Power Acoustik MOFOS-10D4

10″ subwoofer · dual 4 Ω · 1,100 W RMS

Fs 30.3 HzQts 0.53Vas 0.88 ft³

Recommended box

For a sedan, one sub, 1,100 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 volume0.67 ft³ (19 L)
Qtc0.80
Fc46 Hz
F3 (−3 dB, no cabin gain)44 Hz
Example box (outside)12 5/8″ × 12 5/8″ × 11 9/16″
Open sealed box in designer

Ported

Net volume2.05 ft³ (58 L)
Tuning (Fb)26 Hz
Portslot 1 15/16 × 14 5/16″, 50 1/16″ long
Port velocity at 1,100 W82 ft/s
F3 (−3 dB, no cabin gain)23 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 14 1/8″
Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs30.3 Hz
Qts0.53
Qes0.59
Qms4.78
Vas0.88 ft³
Re (one coil)3.62 Ω
Sd53.3 in²
Xmax≈ 0.39″
Mms185 g calc.
BL14.7 T·m calc.
EBP51 — sealed or ported calc.
Sensitivity, 1 W / 1 m82.7 dB calc.

General

Size10″
Voice coilsdual 4 Ω
RMS power1,100 W

Mounting dimensions

Ø≈ 10 7/16″cutout Ø9 1/4″mounting depth 5 1/2″magnet Ø≈ 6″
Cutout diameter9 1/4″
Mounting depth5 1/2″

Cone area (Sd) calculated from Fs, Vas and Mms: 53.3 in².

Judging by its value, the published Re is for both coils in series — converted to per coil.

“≈” 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 10″ models