Kicker Comp 12" 8-Ohm SVC (C128)

12″ subwoofer · 8 Ω

Fs 27.3 HzQts 0.57Vas 4.50 ft³Xmax 0.30″

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 volume1.87 ft³ (53 L)
Qtc1.04
Fc50 Hz
F3 (−3 dB, no cabin gain)41 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 9 3/8″
Open sealed box in designer

Ported

Net volume3.18 ft³ (90 L)
Tuning (Fb)36 Hz
Portslot 1 9/16 × 14 5/16″, 10 3/4″ long
Port velocity at 300 W64 ft/s
F3 (−3 dB, no cabin gain)33 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 15 5/16″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs27.3 Hz
Qts0.57
Qes0.593
Qms12.17
Vas4.50 ft³
Re7.41 Ω
Sd82.5 in²
Xmax0.30″
Vd24.3 in³ calc.
Mms107 g calc.
BL15.1 T·m calc.
EBP46 — suits sealed calc.
Sensitivity, 1 W / 1 m88.4 dB calc.

General

Size12″
Voice coils8 Ω
RMS power—

Mounting dimensions

Ø≈ 12 1/16″cutout Ø10 7/8″mounting depth 5 1/2″magnet Ø≈ 7 1/16″
Cutout diameter10 7/8″
Mounting depth5 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 Kicker 12″ models