JBL Selenium 15SWT5600

15″ subwoofer · 4 Ω · 2,800 W RMS

Fs 51 HzQts 0.55Vas 1.55 ft³Xmax 0.43″

Recommended box

For a sedan, one sub, 2,800 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 volume1.41 ft³ (40 L)
Qtc0.80
Fc74 Hz
F3 (−3 dB, no cabin gain)69 Hz
Example box (outside)17 5/16″ × 17 5/16″ × 12 1/4″
Open sealed box in designer

Ported

Net volume4.24 ft³ (120 L)
Tuning (Fb)40 Hz
Portslot 5 7/8 × 16 11/16″, 30 11/16″ long
Port velocity at 2,800 W71 ft/s
F3 (−3 dB, no cabin gain)36 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 23 1/16″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs51 Hz
Qts0.55
Qes0.57
Qms18.27
Vas1.55 ft³
Re3.2 Ω
Sd130.2 in²
Xmax0.43″
Vd56.4 in³ calc.
Mms221 g calc.
BL19.9 T·m calc.
EBP89 — sealed or ported calc.
Sensitivity, 1 W / 1 m92.1 dB calc.

General

Size15″
Voice coils4 Ω
RMS power2,800 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