Machete M15 D1 Sport

15″ subwoofer · dual 1 Ω · 750 W RMS

Fs 34 HzQts 0.63Vas 1.94 ft³Xmax 0.63″

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 volume2.83 ft³ (80 L)
Qtc0.82
Fc44 Hz
F3 (−3 dB, no cabin gain)40 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 11 3/4″
Open sealed box in designer

Ported

Net volume4.80 ft³ (136 L)
Tuning (Fb)29 Hz
Portslot 2 15/16 × 16 11/16″, 26 13/16″ long
Port velocity at 750 W62 ft/s
F3 (−3 dB, no cabin gain)25 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 21 5/8″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs34 Hz
Qts0.63
Qes0.704
Qms6
Vas1.94 ft³
Re (one coil)0.7 Ω
Sd≈ 124 in²
Xmax0.63″
EBP48 — suits sealed calc.
Sensitivity, 1 W / 1 m86.9 dB calc.

General

Size15″
Voice coilsdual 1 Ω
RMS power750 W

Mounting dimensions

Ø≈ 15 3/16″cutout Ø14″mounting depth 7 3/8″magnet Ø≈ 9 1/16″
Cutout diameter14″
Mounting depth7 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 15″ models