Sundown Audio SAv2-10 D4

10″ subwoofer · dual 4 Ω · 1,250 W RMS

Fs 36.1 HzQts 0.34Vas 0.44 ft³Xmax 0.75″

Recommended box

For a sedan, one sub, 1,250 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 volume0.53 ft³ (15 L)
Qtc0.46
Fc49 Hz
F3 (−3 dB, no cabin gain)88 Hz
Example box (outside)12 5/8″ × 12 5/8″ × 9 5/8″
Open sealed box in designer

Ported

Net volume1.06 ft³ (30 L)
Tuning (Fb)28 Hz
Portround port Ø2 1/2″, 14 3/16″ long
Port velocity at 1,250 W396 ft/s
F3 (−3 dB, no cabin gain)67 Hz
Example box (outside)19 3/8″ × 15 3/4″ × 9 7/16″
Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs36.1 Hz
Qts0.34
Qes0.374
Qms3.51
Vas0.44 ft³
Re (one coil)3.41 Ω
Sd55.1 in²
Xmax0.75″
Vd41.3 in³ calc.
Mms282 g calc.
BL24.1 T·m calc.
EBP97 — sealed or ported calc.
Sensitivity, 1 W / 1 m83.9 dB calc.

General

Size10″
Voice coilsdual 4 Ω
RMS power1,250 W

Mounting dimensions

Ø10 15/16″cutout Ø9 1/4″mounting depth 7″magnet Ø≈ 6″
Cutout diameter9 1/4″
Mounting depth7″
Overall diameter10 15/16″

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: 55.2 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