JL Audio 8W2, 10W2, 12W2 Owners Manual

Subwoofer Specifi cations

8W2

Fs (free-air resonance):

Qts (total speaker “Q”):

Qes (electrical “Q”):

Qms (mechanical “Q”):

Vas (equivalent compliance):

Xmax (linear excursion one-way):

Effi ciency (1W/1m)*:

Sd (effective piston surface area):

Re (DC resistance):

Znom (nominal impedance):

Pt (continuous thermal power handling):

1.52 43.0

0.188 4.8

30.7 0.0198

36.2 Hz

0.490

0.514

10.704

3

ft
in.

87.8 dB

2

in

3.65 Ω
4 Ω

75 Watts

liters

mm

m

7.58 214.7

0.218 5.5

2

51.8 0.0334

*Effi ciency (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”!

10W2

20.9 Hz

0.281

0.322

2.205

3

ft
in.

89.6 dB

2

in

N/A

4 Ω

125 Watts

liters

mm

m

12W2

27.8 Hz

0.329

0.351

5.328

5.83 165.1

0.125 3.2

ft
in.

3

91.8 dB

2

78.5 0.0506

in

2

N/A

4 Ω

125 Watts

mm

Physical Dimensions

8W2

Frame Diameter (A):

Mounting Hole Diameter (B):

Mounting Depth (C):

Overall Depth (D):

Magnet Diameter (E):

Displacement:

8.25

6.9375

3.5

3.9375

4.5

0.025

in.
in.
in.
in.

in.
ft

3

209.55

176.21

100.01

114.3

0.707

88.9

mm
mm
mm
mm

mm

liters

Be sure to allow 0.75 inches (19mm) for pole vent clearance on this driver.

10W2 12W2

Not Available

3

1.272

ft

liters0.045

Not Available

3

1.696

ft

liters0.06

D

A

C

liters

m

E

2

B

Normal Recommended Enclosures (single driver)

Model

Sealed

Enclosure

Ported

Enclosure

Not Recommended

3

1.50 ft

42.5 l

Port

(inside dia. X length)

Sealed Enclosure

•Enclosure dimensions listed are external dimensions which assume the use of 0.75 inch (19mm) thick material. If you are using

0.625 inch (16mm) thick material, subtract 0.25 inches (6.5mm) from each dimension. Do not use material with a thickness of
less than 0.625 inches (16mm).

•Enclosure volumes listed are NET internal volumes. Driver displacement, port displacement and brace displacement must be
added to obtain the fi nal gross volume. The dimensions listed have already taken this into account.

•When using two subwoofers in a common enclosure simply double the required volumes and use two of the recommended ports
(when needed). Likewise, when using three subwoofers in a common enclosure simply triple the required volume and number
of ports (when needed).

8W2

width X height X depthVolume (Net Int.)

15” x 10” x 24.75”

381mm x 254mm x 629mm

2.5” X 4.8”

64mm X 122mm

H

W

D

10W2

width X height X depthVolume (Net Int.)

Not Recommended

3

2.50 ft

70.8 l

17” x 12” x 29”

432mm x 305mm x 737mm

3” X 6.3”

76mm X 160mm

Ported Enclosure

12W2

width X height X depthVolume (Net Int.)

Not Recommended

3

3.50 ft

99.1 l

W

20” x 14” x 28.5”

508mm x 356mm x 724mm

4” X 6.1”

102mm X 155mm

H

D

Wired directly to the amplifi er:

A single 4Ω speaker will present a 4Ω load.

With speakers wired in parallel:

Two 4Ω speakers will present a 2Ω load.

With speakers wired in parallel:

Three 4Ω speakers will present a 1.3Ω load.

•Do NOT use different impedance speakers when using multiple subwoofers!

•JL Audio recommends using subwoofers as part of a bi-amplifi ed system using high quality satellite speakers like our Evolution line

of coaxial and component speakers. We do not recommend the use of passive crossover components (coils) on subwoofers. These
components may adversely affect the performance of a subwoofer.

•When dealing with exceedingly long port lengths, we recommend the use of JL Audio’s Flex-Port System. The Flex-Port tubing is
fl exible, allowing it to fi t in otherwise tight locations. The Port mouths provide not only a convenient method of securing the port,

but a smooth, rounded edge for the port termination as well.