JBL W12GTIMKII User manual

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 won’tsettle for anything
less than “live” at home or on the go.
Just as every performance automobile
manufacturer has a racing division to test
cutting-edge technology and engineering
capabilities, the GTi Series pushes the limits
of JBL engineering and technology.The three
Differential Drive®*Design GTi subwoofers are
the result of extensive engineering with the goal
of delivering the best subs money can buy. If
you are looking for the absolutely best in low-
frequency reproduction, then look no further.
DIFFERENTIAL DRIVE®
DESIGN
The JBL Differential Drive Design is an
important advancement in subwoofer motor
technology. This design enables each GTi
subwoofer to use a pair of smaller 3"-diameter
voice coils. This dual-coil configuration provides
significantly higher power handling through
increased surface area, and maintains the
low-moving mass not possible with larger coils.
KEVLAR®-IMPREGNATED-
PAPER WOOFER CONES
Using this combination has been chosen for its
high strength-to-weight ratio, and is formed
using a proprietary manufacturing process. Its
stiffness relieves stress concentrations that may
accumulate at the base of the cone in high-
power and high-pressure applications.
NITRILE-BUTYLENE-
RUBBER, ONE-PIECE
SURROUND AND
GASKET
Using this material results in an optimal blend
of elasticity and internal damping. The size of
the roll is optimized to offer good long-throw
linearity with the proper amount of control
and stability at excursion limits.
PROGRESSIVE SPIDER
This allows better control at excursion limits
than a linear spider. The benefit is reduced
distortion at high output levels.
VENTED POLEPIECES
Additional cooling is provided to the motor
structure. The subwoofer’s thermal capabilities
are augmented, increasing power handling.
*U.S. patent no. 5,748,760
and other patents pending

SPECS
GTi SERIES
Features, specifications and appearance are subject to
change without notice.
JBL and Differential Drive are trademarks of Harman
International Industries, Incorporated, registered in the
United States and/or other countries.
Kevlar is a registered trademark of E.I. du Pont de
Nemours and Company.
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. GTISUBPI3/08
Harman Consumer Group, Inc.
250 Crossways Park Drive
Woodbury, NY 11797
516.255.4JBL (4525) Fax: [phone]
www.jbl.com
THE OFFICIAL BRAND
OF LIVE MUSIC.
W12GTi MKII
12" (300mm) Differential Drive®Design Subwoofer
• Die-cast vented basket
•Kevlar®
-impregnated-paper woofer cone
• Nitrile-butylene surround
• Dual 6-ohm voice coils
• Sensitivity: 91dB
• Power handling, RMS: 700W
• Power handling, peak: 4000W
• Cutout diameter: 11" (279mm)
• Mounting depth: 10-1/4" (260mm)
W15GTi MKII
15" (380mm) Differential Drive®Design Subwoofer
• Die-cast vented basket
•Kevlar®
-impregnated-paper woofer cone
• Nitrile-butylene surround
• Dual 6-ohm voice coils
• Sensitivity: 92dB
• Power handling, RMS: 800W
• Power handling, peak: 5000W
• Cutout diameter: 13-7/8" (352mm)
• Mounting depth: 10-1/4" (260mm)
W10GTi MKII
10" (250mm) Differential Drive®Design Subwoofer
•Die-cast vented basket
•Kevlar®
-impregnated-paper woofer cone
•Nitrile-butylene surround
•Dual 6-ohm voice coils
•Sensitivity: 90dB
•Power handling, RMS: 600W
•Power handling, peak: 3000W
•Cutout diameter: 9-3/16" (233mm)
•Mounting depth: 9-1/8" (232mm)