frequency response,
excellent off-axis response, and high
output capability, all in a small and elegant
package. The result is exceptionally
smooth and detailed music reproduction to
5kHz and clean sound that cuts through
road noise.

The availability of separate

components makes a variety of system
designs possible. Because of their small
size, the 400 and 500GTi’s are perfect for
many different applications. 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 tweeter and subwoofer
transducers are the ideal companion
products to your 400 and 500GTi
Woofer/Midranges. Each of the GTi
Competition Series components is
designed to complement the others to
provide the highest performance with the
simplest and most predictable system
design. To use the 400 and 500GTi as the
woofer/midrange transducers in a high
quality system, we recommend you use
either a high quality active crossover such
as JBL’s GTX47, GTX4 or GTX2. If you
prefer passive crossovers, we suggest a
complete 408GTi or 508GTi system which
includes the 08GTi Tweeter, 400 or 500GTi

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400/600 MANUAL.QXP  7/17/98 11:10 AM  Page 4