Hertz Cento CS 300 S2 (SVC 2 ohm)

12″ subwoofer · 2 Ω · 350 W RMS

Fs 25 HzQts 0.46Vas 3.08 ft³Xmax 0.49″

Recommended box

For a sedan, one sub, 350 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 volume1.52 ft³ (43 L)
Qtc0.80
Fc44 Hz
F3 (−3 dB, no cabin gain)41 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 7 15/16″
Open sealed box in designer

Ported

Net volume3.35 ft³ (95 L)
Tuning (Fb)28 Hz
Portslot 1 3/4 × 14 5/16″, 21 5/8″ long
Port velocity at 350 W64 ft/s
F3 (−3 dB, no cabin gain)26 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 16 15/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs25 Hz
Qts0.46
Qes0.49
Qms7.2
Vas3.08 ft³
Re2.2 Ω
Sd86.8 in²
Xmax0.49″
Vd42.7 in³ calc.
Mms206 g calc.
BL12.1 T·m calc.
EBP51 — sealed or ported calc.
Sensitivity, 1 W / 1 m86.4 dB calc.

General

Size12″
Voice coils2 Ω
RMS power350 W

Mounting dimensions

Ø12 1/2″cutout Ø11 1/16″mounting depth 5 1/8″magnet Ø5 1/4″
Cutout diameter11 1/16″
Mounting depth5 1/8″
Overall diameter12 1/2″
Magnet diameter5 1/4″

“≈” 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 Hertz 12″ models