Skar Audio SDR-10 D4

10″ subwoofer · dual 4 Ω · 600 W RMS

Fs 39 HzQts 0.61Vas 0.39 ft³Xmax 0.53″

Recommended box

For a sedan, one sub, 600 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)
Qtc0.81
Fc51 Hz
F3 (−3 dB, no cabin gain)48 Hz
Example box (outside)12 3/16″ × 12 3/16″ × 10 1/4″
Open sealed box in designer

Ported

Net volume1.41 ft³ (40 L)
Tuning (Fb)28 Hz
Port2 round ports Ø2 1/2″, 22 1/4″ long
Port velocity at 600 W158 ft/s
F3 (−3 dB, no cabin gain)24 Hz
Example box (outside)28 13/16″ × 15 3/4″ × 8 11/16″
Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs39 Hz
Qts0.61
Qes0.68
Qms6.08
Vas0.39 ft³
Re (one coil)≈ 3.4 Ω
Sd46.3 in²
Xmax0.53″
Vd24.6 in³ calc.
Mms191 g calc.
BL15.3 T·m calc.
EBP57 — sealed or ported calc.
Sensitivity, 1 W / 1 m81.8 dB calc.

General

Size10″
Voice coilsdual 4 Ω
RMS power600 W

Mounting dimensions

Ø10 1/4″cutout Ø9 1/8″mounting depth 6 1/8″magnet Ø6 1/8″
Cutout diameter9 1/8″
Mounting depth6 1/8″
Overall diameter10 1/4″
Magnet diameter6 1/8″

“≈” 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 Skar Audio 10″ models