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C508GTi MkII
C608GTi MkII
PROFESSIONAL-GRADE AUTOMOTIVE
COMPONENT SPEAKER SYSTEM
OWNER’S MANUAL
THE OFFICIAL BRAND
OF LIVE MUSIC.
WWW.JBL.COM
GENUINE JBL
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TWEETER
on dash
WOOFER
in factorydoor location
TWEETER
on kick panel
WOOFER
in factorydoor location
T
WEETER
and
WOOFER
on kick panel
WOOFER
in factorydoor location
T
WEETER
in high/forward
l
ocation on door
Fig 1
Fig 3
INSTALLATION WARNINGS AND TIPS
ABOUT THESE
INSTRUCTIONS
Installation of automotive stereo components can require extensive experience
with a variety of mechanical and electrical
procedures. Although these instructions
explain how to install GTi component
systems in a general sense, they do not
show the exact installation methods for
your particular vehicle. If you do not feel
you have the experience, do not attempt
the installation yourself – instead, ask
your authorized JBL car audio dealer
about professional installation options.
LOUD MUSIC
AND HEARING
Playing loud music in an automobile can
hinder your ability to hear traffic, as well
as permanently damage your hearing. The
maximum volume levels achievable with
JBL speakers, combined with high power
amplification, may exceed safe levels for
extended listening. We recommend using
low volume levels when driving. JBL
accepts no liability for hearing loss, bodily
injury or property damage as a result of
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 impedancecompensating 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 Linkwitz-Reily
acoustic alignment and cannot be
duplicated with any electronic 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.
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
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–
+
–
+
INSTALLATION
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)
WOOFER INSTALLATIONTWEETER 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 C608GTiwoofer
in 165mm holes (in many European and
American automobiles)
ELECTRICAL CONNECTIONS AND CROSSOVER ADJUSTMENTS
Figure 11. Adjust the crossover using the
jumpers provided
Figure 10. Connecting the speakers and
the amplifier to the crossover
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SPECIFICATIONS
C508GTi MkII C608GTi MkII Tweeter
5-1/4" (130mm) 6-1/2" (160mm)
Professional-grade Professional-grade
automotive component automotive component
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
Cutout 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
Cms 322.0 405.0 31
Mms 12.07 18.21 0.46
Mmd 11.61 17.48 0.452
Fs 80.7 58.61 1320
Qms 6.51 9.01 1.8
Qes 0.51 0.52 2.463
Qts 0.47 0.50 1.04
Top-plate thickness 3/16" (5.08mm) 1/4" (6.35mm) n/a
Voice-coil length 1/2" (12.7mm) 11/16" (16.51mm) n/a
Voice-coil diameter 2" (50.8mm) 2" (50.8mm) 1" (25.4mm)
X
max
speaker system speaker system
1/8" (3.44mm) 1/8" (3.44mm) n/a
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 connection to the mains.
Harman Consumer Group, Inc.
250 Crossways Park Drive, Woodbury, NY 11797 USA
516.255.4JBL (4525) (USA only) www.jbl.com
© 2006 Harman International Industries, Incorporated.
All rights reserved.
JBL and Harman International are trademarks of
Harman International Industries, Incorporated,
registered in the United States and/or other countries.
Part No. C508/C608GTiMkIIOM7/06
Declaration of Conformity
We, Harman Consumer Group International
2, route de Tours
72500 Château du Loir
France
declare in own responsibility that the products described in this owner
manual are in compliance with technical standards:
EN 61000-6-3:2001
EN 61000-6-1:2001
Klaus Lebherz
Harman Consumer Group International
Château du Loir, France 7/06
s
’
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