SoundQubed HDX310 D2

10″ subwoofer · dual 2 Ω · 1,500 W RMS

Fs 30 HzQts 0.27Vas 0.46 ft³Xmax 1.42″
The published specs don’t add up:

Recommended box

For a sedan, one sub, 1,500 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 volume0.58 ft³ (16.5 L)
Qtc0.36
Fc40 Hz
F3 (−3 dB, no cabin gain)99 Hz
Example box (outside)12 5/8″ × 12 5/8″ × 10 3/8″
Open sealed box in designer

Ported

Net volume0.88 ft³ (25 L)
Tuning (Fb)25 Hz
Portslot 1 15/16 × 14 5/16″, 132 1/4″ long
Port velocity at 1,500 W67 ft/s
F3 (−3 dB, no cabin gain)85 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 14 15/16″

The volume and tuning are the recommendation, but the port doesn’t fit this example box. Size the box and port in the designer.

Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs30 Hz
Qts0.27
Qes0.285
Qms4.88
Vas0.46 ft³
Re (one coil)≈ 1.7 Ω
Sd47 in²
Xmax1.42″
Vd66.6 in³ calc.
Mms281 g calc.
BL17.8 T·m calc.
EBP105 — suits ported calc.
Sensitivity, 1 W / 1 m82.9 dB calc.

General

Size10″
Voice coilsdual 2 Ω
RMS power1,500 W

Mounting dimensions

Ø≈ 10 9/16″cutout Ø9 3/8″mounting depth 7 13/16″magnet Ø≈ 6 1/16″
Cutout diameter9 3/8″
Mounting depth7 13/16″

The published Sd of 68.2 in² doesn't match Fs, Vas and Mms — using the calculated 47 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 SoundQubed 10″ models