Kenwood KFC-W112S

12″ subwoofer · 4 Ω · 200 W RMS

Fs 28 HzQts 0.46Vas 3.37 ft³Xmax 0.16″

Recommended box

For a sedan, one sub, 200 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 volume1.62 ft³ (46 L)
Qtc0.80
Fc49 Hz
F3 (−3 dB, no cabin gain)47 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 8 3/8″
Open sealed box in designer

Ported

Net volume2.90 ft³ (82 L)
Tuning (Fb)33 Hz
Portslot 1 9/16 × 14 5/16″, 15 3/16″ long
Port velocity at 200 W53 ft/s
F3 (−3 dB, no cabin gain)31 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 14 1/2″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs28 Hz
Qts0.46
Qes0.48
Qms9.49
Vas3.37 ft³
Re3.7 Ω
Sd74.4 in²
Xmax0.16″
Vd11.7 in³ calc.
Mms111 g calc.
BL12.2 T·m calc.
EBP58 — sealed or ported calc.
Sensitivity, 1 W / 1 m88.4 dB calc.

General

Size12″
Voice coils4 Ω
RMS power200 W

Mounting dimensions

Ø12 15/16″cutout Ø10 7/8″mounting depth 5 1/2″magnet Ø≈ 7 1/16″
Cutout diameter10 7/8″
Mounting depth5 1/2″
Overall diameter12 15/16″

“≈” 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 Kenwood 12″ models