JL Audio 12WX User Manual
Page 3
JL AUDIO
12WX-4
3
SUBWOOFER
RECOMMENDED SEALED ENCLOSURE
Volume
(net int.)
External Dimensions
(Width x Height x Depth)
F3
(Hz)
Fc
(Hz)
Qtc
12WX-4
1.375 ft
3
38.94 liters
16 in. x 19 in. x 11.75 in.
406 mm x 483 mm x 298 mm
39.0
50.78
1.04
All specifications are subject to change without notice.
SUBWOOFER
RECOMMENDED PORTED ENCLOSURE
Volume
(net int.)
Enclosure External Dimensions
(Width x Height x Depth)
Round Port Specs
(Inner Diameter x Length)
Port Information
Tune to:
(Hz)
F3
(Hz)
12WX-4
1.750 ft
3
39.56 liters
18.5 in. x 14.75 in. x 16.5 in.
470 mm x 375 mm x 419 mm
4 in. x 18.75 in.
102 mm x 476 mm
Round port requires a 90˚ elbow
to fit in the specified enclosure
30
39
!!
C
A
UTION
!!
Prolonged exposure to sound pressure levels in excess of 100dB can cause permanent hearing loss. This high-performance
speaker can exceed this level. Please exercise restraint in its operation in order to preserve your ability to enjoy its fidelity.
When installing a subwoofer in your vehicle, it is extremely important to secure the enclosure firmly. We recommend
bolting the enclosure through the metal of the floorpan or the frame of the vehicle with large diameter washers
for reinforcement. If an enclosure is not firmly attached, it can become a projectile in a collision. This is particularly
important in a hatchback, station wagon, sports utility vehicle, or van.
• The enclosure recommendations listed are external
dimensions which assume the use of 3/4" (19mm)
thick material. If you are using 5/8" (16mm) thick
material, subtract 1/4" (6.5mm) from each dimension.
Do not use any material with a thickness of less than
5/8" (16mm) as this may compromise the rigidity of
the enclosure.
• All enclosure volumes listed are net internal
volumes! Box volume displacement, port
displacement and brace displacement must be
added to obtain the final gross internal volume. All
enclosure dimensions listed have already taken this
into account.
• When using two subwoofers in a common
enclosure simply double the required volume and,
in the case of a ported enclosure, use two times the
recommended port(s).
• We recommend the use of this speaker in a bi-amplified
system using high-quality satellite speakers and
amplifiers. We do not recommend the use of this
subwoofer with a passive crossover (coil), as this type of
device will adversely affect performance.