C508GTi MkII C608GTi MkII
PROFESSIONAL-GRADE AUTOMOTIVE COMPONENT SPEAKER SYSTEM OWNERS MANUAL
THE OFFICIAL BRAND OF LIVE MUSIC.

WWW.JBL.COM

G E N U I N E
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 14 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 in high/forward location on door
TWEETER and WOOFER on kick panel
WOOFER in factorydoor location
Figure 1. Mounting the Fig 1 woofer and tweeter in the kick panels
Figure 3. Mounting the woofer and Fig 3 tweeter in the doors

TWEETER on dash

TWEETER on kick panel
Fig 2 Figure 2. Mounting the woofer in the door and the tweeter in the kick panel
Fig woofer in the Figure 4. Mounting the 4 door and the tweeter in the dash

INSTALLATION

TWEETER INSTALLATION WOOFER INSTALLATION ELECTRICAL CONNECTIONS AND CROSSOVER ADJUSTMENTS
Figure 5. Surface-mounting the tweeter: first push in (1), then turn (2)
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 6. Flush-mounting the tweeter: first push in (1), then turn (2) Figure 10. Connecting the speakers and the amplifier to the crossover
Figure 11. Adjust the crossover using the jumpers provided
Figure 9. Mounting the C608GTi woofer in 165mm holes (in many European and American automobiles)

SPECIFICATIONS

C508GTi MkII C608GTi MkII 5-1/4" (130mm) 6-1/2" (160mm) Professional-grade Professional-grade automotive component automotive component speaker system speaker system 500W 600W 125W 150W 58Hz 21kHz 50Hz 21kHz 4 ohms 4 ohms 88dB 89dB 4th-Order Linquitz-Riley Acoustic, 3500Hz, 24dB/octave 4-5/8" (118mm) 5-1/8" (131mm) 2-3/8" (61mm) 2-11/16" (69mm) 3.50 0.25 0.0117 6.69 7.90 405.0 18.21 17.48 58.61 9.01 0.52 0.50 1/4" (6.35mm) 11/16" (16.51mm) 2" (50.8mm) 1/8" (3.44mm) Tweeter A valid serial number is required for warranty coverage. Features, specifications and appearance are subject to change without notice. n/a n/a n/a n/a n/a n/a 1-3/4" (45mm) 1" (25.4mm) 3.14 0.01 0.0006 2.22 0.0.46 0.1.8 2.463 1.04 n/a n/a 1" (25.4mm) n/a This product is designed for mobile applications and is not intended for connection to the mains.

Power handling (peak) Power handling (RMS) Frequency response Nominal impedance Sensitivity (2.83V/1m) Crossover Cutout diameter Mounting depth
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
Thiele and Small Parameters Revc 3.00 Levc 0.16 Sd 0.0086 BL 6.00 Vas 3.34 Cms 322.0 Mms 12.07 Mmd 11.61 Fs 80.7 Qms 6.51 Qes 0.51 Qts 0.47 Top-plate thickness 3/16" (5.08mm) Voice-coil length 1/2" (12.7mm) Voice-coil diameter 2" (50.8mm) Xmax 1/8" (3.44mm)
Declaration of Conformity
We, Harman Consumer Group International 2, route de Tours 72500 Chteau du Loir France declare in own responsibility that the products described in this owners manual are in compliance with technical standards: EN 61000-6-3:2001 EN 61000-6-1:2001 Klaus Lebherz Harman Consumer Group International Chteau du Loir, France 7/06

For more than 60 years, JBL has been delivering products embodying the technology developed in the professional arena equipping leading recording studios and movie theaters, as well as live-music reinforcement in venues ranging from dance clubs to Woodstock. We continue to transform this expertise into products that provide the impact and excitement of a live performance. The JBL experience is for enthusiasts who wont settle for anything less than live at home or on the go. JBL GTi component systems originate in a decades-long passion for studio accuracy and concert impact. Their design demonstrates the technical acumen required to sculpt sound with grace for car cabin acoustics. Here are several of the key technologies that help GTi deliver an incredible listening experience. SYMMETRICAL FIELD GEOMETRY SFG technology determines the precise shape of the magnetic field in and around the magnetic gap. This provides identical motor force both above and below the gap. The benefit is low distortion, even at high excursion.
PURE-TITANIUM-DOME TWEETERS The JBL pure-titanium dome is suspended in a high-loss rubber surround that is designed to damp dome resonances. The benefit is smooth response, free from fatigue, even at high-output levels. EDGE-WOUND ALUMINUM VOICE COILS Using this 2" ribbon-shaped wire allows JBL engineers to precisely specify the number of windings in the magnetic gap. The benefits are distortion-free extension of high frequencies and increased power handling. FOURTH-ORDER LINKWITZREILY ACOUSTIC PASSIVE CROSSOVERS Steep slopes minimize interaction between drivers. The benefit is uniform system response in a variety of vehicle mounting locations.

C608GTi MKII

6-1/2" (160mm) 2-Way Component System Power handling: 150W RMS, 600W peak Frequency response: 50Hz 21kHz System impedance: 4 ohms Sensitivity: 89dB Voice-coil diameter: woofer 2" (50mm) edge-wound; tweeter 1" (25mm) Mounting depth: woofer 2-11/16" (68mm); tweeter 1-1/8" (29mm) Overall diameter: woofer 6-1/4" (159mm); tweeter 2-1/16" (53mm) Cutout diameter: woofer 5-1/8" (131mm); tweeter 1-3/4" (45mm) Crossover dimensions (L x W x H): 6" x 4-1/2" x 1-3/4" (153mm x 115mm x 45mm)

C508GTi MKII

5-1/4" (130mm) 2-Way Component System Power handling: 125W RMS, 500W peak Frequency response: 58Hz 21kHz Sensitivity: 88dB System impedance: 4 ohms Voice-coil diameter: woofer 2" (50mm) edge-wound; tweeter 1" (25mm) Mounting depth: woofer 2-3/8" (61mm); tweeter 1-1/8" (29mm) Overall diameter: woofer 5-1/4" (133mm); tweeter 2-1/16" (53mm) Cutout diameter: woofer 4-5/8" (118mm); tweeter 1-3/4" (45mm) Crossover dimensions (L x W x H): 6" x 4-1/2" x 1-3/4" (153mm x 115mm x 45mm)
THE OFFICIAL BRAND OF LIVE MUSIC.
Harman Consumer Group, Inc. 250 Crossways Park Drive Woodbury, NY 11797 516.255.4JBL (4525) Fax: 516.682.3556 www.jbl.com
Features, specifications and appearance are subject to change without notice. JBL is a trademark of Harman International Industries, Incorporated, registered in the United States and/or other countries. Symmetrical Field Geometry is a trademark of Harman International Industries, Incorporated. Designed, edited and digitally produced by the Harman Consumer Group Marketing & Design Center, Woodbury, NY. 2008 Harman International Industries, Incorporated. All rights reserved. Part No. GTICOMPPI3/08