JBL W12GTIMKII Brochure & Specs

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't settle 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.
- IMPREGNATED-
KEVLAR ®
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.
®