SSA ICON 12 D2

12″ subwoofer · dual 2 Ω · 1,250 W RMS

Fs 29.7 HzQts 0.39Vas 1.32 ft³Xmax 0.91″

Recommended box

For a sedan, one sub, 1,250 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 volume0.67 ft³ (19 L)
Qtc0.67
Fc51 Hz
F3 (−3 dB, no cabin gain)57 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 9 11/16″
Open sealed box in designer

Ported

Net volume1.41 ft³ (40 L)
Tuning (Fb)31 Hz
Portslot 1 9/16 × 14 5/16″, 40 1/2″ long
Port velocity at 1,250 W94 ft/s
F3 (−3 dB, no cabin gain)30 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 10 7/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs29.7 Hz
Qts0.39
Qes0.42
Qms5.79
Vas1.32 ft³
Re (one coil)2 Ω
Sd74.4 in²
Xmax0.91″
Vd67.4 in³ calc.
Mms251 g calc.
BL14.9 T·m calc.
EBP71 — sealed or ported calc.
Sensitivity, 1 W / 1 m85.7 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power1,250 W

Mounting dimensions

Ø12 1/2″cutout Ø11 1/8″mounting depth 6 3/4″magnet Ø≈ 7 1/4″
Cutout diameter11 1/8″
Mounting depth6 3/4″
Overall diameter12 1/2″

Judging by its value, the published Re is for both coils in series — converted to per coil.

“≈” 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 SSA 12″ models