Kicx HeadShot Q312 (1+1)

12″ subwoofer · dual 1 Ω · 2,000 W RMS

Fs 42 HzQts 0.37Vas 0.71 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 volume0.74 ft³ (21 L)
Qtc0.52
Fc59 Hz
F3 (−3 dB, no cabin gain)90 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 10 7/16″
Open sealed box in designer

Ported

Net volume1.59 ft³ (45 L)
Tuning (Fb)33 Hz
Portslot 2 3/16 × 14 5/16″, 43 5/16″ long
Port velocity at 2,000 W101 ft/s
F3 (−3 dB, no cabin gain)31 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 12 1/8″
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
Qes0.443
Qms2.2
Vas0.71 ft³
Re (one coil)0.9 Ω
Sd82.2 in²
Xmax0.79″
Vd64.7 in³ calc.
Mms286 g calc.
BL12.4 T·m calc.
EBP95 — sealed or ported calc.
Sensitivity, 1 W / 1 m87.2 dB calc.

General

Size12″
Voice coilsdual 1 Ω
RMS power2,000 W

Mounting dimensions

Ø12 11/16″cutout Ø11 1/8″mounting depth 7 11/16″magnet Ø8 1/2″
Cutout diameter11 1/8″
Mounting depth7 11/16″
Overall diameter12 11/16″
Magnet diameter8 1/2″

“≈” 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