Sundown Audio Xv4-10 D1

10″ subwoofer · dual 1 Ω · 2,750 W RMS

Fs 41.4 HzQts 0.52Vas 0.29 ft³Xmax 1.18″

Recommended box

For a sedan, one sub, 2,750 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 volume0.87 ft³ (24.5 L)
Qtc0.60
Fc48 Hz
F3 (−3 dB, no cabin gain)59 Hz
Example box (outside)13″ × 13″ × 13 3/8″
Open sealed box in designer

Ported

Net volume1.09 ft³ (31 L)
Tuning (Fb)29 Hz
Portslot 1 15/16 × 14 5/16″, 77 1/2″ long
Port velocity at 2,750 W107 ft/s
F3 (−3 dB, no cabin gain)26 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 12 1/16″

The volume and tuning are the recommendation, but the port doesn’t fit this example box. Size the box and port in the designer.

Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs41.4 Hz
Qts0.52
Qes0.58
Qms5.07
Vas0.29 ft³
Re (one coil)0.8 Ω
Sd56.8 in²
Xmax1.18″
Vd67.1 in³ calc.
Mms342 g calc.
BL11.1 T·m calc.
EBP71 — sealed or ported calc.
Sensitivity, 1 W / 1 m82 dB calc.

General

Size10″
Voice coilsdual 1 Ω
RMS power2,750 W

Mounting dimensions

Ø11 13/16″cutout Ø10″mounting depth 11″magnet Ø9 1/4″
Cutout diameter10″
Mounting depth11″
Overall diameter11 13/16″
Magnet diameter9 1/4″

The spec sheet's Sd of 78.5 in² is the area of a 10″ circle, not the cone's radiating area — not used.

Cone area (Sd) calculated from Fs, Vas and Mms: 56.8 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 Sundown Audio 10″ models