Sundown Audio SA Classic 10 D2

10″ subwoofer · dual 2 Ω · 1,000 W RMS

Fs 35.4 HzQts 0.47Vas 0.36 ft³Xmax 0.75″

Recommended box

For a sedan, one sub, 1,000 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 volume0.44 ft³ (12.5 L)
Qtc0.64
Fc48 Hz
F3 (−3 dB, no cabin gain)55 Hz
Example box (outside)12 5/8″ × 12 5/8″ × 8 3/8″
Open sealed box in designer

Ported

Net volume0.85 ft³ (24 L)
Tuning (Fb)33 Hz
Portround port Ø2 1/2″, 12 5/8″ long
Port velocity at 1,000 W336 ft/s
F3 (−3 dB, no cabin gain)29 Hz
Example box (outside)17 11/16″ × 15 3/4″ × 8 7/16″
Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs35.4 Hz
Qts0.47
Qes0.52
Qms5.41
Vas0.36 ft³
Re (one coil)2.15 Ω
Sd44.2 in²
Xmax0.75″
Vd33.1 in³ calc.
Mms230 g calc.
BL14.5 T·m calc.
EBP68 — sealed or ported calc.
Sensitivity, 1 W / 1 m81.4 dB calc.

General

Size10″
Voice coilsdual 2 Ω
RMS power1,000 W

Mounting dimensions

Ø10 1/2″cutout Ø9 1/4″mounting depth 6″magnet Ø7 3/8″
Cutout diameter9 1/4″
Mounting depth6″
Overall diameter10 1/2″
Magnet diameter7 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: 44.2 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