Machete MF-12R D2

12″ subwoofer · dual 2 Ω · 1,200 W RMS

Fs 37.6 HzQts 0.47Vas 0.88 ft³Xmax 0.59″

Recommended box

For a sedan, one sub, 1,200 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 volume0.71 ft³ (20 L)
Qtc0.70
Fc56 Hz
F3 (−3 dB, no cabin gain)59 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 10 1/16″
Open sealed box in designer

Ported

Net volume1.52 ft³ (43 L)
Tuning (Fb)34 Hz
Portslot 2 3/16 × 14 5/16″, 42 5/8″ long
Port velocity at 1,200 W76 ft/s
F3 (−3 dB, no cabin gain)31 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 11 13/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs37.6 Hz
Qts0.47
Qes0.51
Qms6
Vas0.88 ft³
Re (one coil)≈ 1.7 Ω
Sd≈ 76 in²
Xmax0.59″
EBP74 — sealed or ported calc.
Sensitivity, 1 W / 1 m86.1 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power1,200 W

Mounting dimensions

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

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