Swat GLK-15D2

15″ subwoofer · dual 2 Ω · 1,300 W RMS

Fs 35.6 HzQts 0.54Vas 2.42 ft³

Recommended box

For a sedan, one sub, 1,300 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 volume2.01 ft³ (57 L)
Qtc0.80
Fc53 Hz
F3 (−3 dB, no cabin gain)50 Hz
Example box (outside)17 5/16″ × 17 5/16″ × 16 3/8″
Open sealed box in designer

Ported

Net volume4.80 ft³ (136 L)
Tuning (Fb)32 Hz
Portslot 3 15/16 × 16 11/16″, 29″ long
Port velocity at 1,300 W63 ft/s
F3 (−3 dB, no cabin gain)29 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 22 13/16″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs35.6 Hz
Qts0.54
Qes0.593
Qms6
Vas2.42 ft³
Re (one coil)≈ 1.7 Ω
Sd≈ 124 in²
Xmax≈ 0.39″
EBP60 — sealed or ported calc.
Sensitivity, 1 W / 1 m89.2 dB calc.

General

Size15″
Voice coilsdual 2 Ω
RMS power1,300 W

Mounting dimensions

Ø15 1/2″cutout Ø14″mounting depth 7 13/16″magnet Ø7 3/8″
Cutout diameter14″
Mounting depth7 13/16″
Overall diameter15 1/2″
Magnet diameter7 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