JL AUDIO
12W1v2-4/12W1v2-8
3
SUBWOOFER
RECOMMENDED SEALED ENCLOSURES
Volume
(net int.)
External Dimensions
(
W
idth x
H
eight x
D
epth)
F3
(Hz)
Fc
(Hz)
Qtc
12W1v2-4
1.25 cu. ft.
35.4 litres
17.5 in. x 15.5 in. x 11.5 in.
444.5 mm x 394 mm x 292 mm
41.7 41.9
0.733
12W1v2-8
1.25 cu. ft.
35.4 litres
17.5 in. x 15.5 in. x 11.5 in.
444.5 mm x 394 mm x 292 mm
40.7
43.4
0.796
All specifications are subject to change without notice.
SUBWOOFER
RECOMMENDED PORTED ENCLOSURES
Volume
(net int.)
Enclosure External Dimensions
(
W
idth x
H
eight x
D
epth)
Slot Port Internal Dimensions
(
S
lot
W
idth x
S
lot
H
eight x
S
lot
L
ength)
Tune to:
(Hz)
F3
(Hz)
12W1v2-4
1.75 cu. ft.
49.5 litres
19.75 in. x 16 in. x 17 in.
502 mm x 406.5 mm x 432 mm
1.5 in. x 14.5 in. x 33.75 in.
38 mm x 368 mm x 857 mm
28.0
29.5
12W1v2-8
1.75 cu. ft.
49.5 litres
19.75 in. x 16 in. x 17 in.
502 mm x 406.5 mm x 432 mm
1.5 in. x 14.5 in. x 33.75 in.
38 mm x 368 mm x 857 mm
28.0
30.2
“EL” (Port Extension Length):
12W1v2: 14.5 in. (368 mm)
!!
CA
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.
s4HE ENCLOSURE RECOMMENDATIONS LISTED ARE
external
DIMENSIONS WHICH ASSUME THE USE OF
3/4" (19mm)
THICK MATERIAL )F YOU ARE USING
5/8" (16mm)
thick
MATERIALSUBTRACT
1/4" (6.5mm)
FROMEACHDIMENSION
$ONOTUSEANYMATERIALWITHATHICKNESSOFLESSTHAN
5/8" (16mm)
AS THIS MAY COMPROMISE THE RIGIDITY OF
the enclosure.
s
All enclosure volumes listed are net internal volumes!
"OX VOLUME DISPLACEMENT PORT DISPLACEMENT AND
BRACEDISPLACEMENTMUSTBEADDEDTOOBTAINTHEFINAL
GROSSINTERNALVOLUME!LLENCLOSUREDIMENSIONSLISTED
HAVEALREADYTAKENTHISINTOACCOUNT
s7HEN USING
two
SUBWOOFERS IN A COMMON
ENCLOSURE SIMPLY
double
THE REQUIRED VOLUME AND
INTHECASEOFAPORTEDENCLOSUREUSE
two times
the
recommended port(s).
s7E RECOMMEND THE USE OF THIS SPEAKER IN A
bi-
amplified system
USINGHIGHQUALITYSATELLITESPEAKERS
ANDAMPLIFIERS7EDONOTRECOMMENDTHEUSEOF
THISSUBWOOFERWITHA
passive crossover (coil)
ASTHIS
TYPEOFDEVICEWILLADVERSELYAFFECTPERFORMANCE
