Kicx GX12 (2+2)

12″ subwoofer · dual 2 Ω · 700 W RMS

Fs 35 HzQts 1.30Vas 1.30 ft³

Recommended box

For a sedan, one sub, 700 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 volume1.73 ft³ (49 L)
Qtc1.72
Fc46 Hz
F3 (−3 dB, no cabin gain)32 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 20 15/16″
Open sealed box in designer

Ported

Net volume2.97 ft³ (84 L)
Tuning (Fb)37 Hz
Portslot 2 3/16 × 14 5/16″, 15 13/16″ long
Port velocity at 700 W64 ft/s
F3 (−3 dB, no cabin gain)28 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 15 1/8″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs35 Hz
Qts1.30
Qes1.729
Qms5.27
Vas1.30 ft³
Re (one coil)2 Ω
Sd76.6 in²
Xmax≈ 0.39″
Mms194 g calc.
BL7 T·m calc.
EBP20 — suits sealed calc.
Sensitivity, 1 W / 1 m81.6 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power700 W

Mounting dimensions

Ø≈ 12 5/16″cutout Ø11 1/8″mounting depth 6 11/16″magnet Ø≈ 7 3/16″
Cutout diameter11 1/8″
Mounting depth6 11/16″

Cone area (Sd) calculated from Fs, Vas and Mms: 76.6 in².

“≈” 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