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JBL PRO POWER C608GTi User manual

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PROPOWER
TM
rofessional-Grade Automotive Component Speaker System Owner’s
Important: Installation of automotive
stereo components can require
extensive experience performing a
variety of mechanical and electrical
procedures. Although these instruc-
tions explain how to install a GTi
component system in a general
sense, they do not show the exact
installation method for your particu -
lar car. If you don’t feel you have the
necessary tools or experience, ask
your authorized JBL car audio dealer
about professional installation
options.
Warning: Playing loud music in your
automobile can permanently damage
your hearing as well as hinder your
ability to hear traffic. We recommend
listening at
low volume while driving. JBL accepts
no liability for hearing loss, bodily
injury
or property damage
resulting from
use or
misuse of this product.
A Note About System Performance
For the best performance possible,
the
GTi components should be used with
a two-channel amplifier with output
power
of at least 50W RMS per channel.
The
passive
crossover contains impedance-
compensating
circuitry and has been
computer-optimized for the flattest
possible frequency response with the
tweeter flush-mounted, on-axis with
the listener. The combined responses
of the speakers and passive
crossover constitute a 4th-order
Linquitz-Riley
acoustic alignment and
cannot be duplicated
with any elec -
tronic crossover currently available
for car audio use. Consequently, bi-
amping a GTi
component system with an electronic
crossover is not recommended.
Speaker Placement
Figures 1 – 4 show possible speaker
placements in the order of most
desirable to least desirable. Kick-
panel mounting will provide the best
staging and imaging in most vehicles.
TWEETER
on dash
WOOFER
in factory-
door location
TWEETER
on kick panel
WOOFER
in factory-
door location
TWEETER
and
WOOFER
on kick panel
WOOFER
in factory-
door location
TWEETER
in high/forward
location on door
Fig 1 Fig 3
Fig 2 Fig 4
Figure 1.
Mounting the woofer and tweeter in
the kick panels
Figure 2.
Mounting the woofer in the door and
the tweeter in the kick panel
Figure 3.
Mounting the woofer and tweeter in
the doors
Figure 4.
Mounting the woofer in the door and
the tweeter in the dash
–
+
Figure 5.
Surface-mounting the tweeter:
first push in (1), then turn (2)
Figure 6.
Flush-mounting the tweeter:
first push in (1), then turn (2)
0
Woofer Installation
Figure 7.
Mounting the C508GTi or C608GTi woofer
where there is no factory speaker location.
To mount the C508GTi in factory locations,
omit the grille and grille tray.
Figure 8.
Mounting the C608GTi woofer in
standard 5-1/4" holes (in many
Japanese and American automobiles)
Figure 9.
Mounting the C608GTi woofer in
165mm holes (in many European
and American automobiles)
Electrical Connections and Crossover Adjustments
Figure 10.
Connecting the speakers and the amplifier
to the crossover
Figure 11.
Adjust the crossover using the jumpers
provided
DECLARATION OF CONFORMITY
We, Harman Consumer International
2, route de Tours
72500 Chateau-du-Loir
France
Emmanuel Millot
Harman Consumer International
Chateau-du-Loir, France 7/01
declare in own responsibility, that the products
described in this owner’s manual are in compliance
with technical standards:
EN 50081-1:1992
EN 50082-1:1997
0
PROPOWER
TM
JBL Consumer Products • 250 Crossways
Park Drive, Woodbury, NY 11797
1-800-336-4JBL (4525) www.jbl.com
©2001 JBL, Incorporated • JBL is a regis-
Specific
C508GTi C608GTi Tweeter
5-1/4" Professional-grade 6-1/4"
Professional-grade
automotive component automotive component
speaker system speaker system
Power handling (peak) 500W 600W n/a
Power handling (RMS) 125W 150W n/a
Frequency response 58Hz – 21kHz 50Hz – 21kHz n/a
Nominal impedance 4 ohms 4 ohms n/a
Sensitivity (2.83V/1m) 88dB 89dB n/a
Crossover 4th-Order Linquitz-Riley Acoustic, 3500Hz, 24dB/octave
n/a
Cut-out diameter 4-5/8" (118mm) 5-1/8" (131mm) 1-3/4” (45mm)
Mounting depth 2-3/8" (61mm) 2-11/16" (69mm) 1” (25.4mm)
Thiele and Small Parameters
Revc 3.00 3.50 3.14
Levc 0.16 0.25 0.01
Sd 0.0086 0.0117 0.0006
BL 6.00 6.69 2.22
Vas 3.34 7.90 0.0016
C m s 322.0 405.0 3 1
M m s 12.07 18.21 0.46
M m d 11.61 17.48 0.452
Fs 80.7 58.61 1320
Q m s 6.51 9.01 1.8
Qes 0.51 0.52 2.463
Qts 0.47 0.50 1.04
Top-plate thickness 0.2” (5.08mm) 0.25” (6.35mm) n/a
Voice-coil length 0.5” (12.7mm) 0.65” (16.51mm) n/a
Voice-coil diameter 2” (50.8mm) 2” (50.8mm) 1” (25.4mm)