Kenwood KFC-XW12

12″ subwoofer · 4 Ω

Fs 25 HzQts 0.91Vas 2.78 ft³Xmax 0.59″

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 volume1.80 ft³ (51 L)
Qtc1.45
Fc40 Hz
F3 (−3 dB, no cabin gain)29 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 9 1/16″
Open sealed box in designer

Ported

Net volume3.07 ft³ (87 L)
Tuning (Fb)33 Hz
Portslot 1 9/16 × 14 5/16″, 14 1/8″ long
Port velocity at 300 W60 ft/s
F3 (−3 dB, no cabin gain)27 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

Fs25 Hz
Qts0.91
Qes1.05
Qms6.8
Vas2.78 ft³
Re3.6 Ω
Sd79.1 in²
Xmax0.59″
Vd47 in³ calc.
Mms190 g calc.
BL10.1 T·m calc.
EBP24 — suits sealed calc.
Sensitivity, 1 W / 1 m82.7 dB calc.

General

Size12″
Voice coils4 Ω
RMS power—

Mounting dimensions

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

“≈” 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