Swat EXE-P12D1

12″ subwoofer · dual 1 Ω · 2,600 W RMS

Fs 36.1 HzQts 0.53Vas 0.87 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)
Qtc0.76
Fc52 Hz
F3 (−3 dB, no cabin gain)51 Hz
Example box (outside)14 9/16″ × 14 9/16″ × 10 3/4″
Open sealed box in designer

Ported

Net volume2.08 ft³ (59 L)
Tuning (Fb)30 Hz
Portslot 2 3/4 × 14 5/16″, 51 1/8″ long
Port velocity at 2,600 W99 ft/s
F3 (−3 dB, no cabin gain)27 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 15 13/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs36.1 Hz
Qts0.53
Qes0.581
Qms6
Vas0.87 ft³
Re (one coil)≈ 0.85 Ω
Sd≈ 76 in²
Xmax≈ 0.39″
EBP62 — sealed or ported calc.
Sensitivity, 1 W / 1 m85 dB calc.

General

Size12″
Voice coilsdual 1 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