DC Audio Shortie 10 D2

10″ subwoofer · dual 2 Ω · 500 W RMS

Fs 45.5 HzQts 0.69Vas 0.25 ft³Xmax 0.55″
The published specs don’t add up:

Recommended box

For a sedan, one sub, 500 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 volume0.49 ft³ (14 L)
Qtc0.85
Fc56 Hz
F3 (−3 dB, no cabin gain)50 Hz
Example box (outside)12 5/8″ × 12 5/8″ × 9 1/8″
Open sealed box in designer

Ported

Net volume1.31 ft³ (37 L)
Tuning (Fb)30 Hz
Portround port Ø3″, 13 13/16″ long
Port velocity at 500 W199 ft/s
F3 (−3 dB, no cabin gain)26 Hz
Example box (outside)30 7/16″ × 15 3/4″ × 7 1/2″
Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs45.5 Hz
Qts0.69
Qes0.819
Qms4.38
Vas0.25 ft³
Re (one coil)≈ 1.7 Ω
Sd53.6 in²
Xmax0.55″
Vd29.6 in³ calc.
Mms289 g calc.
BL13.1 T·m calc.
EBP56 — sealed or ported calc.
Sensitivity, 1 W / 1 m81.2 dB calc.

General

Size10″
Voice coilsdual 2 Ω
RMS power500 W

Mounting dimensions

Ø11″cutout Ø9 5/16″mounting depth 5″magnet Ø≈ 6 1/16″
Cutout diameter9 5/16″
Mounting depth5″
Overall diameter11″

“≈” 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 DC Audio 10″ models