SUBWOOFER: 8W3-D2 8W3-D4 8W3-D6 10W3-D2 10W3-D4 10W3-D6
Free Air Resonance (Fs): 34.3 Hz 35.3Hz 35.1 Hz 28.8 Hz 29.7 Hz 30.8 Hz
Electrical “Q” (Qes): 0.428 0.516 0.508 0.503 0.546 0.563
Mechanical “Q” (Qms): 6.850 6.850 6.850 8.260 8.260 8.260
Total Speaker “Q” (Qts): 0.403 0.480 0.473 0.474 0.512 0.527
Equiv. Compliance (Vas): 0.79 ft
3
0.79 ft
3
0.79 ft
3
1.66 ft
3
1.66 ft
3
1.66 ft
3
22.4 litres 22.4 litres 22.4 litres 38.6 litres 38.6 litres 38.6 litres
One-way, Linear Excursion: 0.39 in 0.39 in 0.42 in 0.549 in 0.579 in 0.513 in
(Xmax)* 9.9 mm 9.9 mm 10.7 mm 13.9 mm 14.7 mm 13.0 mm
Efficiency (1W/1m)**: 85.0 dB 84.6 dB 84.6 dB 85.3 dB 85.3 dB 85.6 dB
Effective Piston Area (Sd): 33.2 in
2
33.2 in
2
33.2 in
2
53.5 in
2
53.5 in
2
53.5 in
2
0.0214 m
2
0.0214 m
2
0.0214 m
2
0.0345 m
2
0.0345 m
2
0.0345 m
2
DC Resistance (Re)***: 3.39Ω 6.56Ω 10.78Ω 3.30Ω 6.82Ω 10.98Ω
Nominal Impedance: Dual 2Ω Dual 4Ω Dual 6Ω Dual 2Ω Dual 4Ω Dual 6Ω
Power Handling (continuous): 125W 125W 125W 250W 250W 250W
Mounting Depth: 4.25 in 4.25 in 4.25 in 5.8125 in 5.8125 in 5.8125 in
108 mm 108 mm 108 mm 148 mm 148 mm 148 mm
Mounting Hole Diameter: 7.0 in 7.0 in 7.0 in 9.125 in 9.125 in 9.125 in
178 mm 178 mm 178 mm 232 mm 232 mm 232 mm
Driver Displacement: 0.035 ft
3
0.035 ft
3
0.035 ft
3
0.050 ft
3
0.050 ft
3
0.050 ft
3
1.0 litres 1.0 litres 1.0 litres 1.4 litres 1.4 litres 1.4 litres
SUBWOOFER SEALED ENCLOSURE PORTED ENCLOSURE
Volume External Dimensions Volume External Dimensions Port
(net int.) (Width x Height x Depth) (net int.) (Width x Height x Depth) (Inside Dia. x Length)
8W3-D2
0.330 ft
3
16" x 9" x 7.25" 0.75 ft
3
15" x 10" x 13.75" 2.5" x 12.7"
9.35 litres 406mm x 229mm x 184mm 21.2 litres 381mm x 254mm x 349mm 64mm x 323mm
8W3-D4
0.375 ft
3
16" x 9" x 8" 0.75 ft
3
15" x 10" x 13.75" 2.5" x 11.9"
10.6 litres 406mm x 229mm x 203mm 21.2 litres 381mm x 254mm x 349mm 64mm x 302mm
8W3-D6
0.375 ft
3
16" x 9" x 8" 0.75 ft
3
15" x 10" x 13.75" 2.5" x 12.1"
10.6 litres 406mm x 229mm x 203mm 21.2 litres 381mm x 254mm x 349mm 64mm x 307mm
10W3-D2
0.625 ft
3
18" x 11" x 9" 1.00 ft
3
16" x 11" x 15.5" 3.0" x 14.5"
17.7 litres 457mm x 279mm x 229mm 28.3 litres 406mm x 279mm x 394mm 76mm x 368mm
10W3-D4
0.625 ft
3
18" x 11" x 9" 1.125 ft
3
16" x 11" x 17" 3.0" x 12.8"
17.7 litres 457mm x 279mm x 229mm 31.9 litres 406mm x 279mm x 432mm 76mm x 325mm
10W3-D6
0.75 ft
3
18" x 11" x 10.5" 1.25 ft
3
16" x 11" x 18.5" 3.0" x 11.3"
21.2 litres 457mm x 279mm x 267mm 35.4 litres 406mm x 279mm x 470mm 76mm x 287mm
RECOMMENDED ENCLOSURES
CAUTION
2 JL AUDIO 8W3/10W3 JL AUDIO 8W3/10W3 3
SUBWOOFER SPECIFICATIONS
*Xmax specifications are derived via one-way voice coil overhang method with no correction factors applied.
**Efficiency (1W/1m) is not
an accurate indicator of a subwoofer’s output capability and should not be used as a comparison to other subwoofers to
determine which one is “louder”.
***Re (DC resistance) is measured with the voice coils in series, for parallel-wired specification divide Re by 4. All other specifications remain the same.
• The enclosure recommendations listed above
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 above are net
internal volumes! Driver displacement, port
displacement and brace displacement must be
added to obtain the final gross internal volume.
All enclosure dimensions above have already
taken this into acount.
• 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). Likewise,
when using three subwoofers in a common
enclosure simply triple the required volume
and, in the case of a ported enclosure, use
three times the recommended port(s).
• We recommend the use of this speaker in a
bi-amplified system using high-quality satellite
speakers and a high-quality amplifier. We do
not recommend the use of this subwoofer
with a passive crossover (coil), as this type of
device will adversely affect performance.
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.
All specifications are subject to change without notice.
