10W2
20.9 Hz
0.281
0.322
2.205
7.58
214.7
0.218
5.5
89.6 dB
51.8
0.0334
N/A
4
Ω
125 Watts
12W2
27.8 Hz
0.329
0.351
5.328
5.83
165.1
0.125
3.2
91.8 dB
78.5
0.0506
N/A
4
Ω
125 Watts
8W2
36.2 Hz
0.490
0.514
10.704
1.52
43.0
0.188
4.8
87.8 dB
30.7
0.0198
3.65
Ω
4
Ω
75 Watts
Subwoofer Specifi cations
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):
*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”!
ft
3
liters
in.
mm
ft
3
liters
in.
mm
ft
3
liters
in.
mm
Be sure to allow 0.75 inches (19mm) for pole vent clearance on this driver.
Physical Dimensions
Frame Diameter (A):
Mounting Hole Diameter (B):
Mounting Depth (C):
Overall Depth (D):
Magnet Diameter (E):
Displacement:
in.
mm
in.
mm
in.
mm
in.
mm
in.
mm
ft
3
liters
A
B
C
D
E
in
2
m
2
in
2
m
2
in
2
m
2
8.25
6.9375
3.5
3.9375
4.5
0.025
209.55
176.21
88.9
100.01
114.3
0.707
8W2
10W2
12W2
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).
Ported Enclosure
H
D
W
H
D
W
Normal Recommended Enclosures
(single driver)
Port
(inside dia. X length)
Model
Sealed
Enclosure
Ported
Enclosure
8W2
15” x 10” x 24.75”
381mm x 254mm x 629mm
2.5” X 4.8”
64mm X 122mm
1.50 ft
3
width X height X depth
Volume (
Net Int.
)
42.5 l
10W2
17” x 12” x 29”
432mm x 305mm x 737mm
3” X 6.3”
76mm X 160mm
2.50 ft
3
width X height X depth
Volume (
Net Int.
)
70.8 l
12W2
20” x 14” x 28.5”
508mm x 356mm x 724mm
4” X 6.1”
102mm X 155mm
3.50 ft
3
width X height X depth
Volume (
Net Int.
)
99.1 l
Not A
vailable
Not A
vailable
Not Recommended
Not Recommended
Not Recommended
ft
3
liters
0.045
1.272
ft
3
liters
0.06
1.696
