JBL MkII automotive Owner's Manual
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JBL MkII automotive Owner's Manual

Gti series automotive subwoofer
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GTi SERIES
W10GTi MkII
W12GTi MkII
W15GTi MkII
automotive
subwoofer
owner's manual
THANK YOU
for choosing a JBL
®
GTi Series subwoofer.
GTi subwoofers are designed to
provide maximum sound output in a
variety of enclosure types while
maintaining the superb sound quality
associated with JBL. To ensure the best
subwoofer performance, we strongly
recommend that installation be entrusted to a
qualified professional. Although these instructions
explain how to install a GTi Series subwoofer in
a general sense, they don't show the specific
installation procedures that may be required for
your particular vehicle. If you feel you don't have
the necessary tools or experience, don't attempt
the installation yourself; rather, ask your authorized
JBL dealer about professional-installation options.

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Summary of Contents for JBL MkII automotive

  • Page 1 GTi subwoofers are designed to provide maximum sound output in a variety of enclosure types while maintaining the superb sound quality associated with JBL. To ensure the best subwoofer performance, we strongly recommend that installation be entrusted to a qualified professional. Although these instructions explain how to install a GTi Series subwoofer in a general sense, they don’t show the specific...

  • Page 2: Installation Warnings And Tips

    We recommend listening at low levels while driving. JBL accepts no liability for hearing loss, bodily injury or property damage resulting from use or misuse of this product.

  • Page 3: Choosing An Enclosure

    If you wish to use a vented enclosure, we strongly recommend having your authorized JBL dealer build it; or verify that your design is correct if you wish to build it yourself. An optimum vented enclosure is always...

  • Page 4: Enclosure Construction

    OVERHANG DETERMINES REARWARD TOP PLATE MAGNET POLEPIECE / BACKPLATE JBL GTi Series subwoofers employ Differential Drive, a technology developed by JBL Professional. Differential Drive employs two voice coils positioned at opposite ends of the former, each suspended in a separate magnetic gap.
  • Page 5 Differential Drive provides twice the heat-dissipating surface area and two top plates to transfer heat to the magnet-cover fins. DUAL GAP DESIGN Figure 3. JBL dual-gap design CONE TOP COIL IN GAP #1 SPIDER DRIVES CONE...

  • Page 6: Multiple Woofers Connection To Single Amplifier

    CONFIGURING MULTIPLE WOOFERS FOR CONNECTION TO A SINGLE AMPLIFIER Figure 7. Connect two woofers in parallel (with coils in parallel) for a 1.5-ohm load TERMINAL TERMINAL JUMPERS JUMPERS INTACT INTACT BLACK TERMINAL TERMINAL WOOFERS IN PARALLEL (COILS IN PARALLEL) 1.5 OHMS Figure 8.

  • Page 7: Specifications

    GENERAL CARE The loudspeaker grilles may be cleaned with a damp cloth. Do not use any cleaners or solvents on the grilles or the speaker cones. These products are designed for mobile applications and are not intended for connection to the mains.
  • Page 8 250 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 registered trademarks of Harman International Industries, Incorporated. Dacron is a registered trademark of Invista.

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