JBL Selenium Matador 15SW20A 4+4

15″ subwoofer · dual 4 Ω · 600 W RMS

28.6 HzFs, resonance
0.87Qts
6.54 ft³Vas
0.35″Xmax
600 WRMS

Recommended box

For a sedan, one sub, 600 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

smaller, tighter
2.93 ft³ (83 L)
Net volume
Qtc1.56
Fc51 Hz
F3 (−3 dB, no cabin gain)37 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 12 1/8″
Open sealed box in designer

Ported

deeper, louder
4.98 ft³ (141 L)
Net volume
Tuning (Fb)41 Hz
Portslot 2 9/16 × 16 11/16″, 8 1/4″ long
Port velocity at 600 W63 ft/s
F3 (−3 dB, no cabin gain)35 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 20″
Open ported box in designer
2030405060801001502007278849096102HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs28.6 Hz
Qts0.87
Qes0.92
Qms15.06
Vas6.54 ft³
Re (one coil)3.25 Ω
Sd128.7 in²
Xmax0.35″
Vd45.6 in³ calc.
Mms163 g calc.
BL10.2 T·m calc.
EBP31 — suits sealed calc.
Sensitivity, 1 W / 1 m88.7 dB calc.

General

Size15″
Voice coilsdual 4 Ω
RMS power600 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