Sundown Audio SAv2-10 D2

10″ subwoofer · dual 2 Ω · 1,250 W RMS

Fs 37.1 HzQts 0.33Vas 0.37 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)
Qtc0.43
Fc48 Hz
F3 (−3 dB, no cabin gain)95 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)26 Hz
Portround port Ø2 1/2″, 16 3/4″ long
Port velocity at 1,250 W380 ft/s
F3 (−3 dB, no cabin gain)81 Hz
Example box (outside)19 1/2″ × 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

Fs37.1 Hz
Qts0.33
Qes0.36
Qms3.7
Vas0.37 ft³
Re (one coil)1.95 Ω
Sd55.2 in²
Xmax0.75″
Vd41.3 in³ calc.
Mms319 g calc.
BL20.1 T·m calc.
EBP103 — suits ported calc.
Sensitivity, 1 W / 1 m83.7 dB calc.

General

Size10″
Voice coilsdual 2 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