SoundQubed HDS2.212 D4

12″ subwoofer · dual 4 Ω · 600 W RMS

Fs 31 HzQts 0.39Vas 1.61 ft³Xmax 0.55″

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 volume0.71 ft³ (20 L)
Qtc0.71
Fc56 Hz
F3 (−3 dB, no cabin gain)59 Hz
Example box (outside)14 9/16″ × 14 9/16″ × 9 9/16″
Open sealed box in designer

Ported

Net volume1.62 ft³ (46 L)
Tuning (Fb)33 Hz
Portslot 1 3/4 × 14 5/16″, 34 3/16″ long
Port velocity at 600 W64 ft/s
F3 (−3 dB, no cabin gain)32 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 11 1/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs31 Hz
Qts0.39
Qes0.423
Qms5.08
Vas1.61 ft³
Re (one coil)≈ 3.4 Ω
Sd78.5 in²
Xmax0.55″
Vd43.3 in³ calc.
Mms211 g calc.
BL18.2 T·m calc.
EBP73 — sealed or ported calc.
Sensitivity, 1 W / 1 m87 dB calc.

General

Size12″
Voice coilsdual 4 Ω
RMS power600 W

Mounting dimensions

Ø≈ 12 7/16″cutout Ø11 1/4″mounting depth 6 3/4″magnet Ø≈ 7 5/16″
Cutout diameter11 1/4″
Mounting depth6 3/4″

“≈” 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 12″ models