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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...
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.
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...
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.
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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...
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.
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.