Kenwood KFC-W3013PS

12″ subwoofer · 4 Ω · 400 W RMS

Fs 25 HzQts 0.82Vas 2.96 ft³Xmax 0.59″

Recommended box

For a sedan, one sub, 400 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)
Qtc1.33
Fc41 Hz
F3 (−3 dB, no cabin gain)30 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)32 Hz
Portslot 1 3/4 × 14 5/16″, 17 7/16″ long
Port velocity at 400 W60 ft/s
F3 (−3 dB, no cabin gain)27 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 15 1/2″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs25 Hz
Qts0.82
Qes0.91
Qms8.25
Vas2.96 ft³
Re3.4 Ω
Sd79.1 in²
Xmax0.59″
Vd47 in³ calc.
Mms178 g calc.
BL10.2 T·m calc.
EBP27 — suits sealed calc.
Sensitivity, 1 W / 1 m83.6 dB calc.

General

Size12″
Voice coils4 Ω
RMS power400 W

Mounting dimensions

Ø12 13/16″cutout Ø11″mounting depth 6″magnet Ø≈ 7 1/8″
Cutout diameter11″
Mounting depth6″
Overall diameter12 13/16″

“≈” 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