Rockville W15K5S4

15″ subwoofer · 4 Ω · 500 W RMS

Fs 36.1 HzQts 0.62Vas 3.79 ft³Xmax 0.31″

Recommended box

For a sedan, one sub, 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 volume2.83 ft³ (80 L)
Qtc0.95
Fc55 Hz
F3 (−3 dB, no cabin gain)47 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 12″
Open sealed box in designer

Ported

Net volume4.84 ft³ (137 L)
Tuning (Fb)39 Hz
Portslot 2 9/16 × 16 5/16″, 9 13/16″ long
Port velocity at 500 W62 ft/s
F3 (−3 dB, no cabin gain)34 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 20 1/16″
Open ported box in designer
2030405060801001502007278849096102HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs36.1 Hz
Qts0.62
Qes0.68
Qms6.96
Vas3.79 ft³
Re3.52 Ω
Sd124.7 in²
Xmax0.31″
Vd39.3 in³ calc.
Mms166 g calc.
BL14 T·m calc.
EBP53 — sealed or ported calc.
Sensitivity, 1 W / 1 m90.7 dB calc.

General

Size15″
Voice coils4 Ω
RMS power500 W

Mounting dimensions

Ø≈ 15 1/8″cutout Ø13 15/16″mounting depth 6″magnet Ø6 11/16″
Cutout diameter13 15/16″
Mounting depth6″
Magnet diameter6 11/16″

“≈” 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 Rockville 15″ models