Machete M15 D2

15″ subwoofer · dual 2 Ω · 350 W RMS

Fs 34.1 HzQts 0.63Vas 2.66 ft³Xmax 0.55″

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 volume2.83 ft³ (80 L)
Qtc0.88
Fc48 Hz
F3 (−3 dB, no cabin gain)42 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 12″
Open sealed box in designer

Ported

Net volume4.80 ft³ (136 L)
Tuning (Fb)33 Hz
Portslot 2 3/16 × 16 5/16″, 13 1/8″ long
Port velocity at 350 W60 ft/s
F3 (−3 dB, no cabin gain)28 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 20 1/8″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs34.1 Hz
Qts0.63
Qes0.704
Qms6
Vas2.66 ft³
Re (one coil)1.4 Ω
Sd≈ 124 in²
Xmax0.55″
EBP48 — suits sealed calc.
Sensitivity, 1 W / 1 m88.3 dB calc.

General

Size15″
Voice coilsdual 2 Ω
RMS power350 W

Mounting dimensions

Ø≈ 15 1/8″cutout Ø13 15/16″mounting depth 6 7/8″magnet Ø≈ 9 1/16″
Cutout diameter13 15/16″
Mounting depth6 7/8″

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 15″ models