Dynamic Motor Analysis (DMA): DMA is a JL Audio proprietary
method of improving dynamic motor behavior. As a result of DMA optimization,
the woofer's motor remains linear in motor force over a long excursion range,
and maintains a stable fixed magnetic field in the gap over a wide power range.
The result is reduced distortion, faithfully reproduced transients, and tight,
clean, articulate bass.
Elevated Frame Cooling: The elevated frame design of the
12WXv2 delivers cool air through slots directly above the top-plate to the voice
coil. This not only enhances power handling, but also sound quality by minimizing
dynamic parameter shifts and power compression.
Rear Gasket: The woofer has an integrated foam rear gasket
which provides an optimal seal when installing into the enclosure.
Sealed Box Volume: JL Audio recommends a 1-3/8 cubic foot
sealed box. A diagram is provided in the owner's manual for a sealed box with
external dimensions of 16" W x 19" H x 11-3/4" D, assuming 3/4"
thick material. (If using 5/8" thick materials, you should subtract 1/4"
from each dimension.)
Ported Box Volume: JL Audio recommends a 1-3/4 cubic foot ported
box. A diagram is provided in the owner's manual for a ported box with external
dimensions of 18-1/5" W x 14-3/4" H x 16-1/2" D, assuming 3/4" thick
material. (If using 5/8" thick materials, you should subtract 1/4" from
each dimension.) A single 4" diameter x 18-3/4" long port is recommended,
resulting in a tuning frequency of 30 Hz.
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