Fi Audio Xv4 10 D2

10″ subwoofer · dual 2 Ω · 1,500 W RMS

Fs 41 HzQts 0.31Vas 0.25 ft³Xmax 1.06″

Recommended box

For a sedan, one sub, 1,500 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 volume0.42 ft³ (12 L)
Qtc0.39
Fc52 Hz
F3 (−3 dB, no cabin gain)114 Hz
Example box (outside)12 3/16″ × 12 3/16″ × 8 5/8″
Open sealed box in designer

Ported

Net volume0.92 ft³ (26 L)
Tuning (Fb)26 Hz
Portround port Ø2 1/2″, 19 5/8″ long
Port velocity at 1,500 W396 ft/s
F3 (−3 dB, no cabin gain)104 Hz
Example box (outside)22 1/16″ × 15 3/4″ × 7 11/16″
Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs41 Hz
Qts0.31
Qes0.33
Qms5.1
Vas0.25 ft³
Re (one coil)1.6 Ω
Sd48.1 in²
Xmax1.06″
Vd51.1 in³ calc.
Mms290 g calc.
BL19 T·m calc.
EBP124 — suits ported calc.
Sensitivity, 1 W / 1 m83.7 dB calc.

General

Size10″
Voice coilsdual 2 Ω
RMS power1,500 W

Mounting dimensions

Ø≈ 10 5/16″cutout ≈ Ø9 1/8″mounting depth ≈ 5 1/8″magnet Ø≈ 5 15/16″
Cutout diameter≈ 9 1/8″
Mounting depth≈ 5 1/8″

“≈” 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 Fi Audio 10″ models