Swat EXE-P12D2

12″ subwoofer · dual 2 Ω · 2,600 W RMS

Fs 34.5 HzQts 0.49Vas 0.95 ft³

Recommended box

For a sedan, one sub, 2,600 W. It’s the same math as the designer’s step-by-step mode, where you can fit the box to your space, vehicle and amp and get plans, a cut sheet and DXF.

Sealed

Net volume0.83 ft³ (23.5 L)
Qtc0.72
Fc51 Hz
F3 (−3 dB, no cabin gain)52 Hz
Example box (outside)14 9/16″ × 14 9/16″ × 10 3/4″
Open sealed box in designer

Ported

Net volume1.84 ft³ (52 L)
Tuning (Fb)31 Hz
Portslot 2 3/8 × 14 5/16″, 46 1/2″ long
Port velocity at 2,600 W108 ft/s
F3 (−3 dB, no cabin gain)28 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 13 3/4″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs34.5 Hz
Qts0.49
Qes0.534
Qms6
Vas0.95 ft³
Re (one coil)≈ 1.7 Ω
Sd≈ 76 in²
Xmax≈ 0.39″
EBP65 — sealed or ported calc.
Sensitivity, 1 W / 1 m85.2 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power2,600 W

Mounting dimensions

Ø12 15/16″cutout Ø11 7/16″mounting depth 8 1/4″magnet Ø9″
Cutout diameter11 7/16″
Mounting depth8 1/4″
Overall diameter12 15/16″
Magnet diameter9″

Only Qts is published — Qms assumed to be 6 and Qes calculated (barely affects box design).

“≈” means the value isn’t in the spec sheet and a typical value for the size is used; “calc.” means it’s calculated from the published parameters. Check the manufacturer’s spec sheet before you build.

Data sources

Other Swat 12″ models