Power Acoustik MOFO-154X

15″ subwoofer · dual 4 Ω · 1,700 W RMS

Fs 24.4 HzQts 0.47Vas 4.08 ft³Xmax 0.59″

Recommended box

For a sedan, one sub, 1,700 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 volume2.15 ft³ (61 L)
Qtc0.80
Fc41 Hz
F3 (−3 dB, no cabin gain)39 Hz
Example box (outside)17 5/16″ × 17 5/16″ × 17 5/16″
Open sealed box in designer

Ported

Net volume4.80 ft³ (136 L)
Tuning (Fb)26 Hz
Portslot 3 3/4 × 16 11/16″, 44 7/8″ long
Port velocity at 1,700 W65 ft/s
F3 (−3 dB, no cabin gain)24 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 25″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs24.4 Hz
Qts0.47
Qes0.51
Qms5.95
Vas4.08 ft³
Re (one coil)3.62 Ω
Sd≈ 124 in²
Xmax0.59″
EBP48 — suits sealed calc.
Sensitivity, 1 W / 1 m87.2 dB calc.

General

Size15″
Voice coilsdual 4 Ω
RMS power1,700 W

Mounting dimensions

Ø15 1/2″cutout Ø14 1/8″mounting depth 8 1/8″magnet Ø≈ 9 3/16″
Cutout diameter14 1/8″
Mounting depth8 1/8″
Overall diameter15 1/2″

“≈” 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 Power Acoustik 15″ models