Machete MFX30 D2

12″ subwoofer · dual 2 Ω · 750 W RMS

Fs 32.4 HzQts 0.48Vas 1.48 ft³Xmax 0.89″

Recommended box

For a sedan, one sub, 750 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 volume0.85 ft³ (24 L)
Qtc0.80
Fc54 Hz
F3 (−3 dB, no cabin gain)51 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 11 9/16″
Open sealed box in designer

Ported

Net volume2.72 ft³ (77 L)
Tuning (Fb)29 Hz
Portslot 2 9/16 × 14 5/16″, 37 7/8″ long
Port velocity at 750 W63 ft/s
F3 (−3 dB, no cabin gain)26 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 16 11/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs32.4 Hz
Qts0.48
Qes0.522
Qms6
Vas1.48 ft³
Re (one coil)1.4 Ω
Sd≈ 76 in²
Xmax0.89″
EBP62 — sealed or ported calc.
Sensitivity, 1 W / 1 m86.4 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power750 W

Mounting dimensions

Ø≈ 12 3/8″cutout Ø11 3/16″mounting depth 6 5/8″magnet Ø≈ 7 1/4″
Cutout diameter11 3/16″
Mounting depth6 5/8″

Only Qts is published — Qms assumed to be 6 and Qes calculated (barely affects box design).

“≈” 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 Machete 12″ models