Sundown Audio Ev4-10 D2

10″ subwoofer · dual 2 Ω · 750 W RMS

Fs 32.2 HzQts 0.35Vas 0.69 ft³Xmax 0.55″

Recommended box

For a sedan, one sub, 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 volume0.46 ft³ (13 L)
Qtc0.56
Fc51 Hz
F3 (−3 dB, no cabin gain)71 Hz
Example box (outside)12 3/16″ × 12 3/16″ × 9 3/16″
Open sealed box in designer

Ported

Net volume0.99 ft³ (28 L)
Tuning (Fb)30 Hz
Portround port Ø2 1/2″, 13 1/8″ long
Port velocity at 750 W290 ft/s
F3 (−3 dB, no cabin gain)29 Hz
Example box (outside)21 3/4″ × 15 3/4″ × 8 1/16″
Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs32.2 Hz
Qts0.35
Qes0.38
Qms4.76
Vas0.69 ft³
Re (one coil)2 Ω
Sd50.9 in²
Xmax0.55″
Vd28 in³ calc.
Mms192 g calc.
BL14.3 T·m calc.
EBP85 — sealed or ported calc.
Sensitivity, 1 W / 1 m84.3 dB calc.

General

Size10″
Voice coilsdual 2 Ω
RMS power750 W

Mounting dimensions

Ø10″cutout Ø9 3/16″mounting depth 5 5/8″magnet Ø6 3/8″
Cutout diameter9 3/16″
Mounting depth5 5/8″
Overall diameter10″
Magnet diameter6 3/8″

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: 50.9 in².

“≈” 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