JBL Selenium 15SWT3000

15″ subwoofer · 4 Ω · 1,500 W RMS

Fs 41 HzQts 0.44Vas 2.69 ft³Xmax 0.42″

Recommended box

For a sedan, one sub, 1,500 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 volume1.17 ft³ (33 L)
Qtc0.80
Fc75 Hz
F3 (−3 dB, no cabin gain)71 Hz
Example box (outside)17 5/16″ × 17 5/16″ × 10 9/16″
Open sealed box in designer

Ported

Net volume3.78 ft³ (107 L)
Tuning (Fb)39 Hz
Portslot 4 1/8 × 16 11/16″, 25 1/4″ long
Port velocity at 1,500 W65 ft/s
F3 (−3 dB, no cabin gain)37 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 18 7/8″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs41 Hz
Qts0.44
Qes0.45
Qms16.32
Vas2.69 ft³
Re3.04 Ω
Sd126.2 in²
Xmax0.42″
Vd52.7 in³ calc.
Mms185 g calc.
BL18 T·m calc.
EBP91 — sealed or ported calc.
Sensitivity, 1 W / 1 m92.7 dB calc.

General

Size15″
Voice coils4 Ω
RMS power1,500 W

Mounting dimensions

Ø≈ 15 3/16″cutout ≈ Ø14″mounting depth ≈ 7 1/16″magnet Ø≈ 9 1/16″
Cutout diameter≈ 14″
Mounting depth≈ 7 1/16″

“≈” 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 JBL Selenium 15″ models