2 JL AUDIO 12TW3-D4
SUBWOOFER 12TW3-D4
Free Air Resonance (Fs):
26.460 Hz
Electrical “Q” (Qes):
0.558
Mechanical “Q” (Qms):
10.766
Total Speaker “Q” (Qts):
0.531
Equivalent Compliance (Vas):
1.72 ft
3
48.73 litres
One-way, Linear Excursion (Xmax)*:
0.60 in
15.2 mm
Efficiency (1W/1m)**:
84.11 dB SPL
Effective Piston Area (Sd):
83.517 in
2
0.0539 m
2
DC Resistance (Re)***:
9.280 ohm
Nominal Impedance:
Dual 4-ohm voice coils
(wire as a 2 or 8 ohm load)
Power Handling (continuous):
400 W
12TW3 SUBWOOFER
PHYSICAL SPECIFICATIONS
Nominal Diameter:
12.0 in
300 mm
Overall Major Diameter (A1):
Overall Minor Diameter (A2):
13.2 in. / 335 mm
12.5 in. / 318 mm
Mounting Hole Diameter (B):
11.625 in.
295 mm
Bolt Hole Circle (C):
12.5 in.
318 mm
Magnet Diameter (D):
6.125 in
156 mm
Mounting Depth (E):
3.5 in
89 mm
Net Weight:
14.9 lbs
6.8 Kg
Driver Displacement:
0.029 ft
3
0.82 liters
JL AUDIO 12TW3-D4
U.S. PATENTS: 6,095,280 #5,734,132 • Other U.S. & Foreign Patents Pending
All specifications are subject to change without notice.
* 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.
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