Hifonics BZE-12S4S (Brutus 12" SVC 4ohm)

12″ subwoofer · 4 Ω · 150 W RMS

Fs 26.3 HzQts 0.56Vas 3.62 ft³Xmax 0.26″

Recommended box

For a sedan, one sub, 150 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 volume1.84 ft³ (52 L)
Qtc0.97
Fc45 Hz
F3 (−3 dB, no cabin gain)38 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 9 3/16″
Open sealed box in designer

Ported

Net volume3.11 ft³ (88 L)
Tuning (Fb)33 Hz
Portslot 1 9/16 × 14 5/16″, 13 7/8″ long
Port velocity at 150 W45 ft/s
F3 (−3 dB, no cabin gain)30 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 15 1/4″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs26.3 Hz
Qts0.56
Qes0.604
Qms8.33
Vas3.62 ft³
Re3.6 Ω
Sd80.6 in²
Xmax0.26″
Vd20.6 in³ calc.
Mms137 g calc.
BL11.6 T·m calc.
EBP43 — suits sealed calc.
Sensitivity, 1 W / 1 m86.9 dB calc.

General

Size12″
Voice coils4 Ω
RMS power150 W

Mounting dimensions

Ø≈ 12 5/16″cutout Ø11 1/8″mounting depth 3 5/16″magnet Ø≈ 7 3/16″
Cutout diameter11 1/8″
Mounting depth3 5/16″

“≈” 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 Hifonics 12″ models