Swat SW S12D2

12″ subwoofer · dual 2 Ω · 1,000 W RMS

Fs 45.3 HzQts 1.25Vas 1.43 ft³

Recommended box

For a sedan, one sub, 1,000 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 volume1.73 ft³ (49 L)
Qtc1.69
Fc61 Hz
F3 (−3 dB, no cabin gain)43 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 8 3/4″
Open sealed box in designer

Ported

Net volume2.93 ft³ (83 L)
Tuning (Fb)47 Hz
Portslot 2 3/4 × 14 5/16″, 11 1/8″ long
Port velocity at 1,000 W62 ft/s
F3 (−3 dB, no cabin gain)37 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 14 13/16″
Open ported box in designer
2030405060801001502007278849096102HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs45.3 Hz
Qts1.25
Qes1.859
Qms3.79
Vas1.43 ft³
Re (one coil)≈ 1.7 Ω
Sd≈ 76 in²
Xmax≈ 0.39″
EBP24 — suits sealed calc.
Sensitivity, 1 W / 1 m85.1 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power1,000 W

Mounting dimensions

Ø12 3/16″cutout Ø11 5/16″mounting depth 5 3/4″magnet Ø≈ 7 3/8″
Cutout diameter11 5/16″
Mounting depth5 3/4″
Overall diameter12 3/16″

“≈” 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