Kicx HeadShot Q315 (2+2)

15″ subwoofer · dual 2 Ω · 2,000 W RMS

Fs 36 HzQts 0.38Vas 1.52 ft³Xmax 0.79″
The published specs don’t add up:

Recommended box

For a sedan, one sub, 2,000 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 volume1.32 ft³ (37.5 L)
Qtc0.56
Fc53 Hz
F3 (−3 dB, no cabin gain)73 Hz
Example box (outside)16 15/16″ × 16 15/16″ × 12 3/16″
Open sealed box in designer

Ported

Net volume2.40 ft³ (68 L)
Tuning (Fb)32 Hz
Portslot 3 1/8 × 16 5/16″, 49 7/8″ long
Port velocity at 2,000 W69 ft/s
F3 (−3 dB, no cabin gain)31 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 16 5/8″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs36 Hz
Qts0.38
Qes0.455
Qms2.31
Vas1.52 ft³
Re (one coil)1.8 Ω
Sd126.2 in²
Xmax0.79″
Vd99.3 in³ calc.
Mms427 g calc.
BL19.5 T·m calc.
EBP79 — sealed or ported calc.
Sensitivity, 1 W / 1 m88.4 dB calc.

General

Size15″
Voice coilsdual 2 Ω
RMS power2,000 W

Mounting dimensions

Ø15 7/16″cutout Ø13 3/4″mounting depth 9 3/4″magnet Ø≈ 8 15/16″
Cutout diameter13 3/4″
Mounting depth9 3/4″
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 Kicx 15″ models