SSA ICON 12 D4
12″ subwoofer · dual 4 Ω · 1,250 W RMS
Fs 30.9 HzQts 0.42Vas 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 volume | 0.67 ft³ (19 L) |
|---|---|
| Qtc | 0.72 |
| Fc | 53 Hz |
| F3 (−3 dB, no cabin gain) | 55 Hz |
| Example box (outside) | 14 3/16″ × 14 3/16″ × 9 11/16″ |
Ported
| Net volume | 1.62 ft³ (46 L) |
|---|---|
| Tuning (Fb) | 31 Hz |
| Port | slot 1 15/16 × 14 5/16″, 43 15/16″ long |
| Port velocity at 1,250 W | 81 ft/s |
| F3 (−3 dB, no cabin gain) | 29 Hz |
| Example box (outside) | 31 1/2″ × 15 3/4″ × 12 1/16″ |
Thiele/Small parameters
| Fs | 30.9 Hz |
|---|---|
| Qts | 0.42 |
| Qes | 0.45 |
| Qms | 5.79 |
| Vas | 1.32 ft³ |
| Re (one coil) | 4 Ω |
| Sd | 74.4 in² |
| Xmax | 0.91″ |
| Vd | 67.4 in³ calc. |
| Mms | 231 g calc. |
| BL | 20 T·m calc. |
| EBP | 69 — sealed or ported calc. |
| Sensitivity, 1 W / 1 m | 85.9 dB calc. |
General
| Size | 12″ |
|---|---|
| Voice coils | dual 4 Ω |
| RMS power | 1,250 W |
Mounting dimensions
| Cutout diameter | 11 1/8″ |
|---|---|
| Mounting depth | 6 3/4″ |
| Overall diameter | 12 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
- SSA GCON 12 D2 12″ · dual 2 Ω
- SSA GCON 12 D4 12″ · dual 4 Ω
- SSA ICON 12 D2 12″ · dual 2 Ω