Massive Audio KILOX154

15″ subwoofer · dual 4 Ω · 1,000 W RMS

Fs 36 HzQts 0.62Vas 1.66 ft³Xmax 0.55″

Recommended box

For a sedan, one sub, 1,000 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 volume2.44 ft³ (69 L)
Qtc0.80
Fc47 Hz
F3 (−3 dB, no cabin gain)44 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 10 5/8″
Open sealed box in designer

Ported

Net volume4.87 ft³ (138 L)
Tuning (Fb)29 Hz
Portslot 3 9/16 × 16 5/16″, 31 3/8″ long
Port velocity at 1,000 W63 ft/s
F3 (−3 dB, no cabin gain)25 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 23 7/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs36 Hz
Qts0.62
Qes0.71
Qms4.68
Vas1.66 ft³
Re (one coil)3.6 Ω
Sd125.6 in²
Xmax0.55″
Vd69.2 in³ calc.
Mms387 g calc.
BL21.1 T·m calc.
EBP51 — sealed or ported calc.
Sensitivity, 1 W / 1 m86.9 dB calc.

General

Size15″
Voice coilsdual 4 Ω
RMS power1,000 W

Mounting dimensions

Ø15 7/16″cutout Ø13 7/8″mounting depth 7 15/16″magnet Ø≈ 9″
Cutout diameter13 7/8″
Mounting depth7 15/16″
Overall diameter15 7/16″

“≈” 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 Massive Audio 15″ models