2
J L A U D IO
12TW1-2 / 12TW1-4
S UB WOOF E R
1 2 T W1 -2
1 2 T W1 -4
Free Air Resonance (Fs):
35.06 Hz
32.35 Hz
Electrical “Q” (Qes):
0.610
0.555
Mechanical “Q” (Qms):
10.662
11.066
Total Speaker “Q”
(Qts):
0.577
0.529
Equivalent Compliance (Vas):
1.008 ft
3
28.54 litres
1.189 ft
3
33.67 litres
One-way, Linear Excursion (Xmax)*:
0.40 in
10 mm
0.40 in
10 mm
Efficiency (1W/1m)**:
85.07 dB SPL
85.15 dB SPL
Effective Piston Area (Sd):
67.608 in
2
0.0436 m
2
67.608 in
2
0.0436 m
2
DC Resistance (Re):
2.430 ohm
3.514 ohm
Nominal Impedance:
2 ohm
4 ohm
Power Handling (continuous):
300 W
300 W
* 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”!
A
C
D
B
E
F
J L A U D IO
12TW1-2 / 12TW1-4
U.S. PATENTS: #6,095,280 #8,374,379 #5,734,132 | Other U.S. & Foreign patents pending.
All specifications are subject to change without notice.
1 2 T W1 S UB WOOF E R P HY S IC AL
S P E C IF IC AT IONS
Nominal Diameter:
12.0 in.
300 mm
Overall Diameter (A):
12.375 in.
314 mm
Mounting Hole Diameter (B):
11.0625 in
281 mm
Bolt Hole Circle (C):
11.7 in.
297 mm
Magnet Diameter (D):
5.71 in.
145 mm
Mounting Depth (E):
4.62 in.
117 mm
Frontal Grille Protrusion (F):
0.87 in
22 mm
Net Weight:
16.5 lbs
7.5 kg
Driver Displacement:
0.072 ft
3
2.04 litres
