Machete M15 v2 D2

15″ subwoofer · dual 2 Ω · 500 W RMS

Fs 29.5 HzQts 0.54Vas 2.84 ft³Xmax 0.55″

Recommended box

For a sedan, one sub, 500 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 volume2.37 ft³ (67 L)
Qtc0.80
Fc44 Hz
F3 (−3 dB, no cabin gain)41 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 10 3/8″
Open sealed box in designer

Ported

Net volume4.80 ft³ (136 L)
Tuning (Fb)28 Hz
Portslot 2 3/8 × 16 5/16″, 22 3/16″ long
Port velocity at 500 W62 ft/s
F3 (−3 dB, no cabin gain)25 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 21 1/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs29.5 Hz
Qts0.54
Qes0.593
Qms6
Vas2.84 ft³
Re (one coil)1.8 Ω
Sd≈ 124 in²
Xmax0.55″
EBP50 — suits sealed calc.
Sensitivity, 1 W / 1 m87.4 dB calc.

General

Size15″
Voice coilsdual 2 Ω
RMS power500 W

Mounting dimensions

Ø≈ 14 13/16″cutout Ø13 5/8″mounting depth 6 15/16″magnet Ø≈ 8 7/8″
Cutout diameter13 5/8″
Mounting depth6 15/16″

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 15″ models