Swat REV-15 v.2

15″ subwoofer · dual 2 Ω · 550 W RMS

Fs 35.3 HzQts 0.59Vas 4.16 ft³

Recommended box

For a sedan, one sub, 550 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 volume2.83 ft³ (80 L)
Qtc0.93
Fc56 Hz
F3 (−3 dB, no cabin gain)48 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 12″
Open sealed box in designer

Ported

Net volume4.80 ft³ (136 L)
Tuning (Fb)39 Hz
Portslot 2 9/16 × 16 5/16″, 9 15/16″ long
Port velocity at 550 W64 ft/s
F3 (−3 dB, no cabin gain)35 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 20″
Open ported box in designer
2030405060801001502007278849096102HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs35.3 Hz
Qts0.59
Qes0.654
Qms6
Vas4.16 ft³
Re (one coil)≈ 1.7 Ω
Sd≈ 124 in²
Xmax≈ 0.39″
EBP54 — sealed or ported calc.
Sensitivity, 1 W / 1 m91 dB calc.

General

Size15″
Voice coilsdual 2 Ω
RMS power550 W

Mounting dimensions

Ø15 3/8″cutout Ø13 15/16″mounting depth 7″magnet Ø≈ 9 1/16″
Cutout diameter13 15/16″
Mounting depth7″
Overall diameter15 3/8″

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 15″ models