Machete ML-12S D2

12″ subwoofer · dual 2 Ω · 300 W RMS

Fs 35.7 HzQts 0.46Vas 1.47 ft³Xmax 0.39″

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 volume0.74 ft³ (21 L)
Qtc0.79
Fc62 Hz
F3 (−3 dB, no cabin gain)59 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 10 7/16″
Open sealed box in designer

Ported

Net volume2.37 ft³ (67 L)
Tuning (Fb)33 Hz
Portslot 1 9/16 × 14 5/16″, 19 1/2″ long
Port velocity at 300 W64 ft/s
F3 (−3 dB, no cabin gain)30 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 12 11/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs35.7 Hz
Qts0.46
Qes0.498
Qms6
Vas1.47 ft³
Re (one coil)≈ 1.7 Ω
Sd≈ 76 in²
Xmax0.39″
EBP72 — sealed or ported calc.
Sensitivity, 1 W / 1 m87.8 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power300 W

Mounting dimensions

Ø≈ 12 1/8″cutout Ø10 15/16″mounting depth 5 1/16″magnet Ø≈ 7 1/8″
Cutout diameter10 15/16″
Mounting depth5 1/16″

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