Kicx Sound Civilization Q250WF

10″ subwoofer · 2 Ω · 300 W RMS

Fs 32 HzQts 0.58Vas 1.13 ft³Xmax 0.17″

Recommended box

For a sedan, one sub, 300 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 volume1.24 ft³ (35 L)
Qtc0.80
Fc44 Hz
F3 (−3 dB, no cabin gain)41 Hz
Example box (outside)12 3/16″ × 12 3/16″ × 20 11/16″
Open sealed box in designer

Ported

Net volume2.15 ft³ (61 L)
Tuning (Fb)30 Hz
Portslot 1 9/16 × 14 5/16″, 27 3/16″ long
Port velocity at 300 W56 ft/s
F3 (−3 dB, no cabin gain)26 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 12 1/4″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs32 Hz
Qts0.58
Qes0.65
Qms5.37
Vas1.13 ft³
Re1.8 Ω
Sd55.2 in²
Xmax0.17″
Vd9.6 in³ calc.
Mms139 g calc.
BL8.8 T·m calc.
EBP49 — suits sealed calc.
Sensitivity, 1 W / 1 m84.1 dB calc.

General

Size10″
Voice coils2 Ω
RMS power300 W

Mounting dimensions

Ø10 11/16″cutout Ø9 3/16″mounting depth 4 3/4″magnet Ø5 1/2″
Cutout diameter9 3/16″
Mounting depth4 3/4″
Overall diameter10 11/16″
Magnet diameter5 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 10″ models