Kicx HeadShot Q412S (2+2)

12″ subwoofer · dual 2 Ω · 3,000 W RMS

Fs 42 HzQts 0.37Vas 0.55 ft³Xmax 0.81″

Recommended box

For a sedan, one sub, 3,000 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 volume0.81 ft³ (23 L)
Qtc0.48
Fc54 Hz
F3 (−3 dB, no cabin gain)91 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 11 3/16″
Open sealed box in designer

Ported

Net volume1.55 ft³ (44 L)
Tuning (Fb)31 Hz
Portround port Ø2 1/2″, 7 1/16″ long
Port velocity at 3,000 W766 ft/s
F3 (−3 dB, no cabin gain)62 Hz
Example box (outside)22 1/8″ × 15 3/4″ × 11 1/4″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs42 Hz
Qts0.37
Qes0.416
Qms3.4
Vas0.55 ft³
Re (one coil)1.8 Ω
Sd80.9 in²
Xmax0.81″
Vd65.3 in³ calc.
Mms355 g calc.
BL20.1 T·m calc.
EBP101 — suits ported calc.
Sensitivity, 1 W / 1 m86.4 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power3,000 W

Mounting dimensions

Ø12 11/16″cutout Ø11 1/8″mounting depth 8 11/16″magnet Ø≈ 7 3/16″
Cutout diameter11 1/8″
Mounting depth8 11/16″
Overall diameter12 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 Kicx 12″ models